Replace script_plugins with a clippy like rustc driver (named crown) (#30508)

* Remove script_plugins

* Use crown instead of script_plugins

* crown_is_not_used

* Use crown in command base

* bootstrap crown

* tidy happy

* disable sccache

* Bring crown in tree

* Install crown from tree

* fix windows ci

* fix warning

* fix mac

libscript_plugins.dylib is not available anymore

* Update components/script/lib.rs

Co-authored-by: Martin Robinson <mrobinson@igalia.com>

* Update for nightly-2023-03-18

Mostly just based off https://github.com/servo/servo/pull/30630

* Always install crown

it's slow only when there is new version

* Run crown test with `mach test-unit`

* Small fixups; better trace_in_no_trace tests

* Better doc

* crown in config.toml

* Fix tidy for real

* no sccache on rustc_wrapper

* document rustc overrides

* fixup of compiletest

* Make a few minor comment adjustments

* Fix a typo in python/servo/platform/base.py

Co-authored-by: Samson <16504129+sagudev@users.noreply.github.com>

* Proper test types

* Ignore tidy on crown/tests

---------

Co-authored-by: Martin Robinson <mrobinson@igalia.com>

203 files changed, 357 insertions, 1313 deletions

diff --git a/components/dom_struct/lib.rs b/components/dom_struct/lib.rs
index d501a1a63a5..3cafbb48731 100644
--- a/components/dom_struct/lib.rs
+++ b/components/dom_struct/lib.rs
@@ -13,7 +13,7 @@ pub fn dom_struct(args: TokenStream, input: TokenStream) -> TokenStream {
     }
     let attributes = quote! {
         #[derive(deny_public_fields::DenyPublicFields, domobject_derive::DomObject, JSTraceable, MallocSizeOf)]
-        #[unrooted_must_root_lint::must_root]
+        #[crown::unrooted_must_root_lint::must_root]
         #[repr(C)]
     };
 
diff --git a/components/script/Cargo.toml b/components/script/Cargo.toml
index 41527bf18c6..a92489538ae 100644
--- a/components/script/Cargo.toml
+++ b/components/script/Cargo.toml
@@ -16,9 +16,6 @@ path = "lib.rs"
 debugmozjs = ['js/debugmozjs']
 jitspew = ['js/jitspew']
 profilemozjs = ['js/profilemozjs']
-unrooted_must_root_lint = ["script_plugins/unrooted_must_root_lint"]
-trace_in_no_trace_lint = ["script_plugins/trace_in_no_trace_lint"]
-default = ["unrooted_must_root_lint", "trace_in_no_trace_lint"]
 webgl_backtrace = ["canvas_traits/webgl_backtrace"]
 js_backtrace = []
 refcell_backtrace = ["accountable-refcell"]
@@ -88,7 +85,6 @@ range = { path = "../range" }
 ref_filter_map = "1.0.1"
 regex = { workspace = true }
 script_layout_interface = { workspace = true }
-script_plugins = { path = "../script_plugins" }
 script_traits = { workspace = true }
 selectors = { path = "../selectors", features = ["shmem"] }
 serde = { workspace = true, features = ["derive"] }
diff --git a/components/script/animations.rs b/components/script/animations.rs
index 674ec7afcaa..128df043cf3 100644
--- a/components/script/animations.rs
+++ b/components/script/animations.rs
@@ -36,7 +36,7 @@ use crate::dom::window::Window;
 
 /// The set of animations for a document.
 #[derive(Default, JSTraceable, MallocSizeOf)]
-#[unrooted_must_root_lint::must_root]
+#[crown::unrooted_must_root_lint::must_root]
 pub(crate) struct Animations {
     /// The map of nodes to their animation states.
     #[no_trace]
diff --git a/components/script/body.rs b/components/script/body.rs
index 1e7475109bb..5dbfb706f7d 100644
--- a/components/script/body.rs
+++ b/components/script/body.rs
@@ -715,7 +715,7 @@ impl Callback for ConsumeBodyPromiseHandler {
 }
 
 // https://fetch.spec.whatwg.org/#concept-body-consume-body
-#[allow(unrooted_must_root)]
+#[allow(crown::unrooted_must_root)]
 pub fn consume_body<T: BodyMixin + DomObject>(object: &T, body_type: BodyType) -> Rc<Promise> {
     let in_realm_proof = AlreadyInRealm::assert();
     let promise = Promise::new_in_current_realm(InRealm::Already(&in_realm_proof));
@@ -739,7 +739,7 @@ pub fn consume_body<T: BodyMixin + DomObject>(object: &T, body_type: BodyType) -
 }
 
 // https://fetch.spec.whatwg.org/#concept-body-consume-body
-#[allow(unrooted_must_root)]
+#[allow(crown::unrooted_must_root)]
 fn consume_body_with_promise<T: BodyMixin + DomObject>(
     object: &T,
     body_type: BodyType,
diff --git a/components/script/canvas_state.rs b/components/script/canvas_state.rs
index be8a25f4383..d08f142ca10 100644
--- a/components/script/canvas_state.rs
+++ b/components/script/canvas_state.rs
@@ -57,7 +57,7 @@ use crate::dom::paintworkletglobalscope::PaintWorkletGlobalScope;
 use crate::dom::textmetrics::TextMetrics;
 use crate::unpremultiplytable::UNPREMULTIPLY_TABLE;
 
-#[unrooted_must_root_lint::must_root]
+#[crown::unrooted_must_root_lint::must_root]
 #[derive(Clone, JSTraceable, MallocSizeOf)]
 #[allow(dead_code)]
 pub(crate) enum CanvasFillOrStrokeStyle {
@@ -76,7 +76,7 @@ impl CanvasFillOrStrokeStyle {
     }
 }
 
-#[unrooted_must_root_lint::must_root]
+#[crown::unrooted_must_root_lint::must_root]
 #[derive(Clone, JSTraceable, MallocSizeOf)]
 pub(crate) struct CanvasContextState {
     global_alpha: f64,
@@ -136,7 +136,7 @@ impl CanvasContextState {
     }
 }
 
-#[unrooted_must_root_lint::must_root]
+#[crown::unrooted_must_root_lint::must_root]
 #[derive(JSTraceable, MallocSizeOf)]
 pub(crate) struct CanvasState {
     #[ignore_malloc_size_of = "Defined in ipc-channel"]
@@ -927,7 +927,7 @@ impl CanvasState {
         self.send_canvas_2d_msg(Canvas2dMsg::SaveContext);
     }
 
-    #[allow(unrooted_must_root)]
+    #[allow(crown::unrooted_must_root)]
     // https://html.spec.whatwg.org/multipage/#dom-context-2d-restore
     pub fn restore(&self) {
         let mut saved_states = self.saved_states.borrow_mut();
diff --git a/components/script/docs/JS-Servos-only-GC.md b/components/script/docs/JS-Servos-only-GC.md
index d7611fc7336..95eb694bce6 100644
--- a/components/script/docs/JS-Servos-only-GC.md
+++ b/components/script/docs/JS-Servos-only-GC.md
@@ -172,7 +172,7 @@ is where we actually call the SpiderMonkey trace hooks:
 
 ```rust
 /// Trace the `JSObject` held by `reflector`.
-#[allow(unrooted_must_root)]
+#[allow(crown::unrooted_must_root)]
 pub fn trace_reflector(tracer: *mut JSTracer, description: &str, reflector: &Reflector) {
     trace!("tracing reflector {}", description);
     trace_object(tracer, description, reflector.rootable())
diff --git a/components/script/document_loader.rs b/components/script/document_loader.rs
index 02a33a0ce74..3be77d7e31b 100644
--- a/components/script/document_loader.rs
+++ b/components/script/document_loader.rs
@@ -29,7 +29,7 @@ pub enum LoadType {
 /// created via DocumentLoader::fetch_async) are always removed by the time
 /// that the owner is destroyed.
 #[derive(JSTraceable, MallocSizeOf)]
-#[unrooted_must_root_lint::must_root]
+#[crown::unrooted_must_root_lint::must_root]
 pub struct LoadBlocker {
     /// The document whose load event is blocked by this object existing.
     doc: Dom<Document>,
diff --git a/components/script/dom/analysernode.rs b/components/script/dom/analysernode.rs
index 237a0e79fb6..71bf078202c 100644
--- a/components/script/dom/analysernode.rs
+++ b/components/script/dom/analysernode.rs
@@ -37,7 +37,7 @@ pub struct AnalyserNode {
 }
 
 impl AnalyserNode {
-    #[allow(unrooted_must_root)]
+    #[allow(crown::unrooted_must_root)]
     pub fn new_inherited(
         _: &Window,
         context: &BaseAudioContext,
@@ -99,7 +99,7 @@ impl AnalyserNode {
         Self::new_with_proto(window, None, context, options)
     }
 
-    #[allow(unrooted_must_root)]
+    #[allow(crown::unrooted_must_root)]
     pub fn new_with_proto(
         window: &Window,
         proto: Option<HandleObject>,
diff --git a/components/script/dom/audiobuffer.rs b/components/script/dom/audiobuffer.rs
index 81943ca25f5..5645d418ee5 100644
--- a/components/script/dom/audiobuffer.rs
+++ b/components/script/dom/audiobuffer.rs
@@ -63,7 +63,7 @@ pub struct AudioBuffer {
 }
 
 impl AudioBuffer {
-    #[allow(unrooted_must_root)]
+    #[allow(crown::unrooted_must_root)]
     #[allow(unsafe_code)]
     pub fn new_inherited(number_of_channels: u32, length: u32, sample_rate: f32) -> AudioBuffer {
         let vec = (0..number_of_channels).map(|_| Heap::default()).collect();
@@ -95,7 +95,7 @@ impl AudioBuffer {
         )
     }
 
-    #[allow(unrooted_must_root)]
+    #[allow(crown::unrooted_must_root)]
     fn new_with_proto(
         global: &Window,
         proto: Option<HandleObject>,
diff --git a/components/script/dom/audiobuffersourcenode.rs b/components/script/dom/audiobuffersourcenode.rs
index efa0008491f..c7df916db5a 100644
--- a/components/script/dom/audiobuffersourcenode.rs
+++ b/components/script/dom/audiobuffersourcenode.rs
@@ -42,7 +42,7 @@ pub struct AudioBufferSourceNode {
 }
 
 impl AudioBufferSourceNode {
-    #[allow(unrooted_must_root)]
+    #[allow(crown::unrooted_must_root)]
     fn new_inherited(
         window: &Window,
         context: &BaseAudioContext,
@@ -105,7 +105,7 @@ impl AudioBufferSourceNode {
         Self::new_with_proto(window, None, context, options)
     }
 
-    #[allow(unrooted_must_root)]
+    #[allow(crown::unrooted_must_root)]
     fn new_with_proto(
         window: &Window,
         proto: Option<HandleObject>,
diff --git a/components/script/dom/audiocontext.rs b/components/script/dom/audiocontext.rs
index b18f5f62dab..524aae9d647 100644
--- a/components/script/dom/audiocontext.rs
+++ b/components/script/dom/audiocontext.rs
@@ -46,7 +46,7 @@ pub struct AudioContext {
 }
 
 impl AudioContext {
-    #[allow(unrooted_must_root)]
+    #[allow(crown::unrooted_must_root)]
     // https://webaudio.github.io/web-audio-api/#AudioContext-constructors
     fn new_inherited(options: &AudioContextOptions, pipeline_id: PipelineId) -> AudioContext {
         // Steps 1-3.
@@ -78,7 +78,7 @@ impl AudioContext {
         }
     }
 
-    #[allow(unrooted_must_root)]
+    #[allow(crown::unrooted_must_root)]
     fn new(
         window: &Window,
         proto: Option<HandleObject>,
diff --git a/components/script/dom/audiodestinationnode.rs b/components/script/dom/audiodestinationnode.rs
index ec1beb116bb..a63daaf4587 100644
--- a/components/script/dom/audiodestinationnode.rs
+++ b/components/script/dom/audiodestinationnode.rs
@@ -37,7 +37,7 @@ impl AudioDestinationNode {
         }
     }
 
-    #[allow(unrooted_must_root)]
+    #[allow(crown::unrooted_must_root)]
     pub fn new(
         global: &GlobalScope,
         context: &BaseAudioContext,
diff --git a/components/script/dom/audiolistener.rs b/components/script/dom/audiolistener.rs
index d6c7b8151c3..e26389b0c8c 100644
--- a/components/script/dom/audiolistener.rs
+++ b/components/script/dom/audiolistener.rs
@@ -142,7 +142,7 @@ impl AudioListener {
         }
     }
 
-    #[allow(unrooted_must_root)]
+    #[allow(crown::unrooted_must_root)]
     pub fn new(window: &Window, context: &BaseAudioContext) -> DomRoot<AudioListener> {
         let node = AudioListener::new_inherited(window, context);
         reflect_dom_object(Box::new(node), window)
diff --git a/components/script/dom/audioparam.rs b/components/script/dom/audioparam.rs
index 3d1ca25c77f..509252c1485 100644
--- a/components/script/dom/audioparam.rs
+++ b/components/script/dom/audioparam.rs
@@ -58,7 +58,7 @@ impl AudioParam {
         }
     }
 
-    #[allow(unrooted_must_root)]
+    #[allow(crown::unrooted_must_root)]
     pub fn new(
         window: &Window,
         context: &BaseAudioContext,
diff --git a/components/script/dom/audioscheduledsourcenode.rs b/components/script/dom/audioscheduledsourcenode.rs
index 3337bb4c5cb..8c3229616ed 100644
--- a/components/script/dom/audioscheduledsourcenode.rs
+++ b/components/script/dom/audioscheduledsourcenode.rs
@@ -27,7 +27,7 @@ pub struct AudioScheduledSourceNode {
 }
 
 impl AudioScheduledSourceNode {
-    #[allow(unrooted_must_root)]
+    #[allow(crown::unrooted_must_root)]
     pub fn new_inherited(
         node_type: AudioNodeInit,
         context: &BaseAudioContext,
diff --git a/components/script/dom/baseaudiocontext.rs b/components/script/dom/baseaudiocontext.rs
index 9e0581c48e3..9673e964352 100644
--- a/components/script/dom/baseaudiocontext.rs
+++ b/components/script/dom/baseaudiocontext.rs
@@ -109,7 +109,7 @@ pub struct BaseAudioContext {
 }
 
 impl BaseAudioContext {
-    #[allow(unrooted_must_root)]
+    #[allow(crown::unrooted_must_root)]
     pub fn new_inherited(
         options: BaseAudioContextOptions,
         pipeline_id: PipelineId,
@@ -193,9 +193,9 @@ impl BaseAudioContext {
     /// does not take a list of promises to fulfill. Callers cannot just pop
     /// the front list off of `in_flight_resume_promises_queue` and later fulfill
     /// the promises because that would mean putting
-    /// `#[allow(unrooted_must_root)]` on even more functions, potentially
+    /// `#[allow(crown::unrooted_must_root)]` on even more functions, potentially
     /// hiding actual safety bugs.
-    #[allow(unrooted_must_root)]
+    #[allow(crown::unrooted_must_root)]
     fn fulfill_in_flight_resume_promises<F>(&self, f: F)
     where
         F: FnOnce(),
diff --git a/components/script/dom/bindings/callback.rs b/components/script/dom/bindings/callback.rs
index 4554c34683c..0cad20d3255 100644
--- a/components/script/dom/bindings/callback.rs
+++ b/components/script/dom/bindings/callback.rs
@@ -42,7 +42,7 @@ pub enum ExceptionHandling {
 /// A common base class for representing IDL callback function and
 /// callback interface types.
 #[derive(JSTraceable)]
-#[unrooted_must_root_lint::must_root]
+#[crown::unrooted_must_root_lint::must_root]
 pub struct CallbackObject {
     /// The underlying `JSObject`.
     callback: Heap<*mut JSObject>,
@@ -63,14 +63,14 @@ pub struct CallbackObject {
 }
 
 impl Default for CallbackObject {
-    #[allow(unrooted_must_root)]
+    #[allow(crown::unrooted_must_root)]
     fn default() -> CallbackObject {
         CallbackObject::new()
     }
 }
 
 impl CallbackObject {
-    #[allow(unrooted_must_root)]
+    #[allow(crown::unrooted_must_root)]
     fn new() -> CallbackObject {
         CallbackObject {
             callback: Heap::default(),
@@ -133,14 +133,14 @@ pub trait CallbackContainer {
 
 /// A common base class for representing IDL callback function types.
 #[derive(JSTraceable, PartialEq)]
-#[unrooted_must_root_lint::must_root]
+#[crown::unrooted_must_root_lint::must_root]
 pub struct CallbackFunction {
     object: CallbackObject,
 }
 
 impl CallbackFunction {
     /// Create a new `CallbackFunction` for this object.
-    #[allow(unrooted_must_root)]
+    #[allow(crown::unrooted_must_root)]
     pub fn new() -> CallbackFunction {
         CallbackFunction {
             object: CallbackObject::new(),
@@ -161,7 +161,7 @@ impl CallbackFunction {
 
 /// A common base class for representing IDL callback interface types.
 #[derive(JSTraceable, PartialEq)]
-#[unrooted_must_root_lint::must_root]
+#[crown::unrooted_must_root_lint::must_root]
 pub struct CallbackInterface {
     object: CallbackObject,
 }
@@ -241,7 +241,7 @@ pub struct CallSetup {
 
 impl CallSetup {
     /// Performs the setup needed to make a call.
-    #[allow(unrooted_must_root)]
+    #[allow(crown::unrooted_must_root)]
     pub fn new<T: CallbackContainer>(callback: &T, handling: ExceptionHandling) -> CallSetup {
         let global = unsafe { GlobalScope::from_object(callback.callback()) };
         if let Some(window) = global.downcast::<Window>() {
diff --git a/components/script/dom/bindings/codegen/CodegenRust.py b/components/script/dom/bindings/codegen/CodegenRust.py
index 471c152040b..361d6d60edb 100644
--- a/components/script/dom/bindings/codegen/CodegenRust.py
+++ b/components/script/dom/bindings/codegen/CodegenRust.py
@@ -6906,7 +6906,7 @@ class CGDictionary(CGThing):
         derive = ["JSTraceable"]
         mustRoot = ""
         if self.membersNeedTracing():
-            mustRoot = "#[unrooted_must_root_lint::must_root]\n"
+            mustRoot = "#[crown::unrooted_must_root_lint::must_root]\n"
             if not self.hasRequiredFields(self.dictionary):
                 derive += ["Default"]
 
@@ -7450,7 +7450,7 @@ class CGCallback(CGClass):
                          constructors=self.getConstructors(),
                          methods=realMethods,
                          decorators="#[derive(JSTraceable, PartialEq)]\n"
-                                    "#[unrooted_must_root_lint::allow_unrooted_interior]")
+                                    "#[crown::unrooted_must_root_lint::allow_unrooted_interior]")
 
     def getConstructors(self):
         return [ClassConstructor(
diff --git a/components/script/dom/bindings/mod.rs b/components/script/dom/bindings/mod.rs
index 9263fca2ba6..85bfad112c1 100644
--- a/components/script/dom/bindings/mod.rs
+++ b/components/script/dom/bindings/mod.rs
@@ -165,7 +165,7 @@ pub mod xmlname;
 /// Generated JS-Rust bindings.
 #[allow(missing_docs, non_snake_case)]
 pub mod codegen {
-    #[allow(dead_code, unrooted_must_root)]
+    #[allow(dead_code, crown::unrooted_must_root)]
     pub mod Bindings {
         include!(concat!(env!("OUT_DIR"), "/Bindings/mod.rs"));
     }
diff --git a/components/script/dom/bindings/refcounted.rs b/components/script/dom/bindings/refcounted.rs
index 0279e98b6ba..3bf2dcef22e 100644
--- a/components/script/dom/bindings/refcounted.rs
+++ b/components/script/dom/bindings/refcounted.rs
@@ -80,7 +80,7 @@ impl TrustedPromise {
     /// Create a new `TrustedPromise` instance from an existing DOM object. The object will
     /// be prevented from being GCed for the duration of the resulting `TrustedPromise` object's
     /// lifetime.
-    #[allow(unrooted_must_root)]
+    #[allow(crown::unrooted_must_root)]
     pub fn new(promise: Rc<Promise>) -> TrustedPromise {
         LIVE_REFERENCES.with(|ref r| {
             let r = r.borrow();
@@ -130,7 +130,7 @@ impl TrustedPromise {
     }
 
     /// A task which will reject the promise.
-    #[allow(unrooted_must_root)]
+    #[allow(crown::unrooted_must_root)]
     pub fn reject_task(self, error: Error) -> impl TaskOnce {
         let this = self;
         task!(reject_promise: move || {
@@ -140,7 +140,7 @@ impl TrustedPromise {
     }
 
     /// A task which will resolve the promise.
-    #[allow(unrooted_must_root)]
+    #[allow(crown::unrooted_must_root)]
     pub fn resolve_task<T>(self, value: T) -> impl TaskOnce
     where
         T: ToJSValConvertible + Send,
@@ -157,7 +157,7 @@ impl TrustedPromise {
 /// shared among threads for use in asynchronous operations. The underlying
 /// DOM object is guaranteed to live at least as long as the last outstanding
 /// `Trusted<T>` instance.
-#[unrooted_must_root_lint::allow_unrooted_interior]
+#[crown::unrooted_must_root_lint::allow_unrooted_interior]
 pub struct Trusted<T: DomObject> {
     /// A pointer to the Rust DOM object of type T, but void to allow
     /// sending `Trusted<T>` between threads, regardless of T's sendability.
@@ -220,7 +220,7 @@ impl<T: DomObject> Clone for Trusted<T> {
 
 /// The set of live, pinned DOM objects that are currently prevented
 /// from being garbage collected due to outstanding references.
-#[allow(unrooted_must_root)]
+#[allow(crown::unrooted_must_root)]
 pub struct LiveDOMReferences {
     // keyed on pointer to Rust DOM object
     reflectable_table: RefCell<HashMap<*const libc::c_void, Weak<TrustedReference>>>,
@@ -244,7 +244,7 @@ impl LiveDOMReferences {
         });
     }
 
-    #[allow(unrooted_must_root)]
+    #[allow(crown::unrooted_must_root)]
     fn addref_promise(&self, promise: Rc<Promise>) {
         let mut table = self.promise_table.borrow_mut();
         table.entry(&*promise).or_insert(vec![]).push(promise)
@@ -294,7 +294,7 @@ fn remove_nulls<K: Eq + Hash + Clone, V>(table: &mut HashMap<K, Weak<V>>) {
 }
 
 /// A JSTraceDataOp for tracing reflectors held in LIVE_REFERENCES
-#[allow(unrooted_must_root)]
+#[allow(crown::unrooted_must_root)]
 pub unsafe fn trace_refcounted_objects(tracer: *mut JSTracer) {
     info!("tracing live refcounted references");
     LIVE_REFERENCES.with(|ref r| {
diff --git a/components/script/dom/bindings/reflector.rs b/components/script/dom/bindings/reflector.rs
index 4b1ba97c525..081fe38312b 100644
--- a/components/script/dom/bindings/reflector.rs
+++ b/components/script/dom/bindings/reflector.rs
@@ -42,16 +42,16 @@ where
 }
 
 /// A struct to store a reference to the reflector of a DOM object.
-#[allow(unrooted_must_root)]
+#[allow(crown::unrooted_must_root)]
 #[derive(MallocSizeOf)]
-#[unrooted_must_root_lint::must_root]
+#[crown::unrooted_must_root_lint::must_root]
 // If you're renaming or moving this field, update the path in plugins::reflector as well
 pub struct Reflector {
     #[ignore_malloc_size_of = "defined and measured in rust-mozjs"]
     object: Heap<*mut JSObject>,
 }
 
-#[allow(unrooted_must_root)]
+#[allow(crown::unrooted_must_root)]
 impl PartialEq for Reflector {
     fn eq(&self, other: &Reflector) -> bool {
         self.object.get() == other.object.get()
diff --git a/components/script/dom/bindings/root.rs b/components/script/dom/bindings/root.rs
index 1e67474ea99..68f754628bc 100644
--- a/components/script/dom/bindings/root.rs
+++ b/components/script/dom/bindings/root.rs
@@ -44,8 +44,8 @@ use crate::dom::bindings::trace::{trace_reflector, JSTraceable};
 use crate::dom::node::Node;
 
 /// A rooted value.
-#[allow(unrooted_must_root)]
-#[unrooted_must_root_lint::allow_unrooted_interior]
+#[allow(crown::unrooted_must_root)]
+#[crown::unrooted_must_root_lint::allow_unrooted_interior]
 pub struct Root<T: StableTraceObject> {
     /// The value to root.
     value: T,
@@ -60,7 +60,7 @@ where
     /// Create a new stack-bounded root for the provided value.
     /// It cannot outlive its associated `RootCollection`, and it gives
     /// out references which cannot outlive this new `Root`.
-    #[allow(unrooted_must_root)]
+    #[allow(crown::unrooted_must_root)]
     pub unsafe fn new(value: T) -> Self {
         unsafe fn add_to_root_list(object: *const dyn JSTraceable) -> *const RootCollection {
             assert_in_script();
@@ -92,7 +92,7 @@ where
         // The JSTraceable impl for Reflector doesn't actually do anything,
         // so we need this shenanigan to actually trace the reflector of the
         // T pointer in Dom<T>.
-        #[allow(unrooted_must_root)]
+        #[allow(crown::unrooted_must_root)]
         struct ReflectorStackRoot(Reflector);
         unsafe impl JSTraceable for ReflectorStackRoot {
             unsafe fn trace(&self, tracer: *mut JSTracer) {
@@ -111,7 +111,7 @@ where
         // The JSTraceable impl for Reflector doesn't actually do anything,
         // so we need this shenanigan to actually trace the reflector of the
         // T pointer in Dom<T>.
-        #[allow(unrooted_must_root)]
+        #[allow(crown::unrooted_must_root)]
         struct MaybeUnreflectedStackRoot<T>(T);
         unsafe impl<T> JSTraceable for MaybeUnreflectedStackRoot<T>
         where
@@ -316,7 +316,7 @@ where
 /// on the stack, the `Dom<T>` can point to freed memory.
 ///
 /// This should only be used as a field in other DOM objects.
-#[unrooted_must_root_lint::must_root]
+#[crown::unrooted_must_root_lint::must_root]
 pub struct Dom<T> {
     ptr: ptr::NonNull<T>,
 }
@@ -341,7 +341,7 @@ impl<T> Dom<T> {
 
 impl<T: DomObject> Dom<T> {
     /// Create a Dom<T> from a &T
-    #[allow(unrooted_must_root)]
+    #[allow(crown::unrooted_must_root)]
     pub fn from_ref(obj: &T) -> Dom<T> {
         assert_in_script();
         Dom {
@@ -375,7 +375,7 @@ unsafe impl<T: DomObject> JSTraceable for Dom<T> {
 }
 
 /// A traced reference to a DOM object that may not be reflected yet.
-#[unrooted_must_root_lint::must_root]
+#[crown::unrooted_must_root_lint::must_root]
 pub struct MaybeUnreflectedDom<T> {
     ptr: ptr::NonNull<T>,
 }
@@ -384,7 +384,7 @@ impl<T> MaybeUnreflectedDom<T>
 where
     T: DomObject,
 {
-    #[allow(unrooted_must_root)]
+    #[allow(crown::unrooted_must_root)]
     pub unsafe fn from_box(value: Box<T>) -> Self {
         Self {
             ptr: Box::leak(value).into(),
@@ -416,7 +416,7 @@ where
 
 /// An unrooted reference to a DOM object for use in layout. `Layout*Helpers`
 /// traits must be implemented on this.
-#[unrooted_must_root_lint::allow_unrooted_interior]
+#[crown::unrooted_must_root_lint::allow_unrooted_interior]
 pub struct LayoutDom<'dom, T> {
     value: &'dom T,
 }
@@ -505,7 +505,7 @@ impl<T> Hash for LayoutDom<'_, T> {
 
 impl<T> Clone for Dom<T> {
     #[inline]
-    #[allow(unrooted_must_root)]
+    #[allow(crown::unrooted_must_root)]
     fn clone(&self) -> Self {
         assert_in_script();
         Dom {
@@ -539,7 +539,7 @@ impl LayoutDom<'_, Node> {
 ///
 /// This should only be used as a field in other DOM objects; see warning
 /// on `Dom<T>`.
-#[unrooted_must_root_lint::must_root]
+#[crown::unrooted_must_root_lint::must_root]
 #[derive(JSTraceable)]
 pub struct MutDom<T: DomObject> {
     val: UnsafeCell<Dom<T>>,
@@ -602,7 +602,7 @@ pub(crate) fn assert_in_layout() {
 ///
 /// This should only be used as a field in other DOM objects; see warning
 /// on `Dom<T>`.
-#[unrooted_must_root_lint::must_root]
+#[crown::unrooted_must_root_lint::must_root]
 #[derive(JSTraceable)]
 pub struct MutNullableDom<T: DomObject> {
     ptr: UnsafeCell<Option<Dom<T>>>,
@@ -636,14 +636,14 @@ impl<T: DomObject> MutNullableDom<T> {
 
     /// Retrieve a copy of the inner optional `Dom<T>` as `LayoutDom<T>`.
     /// For use by layout, which can't use safe types like Temporary.
-    #[allow(unrooted_must_root)]
+    #[allow(crown::unrooted_must_root)]
     pub unsafe fn get_inner_as_layout(&self) -> Option<LayoutDom<T>> {
         assert_in_layout();
         (*self.ptr.get()).as_ref().map(|js| js.to_layout())
     }
 
     /// Get a rooted value out of this object
-    #[allow(unrooted_must_root)]
+    #[allow(crown::unrooted_must_root)]
     pub fn get(&self) -> Option<DomRoot<T>> {
         assert_in_script();
         unsafe { ptr::read(self.ptr.get()).map(|o| DomRoot::from_ref(&*o)) }
@@ -678,7 +678,7 @@ impl<'a, T: DomObject> PartialEq<Option<&'a T>> for MutNullableDom<T> {
 }
 
 impl<T: DomObject> Default for MutNullableDom<T> {
-    #[allow(unrooted_must_root)]
+    #[allow(crown::unrooted_must_root)]
     fn default() -> MutNullableDom<T> {
         assert_in_script();
         MutNullableDom {
@@ -700,7 +700,7 @@ impl<T: DomObject> MallocSizeOf for MutNullableDom<T> {
 ///
 /// This should only be used as a field in other DOM objects; see warning
 /// on `Dom<T>`.
-#[unrooted_must_root_lint::must_root]
+#[crown::unrooted_must_root_lint::must_root]
 pub struct DomOnceCell<T: DomObject> {
     ptr: OnceCell<Dom<T>>,
 }
@@ -711,7 +711,7 @@ where
 {
     /// Retrieve a copy of the current inner value. If it is `None`, it is
     /// initialized with the result of `cb` first.
-    #[allow(unrooted_must_root)]
+    #[allow(crown::unrooted_must_root)]
     pub fn init_once<F>(&self, cb: F) -> &T
     where
         F: FnOnce() -> DomRoot<T>,
@@ -722,7 +722,7 @@ where
 }
 
 impl<T: DomObject> Default for DomOnceCell<T> {
-    #[allow(unrooted_must_root)]
+    #[allow(crown::unrooted_must_root)]
     fn default() -> DomOnceCell<T> {
         assert_in_script();
         DomOnceCell {
@@ -738,7 +738,7 @@ impl<T: DomObject> MallocSizeOf for DomOnceCell<T> {
     }
 }
 
-#[allow(unrooted_must_root)]
+#[allow(crown::unrooted_must_root)]
 unsafe impl<T: DomObject> JSTraceable for DomOnceCell<T> {
     unsafe fn trace(&self, trc: *mut JSTracer) {
         if let Some(ptr) = self.ptr.get() {
diff --git a/components/script/dom/bindings/settings_stack.rs b/components/script/dom/bindings/settings_stack.rs
index 6461a790025..f25de95ee7c 100644
--- a/components/script/dom/bindings/settings_stack.rs
+++ b/components/script/dom/bindings/settings_stack.rs
@@ -20,7 +20,7 @@ enum StackEntryKind {
     Entry,
 }
 
-#[allow(unrooted_must_root)]
+#[allow(crown::unrooted_must_root)]
 #[derive(JSTraceable)]
 struct StackEntry {
     global: Dom<GlobalScope>,
diff --git a/components/script/dom/bindings/trace.rs b/components/script/dom/bindings/trace.rs
index 99abcf07e3d..3d730dff605 100644
--- a/components/script/dom/bindings/trace.rs
+++ b/components/script/dom/bindings/trace.rs
@@ -100,7 +100,7 @@ unsafe impl<T: JSTraceable> CustomTraceable for OnceCell<T> {
 ///
 /// SAFETY: Inner type must not impl JSTraceable
 #[derive(Clone, Copy, Debug, Default, Eq, Hash, Ord, PartialEq, PartialOrd)]
-#[trace_in_no_trace_lint::must_not_have_traceable]
+#[crown::trace_in_no_trace_lint::must_not_have_traceable]
 pub struct NoTrace<T>(pub T);
 
 impl<T: Display> Display for NoTrace<T> {
@@ -130,7 +130,7 @@ impl<T: MallocSizeOf> MallocSizeOf for NoTrace<T> {
 /// HashMap wrapper, that has non-jsmanaged keys
 ///
 /// Not all methods are reexposed, but you can access inner type via .0
-#[trace_in_no_trace_lint::must_not_have_traceable(0)]
+#[crown::trace_in_no_trace_lint::must_not_have_traceable(0)]
 #[derive(Clone, Debug)]
 pub struct HashMapTracedValues<K, V, S = RandomState>(pub HashMap<K, V, S>);
 
@@ -276,7 +276,7 @@ pub fn trace_jsval(tracer: *mut JSTracer, description: &str, val: &Heap<JSVal>)
 }
 
 /// Trace the `JSObject` held by `reflector`.
-#[allow(unrooted_must_root)]
+#[allow(crown::unrooted_must_root)]
 pub fn trace_reflector(tracer: *mut JSTracer, description: &str, reflector: &Reflector) {
     trace!("tracing reflector {}", description);
     trace_object(tracer, description, reflector.rootable())
@@ -482,7 +482,7 @@ pub use js::gc::RootedTraceableSet;
 /// If you have GC things like *mut JSObject or JSVal, use rooted!.
 /// If you have an arbitrary number of DomObjects to root, use rooted_vec!.
 /// If you know what you're doing, use this.
-#[unrooted_must_root_lint::allow_unrooted_interior]
+#[crown::unrooted_must_root_lint::allow_unrooted_interior]
 pub struct RootedTraceableBox<T: JSTraceable + 'static>(js::gc::RootedTraceableBox<T>);
 
 unsafe impl<T: JSTraceable + 'static> JSTraceable for RootedTraceableBox<T> {
@@ -547,9 +547,9 @@ impl<T: JSTraceable> DerefMut for RootedTraceableBox<T> {
 /// Guaranteed to be empty when not rooted.
 /// Usage: `rooted_vec!(let mut v);` or if you have an
 /// iterator of `DomRoot`s, `rooted_vec!(let v <- iterator);`.
-#[allow(unrooted_must_root)]
+#[allow(crown::unrooted_must_root)]
 #[derive(JSTraceable)]
-#[unrooted_must_root_lint::allow_unrooted_interior]
+#[crown::unrooted_must_root_lint::allow_unrooted_interior]
 pub struct RootableVec<T: JSTraceable> {
     v: Vec<T>,
 }
@@ -562,7 +562,7 @@ impl<T: JSTraceable> RootableVec<T> {
 }
 
 /// A vector of items that are rooted for the lifetime 'a.
-#[unrooted_must_root_lint::allow_unrooted_interior]
+#[crown::unrooted_must_root_lint::allow_unrooted_interior]
 pub struct RootedVec<'a, T: 'static + JSTraceable> {
     root: &'a mut RootableVec<T>,
 }
diff --git a/components/script/dom/bindings/weakref.rs b/components/script/dom/bindings/weakref.rs
index a0bd0ea362d..57bf219de4f 100644
--- a/components/script/dom/bindings/weakref.rs
+++ b/components/script/dom/bindings/weakref.rs
@@ -33,14 +33,14 @@ use crate::dom::bindings::trace::JSTraceable;
 pub const DOM_WEAK_SLOT: u32 = 1;
 
 /// A weak reference to a JS-managed DOM object.
-#[allow(unrooted_must_root)]
-#[unrooted_must_root_lint::allow_unrooted_interior]
+#[allow(crown::unrooted_must_root)]
+#[crown::unrooted_must_root_lint::allow_unrooted_interior]
 pub struct WeakRef<T: WeakReferenceable> {
     ptr: ptr::NonNull<WeakBox<T>>,
 }
 
 /// The inner box of weak references, public for the finalization in codegen.
-#[unrooted_must_root_lint::must_root]
+#[crown::unrooted_must_root_lint::must_root]
 pub struct WeakBox<T: WeakReferenceable> {
     /// The reference count. When it reaches zero, the `value` field should
     /// have already been set to `None`. The pointee contributes one to the count.
@@ -218,7 +218,7 @@ unsafe impl<T: WeakReferenceable> JSTraceable for MutableWeakRef<T> {
 
 /// A vector of weak references. On tracing, the vector retains
 /// only references which still point to live objects.
-#[unrooted_must_root_lint::allow_unrooted_interior]
+#[crown::unrooted_must_root_lint::allow_unrooted_interior]
 #[derive(MallocSizeOf)]
 pub struct WeakRefVec<T: WeakReferenceable> {
     vec: Vec<WeakRef<T>>,
@@ -268,7 +268,7 @@ impl<T: WeakReferenceable> DerefMut for WeakRefVec<T> {
 
 /// An entry of a vector of weak references. Passed to the closure
 /// given to `WeakRefVec::update`.
-#[unrooted_must_root_lint::allow_unrooted_interior]
+#[crown::unrooted_must_root_lint::allow_unrooted_interior]
 pub struct WeakRefEntry<'a, T: WeakReferenceable> {
     vec: &'a mut WeakRefVec<T>,
     index: &'a mut usize,
diff --git a/components/script/dom/biquadfilternode.rs b/components/script/dom/biquadfilternode.rs
index f730da15651..53daa65c2df 100644
--- a/components/script/dom/biquadfilternode.rs
+++ b/components/script/dom/biquadfilternode.rs
@@ -39,7 +39,7 @@ pub struct BiquadFilterNode {
 }
 
 impl BiquadFilterNode {
-    #[allow(unrooted_must_root)]
+    #[allow(crown::unrooted_must_root)]
     pub fn new_inherited(
         window: &Window,
         context: &BaseAudioContext,
@@ -116,7 +116,7 @@ impl BiquadFilterNode {
         Self::new_with_proto(window, None, context, options)
     }
 
-    #[allow(unrooted_must_root)]
+    #[allow(crown::unrooted_must_root)]
     fn new_with_proto(
         window: &Window,
         proto: Option<HandleObject>,
diff --git a/components/script/dom/blob.rs b/components/script/dom/blob.rs
index 1b710124368..f2ae708d91d 100644
--- a/components/script/dom/blob.rs
+++ b/components/script/dom/blob.rs
@@ -56,7 +56,7 @@ impl Blob {
         dom_blob
     }
 
-    #[allow(unrooted_must_root)]
+    #[allow(crown::unrooted_must_root)]
     pub fn new_inherited(blob_impl: &BlobImpl) -> Blob {
         Blob {
             reflector_: Reflector::new(),
diff --git a/components/script/dom/bluetooth.rs b/components/script/dom/bluetooth.rs
index 9e25fa478d9..7b7aa791b0a 100644
--- a/components/script/dom/bluetooth.rs
+++ b/components/script/dom/bluetooth.rs
@@ -113,7 +113,7 @@ impl<T> BluetoothContext<T>
 where
     T: AsyncBluetoothListener + DomObject,
 {
-    #[allow(unrooted_must_root)]
+    #[allow(crown::unrooted_must_root)]
     fn response(&mut self, response: BluetoothResponseResult) {
         let promise = self.promise.take().expect("bt promise is missing").root();
 
@@ -737,7 +737,7 @@ impl PermissionAlgorithm for Bluetooth {
         // NOTE: Step 3. is in BluetoothPermissionResult's `handle_response` function.
     }
 
-    #[allow(unrooted_must_root)]
+    #[allow(crown::unrooted_must_root)]
     // https://webbluetoothcg.github.io/web-bluetooth/#revoke-bluetooth-access
     fn permission_revoke(
         _descriptor: &BluetoothPermissionDescriptor,
diff --git a/components/script/dom/bluetoothdevice.rs b/components/script/dom/bluetoothdevice.rs
index a2b9ecc330e..0d58c4f2f9d 100644
--- a/components/script/dom/bluetoothdevice.rs
+++ b/components/script/dom/bluetoothdevice.rs
@@ -187,7 +187,7 @@ impl BluetoothDevice {
     }
 
     // https://webbluetoothcg.github.io/web-bluetooth/#clean-up-the-disconnected-device
-    #[allow(unrooted_must_root)]
+    #[allow(crown::unrooted_must_root)]
     pub fn clean_up_disconnected_device(&self) {
         // Step 1.
         self.get_gatt().set_connected(false);
@@ -223,7 +223,7 @@ impl BluetoothDevice {
     }
 
     // https://webbluetoothcg.github.io/web-bluetooth/#garbage-collect-the-connection
-    #[allow(unrooted_must_root)]
+    #[allow(crown::unrooted_must_root)]
     pub fn garbage_collect_the_connection(&self) -> ErrorResult {
         // Step 1: TODO: Check if other systems using this device.
 
diff --git a/components/script/dom/bluetoothpermissionresult.rs b/components/script/dom/bluetoothpermissionresult.rs
index 5b557555f18..76f22864c30 100644
--- a/components/script/dom/bluetoothpermissionresult.rs
+++ b/components/script/dom/bluetoothpermissionresult.rs
@@ -34,7 +34,7 @@ pub struct BluetoothPermissionResult {
 }
 
 impl BluetoothPermissionResult {
-    #[allow(unrooted_must_root)]
+    #[allow(crown::unrooted_must_root)]
     fn new_inherited(status: &PermissionStatus) -> BluetoothPermissionResult {
         let result = BluetoothPermissionResult {
             status: PermissionStatus::new_inherited(status.get_query()),
@@ -74,7 +74,7 @@ impl BluetoothPermissionResult {
         self.status.State()
     }
 
-    #[allow(unrooted_must_root)]
+    #[allow(crown::unrooted_must_root)]
     pub fn set_devices(&self, devices: Vec<Dom<BluetoothDevice>>) {
         *self.devices.borrow_mut() = devices;
     }
diff --git a/components/script/dom/canvasrenderingcontext2d.rs b/components/script/dom/canvasrenderingcontext2d.rs
index d10c577f56a..ef2394eadf7 100644
--- a/components/script/dom/canvasrenderingcontext2d.rs
+++ b/components/script/dom/canvasrenderingcontext2d.rs
@@ -175,7 +175,7 @@ impl CanvasRenderingContext2DMethods for CanvasRenderingContext2D {
         self.canvas_state.save()
     }
 
-    #[allow(unrooted_must_root)]
+    #[allow(crown::unrooted_must_root)]
     // https://html.spec.whatwg.org/multipage/#dom-context-2d-restore
     fn Restore(&self) {
         self.canvas_state.restore()
diff --git a/components/script/dom/channelmergernode.rs b/components/script/dom/channelmergernode.rs
index 241e711c290..14acb96e1c3 100644
--- a/components/script/dom/channelmergernode.rs
+++ b/components/script/dom/channelmergernode.rs
@@ -24,7 +24,7 @@ pub struct ChannelMergerNode {
 }
 
 impl ChannelMergerNode {
-    #[allow(unrooted_must_root)]
+    #[allow(crown::unrooted_must_root)]
     pub fn new_inherited(
         _: &Window,
         context: &BaseAudioContext,
@@ -62,7 +62,7 @@ impl ChannelMergerNode {
         Self::new_with_proto(window, None, context, options)
     }
 
-    #[allow(unrooted_must_root)]
+    #[allow(crown::unrooted_must_root)]
     fn new_with_proto(
         window: &Window,
         proto: Option<HandleObject>,
diff --git a/components/script/dom/channelsplitternode.rs b/components/script/dom/channelsplitternode.rs
index f6412242215..78982887d73 100644
--- a/components/script/dom/channelsplitternode.rs
+++ b/components/script/dom/channelsplitternode.rs
@@ -23,7 +23,7 @@ pub struct ChannelSplitterNode {
 }
 
 impl ChannelSplitterNode {
-    #[allow(unrooted_must_root)]
+    #[allow(crown::unrooted_must_root)]
     pub fn new_inherited(
         _: &Window,
         context: &BaseAudioContext,
@@ -64,7 +64,7 @@ impl ChannelSplitterNode {
         Self::new_with_proto(window, None, context, options)
     }
 
-    #[allow(unrooted_must_root)]
+    #[allow(crown::unrooted_must_root)]
     fn new_with_proto(
         window: &Window,
         proto: Option<HandleObject>,
diff --git a/components/script/dom/constantsourcenode.rs b/components/script/dom/constantsourcenode.rs
index 4b9b8668706..88a4d5eaabc 100644
--- a/components/script/dom/constantsourcenode.rs
+++ b/components/script/dom/constantsourcenode.rs
@@ -29,7 +29,7 @@ pub struct ConstantSourceNode {
 }
 
 impl ConstantSourceNode {
-    #[allow(unrooted_must_root)]
+    #[allow(crown::unrooted_must_root)]
     fn new_inherited(
         window: &Window,
         context: &BaseAudioContext,
@@ -69,7 +69,7 @@ impl ConstantSourceNode {
         Self::new_with_proto(window, None, context, options)
     }
 
-    #[allow(unrooted_must_root)]
+    #[allow(crown::unrooted_must_root)]
     fn new_with_proto(
         window: &Window,
         proto: Option<HandleObject>,
diff --git a/components/script/dom/cssfontfacerule.rs b/components/script/dom/cssfontfacerule.rs
index edd175753c0..2e082260909 100644
--- a/components/script/dom/cssfontfacerule.rs
+++ b/components/script/dom/cssfontfacerule.rs
@@ -33,7 +33,7 @@ impl CSSFontFaceRule {
         }
     }
 
-    #[allow(unrooted_must_root)]
+    #[allow(crown::unrooted_must_root)]
     pub fn new(
         window: &Window,
         parent_stylesheet: &CSSStyleSheet,
diff --git a/components/script/dom/cssimportrule.rs b/components/script/dom/cssimportrule.rs
index 857c5cd2909..3b4c3afcd41 100644
--- a/components/script/dom/cssimportrule.rs
+++ b/components/script/dom/cssimportrule.rs
@@ -33,7 +33,7 @@ impl CSSImportRule {
         }
     }
 
-    #[allow(unrooted_must_root)]
+    #[allow(crown::unrooted_must_root)]
     pub fn new(
         window: &Window,
         parent_stylesheet: &CSSStyleSheet,
diff --git a/components/script/dom/csskeyframerule.rs b/components/script/dom/csskeyframerule.rs
index 743df167b68..a9d4b1fb9c7 100644
--- a/components/script/dom/csskeyframerule.rs
+++ b/components/script/dom/csskeyframerule.rs
@@ -38,7 +38,7 @@ impl CSSKeyframeRule {
         }
     }
 
-    #[allow(unrooted_must_root)]
+    #[allow(crown::unrooted_must_root)]
     pub fn new(
         window: &Window,
         parent_stylesheet: &CSSStyleSheet,
diff --git a/components/script/dom/csskeyframesrule.rs b/components/script/dom/csskeyframesrule.rs
index 51a63c557e8..edd49fe62dc 100644
--- a/components/script/dom/csskeyframesrule.rs
+++ b/components/script/dom/csskeyframesrule.rs
@@ -42,7 +42,7 @@ impl CSSKeyframesRule {
         }
     }
 
-    #[allow(unrooted_must_root)]
+    #[allow(crown::unrooted_must_root)]
     pub fn new(
         window: &Window,
         parent_stylesheet: &CSSStyleSheet,
diff --git a/components/script/dom/cssmediarule.rs b/components/script/dom/cssmediarule.rs
index 808c988add8..871a214f107 100644
--- a/components/script/dom/cssmediarule.rs
+++ b/components/script/dom/cssmediarule.rs
@@ -37,7 +37,7 @@ impl CSSMediaRule {
         }
     }
 
-    #[allow(unrooted_must_root)]
+    #[allow(crown::unrooted_must_root)]
     pub fn new(
         window: &Window,
         parent_stylesheet: &CSSStyleSheet,
diff --git a/components/script/dom/cssnamespacerule.rs b/components/script/dom/cssnamespacerule.rs
index cd648e1338c..106dac18406 100644
--- a/components/script/dom/cssnamespacerule.rs
+++ b/components/script/dom/cssnamespacerule.rs
@@ -34,7 +34,7 @@ impl CSSNamespaceRule {
         }
     }
 
-    #[allow(unrooted_must_root)]
+    #[allow(crown::unrooted_must_root)]
     pub fn new(
         window: &Window,
         parent_stylesheet: &CSSStyleSheet,
diff --git a/components/script/dom/cssrule.rs b/components/script/dom/cssrule.rs
index cd4da2b2b24..d3fd12f9948 100644
--- a/components/script/dom/cssrule.rs
+++ b/components/script/dom/cssrule.rs
@@ -36,7 +36,7 @@ pub struct CSSRule {
 }
 
 impl CSSRule {
-    #[allow(unrooted_must_root)]
+    #[allow(crown::unrooted_must_root)]
     pub fn new_inherited(parent_stylesheet: &CSSStyleSheet) -> CSSRule {
         CSSRule {
             reflector_: Reflector::new(),
diff --git a/components/script/dom/cssrulelist.rs b/components/script/dom/cssrulelist.rs
index e279ffc51b9..ac345f4f22a 100644
--- a/components/script/dom/cssrulelist.rs
+++ b/components/script/dom/cssrulelist.rs
@@ -52,7 +52,7 @@ pub enum RulesSource {
 }
 
 impl CSSRuleList {
-    #[allow(unrooted_must_root)]
+    #[allow(crown::unrooted_must_root)]
     pub fn new_inherited(parent_stylesheet: &CSSStyleSheet, rules: RulesSource) -> CSSRuleList {
         let guard = parent_stylesheet.shared_lock().read();
         let dom_rules = match rules {
@@ -78,7 +78,7 @@ impl CSSRuleList {
         }
     }
 
-    #[allow(unrooted_must_root)]
+    #[allow(crown::unrooted_must_root)]
     pub fn new(
         window: &Window,
         parent_stylesheet: &CSSStyleSheet,
diff --git a/components/script/dom/cssstyledeclaration.rs b/components/script/dom/cssstyledeclaration.rs
index 0f4f5b880f0..1cfa678cb3f 100644
--- a/components/script/dom/cssstyledeclaration.rs
+++ b/components/script/dom/cssstyledeclaration.rs
@@ -39,7 +39,7 @@ pub struct CSSStyleDeclaration {
 }
 
 #[derive(JSTraceable, MallocSizeOf)]
-#[unrooted_must_root_lint::must_root]
+#[crown::unrooted_must_root_lint::must_root]
 pub enum CSSStyleOwner {
     Element(Dom<Element>),
     CSSRule(
@@ -209,7 +209,7 @@ fn remove_property(decls: &mut PropertyDeclarationBlock, id: &PropertyId) -> boo
 }
 
 impl CSSStyleDeclaration {
-    #[allow(unrooted_must_root)]
+    #[allow(crown::unrooted_must_root)]
     pub fn new_inherited(
         owner: CSSStyleOwner,
         pseudo: Option<PseudoElement>,
@@ -223,7 +223,7 @@ impl CSSStyleDeclaration {
         }
     }
 
-    #[allow(unrooted_must_root)]
+    #[allow(crown::unrooted_must_root)]
     pub fn new(
         global: &Window,
         owner: CSSStyleOwner,
diff --git a/components/script/dom/cssstylerule.rs b/components/script/dom/cssstylerule.rs
index e7cad8be137..a5d41d5d0d6 100644
--- a/components/script/dom/cssstylerule.rs
+++ b/components/script/dom/cssstylerule.rs
@@ -44,7 +44,7 @@ impl CSSStyleRule {
         }
     }
 
-    #[allow(unrooted_must_root)]
+    #[allow(crown::unrooted_must_root)]
     pub fn new(
         window: &Window,
         parent_stylesheet: &CSSStyleSheet,
diff --git a/components/script/dom/cssstylesheet.rs b/components/script/dom/cssstylesheet.rs
index b7bf410ed36..64c57461871 100644
--- a/components/script/dom/cssstylesheet.rs
+++ b/components/script/dom/cssstylesheet.rs
@@ -50,7 +50,7 @@ impl CSSStyleSheet {
         }
     }
 
-    #[allow(unrooted_must_root)]
+    #[allow(crown::unrooted_must_root)]
     pub fn new(
         window: &Window,
         owner: &Element,
diff --git a/components/script/dom/csssupportsrule.rs b/components/script/dom/csssupportsrule.rs
index 53714358b39..9d29ddfb6df 100644
--- a/components/script/dom/csssupportsrule.rs
+++ b/components/script/dom/csssupportsrule.rs
@@ -36,7 +36,7 @@ impl CSSSupportsRule {
         }
     }
 
-    #[allow(unrooted_must_root)]
+    #[allow(crown::unrooted_must_root)]
     pub fn new(
         window: &Window,
         parent_stylesheet: &CSSStyleSheet,
diff --git a/components/script/dom/customelementregistry.rs b/components/script/dom/customelementregistry.rs
index eb0f49981e3..2f8e90e6808 100644
--- a/components/script/dom/customelementregistry.rs
+++ b/components/script/dom/customelementregistry.rs
@@ -248,7 +248,7 @@ fn get_callback(
 }
 
 impl CustomElementRegistryMethods for CustomElementRegistry {
-    #[allow(unsafe_code, unrooted_must_root)]
+    #[allow(unsafe_code, crown::unrooted_must_root)]
     /// <https://html.spec.whatwg.org/multipage/#dom-customelementregistry-define>
     fn Define(
         &self,
@@ -762,7 +762,7 @@ pub fn try_upgrade_element(element: &Element) {
 }
 
 #[derive(JSTraceable, MallocSizeOf)]
-#[unrooted_must_root_lint::must_root]
+#[crown::unrooted_must_root_lint::must_root]
 pub enum CustomElementReaction {
     Upgrade(#[ignore_malloc_size_of = "Rc"] Rc<CustomElementDefinition>),
     Callback(
@@ -808,7 +808,7 @@ enum BackupElementQueueFlag {
 
 /// <https://html.spec.whatwg.org/multipage/#custom-element-reactions-stack>
 #[derive(JSTraceable, MallocSizeOf)]
-#[unrooted_must_root_lint::must_root]
+#[crown::unrooted_must_root_lint::must_root]
 pub struct CustomElementReactionStack {
     stack: DomRefCell<Vec<ElementQueue>>,
     backup_queue: ElementQueue,
@@ -994,7 +994,7 @@ impl CustomElementReactionStack {
 
 /// <https://html.spec.whatwg.org/multipage/#element-queue>
 #[derive(JSTraceable, MallocSizeOf)]
-#[unrooted_must_root_lint::must_root]
+#[crown::unrooted_must_root_lint::must_root]
 struct ElementQueue {
     queue: DomRefCell<VecDeque<Dom<Element>>>,
 }
diff --git a/components/script/dom/dissimilaroriginlocation.rs b/components/script/dom/dissimilaroriginlocation.rs
index cae89941ce6..da2221bf9f6 100644
--- a/components/script/dom/dissimilaroriginlocation.rs
+++ b/components/script/dom/dissimilaroriginlocation.rs
@@ -28,7 +28,7 @@ pub struct DissimilarOriginLocation {
 }
 
 impl DissimilarOriginLocation {
-    #[allow(unrooted_must_root)]
+    #[allow(crown::unrooted_must_root)]
     fn new_inherited(window: &DissimilarOriginWindow) -> DissimilarOriginLocation {
         DissimilarOriginLocation {
             reflector: Reflector::new(),
diff --git a/components/script/dom/document.rs b/components/script/dom/document.rs
index 38f2ca87066..0150891d5fd 100644
--- a/components/script/dom/document.rs
+++ b/components/script/dom/document.rs
@@ -224,7 +224,7 @@ pub enum IsHTMLDocument {
 }
 
 #[derive(JSTraceable, MallocSizeOf)]
-#[unrooted_must_root_lint::must_root]
+#[crown::unrooted_must_root_lint::must_root]
 enum FocusTransaction {
     /// No focus operation is in effect.
     NotInTransaction,
@@ -2878,7 +2878,7 @@ impl Document {
             .or_insert_with(|| Dom::from_ref(context));
     }
 
-    #[allow(unrooted_must_root)]
+    #[allow(crown::unrooted_must_root)]
     pub fn flush_dirty_webgpu_canvases(&self) {
         self.dirty_webgpu_contexts
             .borrow_mut()
@@ -3817,7 +3817,7 @@ impl Document {
 
     /// Add a stylesheet owned by `owner` to the list of document sheets, in the
     /// correct tree position.
-    #[allow(unrooted_must_root)] // Owner needs to be rooted already necessarily.
+    #[allow(crown::unrooted_must_root)] // Owner needs to be rooted already necessarily.
     pub fn add_stylesheet(&self, owner: &Element, sheet: Arc<Stylesheet>) {
         let stylesheets = &mut *self.stylesheets.borrow_mut();
         let insertion_point = stylesheets
@@ -3850,7 +3850,7 @@ impl Document {
     }
 
     /// Remove a stylesheet owned by `owner` from the list of document sheets.
-    #[allow(unrooted_must_root)] // Owner needs to be rooted already necessarily.
+    #[allow(crown::unrooted_must_root)] // Owner needs to be rooted already necessarily.
     pub fn remove_stylesheet(&self, owner: &Element, s: &Arc<Stylesheet>) {
         match self.window.layout_chan() {
             Some(chan) => chan.send(Msg::RemoveStylesheet(s.clone())).unwrap(),
@@ -3876,7 +3876,7 @@ impl Document {
         })
     }
 
-    #[allow(unrooted_must_root)]
+    #[allow(crown::unrooted_must_root)]
     pub fn drain_pending_restyles(&self) -> Vec<(TrustedNodeAddress, PendingRestyle)> {
         self.pending_restyles
             .borrow_mut()
@@ -5358,7 +5358,7 @@ impl AnimationFrameCallback {
 }
 
 #[derive(Default, JSTraceable, MallocSizeOf)]
-#[unrooted_must_root_lint::must_root]
+#[crown::unrooted_must_root_lint::must_root]
 struct PendingInOrderScriptVec {
     scripts: DomRefCell<VecDeque<PendingScript>>,
 }
@@ -5396,7 +5396,7 @@ impl PendingInOrderScriptVec {
 }
 
 #[derive(JSTraceable, MallocSizeOf)]
-#[unrooted_must_root_lint::must_root]
+#[crown::unrooted_must_root_lint::must_root]
 struct PendingScript {
     element: Dom<HTMLScriptElement>,
     // TODO(sagudev): could this be all no_trace?
diff --git a/components/script/dom/documentorshadowroot.rs b/components/script/dom/documentorshadowroot.rs
index 647723e841f..9bbe435359b 100644
--- a/components/script/dom/documentorshadowroot.rs
+++ b/components/script/dom/documentorshadowroot.rs
@@ -27,7 +27,7 @@ use crate::dom::window::Window;
 use crate::stylesheet_set::StylesheetSetRef;
 
 #[derive(Clone, JSTraceable, MallocSizeOf)]
-#[unrooted_must_root_lint::must_root]
+#[crown::unrooted_must_root_lint::must_root]
 pub struct StyleSheetInDocument {
     #[ignore_malloc_size_of = "Arc"]
     #[no_trace]
@@ -68,7 +68,7 @@ impl ::style::stylesheets::StylesheetInDocument for StyleSheetInDocument {
 }
 
 // https://w3c.github.io/webcomponents/spec/shadow/#extensions-to-the-documentorshadowroot-mixin
-#[unrooted_must_root_lint::must_root]
+#[crown::unrooted_must_root_lint::must_root]
 #[derive(JSTraceable, MallocSizeOf)]
 pub struct DocumentOrShadowRoot {
     window: Dom<Window>,
@@ -199,7 +199,7 @@ impl DocumentOrShadowRoot {
     }
 
     /// Remove a stylesheet owned by `owner` from the list of document sheets.
-    #[allow(unrooted_must_root)] // Owner needs to be rooted already necessarily.
+    #[allow(crown::unrooted_must_root)] // Owner needs to be rooted already necessarily.
     pub fn remove_stylesheet(
         owner: &Element,
         s: &Arc<Stylesheet>,
@@ -220,7 +220,7 @@ impl DocumentOrShadowRoot {
 
     /// Add a stylesheet owned by `owner` to the list of document sheets, in the
     /// correct tree position.
-    #[allow(unrooted_must_root)] // Owner needs to be rooted already necessarily.
+    #[allow(crown::unrooted_must_root)] // Owner needs to be rooted already necessarily.
     pub fn add_stylesheet(
         owner: &Element,
         mut stylesheets: StylesheetSetRef<StyleSheetInDocument>,
diff --git a/components/script/dom/documenttype.rs b/components/script/dom/documenttype.rs
index f55eaac6c8f..3f2a0200db5 100644
--- a/components/script/dom/documenttype.rs
+++ b/components/script/dom/documenttype.rs
@@ -37,7 +37,7 @@ impl DocumentType {
             system_id: system_id.unwrap_or_default(),
         }
     }
-    #[allow(unrooted_must_root)]
+    #[allow(crown::unrooted_must_root)]
     pub fn new(
         name: DOMString,
         public_id: Option<DOMString>,
diff --git a/components/script/dom/dommatrix.rs b/components/script/dom/dommatrix.rs
index dd6aff6ea0f..23ec3a865c2 100644
--- a/components/script/dom/dommatrix.rs
+++ b/components/script/dom/dommatrix.rs
@@ -32,7 +32,7 @@ impl DOMMatrix {
         Self::new_with_proto(global, None, is2D, matrix)
     }
 
-    #[allow(unrooted_must_root)]
+    #[allow(crown::unrooted_must_root)]
     fn new_with_proto(
         global: &GlobalScope,
         proto: Option<HandleObject>,
diff --git a/components/script/dom/dommatrixreadonly.rs b/components/script/dom/dommatrixreadonly.rs
index 02f4357b98f..26413b02452 100644
--- a/components/script/dom/dommatrixreadonly.rs
+++ b/components/script/dom/dommatrixreadonly.rs
@@ -46,7 +46,7 @@ impl DOMMatrixReadOnly {
         Self::new_with_proto(global, None, is2D, matrix)
     }
 
-    #[allow(unrooted_must_root)]
+    #[allow(crown::unrooted_must_root)]
     fn new_with_proto(
         global: &GlobalScope,
         proto: Option<HandleObject>,
diff --git a/components/script/dom/dynamicmoduleowner.rs b/components/script/dom/dynamicmoduleowner.rs
index 28bd0636d3a..698ce88ee5a 100644
--- a/components/script/dom/dynamicmoduleowner.rs
+++ b/components/script/dom/dynamicmoduleowner.rs
@@ -30,7 +30,7 @@ pub struct DynamicModuleOwner {
 }
 
 impl DynamicModuleOwner {
-    #[allow(unrooted_must_root)]
+    #[allow(crown::unrooted_must_root)]
     fn new_inherited(promise: Rc<Promise>, id: DynamicModuleId) -> Self {
         DynamicModuleOwner {
             reflector_: Reflector::new(),
@@ -39,7 +39,7 @@ impl DynamicModuleOwner {
         }
     }
 
-    #[allow(unrooted_must_root)]
+    #[allow(crown::unrooted_must_root)]
     pub fn new(global: &GlobalScope, promise: Rc<Promise>, id: DynamicModuleId) -> DomRoot<Self> {
         reflect_dom_object(
             Box::new(DynamicModuleOwner::new_inherited(promise, id)),
diff --git a/components/script/dom/element.rs b/components/script/dom/element.rs
index cf8ab28a4e0..e0b9e93fdc7 100644
--- a/components/script/dom/element.rs
+++ b/components/script/dom/element.rs
@@ -3769,7 +3769,7 @@ impl ElementPerformFullscreenEnter {
 }
 
 impl TaskOnce for ElementPerformFullscreenEnter {
-    #[allow(unrooted_must_root)]
+    #[allow(crown::unrooted_must_root)]
     fn run_once(self) {
         let element = self.element.root();
         let promise = self.promise.root();
@@ -3820,7 +3820,7 @@ impl ElementPerformFullscreenExit {
 }
 
 impl TaskOnce for ElementPerformFullscreenExit {
-    #[allow(unrooted_must_root)]
+    #[allow(crown::unrooted_must_root)]
     fn run_once(self) {
         let element = self.element.root();
         let document = document_from_node(&*element);
diff --git a/components/script/dom/file.rs b/components/script/dom/file.rs
index 2e041e2112c..feddb935ecb 100644
--- a/components/script/dom/file.rs
+++ b/components/script/dom/file.rs
@@ -27,7 +27,7 @@ pub struct File {
 }
 
 impl File {
-    #[allow(unrooted_must_root)]
+    #[allow(crown::unrooted_must_root)]
     fn new_inherited(blob_impl: &BlobImpl, name: DOMString, modified: Option<i64>) -> File {
         File {
             blob: Blob::new_inherited(blob_impl),
@@ -52,7 +52,7 @@ impl File {
         Self::new_with_proto(global, None, blob_impl, name, modified)
     }
 
-    #[allow(unrooted_must_root)]
+    #[allow(crown::unrooted_must_root)]
     fn new_with_proto(
         global: &GlobalScope,
         proto: Option<HandleObject>,
diff --git a/components/script/dom/filelist.rs b/components/script/dom/filelist.rs
index 6b26bf2d722..d2b647273ba 100644
--- a/components/script/dom/filelist.rs
+++ b/components/script/dom/filelist.rs
@@ -20,7 +20,7 @@ pub struct FileList {
 }
 
 impl FileList {
-    #[allow(unrooted_must_root)]
+    #[allow(crown::unrooted_must_root)]
     fn new_inherited(files: Vec<Dom<File>>) -> FileList {
         FileList {
             reflector_: Reflector::new(),
@@ -28,7 +28,7 @@ impl FileList {
         }
     }
 
-    #[allow(unrooted_must_root)]
+    #[allow(crown::unrooted_must_root)]
     pub fn new(window: &Window, files: Vec<DomRoot<File>>) -> DomRoot<FileList> {
         reflect_dom_object(
             Box::new(FileList::new_inherited(
diff --git a/components/script/dom/formdata.rs b/components/script/dom/formdata.rs
index f0283695825..444062678f0 100644
--- a/components/script/dom/formdata.rs
+++ b/components/script/dom/formdata.rs
@@ -92,7 +92,7 @@ impl FormDataMethods for FormData {
             .push((NoTrace(LocalName::from(name.0)), datum));
     }
 
-    #[allow(unrooted_must_root)]
+    #[allow(crown::unrooted_must_root)]
     // https://xhr.spec.whatwg.org/#dom-formdata-append
     fn Append_(&self, name: USVString, blob: &Blob, filename: Option<USVString>) {
         let datum = FormDatum {
@@ -173,7 +173,7 @@ impl FormDataMethods for FormData {
         ));
     }
 
-    #[allow(unrooted_must_root)]
+    #[allow(crown::unrooted_must_root)]
     // https://xhr.spec.whatwg.org/#dom-formdata-set
     fn Set_(&self, name: USVString, blob: &Blob, filename: Option<USVString>) {
         let mut data = self.data.borrow_mut();
diff --git a/components/script/dom/gainnode.rs b/components/script/dom/gainnode.rs
index 5bcb5cdff6f..e05a5d0f24c 100644
--- a/components/script/dom/gainnode.rs
+++ b/components/script/dom/gainnode.rs
@@ -30,7 +30,7 @@ pub struct GainNode {
 }
 
 impl GainNode {
-    #[allow(unrooted_must_root)]
+    #[allow(crown::unrooted_must_root)]
     pub fn new_inherited(
         window: &Window,
         context: &BaseAudioContext,
@@ -71,7 +71,7 @@ impl GainNode {
         Self::new_with_proto(window, None, context, options)
     }
 
-    #[allow(unrooted_must_root)]
+    #[allow(crown::unrooted_must_root)]
     fn new_with_proto(
         window: &Window,
         proto: Option<HandleObject>,
diff --git a/components/script/dom/gamepadbuttonlist.rs b/components/script/dom/gamepadbuttonlist.rs
index 07bf5118f51..e28e33e05a8 100644
--- a/components/script/dom/gamepadbuttonlist.rs
+++ b/components/script/dom/gamepadbuttonlist.rs
@@ -19,7 +19,7 @@ pub struct GamepadButtonList {
 // TODO: support gamepad discovery
 #[allow(dead_code)]
 impl GamepadButtonList {
-    #[allow(unrooted_must_root)]
+    #[allow(crown::unrooted_must_root)]
     fn new_inherited(list: &[&GamepadButton]) -> GamepadButtonList {
         GamepadButtonList {
             reflector_: Reflector::new(),
diff --git a/components/script/dom/globalscope.rs b/components/script/dom/globalscope.rs
index 248bd5ba337..6a1467d7076 100644
--- a/components/script/dom/globalscope.rs
+++ b/components/script/dom/globalscope.rs
@@ -418,7 +418,7 @@ enum BlobResult {
 
 /// Data representing a message-port managed by this global.
 #[derive(JSTraceable, MallocSizeOf)]
-#[unrooted_must_root_lint::must_root]
+#[crown::unrooted_must_root_lint::must_root]
 pub struct ManagedMessagePort {
     /// The DOM port.
     dom_port: Dom<MessagePort>,
@@ -438,7 +438,7 @@ pub struct ManagedMessagePort {
 
 /// State representing whether this global is currently managing broadcast channels.
 #[derive(JSTraceable, MallocSizeOf)]
-#[unrooted_must_root_lint::must_root]
+#[crown::unrooted_must_root_lint::must_root]
 pub enum BroadcastChannelState {
     /// The broadcast-channel router id for this global, and a queue of managed channels.
     /// Step 9, "sort destinations"
@@ -455,7 +455,7 @@ pub enum BroadcastChannelState {
 
 /// State representing whether this global is currently managing messageports.
 #[derive(JSTraceable, MallocSizeOf)]
-#[unrooted_must_root_lint::must_root]
+#[crown::unrooted_must_root_lint::must_root]
 pub enum MessagePortState {
     /// The message-port router id for this global, and a map of managed ports.
     Managed(
diff --git a/components/script/dom/gpu.rs b/components/script/dom/gpu.rs
index def7c4c3883..af8620c3a8c 100644
--- a/components/script/dom/gpu.rs
+++ b/components/script/dom/gpu.rs
@@ -54,7 +54,7 @@ struct WGPUResponse<T: AsyncWGPUListener + DomObject> {
 }
 
 impl<T: AsyncWGPUListener + DomObject> WGPUResponse<T> {
-    #[allow(unrooted_must_root)]
+    #[allow(crown::unrooted_must_root)]
     fn response(self, response: WebGPUResponseResult) {
         let promise = self.trusted.root();
         self.receiver.root().handle_response(response, &promise);
diff --git a/components/script/dom/gpusupportedfeatures.rs b/components/script/dom/gpusupportedfeatures.rs
index 9cdde31c45e..e0abd5b9def 100644
--- a/components/script/dom/gpusupportedfeatures.rs
+++ b/components/script/dom/gpusupportedfeatures.rs
@@ -126,7 +126,7 @@ impl FromStr for GPUFeatureName {
 }
 
 // this error is wrong because if we inline Self::Key and Self::Value all errors are gone
-#[allow(unrooted_must_root)]
+#[allow(crown::unrooted_must_root)]
 impl Setlike for GPUSupportedFeatures {
     type Key = DOMString;
 
diff --git a/components/script/dom/htmlanchorelement.rs b/components/script/dom/htmlanchorelement.rs
index ecae87f2d07..a347e3d6e9a 100644
--- a/components/script/dom/htmlanchorelement.rs
+++ b/components/script/dom/htmlanchorelement.rs
@@ -61,7 +61,7 @@ impl HTMLAnchorElement {
         }
     }
 
-    #[allow(unrooted_must_root)]
+    #[allow(crown::unrooted_must_root)]
     pub fn new(
         local_name: LocalName,
         prefix: Option<Prefix>,
diff --git a/components/script/dom/htmlareaelement.rs b/components/script/dom/htmlareaelement.rs
index 3d745ab64a8..4a414e21f04 100644
--- a/components/script/dom/htmlareaelement.rs
+++ b/components/script/dom/htmlareaelement.rs
@@ -251,7 +251,7 @@ impl HTMLAreaElement {
         }
     }
 
-    #[allow(unrooted_must_root)]
+    #[allow(crown::unrooted_must_root)]
     pub fn new(
         local_name: LocalName,
         prefix: Option<Prefix>,
diff --git a/components/script/dom/htmlaudioelement.rs b/components/script/dom/htmlaudioelement.rs
index ef9fa230f5f..d48c6c90ab3 100644
--- a/components/script/dom/htmlaudioelement.rs
+++ b/components/script/dom/htmlaudioelement.rs
@@ -34,7 +34,7 @@ impl HTMLAudioElement {
         }
     }
 
-    #[allow(unrooted_must_root)]
+    #[allow(crown::unrooted_must_root)]
     pub fn new(
         local_name: LocalName,
         prefix: Option<Prefix>,
diff --git a/components/script/dom/htmlbaseelement.rs b/components/script/dom/htmlbaseelement.rs
index 30e6ca7851a..59725b2161e 100644
--- a/components/script/dom/htmlbaseelement.rs
+++ b/components/script/dom/htmlbaseelement.rs
@@ -34,7 +34,7 @@ impl HTMLBaseElement {
         }
     }
 
-    #[allow(unrooted_must_root)]
+    #[allow(crown::unrooted_must_root)]
     pub fn new(
         local_name: LocalName,
         prefix: Option<Prefix>,
diff --git a/components/script/dom/htmlbodyelement.rs b/components/script/dom/htmlbodyelement.rs
index c70b716bbf4..e2275c4a095 100644
--- a/components/script/dom/htmlbodyelement.rs
+++ b/components/script/dom/htmlbodyelement.rs
@@ -43,7 +43,7 @@ impl HTMLBodyElement {
         }
     }
 
-    #[allow(unrooted_must_root)]
+    #[allow(crown::unrooted_must_root)]
     pub fn new(
         local_name: LocalName,
         prefix: Option<Prefix>,
diff --git a/components/script/dom/htmlbrelement.rs b/components/script/dom/htmlbrelement.rs
index 129aef7d4c3..a8e06cd4dd1 100644
--- a/components/script/dom/htmlbrelement.rs
+++ b/components/script/dom/htmlbrelement.rs
@@ -27,7 +27,7 @@ impl HTMLBRElement {
         }
     }
 
-    #[allow(unrooted_must_root)]
+    #[allow(crown::unrooted_must_root)]
     pub fn new(
         local_name: LocalName,
         prefix: Option<Prefix>,
diff --git a/components/script/dom/htmlbuttonelement.rs b/components/script/dom/htmlbuttonelement.rs
index 333f3538745..56c60fe2190 100755
--- a/components/script/dom/htmlbuttonelement.rs
+++ b/components/script/dom/htmlbuttonelement.rs
@@ -68,7 +68,7 @@ impl HTMLButtonElement {
         }
     }
 
-    #[allow(unrooted_must_root)]
+    #[allow(crown::unrooted_must_root)]
     pub fn new(
         local_name: LocalName,
         prefix: Option<Prefix>,
diff --git a/components/script/dom/htmlcanvaselement.rs b/components/script/dom/htmlcanvaselement.rs
index 4f82a54e5bd..bb35853f706 100644
--- a/components/script/dom/htmlcanvaselement.rs
+++ b/components/script/dom/htmlcanvaselement.rs
@@ -52,7 +52,7 @@ use crate::script_runtime::JSContext;
 const DEFAULT_WIDTH: u32 = 300;
 const DEFAULT_HEIGHT: u32 = 150;
 
-#[unrooted_must_root_lint::must_root]
+#[crown::unrooted_must_root_lint::must_root]
 #[derive(Clone, JSTraceable, MallocSizeOf)]
 pub enum CanvasContext {
     Context2d(Dom<CanvasRenderingContext2D>),
@@ -79,7 +79,7 @@ impl HTMLCanvasElement {
         }
     }
 
-    #[allow(unrooted_must_root)]
+    #[allow(crown::unrooted_must_root)]
     pub fn new(
         local_name: LocalName,
         prefix: Option<Prefix>,
diff --git a/components/script/dom/htmlcollection.rs b/components/script/dom/htmlcollection.rs
index 560ea052392..dbbb7dffb6d 100644
--- a/components/script/dom/htmlcollection.rs
+++ b/components/script/dom/htmlcollection.rs
@@ -69,7 +69,7 @@ pub struct HTMLCollection {
 }
 
 impl HTMLCollection {
-    #[allow(unrooted_must_root)]
+    #[allow(crown::unrooted_must_root)]
     pub fn new_inherited(
         root: &Node,
         filter: Box<dyn CollectionFilter + 'static>,
@@ -99,7 +99,7 @@ impl HTMLCollection {
         Self::new(window, root, Box::new(NoFilter))
     }
 
-    #[allow(unrooted_must_root)]
+    #[allow(crown::unrooted_must_root)]
     pub fn new(
         window: &Window,
         root: &Node,
diff --git a/components/script/dom/htmldataelement.rs b/components/script/dom/htmldataelement.rs
index 725bdd4abcc..4b59199edb7 100644
--- a/components/script/dom/htmldataelement.rs
+++ b/components/script/dom/htmldataelement.rs
@@ -29,7 +29,7 @@ impl HTMLDataElement {
         }
     }
 
-    #[allow(unrooted_must_root)]
+    #[allow(crown::unrooted_must_root)]
     pub fn new(
         local_name: LocalName,
         prefix: Option<Prefix>,
diff --git a/components/script/dom/htmldatalistelement.rs b/components/script/dom/htmldatalistelement.rs
index 311d1909f17..4d74e2aded5 100644
--- a/components/script/dom/htmldatalistelement.rs
+++ b/components/script/dom/htmldatalistelement.rs
@@ -32,7 +32,7 @@ impl HTMLDataListElement {
         }
     }
 
-    #[allow(unrooted_must_root)]
+    #[allow(crown::unrooted_must_root)]
     pub fn new(
         local_name: LocalName,
         prefix: Option<Prefix>,
diff --git a/components/script/dom/htmldetailselement.rs b/components/script/dom/htmldetailselement.rs
index 7d10b1c91f3..f620f7d576a 100644
--- a/components/script/dom/htmldetailselement.rs
+++ b/components/script/dom/htmldetailselement.rs
@@ -39,7 +39,7 @@ impl HTMLDetailsElement {
         }
     }
 
-    #[allow(unrooted_must_root)]
+    #[allow(crown::unrooted_must_root)]
     pub fn new(
         local_name: LocalName,
         prefix: Option<Prefix>,
diff --git a/components/script/dom/htmldialogelement.rs b/components/script/dom/htmldialogelement.rs
index 18d9eac65a0..bd21001ab6b 100644
--- a/components/script/dom/htmldialogelement.rs
+++ b/components/script/dom/htmldialogelement.rs
@@ -35,7 +35,7 @@ impl HTMLDialogElement {
         }
     }
 
-    #[allow(unrooted_must_root)]
+    #[allow(crown::unrooted_must_root)]
     pub fn new(
         local_name: LocalName,
         prefix: Option<Prefix>,
diff --git a/components/script/dom/htmldirectoryelement.rs b/components/script/dom/htmldirectoryelement.rs
index 552d5572728..2b11f61fced 100644
--- a/components/script/dom/htmldirectoryelement.rs
+++ b/components/script/dom/htmldirectoryelement.rs
@@ -27,7 +27,7 @@ impl HTMLDirectoryElement {
         }
     }
 
-    #[allow(unrooted_must_root)]
+    #[allow(crown::unrooted_must_root)]
     pub fn new(
         local_name: LocalName,
         prefix: Option<Prefix>,
diff --git a/components/script/dom/htmldivelement.rs b/components/script/dom/htmldivelement.rs
index d16ac4c6057..af25f8a6731 100644
--- a/components/script/dom/htmldivelement.rs
+++ b/components/script/dom/htmldivelement.rs
@@ -29,7 +29,7 @@ impl HTMLDivElement {
         }
     }
 
-    #[allow(unrooted_must_root)]
+    #[allow(crown::unrooted_must_root)]
     pub fn new(
         local_name: LocalName,
         prefix: Option<Prefix>,
diff --git a/components/script/dom/htmldlistelement.rs b/components/script/dom/htmldlistelement.rs
index 970db5a221b..828927fbb69 100644
--- a/components/script/dom/htmldlistelement.rs
+++ b/components/script/dom/htmldlistelement.rs
@@ -27,7 +27,7 @@ impl HTMLDListElement {
         }
     }
 
-    #[allow(unrooted_must_root)]
+    #[allow(crown::unrooted_must_root)]
     pub fn new(
         local_name: LocalName,
         prefix: Option<Prefix>,
diff --git a/components/script/dom/htmlelement.rs b/components/script/dom/htmlelement.rs
index ffc9dd887a3..7d546f154fb 100644
--- a/components/script/dom/htmlelement.rs
+++ b/components/script/dom/htmlelement.rs
@@ -80,7 +80,7 @@ impl HTMLElement {
         }
     }
 
-    #[allow(unrooted_must_root)]
+    #[allow(crown::unrooted_must_root)]
     pub fn new(
         local_name: LocalName,
         prefix: Option<Prefix>,
diff --git a/components/script/dom/htmlembedelement.rs b/components/script/dom/htmlembedelement.rs
index ddfbc8675cd..714798cfe80 100644
--- a/components/script/dom/htmlembedelement.rs
+++ b/components/script/dom/htmlembedelement.rs
@@ -27,7 +27,7 @@ impl HTMLEmbedElement {
         }
     }
 
-    #[allow(unrooted_must_root)]
+    #[allow(crown::unrooted_must_root)]
     pub fn new(
         local_name: LocalName,
         prefix: Option<Prefix>,
diff --git a/components/script/dom/htmlfieldsetelement.rs b/components/script/dom/htmlfieldsetelement.rs
index ff5ac4e26bc..b29f4b471b0 100644
--- a/components/script/dom/htmlfieldsetelement.rs
+++ b/components/script/dom/htmlfieldsetelement.rs
@@ -50,7 +50,7 @@ impl HTMLFieldSetElement {
         }
     }
 
-    #[allow(unrooted_must_root)]
+    #[allow(crown::unrooted_must_root)]
     pub fn new(
         local_name: LocalName,
         prefix: Option<Prefix>,
diff --git a/components/script/dom/htmlfontelement.rs b/components/script/dom/htmlfontelement.rs
index 9d228516d38..fb1fa3f53a9 100644
--- a/components/script/dom/htmlfontelement.rs
+++ b/components/script/dom/htmlfontelement.rs
@@ -37,7 +37,7 @@ impl HTMLFontElement {
         }
     }
 
-    #[allow(unrooted_must_root)]
+    #[allow(crown::unrooted_must_root)]
     pub fn new(
         local_name: LocalName,
         prefix: Option<Prefix>,
diff --git a/components/script/dom/htmlformelement.rs b/components/script/dom/htmlformelement.rs
index 9896ec75cf8..bbd12d4d491 100644
--- a/components/script/dom/htmlformelement.rs
+++ b/components/script/dom/htmlformelement.rs
@@ -123,7 +123,7 @@ impl HTMLFormElement {
         }
     }
 
-    #[allow(unrooted_must_root)]
+    #[allow(crown::unrooted_must_root)]
     pub fn new(
         local_name: LocalName,
         prefix: Option<Prefix>,
diff --git a/components/script/dom/htmlframeelement.rs b/components/script/dom/htmlframeelement.rs
index 8dae2d38ce5..93b0dc0722b 100644
--- a/components/script/dom/htmlframeelement.rs
+++ b/components/script/dom/htmlframeelement.rs
@@ -27,7 +27,7 @@ impl HTMLFrameElement {
         }
     }
 
-    #[allow(unrooted_must_root)]
+    #[allow(crown::unrooted_must_root)]
     pub fn new(
         local_name: LocalName,
         prefix: Option<Prefix>,
diff --git a/components/script/dom/htmlframesetelement.rs b/components/script/dom/htmlframesetelement.rs
index db1ab1c314c..723435b7f46 100644
--- a/components/script/dom/htmlframesetelement.rs
+++ b/components/script/dom/htmlframesetelement.rs
@@ -30,7 +30,7 @@ impl HTMLFrameSetElement {
         }
     }
 
-    #[allow(unrooted_must_root)]
+    #[allow(crown::unrooted_must_root)]
     pub fn new(
         local_name: LocalName,
         prefix: Option<Prefix>,
diff --git a/components/script/dom/htmlheadelement.rs b/components/script/dom/htmlheadelement.rs
index 92e21e1efa5..ad95bbd9224 100644
--- a/components/script/dom/htmlheadelement.rs
+++ b/components/script/dom/htmlheadelement.rs
@@ -33,7 +33,7 @@ impl HTMLHeadElement {
         }
     }
 
-    #[allow(unrooted_must_root)]
+    #[allow(crown::unrooted_must_root)]
     pub fn new(
         local_name: LocalName,
         prefix: Option<Prefix>,
diff --git a/components/script/dom/htmlheadingelement.rs b/components/script/dom/htmlheadingelement.rs
index b701b5d7d7f..0cc17d69221 100644
--- a/components/script/dom/htmlheadingelement.rs
+++ b/components/script/dom/htmlheadingelement.rs
@@ -40,7 +40,7 @@ impl HTMLHeadingElement {
         }
     }
 
-    #[allow(unrooted_must_root)]
+    #[allow(crown::unrooted_must_root)]
     pub fn new(
         local_name: LocalName,
         prefix: Option<Prefix>,
diff --git a/components/script/dom/htmlhrelement.rs b/components/script/dom/htmlhrelement.rs
index 6bc4c4a73d7..f28a592000b 100644
--- a/components/script/dom/htmlhrelement.rs
+++ b/components/script/dom/htmlhrelement.rs
@@ -34,7 +34,7 @@ impl HTMLHRElement {
         }
     }
 
-    #[allow(unrooted_must_root)]
+    #[allow(crown::unrooted_must_root)]
     pub fn new(
         local_name: LocalName,
         prefix: Option<Prefix>,
diff --git a/components/script/dom/htmlhtmlelement.rs b/components/script/dom/htmlhtmlelement.rs
index c6c4566a605..7331a0f7513 100644
--- a/components/script/dom/htmlhtmlelement.rs
+++ b/components/script/dom/htmlhtmlelement.rs
@@ -29,7 +29,7 @@ impl HTMLHtmlElement {
         }
     }
 
-    #[allow(unrooted_must_root)]
+    #[allow(crown::unrooted_must_root)]
     pub fn new(
         localName: LocalName,
         prefix: Option<Prefix>,
diff --git a/components/script/dom/htmliframeelement.rs b/components/script/dom/htmliframeelement.rs
index 5481e108a60..4119bb9c86c 100644
--- a/components/script/dom/htmliframeelement.rs
+++ b/components/script/dom/htmliframeelement.rs
@@ -446,7 +446,7 @@ impl HTMLIFrameElement {
         }
     }
 
-    #[allow(unrooted_must_root)]
+    #[allow(crown::unrooted_must_root)]
     pub fn new(
         local_name: LocalName,
         prefix: Option<Prefix>,
diff --git a/components/script/dom/htmlimageelement.rs b/components/script/dom/htmlimageelement.rs
index be840f36f16..91ba8dc2499 100644
--- a/components/script/dom/htmlimageelement.rs
+++ b/components/script/dom/htmlimageelement.rs
@@ -141,7 +141,7 @@ enum ImageRequestPhase {
     Current,
 }
 #[derive(JSTraceable, MallocSizeOf)]
-#[unrooted_must_root_lint::must_root]
+#[crown::unrooted_must_root_lint::must_root]
 struct ImageRequest {
     state: State,
     #[no_trace]
@@ -1249,7 +1249,7 @@ impl HTMLImageElement {
         }
     }
 
-    #[allow(unrooted_must_root)]
+    #[allow(crown::unrooted_must_root)]
     pub fn new(
         local_name: LocalName,
         prefix: Option<Prefix>,
diff --git a/components/script/dom/htmlinputelement.rs b/components/script/dom/htmlinputelement.rs
index 8c082a70e49..994691d956f 100755
--- a/components/script/dom/htmlinputelement.rs
+++ b/components/script/dom/htmlinputelement.rs
@@ -327,7 +327,7 @@ impl HTMLInputElement {
         }
     }
 
-    #[allow(unrooted_must_root)]
+    #[allow(crown::unrooted_must_root)]
     pub fn new(
         local_name: LocalName,
         prefix: Option<Prefix>,
@@ -2066,7 +2066,7 @@ impl HTMLInputElement {
         }
     }
 
-    #[allow(unrooted_must_root)]
+    #[allow(crown::unrooted_must_root)]
     fn selection(&self) -> TextControlSelection<Self> {
         TextControlSelection::new(&self, &self.textinput)
     }
diff --git a/components/script/dom/htmllabelelement.rs b/components/script/dom/htmllabelelement.rs
index 40d871e3415..6c5ba56cfb3 100644
--- a/components/script/dom/htmllabelelement.rs
+++ b/components/script/dom/htmllabelelement.rs
@@ -42,7 +42,7 @@ impl HTMLLabelElement {
         }
     }
 
-    #[allow(unrooted_must_root)]
+    #[allow(crown::unrooted_must_root)]
     pub fn new(
         local_name: LocalName,
         prefix: Option<Prefix>,
diff --git a/components/script/dom/htmllegendelement.rs b/components/script/dom/htmllegendelement.rs
index 2fd26acec77..a44037fdbba 100644
--- a/components/script/dom/htmllegendelement.rs
+++ b/components/script/dom/htmllegendelement.rs
@@ -36,7 +36,7 @@ impl HTMLLegendElement {
         }
     }
 
-    #[allow(unrooted_must_root)]
+    #[allow(crown::unrooted_must_root)]
     pub fn new(
         local_name: LocalName,
         prefix: Option<Prefix>,
diff --git a/components/script/dom/htmllielement.rs b/components/script/dom/htmllielement.rs
index 58219171d3c..c3a7a8e1eee 100644
--- a/components/script/dom/htmllielement.rs
+++ b/components/script/dom/htmllielement.rs
@@ -32,7 +32,7 @@ impl HTMLLIElement {
         }
     }
 
-    #[allow(unrooted_must_root)]
+    #[allow(crown::unrooted_must_root)]
     pub fn new(
         local_name: LocalName,
         prefix: Option<Prefix>,
diff --git a/components/script/dom/htmllinkelement.rs b/components/script/dom/htmllinkelement.rs
index a9cd25e0510..d77212e2621 100644
--- a/components/script/dom/htmllinkelement.rs
+++ b/components/script/dom/htmllinkelement.rs
@@ -92,7 +92,7 @@ impl HTMLLinkElement {
         }
     }
 
-    #[allow(unrooted_must_root)]
+    #[allow(crown::unrooted_must_root)]
     pub fn new(
         local_name: LocalName,
         prefix: Option<Prefix>,
@@ -115,7 +115,7 @@ impl HTMLLinkElement {
 
     // FIXME(emilio): These methods are duplicated with
     // HTMLStyleElement::set_stylesheet.
-    #[allow(unrooted_must_root)]
+    #[allow(crown::unrooted_must_root)]
     pub fn set_stylesheet(&self, s: Arc<Stylesheet>) {
         let stylesheets_owner = stylesheets_owner_from_node(self);
         if let Some(ref s) = *self.stylesheet.borrow() {
diff --git a/components/script/dom/htmlmapelement.rs b/components/script/dom/htmlmapelement.rs
index 7367f188de7..adf7c7b1b24 100644
--- a/components/script/dom/htmlmapelement.rs
+++ b/components/script/dom/htmlmapelement.rs
@@ -29,7 +29,7 @@ impl HTMLMapElement {
         }
     }
 
-    #[allow(unrooted_must_root)]
+    #[allow(crown::unrooted_must_root)]
     pub fn new(
         local_name: LocalName,
         prefix: Option<Prefix>,
diff --git a/components/script/dom/htmlmediaelement.rs b/components/script/dom/htmlmediaelement.rs
index 6f2337b819f..824aadd1ee2 100644
--- a/components/script/dom/htmlmediaelement.rs
+++ b/components/script/dom/htmlmediaelement.rs
@@ -282,7 +282,7 @@ impl VideoFrameRenderer for MediaFrameRenderer {
     }
 }
 
-#[unrooted_must_root_lint::must_root]
+#[crown::unrooted_must_root_lint::must_root]
 #[derive(JSTraceable, MallocSizeOf)]
 enum SrcObject {
     MediaStream(Dom<MediaStream>),
@@ -290,7 +290,7 @@ enum SrcObject {
 }
 
 impl From<MediaStreamOrBlob> for SrcObject {
-    #[allow(unrooted_must_root)]
+    #[allow(crown::unrooted_must_root)]
     fn from(src_object: MediaStreamOrBlob) -> SrcObject {
         match src_object {
             MediaStreamOrBlob::Blob(blob) => SrcObject::Blob(Dom::from_ref(&*blob)),
@@ -1207,9 +1207,9 @@ impl HTMLMediaElement {
     /// does not take a list of promises to fulfill. Callers cannot just pop
     /// the front list off of `in_flight_play_promises_queue` and later fulfill
     /// the promises because that would mean putting
-    /// `#[allow(unrooted_must_root)]` on even more functions, potentially
+    /// `#[allow(crown::unrooted_must_root)]` on even more functions, potentially
     /// hiding actual safety bugs.
-    #[allow(unrooted_must_root)]
+    #[allow(crown::unrooted_must_root)]
     fn fulfill_in_flight_play_promises<F>(&self, f: F)
     where
         F: FnOnce(),
diff --git a/components/script/dom/htmlmenuelement.rs b/components/script/dom/htmlmenuelement.rs
index 10ab5116f75..3d799f454f7 100644
--- a/components/script/dom/htmlmenuelement.rs
+++ b/components/script/dom/htmlmenuelement.rs
@@ -28,7 +28,7 @@ impl HTMLMenuElement {
         }
     }
 
-    #[allow(unrooted_must_root)]
+    #[allow(crown::unrooted_must_root)]
     pub fn new(
         local_name: LocalName,
         prefix: Option<Prefix>,
diff --git a/components/script/dom/htmlmetaelement.rs b/components/script/dom/htmlmetaelement.rs
index 4000035b0ca..61ec43ac96a 100644
--- a/components/script/dom/htmlmetaelement.rs
+++ b/components/script/dom/htmlmetaelement.rs
@@ -36,7 +36,7 @@ impl HTMLMetaElement {
         }
     }
 
-    #[allow(unrooted_must_root)]
+    #[allow(crown::unrooted_must_root)]
     pub fn new(
         local_name: LocalName,
         prefix: Option<Prefix>,
diff --git a/components/script/dom/htmlmeterelement.rs b/components/script/dom/htmlmeterelement.rs
index 03859ee9689..917258a1ea8 100644
--- a/components/script/dom/htmlmeterelement.rs
+++ b/components/script/dom/htmlmeterelement.rs
@@ -32,7 +32,7 @@ impl HTMLMeterElement {
         }
     }
 
-    #[allow(unrooted_must_root)]
+    #[allow(crown::unrooted_must_root)]
     pub fn new(
         local_name: LocalName,
         prefix: Option<Prefix>,
diff --git a/components/script/dom/htmlmodelement.rs b/components/script/dom/htmlmodelement.rs
index 68c731c189e..7a3356434b8 100644
--- a/components/script/dom/htmlmodelement.rs
+++ b/components/script/dom/htmlmodelement.rs
@@ -27,7 +27,7 @@ impl HTMLModElement {
         }
     }
 
-    #[allow(unrooted_must_root)]
+    #[allow(crown::unrooted_must_root)]
     pub fn new(
         local_name: LocalName,
         prefix: Option<Prefix>,
diff --git a/components/script/dom/htmlobjectelement.rs b/components/script/dom/htmlobjectelement.rs
index 06509e66497..4365034c2c8 100755
--- a/components/script/dom/htmlobjectelement.rs
+++ b/components/script/dom/htmlobjectelement.rs
@@ -49,7 +49,7 @@ impl HTMLObjectElement {
         }
     }
 
-    #[allow(unrooted_must_root)]
+    #[allow(crown::unrooted_must_root)]
     pub fn new(
         local_name: LocalName,
         prefix: Option<Prefix>,
diff --git a/components/script/dom/htmlolistelement.rs b/components/script/dom/htmlolistelement.rs
index cba1baad27d..1c4c928f8b3 100644
--- a/components/script/dom/htmlolistelement.rs
+++ b/components/script/dom/htmlolistelement.rs
@@ -27,7 +27,7 @@ impl HTMLOListElement {
         }
     }
 
-    #[allow(unrooted_must_root)]
+    #[allow(crown::unrooted_must_root)]
     pub fn new(
         local_name: LocalName,
         prefix: Option<Prefix>,
diff --git a/components/script/dom/htmloptgroupelement.rs b/components/script/dom/htmloptgroupelement.rs
index 881ec922cd4..2d85c8f057c 100644
--- a/components/script/dom/htmloptgroupelement.rs
+++ b/components/script/dom/htmloptgroupelement.rs
@@ -42,7 +42,7 @@ impl HTMLOptGroupElement {
         }
     }
 
-    #[allow(unrooted_must_root)]
+    #[allow(crown::unrooted_must_root)]
     pub fn new(
         local_name: LocalName,
         prefix: Option<Prefix>,
diff --git a/components/script/dom/htmloptionelement.rs b/components/script/dom/htmloptionelement.rs
index 6a919c84df3..37e6922f787 100644
--- a/components/script/dom/htmloptionelement.rs
+++ b/components/script/dom/htmloptionelement.rs
@@ -65,7 +65,7 @@ impl HTMLOptionElement {
         }
     }
 
-    #[allow(unrooted_must_root)]
+    #[allow(crown::unrooted_must_root)]
     pub fn new(
         local_name: LocalName,
         prefix: Option<Prefix>,
diff --git a/components/script/dom/htmloutputelement.rs b/components/script/dom/htmloutputelement.rs
index e444a19c60d..01a3df05e6d 100644
--- a/components/script/dom/htmloutputelement.rs
+++ b/components/script/dom/htmloutputelement.rs
@@ -46,7 +46,7 @@ impl HTMLOutputElement {
         }
     }
 
-    #[allow(unrooted_must_root)]
+    #[allow(crown::unrooted_must_root)]
     pub fn new(
         local_name: LocalName,
         prefix: Option<Prefix>,
diff --git a/components/script/dom/htmlparagraphelement.rs b/components/script/dom/htmlparagraphelement.rs
index 0609f355575..9ac3367738a 100644
--- a/components/script/dom/htmlparagraphelement.rs
+++ b/components/script/dom/htmlparagraphelement.rs
@@ -27,7 +27,7 @@ impl HTMLParagraphElement {
         }
     }
 
-    #[allow(unrooted_must_root)]
+    #[allow(crown::unrooted_must_root)]
     pub fn new(
         local_name: LocalName,
         prefix: Option<Prefix>,
diff --git a/components/script/dom/htmlparamelement.rs b/components/script/dom/htmlparamelement.rs
index 4b550346877..c4490854f27 100644
--- a/components/script/dom/htmlparamelement.rs
+++ b/components/script/dom/htmlparamelement.rs
@@ -27,7 +27,7 @@ impl HTMLParamElement {
         }
     }
 
-    #[allow(unrooted_must_root)]
+    #[allow(crown::unrooted_must_root)]
     pub fn new(
         local_name: LocalName,
         prefix: Option<Prefix>,
diff --git a/components/script/dom/htmlpictureelement.rs b/components/script/dom/htmlpictureelement.rs
index 51b93857bfe..79313701b43 100644
--- a/components/script/dom/htmlpictureelement.rs
+++ b/components/script/dom/htmlpictureelement.rs
@@ -27,7 +27,7 @@ impl HTMLPictureElement {
         }
     }
 
-    #[allow(unrooted_must_root)]
+    #[allow(crown::unrooted_must_root)]
     pub fn new(
         local_name: LocalName,
         prefix: Option<Prefix>,
diff --git a/components/script/dom/htmlpreelement.rs b/components/script/dom/htmlpreelement.rs
index 9eb27ebd820..7d86b03de99 100644
--- a/components/script/dom/htmlpreelement.rs
+++ b/components/script/dom/htmlpreelement.rs
@@ -27,7 +27,7 @@ impl HTMLPreElement {
         }
     }
 
-    #[allow(unrooted_must_root)]
+    #[allow(crown::unrooted_must_root)]
     pub fn new(
         local_name: LocalName,
         prefix: Option<Prefix>,
diff --git a/components/script/dom/htmlprogresselement.rs b/components/script/dom/htmlprogresselement.rs
index 79d73b2e338..62f05a5c7db 100644
--- a/components/script/dom/htmlprogresselement.rs
+++ b/components/script/dom/htmlprogresselement.rs
@@ -34,7 +34,7 @@ impl HTMLProgressElement {
         }
     }
 
-    #[allow(unrooted_must_root)]
+    #[allow(crown::unrooted_must_root)]
     pub fn new(
         local_name: LocalName,
         prefix: Option<Prefix>,
diff --git a/components/script/dom/htmlquoteelement.rs b/components/script/dom/htmlquoteelement.rs
index acd8c3521be..3254ca5b7e7 100644
--- a/components/script/dom/htmlquoteelement.rs
+++ b/components/script/dom/htmlquoteelement.rs
@@ -27,7 +27,7 @@ impl HTMLQuoteElement {
         }
     }
 
-    #[allow(unrooted_must_root)]
+    #[allow(crown::unrooted_must_root)]
     pub fn new(
         local_name: LocalName,
         prefix: Option<Prefix>,
diff --git a/components/script/dom/htmlscriptelement.rs b/components/script/dom/htmlscriptelement.rs
index 9f0ad234662..e7b71e853e1 100644
--- a/components/script/dom/htmlscriptelement.rs
+++ b/components/script/dom/htmlscriptelement.rs
@@ -193,7 +193,7 @@ impl HTMLScriptElement {
         }
     }
 
-    #[allow(unrooted_must_root)]
+    #[allow(crown::unrooted_must_root)]
     pub fn new(
         local_name: LocalName,
         prefix: Option<Prefix>,
diff --git a/components/script/dom/htmlselectelement.rs b/components/script/dom/htmlselectelement.rs
index c4d133e922c..9b301fb6464 100755
--- a/components/script/dom/htmlselectelement.rs
+++ b/components/script/dom/htmlselectelement.rs
@@ -91,7 +91,7 @@ impl HTMLSelectElement {
         }
     }
 
-    #[allow(unrooted_must_root)]
+    #[allow(crown::unrooted_must_root)]
     pub fn new(
         local_name: LocalName,
         prefix: Option<Prefix>,
diff --git a/components/script/dom/htmlsourceelement.rs b/components/script/dom/htmlsourceelement.rs
index 7948fb90c7e..0ef9d96df2d 100644
--- a/components/script/dom/htmlsourceelement.rs
+++ b/components/script/dom/htmlsourceelement.rs
@@ -36,7 +36,7 @@ impl HTMLSourceElement {
         }
     }
 
-    #[allow(unrooted_must_root)]
+    #[allow(crown::unrooted_must_root)]
     pub fn new(
         local_name: LocalName,
         prefix: Option<Prefix>,
diff --git a/components/script/dom/htmlspanelement.rs b/components/script/dom/htmlspanelement.rs
index 1d323a65556..0f1617fc5bf 100644
--- a/components/script/dom/htmlspanelement.rs
+++ b/components/script/dom/htmlspanelement.rs
@@ -27,7 +27,7 @@ impl HTMLSpanElement {
         }
     }
 
-    #[allow(unrooted_must_root)]
+    #[allow(crown::unrooted_must_root)]
     pub fn new(
         local_name: LocalName,
         prefix: Option<Prefix>,
diff --git a/components/script/dom/htmlstyleelement.rs b/components/script/dom/htmlstyleelement.rs
index ebe0760560b..6d8a4f8769d 100644
--- a/components/script/dom/htmlstyleelement.rs
+++ b/components/script/dom/htmlstyleelement.rs
@@ -66,7 +66,7 @@ impl HTMLStyleElement {
         }
     }
 
-    #[allow(unrooted_must_root)]
+    #[allow(crown::unrooted_must_root)]
     pub fn new(
         local_name: LocalName,
         prefix: Option<Prefix>,
@@ -145,7 +145,7 @@ impl HTMLStyleElement {
     }
 
     // FIXME(emilio): This is duplicated with HTMLLinkElement::set_stylesheet.
-    #[allow(unrooted_must_root)]
+    #[allow(crown::unrooted_must_root)]
     pub fn set_stylesheet(&self, s: Arc<Stylesheet>) {
         let stylesheets_owner = stylesheets_owner_from_node(self);
         if let Some(ref s) = *self.stylesheet.borrow() {
diff --git a/components/script/dom/htmltablecaptionelement.rs b/components/script/dom/htmltablecaptionelement.rs
index c856c53c18a..959adb4d365 100644
--- a/components/script/dom/htmltablecaptionelement.rs
+++ b/components/script/dom/htmltablecaptionelement.rs
@@ -28,7 +28,7 @@ impl HTMLTableCaptionElement {
         }
     }
 
-    #[allow(unrooted_must_root)]
+    #[allow(crown::unrooted_must_root)]
     pub fn new(
         local_name: LocalName,
         prefix: Option<Prefix>,
diff --git a/components/script/dom/htmltablecellelement.rs b/components/script/dom/htmltablecellelement.rs
index a6ab78177dc..4f55fbd4ea7 100644
--- a/components/script/dom/htmltablecellelement.rs
+++ b/components/script/dom/htmltablecellelement.rs
@@ -40,7 +40,7 @@ impl HTMLTableCellElement {
         }
     }
 
-    #[allow(unrooted_must_root)]
+    #[allow(crown::unrooted_must_root)]
     pub fn new(
         local_name: LocalName,
         prefix: Option<Prefix>,
diff --git a/components/script/dom/htmltablecolelement.rs b/components/script/dom/htmltablecolelement.rs
index d2b9e1f9421..3829f595341 100644
--- a/components/script/dom/htmltablecolelement.rs
+++ b/components/script/dom/htmltablecolelement.rs
@@ -28,7 +28,7 @@ impl HTMLTableColElement {
         }
     }
 
-    #[allow(unrooted_must_root)]
+    #[allow(crown::unrooted_must_root)]
     pub fn new(
         local_name: LocalName,
         prefix: Option<Prefix>,
diff --git a/components/script/dom/htmltableelement.rs b/components/script/dom/htmltableelement.rs
index 25c75e1820f..2bddc484499 100644
--- a/components/script/dom/htmltableelement.rs
+++ b/components/script/dom/htmltableelement.rs
@@ -37,7 +37,7 @@ pub struct HTMLTableElement {
     tbodies: MutNullableDom<HTMLCollection>,
 }
 
-#[allow(unrooted_must_root)]
+#[allow(crown::unrooted_must_root)]
 #[derive(JSTraceable, MallocSizeOf)]
 struct TableRowFilter {
     sections: Vec<Dom<Node>>,
@@ -67,7 +67,7 @@ impl HTMLTableElement {
         }
     }
 
-    #[allow(unrooted_must_root)]
+    #[allow(crown::unrooted_must_root)]
     pub fn new(
         local_name: LocalName,
         prefix: Option<Prefix>,
diff --git a/components/script/dom/htmltablerowelement.rs b/components/script/dom/htmltablerowelement.rs
index 79f154c4256..a5fe4e2fec6 100644
--- a/components/script/dom/htmltablerowelement.rs
+++ b/components/script/dom/htmltablerowelement.rs
@@ -53,7 +53,7 @@ impl HTMLTableRowElement {
         }
     }
 
-    #[allow(unrooted_must_root)]
+    #[allow(crown::unrooted_must_root)]
     pub fn new(
         local_name: LocalName,
         prefix: Option<Prefix>,
diff --git a/components/script/dom/htmltablesectionelement.rs b/components/script/dom/htmltablesectionelement.rs
index 24a85fb1b1a..9daf6393154 100644
--- a/components/script/dom/htmltablesectionelement.rs
+++ b/components/script/dom/htmltablesectionelement.rs
@@ -38,7 +38,7 @@ impl HTMLTableSectionElement {
         }
     }
 
-    #[allow(unrooted_must_root)]
+    #[allow(crown::unrooted_must_root)]
     pub fn new(
         local_name: LocalName,
         prefix: Option<Prefix>,
diff --git a/components/script/dom/htmltemplateelement.rs b/components/script/dom/htmltemplateelement.rs
index 4938c25a14d..fcfd06ad74d 100644
--- a/components/script/dom/htmltemplateelement.rs
+++ b/components/script/dom/htmltemplateelement.rs
@@ -37,7 +37,7 @@ impl HTMLTemplateElement {
         }
     }
 
-    #[allow(unrooted_must_root)]
+    #[allow(crown::unrooted_must_root)]
     pub fn new(
         local_name: LocalName,
         prefix: Option<Prefix>,
diff --git a/components/script/dom/htmltextareaelement.rs b/components/script/dom/htmltextareaelement.rs
index ca77d6cefad..52531847665 100755
--- a/components/script/dom/htmltextareaelement.rs
+++ b/components/script/dom/htmltextareaelement.rs
@@ -172,7 +172,7 @@ impl HTMLTextAreaElement {
         }
     }
 
-    #[allow(unrooted_must_root)]
+    #[allow(crown::unrooted_must_root)]
     pub fn new(
         local_name: LocalName,
         prefix: Option<Prefix>,
@@ -454,7 +454,7 @@ impl HTMLTextAreaElement {
         self.value_dirty.set(false);
     }
 
-    #[allow(unrooted_must_root)]
+    #[allow(crown::unrooted_must_root)]
     fn selection(&self) -> TextControlSelection<Self> {
         TextControlSelection::new(&self, &self.textinput)
     }
diff --git a/components/script/dom/htmltimeelement.rs b/components/script/dom/htmltimeelement.rs
index 4af4acfc888..40b1c685ebb 100644
--- a/components/script/dom/htmltimeelement.rs
+++ b/components/script/dom/htmltimeelement.rs
@@ -29,7 +29,7 @@ impl HTMLTimeElement {
         }
     }
 
-    #[allow(unrooted_must_root)]
+    #[allow(crown::unrooted_must_root)]
     pub fn new(
         local_name: LocalName,
         prefix: Option<Prefix>,
diff --git a/components/script/dom/htmltitleelement.rs b/components/script/dom/htmltitleelement.rs
index 24572c0f7e1..2c308c6c77a 100644
--- a/components/script/dom/htmltitleelement.rs
+++ b/components/script/dom/htmltitleelement.rs
@@ -32,7 +32,7 @@ impl HTMLTitleElement {
         }
     }
 
-    #[allow(unrooted_must_root)]
+    #[allow(crown::unrooted_must_root)]
     pub fn new(
         local_name: LocalName,
         prefix: Option<Prefix>,
diff --git a/components/script/dom/htmlulistelement.rs b/components/script/dom/htmlulistelement.rs
index f0820c0f3ae..faa1eb97d59 100644
--- a/components/script/dom/htmlulistelement.rs
+++ b/components/script/dom/htmlulistelement.rs
@@ -27,7 +27,7 @@ impl HTMLUListElement {
         }
     }
 
-    #[allow(unrooted_must_root)]
+    #[allow(crown::unrooted_must_root)]
     pub fn new(
         local_name: LocalName,
         prefix: Option<Prefix>,
diff --git a/components/script/dom/htmlunknownelement.rs b/components/script/dom/htmlunknownelement.rs
index c87c104d66b..70d77feeabe 100644
--- a/components/script/dom/htmlunknownelement.rs
+++ b/components/script/dom/htmlunknownelement.rs
@@ -27,7 +27,7 @@ impl HTMLUnknownElement {
         }
     }
 
-    #[allow(unrooted_must_root)]
+    #[allow(crown::unrooted_must_root)]
     pub fn new(
         local_name: LocalName,
         prefix: Option<Prefix>,
diff --git a/components/script/dom/htmlvideoelement.rs b/components/script/dom/htmlvideoelement.rs
index 39bfabfb6d0..9149acedede 100644
--- a/components/script/dom/htmlvideoelement.rs
+++ b/components/script/dom/htmlvideoelement.rs
@@ -83,7 +83,7 @@ impl HTMLVideoElement {
         }
     }
 
-    #[allow(unrooted_must_root)]
+    #[allow(crown::unrooted_must_root)]
     pub fn new(
         local_name: LocalName,
         prefix: Option<Prefix>,
diff --git a/components/script/dom/macros.rs b/components/script/dom/macros.rs
index 4b32a54d6aa..e9b48731280 100644
--- a/components/script/dom/macros.rs
+++ b/components/script/dom/macros.rs
@@ -597,7 +597,7 @@ macro_rules! impl_performance_entry_struct(
                 }
             }
 
-            #[allow(unrooted_must_root)]
+            #[allow(crown::unrooted_must_root)]
             pub fn new(global: &GlobalScope,
                        name: DOMString,
                        start_time: f64,
diff --git a/components/script/dom/mediaelementaudiosourcenode.rs b/components/script/dom/mediaelementaudiosourcenode.rs
index 4efc43e0418..bb874f0f482 100644
--- a/components/script/dom/mediaelementaudiosourcenode.rs
+++ b/components/script/dom/mediaelementaudiosourcenode.rs
@@ -27,7 +27,7 @@ pub struct MediaElementAudioSourceNode {
 }
 
 impl MediaElementAudioSourceNode {
-    #[allow(unrooted_must_root)]
+    #[allow(crown::unrooted_must_root)]
     fn new_inherited(
         context: &AudioContext,
         media_element: &HTMLMediaElement,
@@ -60,7 +60,7 @@ impl MediaElementAudioSourceNode {
         Self::new_with_proto(window, None, context, media_element)
     }
 
-    #[allow(unrooted_must_root)]
+    #[allow(crown::unrooted_must_root)]
     fn new_with_proto(
         window: &Window,
         proto: Option<HandleObject>,
diff --git a/components/script/dom/medialist.rs b/components/script/dom/medialist.rs
index f099c327f65..4874e044bca 100644
--- a/components/script/dom/medialist.rs
+++ b/components/script/dom/medialist.rs
@@ -29,7 +29,7 @@ pub struct MediaList {
 }
 
 impl MediaList {
-    #[allow(unrooted_must_root)]
+    #[allow(crown::unrooted_must_root)]
     pub fn new_inherited(
         parent_stylesheet: &CSSStyleSheet,
         media_queries: Arc<Locked<StyleMediaList>>,
@@ -41,7 +41,7 @@ impl MediaList {
         }
     }
 
-    #[allow(unrooted_must_root)]
+    #[allow(crown::unrooted_must_root)]
     pub fn new(
         window: &Window,
         parent_stylesheet: &CSSStyleSheet,
diff --git a/components/script/dom/mediasession.rs b/components/script/dom/mediasession.rs
index 14ca4c14494..b1907c4678c 100644
--- a/components/script/dom/mediasession.rs
+++ b/components/script/dom/mediasession.rs
@@ -48,7 +48,7 @@ pub struct MediaSession {
 }
 
 impl MediaSession {
-    #[allow(unrooted_must_root)]
+    #[allow(crown::unrooted_must_root)]
     fn new_inherited() -> MediaSession {
         let media_session = MediaSession {
             reflector_: Reflector::new(),
diff --git a/components/script/dom/mediastreamaudiodestinationnode.rs b/components/script/dom/mediastreamaudiodestinationnode.rs
index 7409cfa98e2..1950ce34a26 100644
--- a/components/script/dom/mediastreamaudiodestinationnode.rs
+++ b/components/script/dom/mediastreamaudiodestinationnode.rs
@@ -28,7 +28,7 @@ pub struct MediaStreamAudioDestinationNode {
 }
 
 impl MediaStreamAudioDestinationNode {
-    #[allow(unrooted_must_root)]
+    #[allow(crown::unrooted_must_root)]
     pub fn new_inherited(
         context: &AudioContext,
         options: &AudioNodeOptions,
@@ -62,7 +62,7 @@ impl MediaStreamAudioDestinationNode {
         Self::new_with_proto(window, None, context, options)
     }
 
-    #[allow(unrooted_must_root)]
+    #[allow(crown::unrooted_must_root)]
     fn new_with_proto(
         window: &Window,
         proto: Option<HandleObject>,
diff --git a/components/script/dom/mediastreamaudiosourcenode.rs b/components/script/dom/mediastreamaudiosourcenode.rs
index c56851912db..4f273f960b2 100644
--- a/components/script/dom/mediastreamaudiosourcenode.rs
+++ b/components/script/dom/mediastreamaudiosourcenode.rs
@@ -26,7 +26,7 @@ pub struct MediaStreamAudioSourceNode {
 }
 
 impl MediaStreamAudioSourceNode {
-    #[allow(unrooted_must_root)]
+    #[allow(crown::unrooted_must_root)]
     pub fn new_inherited(
         context: &AudioContext,
         stream: &MediaStream,
@@ -58,7 +58,7 @@ impl MediaStreamAudioSourceNode {
         Self::new_with_proto(window, None, context, stream)
     }
 
-    #[allow(unrooted_must_root)]
+    #[allow(crown::unrooted_must_root)]
     fn new_with_proto(
         window: &Window,
         proto: Option<HandleObject>,
diff --git a/components/script/dom/mediastreamtrackaudiosourcenode.rs b/components/script/dom/mediastreamtrackaudiosourcenode.rs
index fa8b480764d..c5d8c18cb2c 100644
--- a/components/script/dom/mediastreamtrackaudiosourcenode.rs
+++ b/components/script/dom/mediastreamtrackaudiosourcenode.rs
@@ -23,7 +23,7 @@ pub struct MediaStreamTrackAudioSourceNode {
 }
 
 impl MediaStreamTrackAudioSourceNode {
-    #[allow(unrooted_must_root)]
+    #[allow(crown::unrooted_must_root)]
     pub fn new_inherited(
         context: &AudioContext,
         track: &MediaStreamTrack,
@@ -49,7 +49,7 @@ impl MediaStreamTrackAudioSourceNode {
         Self::new_with_proto(window, None, context, track)
     }
 
-    #[allow(unrooted_must_root)]
+    #[allow(crown::unrooted_must_root)]
     fn new_with_proto(
         window: &Window,
         proto: Option<HandleObject>,
diff --git a/components/script/dom/messageevent.rs b/components/script/dom/messageevent.rs
index d398f67a309..690fe5b09a6 100644
--- a/components/script/dom/messageevent.rs
+++ b/components/script/dom/messageevent.rs
@@ -28,7 +28,7 @@ use crate::dom::serviceworker::ServiceWorker;
 use crate::dom::windowproxy::WindowProxy;
 use crate::script_runtime::JSContext;
 
-#[unrooted_must_root_lint::must_root]
+#[crown::unrooted_must_root_lint::must_root]
 #[derive(JSTraceable, MallocSizeOf)]
 enum SrcObject {
     WindowProxy(Dom<WindowProxy>),
@@ -37,7 +37,7 @@ enum SrcObject {
 }
 
 impl From<&WindowProxyOrMessagePortOrServiceWorker> for SrcObject {
-    #[allow(unrooted_must_root)]
+    #[allow(crown::unrooted_must_root)]
     fn from(src_object: &WindowProxyOrMessagePortOrServiceWorker) -> SrcObject {
         match src_object {
             WindowProxyOrMessagePortOrServiceWorker::WindowProxy(blob) => {
diff --git a/components/script/dom/mutationrecord.rs b/components/script/dom/mutationrecord.rs
index ad9638e6b30..c029baee036 100644
--- a/components/script/dom/mutationrecord.rs
+++ b/components/script/dom/mutationrecord.rs
@@ -27,7 +27,7 @@ pub struct MutationRecord {
 }
 
 impl MutationRecord {
-    #[allow(unrooted_must_root)]
+    #[allow(crown::unrooted_must_root)]
     pub fn attribute_mutated(
         target: &Node,
         attribute_name: &LocalName,
diff --git a/components/script/dom/navigationpreloadmanager.rs b/components/script/dom/navigationpreloadmanager.rs
index 011ad438f5c..7aa200b4306 100644
--- a/components/script/dom/navigationpreloadmanager.rs
+++ b/components/script/dom/navigationpreloadmanager.rs
@@ -33,7 +33,7 @@ impl NavigationPreloadManager {
         }
     }
 
-    #[allow(unrooted_must_root)]
+    #[allow(crown::unrooted_must_root)]
     pub fn new(
         global: &GlobalScope,
         registration: &ServiceWorkerRegistration,
diff --git a/components/script/dom/node.rs b/components/script/dom/node.rs
index 2470e890939..b2c95c5f92a 100644
--- a/components/script/dom/node.rs
+++ b/components/script/dom/node.rs
@@ -1786,7 +1786,7 @@ impl Node {
         Node::new_(NodeFlags::new(), Some(doc))
     }
 
-    #[allow(unrooted_must_root)]
+    #[allow(crown::unrooted_must_root)]
     pub fn new_document_node() -> Node {
         Node::new_(
             NodeFlags::new() | NodeFlags::IS_IN_DOC | NodeFlags::IS_CONNECTED,
@@ -1794,7 +1794,7 @@ impl Node {
         )
     }
 
-    #[allow(unrooted_must_root)]
+    #[allow(crown::unrooted_must_root)]
     fn new_(flags: NodeFlags, doc: Option<&Document>) -> Node {
         Node {
             eventtarget: EventTarget::new_inherited(),
@@ -3150,7 +3150,7 @@ pub fn containing_shadow_root<T: DerivedFrom<Node> + DomObject>(
     derived.upcast().containing_shadow_root()
 }
 
-#[allow(unrooted_must_root)]
+#[allow(crown::unrooted_must_root)]
 pub fn stylesheets_owner_from_node<T: DerivedFrom<Node> + DomObject>(
     derived: &T,
 ) -> StyleSheetListOwner {
diff --git a/components/script/dom/nodelist.rs b/components/script/dom/nodelist.rs
index 64140f98222..695a7a9f336 100644
--- a/components/script/dom/nodelist.rs
+++ b/components/script/dom/nodelist.rs
@@ -19,7 +19,7 @@ use crate::dom::node::{ChildrenMutation, Node};
 use crate::dom::window::Window;
 
 #[derive(JSTraceable, MallocSizeOf)]
-#[unrooted_must_root_lint::must_root]
+#[crown::unrooted_must_root_lint::must_root]
 pub enum NodeListType {
     Simple(Vec<Dom<Node>>),
     Children(ChildrenList),
@@ -36,7 +36,7 @@ pub struct NodeList {
 }
 
 impl NodeList {
-    #[allow(unrooted_must_root)]
+    #[allow(crown::unrooted_must_root)]
     pub fn new_inherited(list_type: NodeListType) -> NodeList {
         NodeList {
             reflector_: Reflector::new(),
@@ -44,7 +44,7 @@ impl NodeList {
         }
     }
 
-    #[allow(unrooted_must_root)]
+    #[allow(crown::unrooted_must_root)]
     pub fn new(window: &Window, list_type: NodeListType) -> DomRoot<NodeList> {
         reflect_dom_object(Box::new(NodeList::new_inherited(list_type)), window)
     }
@@ -147,7 +147,7 @@ impl NodeList {
 }
 
 #[derive(JSTraceable, MallocSizeOf)]
-#[unrooted_must_root_lint::must_root]
+#[crown::unrooted_must_root_lint::must_root]
 pub struct ChildrenList {
     node: Dom<Node>,
     #[ignore_malloc_size_of = "Defined in rust-mozjs"]
@@ -357,7 +357,7 @@ impl ChildrenList {
 // and it's possible that tracking label moves would end up no faster
 // than recalculating labels.
 #[derive(JSTraceable, MallocSizeOf)]
-#[unrooted_must_root_lint::must_root]
+#[crown::unrooted_must_root_lint::must_root]
 pub struct LabelsList {
     element: Dom<HTMLElement>,
 }
@@ -390,7 +390,7 @@ pub enum RadioListMode {
 }
 
 #[derive(JSTraceable, MallocSizeOf)]
-#[unrooted_must_root_lint::must_root]
+#[crown::unrooted_must_root_lint::must_root]
 pub struct RadioList {
     form: Dom<HTMLFormElement>,
     mode: RadioListMode,
@@ -417,7 +417,7 @@ impl RadioList {
 }
 
 #[derive(JSTraceable, MallocSizeOf)]
-#[unrooted_must_root_lint::must_root]
+#[crown::unrooted_must_root_lint::must_root]
 pub struct ElementsByNameList {
     document: Dom<Document>,
     name: DOMString,
diff --git a/components/script/dom/offlineaudiocontext.rs b/components/script/dom/offlineaudiocontext.rs
index c89cf82c5e7..b803a65dc8b 100644
--- a/components/script/dom/offlineaudiocontext.rs
+++ b/components/script/dom/offlineaudiocontext.rs
@@ -45,7 +45,7 @@ pub struct OfflineAudioContext {
 
 #[allow(non_snake_case)]
 impl OfflineAudioContext {
-    #[allow(unrooted_must_root)]
+    #[allow(crown::unrooted_must_root)]
     fn new_inherited(
         channel_count: u32,
         length: u32,
@@ -70,7 +70,7 @@ impl OfflineAudioContext {
         }
     }
 
-    #[allow(unrooted_must_root)]
+    #[allow(crown::unrooted_must_root)]
     fn new(
         window: &Window,
         proto: Option<HandleObject>,
diff --git a/components/script/dom/offscreencanvas.rs b/components/script/dom/offscreencanvas.rs
index 9f1ce7333b6..9a364b3391f 100644
--- a/components/script/dom/offscreencanvas.rs
+++ b/components/script/dom/offscreencanvas.rs
@@ -25,7 +25,7 @@ use crate::dom::htmlcanvaselement::HTMLCanvasElement;
 use crate::dom::offscreencanvasrenderingcontext2d::OffscreenCanvasRenderingContext2D;
 use crate::script_runtime::JSContext;
 
-#[unrooted_must_root_lint::must_root]
+#[crown::unrooted_must_root_lint::must_root]
 #[derive(Clone, JSTraceable, MallocSizeOf)]
 pub enum OffscreenCanvasContext {
     OffscreenContext2d(Dom<OffscreenCanvasRenderingContext2D>),
diff --git a/components/script/dom/offscreencanvasrenderingcontext2d.rs b/components/script/dom/offscreencanvasrenderingcontext2d.rs
index adf38225c98..97648281afb 100644
--- a/components/script/dom/offscreencanvasrenderingcontext2d.rs
+++ b/components/script/dom/offscreencanvasrenderingcontext2d.rs
@@ -207,7 +207,7 @@ impl OffscreenCanvasRenderingContext2DMethods for OffscreenCanvasRenderingContex
         self.canvas_state.save()
     }
 
-    #[allow(unrooted_must_root)]
+    #[allow(crown::unrooted_must_root)]
     // https://html.spec.whatwg.org/multipage/#dom-context-2d-restore
     fn Restore(&self) {
         self.canvas_state.restore()
diff --git a/components/script/dom/oscillatornode.rs b/components/script/dom/oscillatornode.rs
index 15d6c875b1d..6037cc779bd 100644
--- a/components/script/dom/oscillatornode.rs
+++ b/components/script/dom/oscillatornode.rs
@@ -38,7 +38,7 @@ pub struct OscillatorNode {
 }
 
 impl OscillatorNode {
-    #[allow(unrooted_must_root)]
+    #[allow(crown::unrooted_must_root)]
     pub fn new_inherited(
         window: &Window,
         context: &BaseAudioContext,
@@ -92,7 +92,7 @@ impl OscillatorNode {
         Self::new_with_proto(window, None, context, options)
     }
 
-    #[allow(unrooted_must_root)]
+    #[allow(crown::unrooted_must_root)]
     fn new_with_proto(
         window: &Window,
         proto: Option<HandleObject>,
diff --git a/components/script/dom/paintworkletglobalscope.rs b/components/script/dom/paintworkletglobalscope.rs
index bfd67470b19..c93abc04711 100644
--- a/components/script/dom/paintworkletglobalscope.rs
+++ b/components/script/dom/paintworkletglobalscope.rs
@@ -463,7 +463,7 @@ pub enum PaintWorkletTask {
 /// This type is dangerous, because it contains uboxed `Heap<JSVal>` values,
 /// which can't be moved.
 #[derive(JSTraceable, MallocSizeOf)]
-#[unrooted_must_root_lint::must_root]
+#[crown::unrooted_must_root_lint::must_root]
 struct PaintDefinition {
     #[ignore_malloc_size_of = "mozjs"]
     class_constructor: Heap<JSVal>,
@@ -503,7 +503,7 @@ impl PaintDefinition {
 
 impl PaintWorkletGlobalScopeMethods for PaintWorkletGlobalScope {
     #[allow(unsafe_code)]
-    #[allow(unrooted_must_root)]
+    #[allow(crown::unrooted_must_root)]
     /// <https://drafts.css-houdini.org/css-paint-api/#dom-paintworkletglobalscope-registerpaint>
     fn RegisterPaint(&self, name: DOMString, paint_ctor: Rc<VoidFunction>) -> Fallible<()> {
         let name = Atom::from(name);
diff --git a/components/script/dom/pannernode.rs b/components/script/dom/pannernode.rs
index 3a617e50e70..4517bd1cf31 100644
--- a/components/script/dom/pannernode.rs
+++ b/components/script/dom/pannernode.rs
@@ -56,7 +56,7 @@ pub struct PannerNode {
 }
 
 impl PannerNode {
-    #[allow(unrooted_must_root)]
+    #[allow(crown::unrooted_must_root)]
     pub fn new_inherited(
         window: &Window,
         context: &BaseAudioContext,
@@ -181,7 +181,7 @@ impl PannerNode {
         Self::new_with_proto(window, None, context, options)
     }
 
-    #[allow(unrooted_must_root)]
+    #[allow(crown::unrooted_must_root)]
     fn new_with_proto(
         window: &Window,
         proto: Option<HandleObject>,
diff --git a/components/script/dom/performanceentry.rs b/components/script/dom/performanceentry.rs
index 326cc7f4311..2056a8daf99 100644
--- a/components/script/dom/performanceentry.rs
+++ b/components/script/dom/performanceentry.rs
@@ -37,7 +37,7 @@ impl PerformanceEntry {
         }
     }
 
-    #[allow(unrooted_must_root)]
+    #[allow(crown::unrooted_must_root)]
     pub fn new(
         global: &GlobalScope,
         name: DOMString,
diff --git a/components/script/dom/performanceobserver.rs b/components/script/dom/performanceobserver.rs
index 067dd19a32a..cda2248f3e8 100644
--- a/components/script/dom/performanceobserver.rs
+++ b/components/script/dom/performanceobserver.rs
@@ -74,7 +74,7 @@ impl PerformanceObserver {
         Self::new_with_proto(global, None, callback, entries)
     }
 
-    #[allow(unrooted_must_root)]
+    #[allow(crown::unrooted_must_root)]
     fn new_with_proto(
         global: &GlobalScope,
         proto: Option<HandleObject>,
diff --git a/components/script/dom/performanceobserverentrylist.rs b/components/script/dom/performanceobserverentrylist.rs
index 913592b5ed4..12a38d0515a 100644
--- a/components/script/dom/performanceobserverentrylist.rs
+++ b/components/script/dom/performanceobserverentrylist.rs
@@ -27,7 +27,7 @@ impl PerformanceObserverEntryList {
         }
     }
 
-    #[allow(unrooted_must_root)]
+    #[allow(crown::unrooted_must_root)]
     pub fn new(
         global: &GlobalScope,
         entries: PerformanceEntryList,
diff --git a/components/script/dom/performancepainttiming.rs b/components/script/dom/performancepainttiming.rs
index a18a962b952..69fa440d744 100644
--- a/components/script/dom/performancepainttiming.rs
+++ b/components/script/dom/performancepainttiming.rs
@@ -39,7 +39,7 @@ impl PerformancePaintTiming {
         }
     }
 
-    #[allow(unrooted_must_root)]
+    #[allow(crown::unrooted_must_root)]
     pub fn new(
         global: &GlobalScope,
         metric_type: ProgressiveWebMetricType,
diff --git a/components/script/dom/performanceresourcetiming.rs b/components/script/dom/performanceresourcetiming.rs
index 4146528f185..be1773aa9ca 100644
--- a/components/script/dom/performanceresourcetiming.rs
+++ b/components/script/dom/performanceresourcetiming.rs
@@ -101,7 +101,7 @@ impl PerformanceResourceTiming {
     }
 
     //TODO fetch start should be in RFT
-    #[allow(unrooted_must_root)]
+    #[allow(crown::unrooted_must_root)]
     fn from_resource_timing(
         url: ServoUrl,
         initiator_type: InitiatorType,
diff --git a/components/script/dom/performancetiming.rs b/components/script/dom/performancetiming.rs
index 9f8a3a8b5f2..b3c2ee426d8 100644
--- a/components/script/dom/performancetiming.rs
+++ b/components/script/dom/performancetiming.rs
@@ -33,7 +33,7 @@ impl PerformanceTiming {
         }
     }
 
-    #[allow(unrooted_must_root)]
+    #[allow(crown::unrooted_must_root)]
     pub fn new(
         window: &Window,
         navigation_start: u64,
diff --git a/components/script/dom/promise.rs b/components/script/dom/promise.rs
index ce84609f79a..b0274ebeb2a 100644
--- a/components/script/dom/promise.rs
+++ b/components/script/dom/promise.rs
@@ -42,7 +42,7 @@ use crate::script_runtime::JSContext as SafeJSContext;
 use crate::script_thread::ScriptThread;
 
 #[dom_struct]
-#[unrooted_must_root_lint::allow_unrooted_in_rc]
+#[crown::unrooted_must_root_lint::allow_unrooted_in_rc]
 pub struct Promise {
     reflector: Reflector,
     /// Since Promise values are natively reference counted without the knowledge of
@@ -106,7 +106,7 @@ impl Promise {
         Promise::new_with_js_promise(self.reflector().get_jsobject(), cx)
     }
 
-    #[allow(unsafe_code, unrooted_must_root)]
+    #[allow(unsafe_code, crown::unrooted_must_root)]
     pub fn new_with_js_promise(obj: HandleObject, cx: SafeJSContext) -> Rc<Promise> {
         unsafe {
             assert!(IsPromiseObject(obj));
@@ -145,7 +145,7 @@ impl Promise {
         }
     }
 
-    #[allow(unrooted_must_root, unsafe_code)]
+    #[allow(crown::unrooted_must_root, unsafe_code)]
     pub fn new_resolved(
         global: &GlobalScope,
         cx: SafeJSContext,
@@ -157,7 +157,7 @@ impl Promise {
         Ok(Promise::new_with_js_promise(p.handle(), cx))
     }
 
-    #[allow(unrooted_must_root, unsafe_code)]
+    #[allow(crown::unrooted_must_root, unsafe_code)]
     pub fn new_rejected(
         global: &GlobalScope,
         cx: SafeJSContext,
@@ -183,7 +183,7 @@ impl Promise {
         self.resolve(cx, v.handle());
     }
 
-    #[allow(unrooted_must_root, unsafe_code)]
+    #[allow(crown::unrooted_must_root, unsafe_code)]
     pub fn resolve(&self, cx: SafeJSContext, value: HandleValue) {
         unsafe {
             if !ResolvePromise(*cx, self.promise_obj(), value) {
@@ -217,7 +217,7 @@ impl Promise {
         self.reject(cx, v.handle());
     }
 
-    #[allow(unrooted_must_root, unsafe_code)]
+    #[allow(crown::unrooted_must_root, unsafe_code)]
     pub fn reject(&self, cx: SafeJSContext, value: HandleValue) {
         unsafe {
             if !RejectPromise(*cx, self.promise_obj(), value) {
diff --git a/components/script/dom/promiserejectionevent.rs b/components/script/dom/promiserejectionevent.rs
index 334ed691b0a..64e548493f2 100644
--- a/components/script/dom/promiserejectionevent.rs
+++ b/components/script/dom/promiserejectionevent.rs
@@ -34,7 +34,7 @@ pub struct PromiseRejectionEvent {
 }
 
 impl PromiseRejectionEvent {
-    #[allow(unrooted_must_root)]
+    #[allow(crown::unrooted_must_root)]
     fn new_inherited(promise: Rc<Promise>) -> Self {
         PromiseRejectionEvent {
             event: Event::new_inherited(),
@@ -54,7 +54,7 @@ impl PromiseRejectionEvent {
         Self::new_with_proto(global, None, type_, bubbles, cancelable, promise, reason)
     }
 
-    #[allow(unrooted_must_root)]
+    #[allow(crown::unrooted_must_root)]
     fn new_with_proto(
         global: &GlobalScope,
         proto: Option<HandleObject>,
@@ -79,7 +79,7 @@ impl PromiseRejectionEvent {
         ev
     }
 
-    #[allow(unrooted_must_root, non_snake_case)]
+    #[allow(crown::unrooted_must_root, non_snake_case)]
     pub fn Constructor(
         global: &GlobalScope,
         proto: Option<HandleObject>,
diff --git a/components/script/dom/radionodelist.rs b/components/script/dom/radionodelist.rs
index 9ada855850a..e5257d8a770 100644
--- a/components/script/dom/radionodelist.rs
+++ b/components/script/dom/radionodelist.rs
@@ -24,14 +24,14 @@ pub struct RadioNodeList {
 }
 
 impl RadioNodeList {
-    #[allow(unrooted_must_root)]
+    #[allow(crown::unrooted_must_root)]
     fn new_inherited(list_type: NodeListType) -> RadioNodeList {
         RadioNodeList {
             node_list: NodeList::new_inherited(list_type),
         }
     }
 
-    #[allow(unrooted_must_root)]
+    #[allow(crown::unrooted_must_root)]
     pub fn new(window: &Window, list_type: NodeListType) -> DomRoot<RadioNodeList> {
         reflect_dom_object(Box::new(RadioNodeList::new_inherited(list_type)), window)
     }
diff --git a/components/script/dom/range.rs b/components/script/dom/range.rs
index 9e25ab29016..7172e2c501e 100644
--- a/components/script/dom/range.rs
+++ b/components/script/dom/range.rs
@@ -1064,7 +1064,7 @@ impl RangeMethods for Range {
 }
 
 #[derive(DenyPublicFields, JSTraceable, MallocSizeOf)]
-#[unrooted_must_root_lint::must_root]
+#[crown::unrooted_must_root_lint::must_root]
 pub struct BoundaryPoint {
     node: MutDom<Node>,
     offset: Cell<u32>,
@@ -1090,7 +1090,7 @@ impl BoundaryPoint {
     }
 }
 
-#[allow(unrooted_must_root)]
+#[allow(crown::unrooted_must_root)]
 impl PartialOrd for BoundaryPoint {
     fn partial_cmp(&self, other: &Self) -> Option<Ordering> {
         bp_position(
@@ -1102,7 +1102,7 @@ impl PartialOrd for BoundaryPoint {
     }
 }
 
-#[allow(unrooted_must_root)]
+#[allow(crown::unrooted_must_root)]
 impl PartialEq for BoundaryPoint {
     fn eq(&self, other: &Self) -> bool {
         self.node.get() == other.node.get() && self.offset.get() == other.offset.get()
diff --git a/components/script/dom/raredata.rs b/components/script/dom/raredata.rs
index 54f46250530..1354637d7ae 100644
--- a/components/script/dom/raredata.rs
+++ b/components/script/dom/raredata.rs
@@ -20,7 +20,7 @@ use crate::dom::window::LayoutValue;
 //           storage.
 
 #[derive(Default, JSTraceable, MallocSizeOf)]
-#[unrooted_must_root_lint::must_root]
+#[crown::unrooted_must_root_lint::must_root]
 pub struct NodeRareData {
     /// The shadow root the node belongs to.
     /// This is None if the node is not in a shadow tree or
@@ -33,7 +33,7 @@ pub struct NodeRareData {
 }
 
 #[derive(Default, JSTraceable, MallocSizeOf)]
-#[unrooted_must_root_lint::must_root]
+#[crown::unrooted_must_root_lint::must_root]
 pub struct ElementRareData {
     /// https://dom.spec.whatwg.org/#dom-element-shadowroot
     /// The ShadowRoot this element is host of.
diff --git a/components/script/dom/response.rs b/components/script/dom/response.rs
index 068729c9509..0d43077495a 100644
--- a/components/script/dom/response.rs
+++ b/components/script/dom/response.rs
@@ -455,7 +455,7 @@ impl Response {
         }
     }
 
-    #[allow(unrooted_must_root)]
+    #[allow(crown::unrooted_must_root)]
     pub fn finish(&self) {
         if let Some(body) = self.body_stream.get() {
             body.close_native();
diff --git a/components/script/dom/rtcdatachannel.rs b/components/script/dom/rtcdatachannel.rs
index 50be50a573b..57fb1eba868 100644
--- a/components/script/dom/rtcdatachannel.rs
+++ b/components/script/dom/rtcdatachannel.rs
@@ -53,7 +53,7 @@ pub struct RTCDataChannel {
 }
 
 impl RTCDataChannel {
-    #[allow(unrooted_must_root)]
+    #[allow(crown::unrooted_must_root)]
     pub fn new_inherited(
         peer_connection: &RTCPeerConnection,
         label: USVString,
diff --git a/components/script/dom/rtctrackevent.rs b/components/script/dom/rtctrackevent.rs
index b055cb5bc4a..c6a5aefd67e 100644
--- a/components/script/dom/rtctrackevent.rs
+++ b/components/script/dom/rtctrackevent.rs
@@ -25,7 +25,7 @@ pub struct RTCTrackEvent {
 }
 
 impl RTCTrackEvent {
-    #[allow(unrooted_must_root)]
+    #[allow(crown::unrooted_must_root)]
     fn new_inherited(track: &MediaStreamTrack) -> RTCTrackEvent {
         RTCTrackEvent {
             event: Event::new_inherited(),
diff --git a/components/script/dom/serviceworker.rs b/components/script/dom/serviceworker.rs
index 021192a95fa..7e456265e95 100644
--- a/components/script/dom/serviceworker.rs
+++ b/components/script/dom/serviceworker.rs
@@ -165,7 +165,7 @@ impl ServiceWorkerMethods for ServiceWorker {
 }
 
 impl TaskOnce for SimpleWorkerErrorHandler<ServiceWorker> {
-    #[allow(unrooted_must_root)]
+    #[allow(crown::unrooted_must_root)]
     fn run_once(self) {
         ServiceWorker::dispatch_simple_error(self.addr);
     }
diff --git a/components/script/dom/serviceworkercontainer.rs b/components/script/dom/serviceworkercontainer.rs
index f1a76b58493..7812e91cd8e 100644
--- a/components/script/dom/serviceworkercontainer.rs
+++ b/components/script/dom/serviceworkercontainer.rs
@@ -45,7 +45,7 @@ impl ServiceWorkerContainer {
         }
     }
 
-    #[allow(unrooted_must_root)]
+    #[allow(crown::unrooted_must_root)]
     pub fn new(global: &GlobalScope) -> DomRoot<ServiceWorkerContainer> {
         let client = Client::new(&global.as_window());
         let container = ServiceWorkerContainer::new_inherited(&*client);
diff --git a/components/script/dom/serviceworkerregistration.rs b/components/script/dom/serviceworkerregistration.rs
index 6134979343b..5c5969f42a6 100644
--- a/components/script/dom/serviceworkerregistration.rs
+++ b/components/script/dom/serviceworkerregistration.rs
@@ -61,7 +61,7 @@ impl ServiceWorkerRegistration {
         }
     }
 
-    #[allow(unrooted_must_root)]
+    #[allow(crown::unrooted_must_root)]
     pub fn new(
         global: &GlobalScope,
         scope: ServoUrl,
diff --git a/components/script/dom/servoparser/async_html.rs b/components/script/dom/servoparser/async_html.rs
index 08e3238754b..2e24623e264 100644
--- a/components/script/dom/servoparser/async_html.rs
+++ b/components/script/dom/servoparser/async_html.rs
@@ -2,7 +2,7 @@
  * License, v. 2.0. If a copy of the MPL was not distributed with this
  * file, You can obtain one at https://mozilla.org/MPL/2.0/. */
 
-#![allow(unrooted_must_root)]
+#![allow(crown::unrooted_must_root)]
 
 use std::borrow::Cow;
 use std::cell::Cell;
@@ -204,7 +204,7 @@ fn create_buffer_queue(mut buffers: VecDeque<SendTendril<UTF8>>) -> BufferQueue
 //   |_____________|                         |_______________|
 //
 #[derive(JSTraceable, MallocSizeOf)]
-#[unrooted_must_root_lint::must_root]
+#[crown::unrooted_must_root_lint::must_root]
 pub struct Tokenizer {
     document: Dom<Document>,
     #[ignore_malloc_size_of = "Defined in std"]
@@ -668,7 +668,7 @@ impl Sink {
     }
 }
 
-#[allow(unrooted_must_root)]
+#[allow(crown::unrooted_must_root)]
 impl TreeSink for Sink {
     type Output = Self;
     fn finish(self) -> Self {
diff --git a/components/script/dom/servoparser/html.rs b/components/script/dom/servoparser/html.rs
index cb98ca785a0..fdca7ca58fa 100644
--- a/components/script/dom/servoparser/html.rs
+++ b/components/script/dom/servoparser/html.rs
@@ -2,7 +2,7 @@
  * License, v. 2.0. If a copy of the MPL was not distributed with this
  * file, You can obtain one at https://mozilla.org/MPL/2.0/. */
 
-#![allow(unrooted_must_root)]
+#![allow(crown::unrooted_must_root)]
 
 use std::io;
 
@@ -31,7 +31,7 @@ use crate::dom::processinginstruction::ProcessingInstruction;
 use crate::dom::servoparser::{ParsingAlgorithm, Sink};
 
 #[derive(JSTraceable, MallocSizeOf)]
-#[unrooted_must_root_lint::must_root]
+#[crown::unrooted_must_root_lint::must_root]
 pub struct Tokenizer {
     #[ignore_malloc_size_of = "Defined in html5ever"]
     inner: HtmlTokenizer<TreeBuilder<Dom<Node>, Sink>>,
@@ -109,7 +109,7 @@ unsafe impl CustomTraceable for HtmlTokenizer<TreeBuilder<Dom<Node>, Sink>> {
 
         impl HtmlTracer for Tracer {
             type Handle = Dom<Node>;
-            #[allow(unrooted_must_root)]
+            #[allow(crown::unrooted_must_root)]
             fn trace_handle(&self, node: &Dom<Node>) {
                 unsafe {
                     node.trace(self.0);
diff --git a/components/script/dom/servoparser/mod.rs b/components/script/dom/servoparser/mod.rs
index a21bec9b8c6..632a0442548 100644
--- a/components/script/dom/servoparser/mod.rs
+++ b/components/script/dom/servoparser/mod.rs
@@ -422,7 +422,7 @@ impl ServoParser {
         self.script_nesting_level() > 0 && !self.aborted.get()
     }
 
-    #[allow(unrooted_must_root)]
+    #[allow(crown::unrooted_must_root)]
     fn new_inherited(
         document: &Document,
         tokenizer: Tokenizer,
@@ -447,7 +447,7 @@ impl ServoParser {
         }
     }
 
-    #[allow(unrooted_must_root)]
+    #[allow(crown::unrooted_must_root)]
     fn new(
         document: &Document,
         tokenizer: Tokenizer,
@@ -693,7 +693,7 @@ enum ParserKind {
 }
 
 #[derive(JSTraceable, MallocSizeOf)]
-#[unrooted_must_root_lint::must_root]
+#[crown::unrooted_must_root_lint::must_root]
 enum Tokenizer {
     Html(self::html::Tokenizer),
     AsyncHtml(self::async_html::Tokenizer),
@@ -1023,7 +1023,7 @@ pub struct FragmentContext<'a> {
     pub form_elem: Option<&'a Node>,
 }
 
-#[allow(unrooted_must_root)]
+#[allow(crown::unrooted_must_root)]
 fn insert(
     parent: &Node,
     reference_child: Option<&Node>,
@@ -1063,7 +1063,7 @@ fn insert(
 }
 
 #[derive(JSTraceable, MallocSizeOf)]
-#[unrooted_must_root_lint::must_root]
+#[crown::unrooted_must_root_lint::must_root]
 pub struct Sink {
     #[no_trace]
     base_url: ServoUrl,
@@ -1086,7 +1086,7 @@ impl Sink {
     }
 }
 
-#[allow(unrooted_must_root)] // FIXME: really?
+#[allow(crown::unrooted_must_root)] // FIXME: really?
 impl TreeSink for Sink {
     type Output = Self;
     fn finish(self) -> Self {
diff --git a/components/script/dom/servoparser/prefetch.rs b/components/script/dom/servoparser/prefetch.rs
index 65c103e66df..7ccca449d15 100644
--- a/components/script/dom/servoparser/prefetch.rs
+++ b/components/script/dom/servoparser/prefetch.rs
@@ -23,7 +23,7 @@ use crate::script_module::ScriptFetchOptions;
 use crate::stylesheet_loader::stylesheet_fetch_request;
 
 #[derive(JSTraceable, MallocSizeOf)]
-#[unrooted_must_root_lint::must_root]
+#[crown::unrooted_must_root_lint::must_root]
 pub struct Tokenizer {
     #[ignore_malloc_size_of = "Defined in html5ever"]
     inner: HtmlTokenizer<PrefetchSink>,
diff --git a/components/script/dom/servoparser/xml.rs b/components/script/dom/servoparser/xml.rs
index 583c90fba61..d07d6bc6afb 100644
--- a/components/script/dom/servoparser/xml.rs
+++ b/components/script/dom/servoparser/xml.rs
@@ -2,7 +2,7 @@
  * License, v. 2.0. If a copy of the MPL was not distributed with this
  * file, You can obtain one at https://mozilla.org/MPL/2.0/. */
 
-#![allow(unrooted_must_root)]
+#![allow(crown::unrooted_must_root)]
 
 use html5ever::tokenizer::TokenizerResult;
 use js::jsapi::JSTracer;
@@ -19,7 +19,7 @@ use crate::dom::node::Node;
 use crate::dom::servoparser::{ParsingAlgorithm, Sink};
 
 #[derive(JSTraceable, MallocSizeOf)]
-#[unrooted_must_root_lint::must_root]
+#[crown::unrooted_must_root_lint::must_root]
 pub struct Tokenizer {
     #[ignore_malloc_size_of = "Defined in xml5ever"]
     inner: XmlTokenizer<XmlTreeBuilder<Dom<Node>, Sink>>,
@@ -67,7 +67,7 @@ unsafe impl CustomTraceable for XmlTokenizer<XmlTreeBuilder<Dom<Node>, Sink>> {
 
         impl XmlTracer for Tracer {
             type Handle = Dom<Node>;
-            #[allow(unrooted_must_root)]
+            #[allow(crown::unrooted_must_root)]
             fn trace_handle(&self, node: &Dom<Node>) {
                 unsafe {
                     node.trace(self.0);
diff --git a/components/script/dom/shadowroot.rs b/components/script/dom/shadowroot.rs
index 168a4ec0a32..2c9e56d8352 100644
--- a/components/script/dom/shadowroot.rs
+++ b/components/script/dom/shadowroot.rs
@@ -50,7 +50,7 @@ pub struct ShadowRoot {
 }
 
 impl ShadowRoot {
-    #[allow(unrooted_must_root)]
+    #[allow(crown::unrooted_must_root)]
     fn new_inherited(host: &Element, document: &Document) -> ShadowRoot {
         let document_fragment = DocumentFragment::new_inherited(document);
         let node = document_fragment.upcast::<Node>();
@@ -104,7 +104,7 @@ impl ShadowRoot {
 
     /// Add a stylesheet owned by `owner` to the list of shadow root sheets, in the
     /// correct tree position.
-    #[allow(unrooted_must_root)] // Owner needs to be rooted already necessarily.
+    #[allow(crown::unrooted_must_root)] // Owner needs to be rooted already necessarily.
     pub fn add_stylesheet(&self, owner: &Element, sheet: Arc<Stylesheet>) {
         let stylesheets = &mut self.author_styles.borrow_mut().stylesheets;
         let insertion_point = stylesheets
@@ -125,7 +125,7 @@ impl ShadowRoot {
     }
 
     /// Remove a stylesheet owned by `owner` from the list of shadow root sheets.
-    #[allow(unrooted_must_root)] // Owner needs to be rooted already necessarily.
+    #[allow(crown::unrooted_must_root)] // Owner needs to be rooted already necessarily.
     pub fn remove_stylesheet(&self, owner: &Element, s: &Arc<Stylesheet>) {
         DocumentOrShadowRoot::remove_stylesheet(
             owner,
diff --git a/components/script/dom/stereopannernode.rs b/components/script/dom/stereopannernode.rs
index e8cd8701572..77761a49e42 100644
--- a/components/script/dom/stereopannernode.rs
+++ b/components/script/dom/stereopannernode.rs
@@ -30,7 +30,7 @@ pub struct StereoPannerNode {
 }
 
 impl StereoPannerNode {
-    #[allow(unrooted_must_root)]
+    #[allow(crown::unrooted_must_root)]
     pub fn new_inherited(
         window: &Window,
         context: &BaseAudioContext,
@@ -80,7 +80,7 @@ impl StereoPannerNode {
         Self::new_with_proto(window, None, context, options)
     }
 
-    #[allow(unrooted_must_root)]
+    #[allow(crown::unrooted_must_root)]
     fn new_with_proto(
         window: &Window,
         proto: Option<HandleObject>,
diff --git a/components/script/dom/stylesheet.rs b/components/script/dom/stylesheet.rs
index d48356e4b92..48871356a5c 100644
--- a/components/script/dom/stylesheet.rs
+++ b/components/script/dom/stylesheet.rs
@@ -22,7 +22,7 @@ pub struct StyleSheet {
 }
 
 impl StyleSheet {
-    #[allow(unrooted_must_root)]
+    #[allow(crown::unrooted_must_root)]
     pub fn new_inherited(
         type_: DOMString,
         href: Option<DOMString>,
diff --git a/components/script/dom/stylesheetlist.rs b/components/script/dom/stylesheetlist.rs
index 4d561aa56fd..f430b905584 100644
--- a/components/script/dom/stylesheetlist.rs
+++ b/components/script/dom/stylesheetlist.rs
@@ -16,7 +16,7 @@ use crate::dom::shadowroot::ShadowRoot;
 use crate::dom::stylesheet::StyleSheet;
 use crate::dom::window::Window;
 
-#[unrooted_must_root_lint::must_root]
+#[crown::unrooted_must_root_lint::must_root]
 #[derive(JSTraceable, MallocSizeOf)]
 pub enum StyleSheetListOwner {
     Document(Dom<Document>),
@@ -73,7 +73,7 @@ pub struct StyleSheetList {
 }
 
 impl StyleSheetList {
-    #[allow(unrooted_must_root)]
+    #[allow(crown::unrooted_must_root)]
     fn new_inherited(doc_or_sr: StyleSheetListOwner) -> StyleSheetList {
         StyleSheetList {
             reflector_: Reflector::new(),
@@ -81,7 +81,7 @@ impl StyleSheetList {
         }
     }
 
-    #[allow(unrooted_must_root)]
+    #[allow(crown::unrooted_must_root)]
     pub fn new(window: &Window, doc_or_sr: StyleSheetListOwner) -> DomRoot<StyleSheetList> {
         reflect_dom_object(Box::new(StyleSheetList::new_inherited(doc_or_sr)), window)
     }
diff --git a/components/script/dom/svgsvgelement.rs b/components/script/dom/svgsvgelement.rs
index 4240b3aa657..95782500fc8 100644
--- a/components/script/dom/svgsvgelement.rs
+++ b/components/script/dom/svgsvgelement.rs
@@ -37,7 +37,7 @@ impl SVGSVGElement {
         }
     }
 
-    #[allow(unrooted_must_root)]
+    #[allow(crown::unrooted_must_root)]
     pub fn new(
         local_name: LocalName,
         prefix: Option<Prefix>,
diff --git a/components/script/dom/testbinding.rs b/components/script/dom/testbinding.rs
index 071bccdec75..5e2748ac692 100644
--- a/components/script/dom/testbinding.rs
+++ b/components/script/dom/testbinding.rs
@@ -953,12 +953,12 @@ impl TestBindingMethods for TestBinding {
         Record::new()
     }
 
-    #[allow(unrooted_must_root)]
+    #[allow(crown::unrooted_must_root)]
     fn ReturnResolvedPromise(&self, cx: SafeJSContext, v: HandleValue) -> Fallible<Rc<Promise>> {
         Promise::new_resolved(&self.global(), cx, v)
     }
 
-    #[allow(unrooted_must_root)]
+    #[allow(crown::unrooted_must_root)]
     fn ReturnRejectedPromise(&self, cx: SafeJSContext, v: HandleValue) -> Fallible<Rc<Promise>> {
         Promise::new_rejected(&self.global(), cx, v)
     }
@@ -975,7 +975,7 @@ impl TestBindingMethods for TestBinding {
         p.reject_error(Error::Type(s.0));
     }
 
-    #[allow(unrooted_must_root)]
+    #[allow(crown::unrooted_must_root)]
     fn ResolvePromiseDelayed(&self, p: &Promise, value: DOMString, delay: u64) {
         let promise = p.duplicate();
         let cb = TestBindingCallback {
@@ -1129,7 +1129,7 @@ pub struct TestBindingCallback {
 }
 
 impl TestBindingCallback {
-    #[allow(unrooted_must_root)]
+    #[allow(crown::unrooted_must_root)]
     pub fn invoke(self) {
         self.promise.root().resolve_native(&self.value);
     }
diff --git a/components/script/dom/testbindingmaplike.rs b/components/script/dom/testbindingmaplike.rs
index 19dbcf9da8f..9e8157a05ad 100644
--- a/components/script/dom/testbindingmaplike.rs
+++ b/components/script/dom/testbindingmaplike.rs
@@ -81,7 +81,7 @@ impl TestBindingMaplikeMethods for TestBindingMaplike {
 
 // this error is wrong because if we inline Self::Key and Self::Value all errors are gone
 // TODO: FIX THIS
-#[allow(unrooted_must_root)]
+#[allow(crown::unrooted_must_root)]
 impl Maplike for TestBindingMaplike {
     type Key = DOMString;
     type Value = i32;
diff --git a/components/script/dom/testbindingsetlike.rs b/components/script/dom/testbindingsetlike.rs
index f39e8f69514..6e0530bcb81 100644
--- a/components/script/dom/testbindingsetlike.rs
+++ b/components/script/dom/testbindingsetlike.rs
@@ -55,7 +55,7 @@ impl TestBindingSetlikeMethods for TestBindingSetlike {
 
 // this error is wrong because if we inline Self::Key and Self::Value all errors are gone
 // TODO: FIX THIS
-#[allow(unrooted_must_root)]
+#[allow(crown::unrooted_must_root)]
 impl Setlike for TestBindingSetlike {
     type Key = DOMString;
 
diff --git a/components/script/dom/trackevent.rs b/components/script/dom/trackevent.rs
index 35cf787fcba..ee1f72c67e5 100644
--- a/components/script/dom/trackevent.rs
+++ b/components/script/dom/trackevent.rs
@@ -22,7 +22,7 @@ use crate::dom::texttrack::TextTrack;
 use crate::dom::videotrack::VideoTrack;
 use crate::dom::window::Window;
 
-#[unrooted_must_root_lint::must_root]
+#[crown::unrooted_must_root_lint::must_root]
 #[derive(JSTraceable, MallocSizeOf)]
 enum MediaTrack {
     Video(Dom<VideoTrack>),
@@ -38,7 +38,7 @@ pub struct TrackEvent {
 
 #[allow(non_snake_case)]
 impl TrackEvent {
-    #[allow(unrooted_must_root)]
+    #[allow(crown::unrooted_must_root)]
     fn new_inherited(track: &Option<VideoTrackOrAudioTrackOrTextTrack>) -> TrackEvent {
         let media_track = match track {
             Some(VideoTrackOrAudioTrackOrTextTrack::VideoTrack(VideoTrack)) => {
diff --git a/components/script/dom/vertexarrayobject.rs b/components/script/dom/vertexarrayobject.rs
index 4021fe49e5f..a7f39cb7a46 100644
--- a/components/script/dom/vertexarrayobject.rs
+++ b/components/script/dom/vertexarrayobject.rs
@@ -16,7 +16,7 @@ use crate::dom::webglbuffer::WebGLBuffer;
 use crate::dom::webglrenderingcontext::{Operation, WebGLRenderingContext};
 
 #[derive(JSTraceable, MallocSizeOf)]
-#[unrooted_must_root_lint::must_root]
+#[crown::unrooted_must_root_lint::must_root]
 pub struct VertexArrayObject {
     context: Dom<WebGLRenderingContext>,
     #[no_trace]
@@ -264,7 +264,7 @@ impl Drop for VertexArrayObject {
 }
 
 #[derive(Clone, JSTraceable, MallocSizeOf)]
-#[unrooted_must_root_lint::must_root]
+#[crown::unrooted_must_root_lint::must_root]
 pub struct VertexAttribData {
     pub enabled_as_array: bool,
     pub size: u8,
@@ -278,7 +278,7 @@ pub struct VertexAttribData {
 }
 
 impl Default for VertexAttribData {
-    #[allow(unrooted_must_root)]
+    #[allow(crown::unrooted_must_root)]
     fn default() -> Self {
         Self {
             enabled_as_array: false,
diff --git a/components/script/dom/webgl2renderingcontext.rs b/components/script/dom/webgl2renderingcontext.rs
index bca22a9931f..7882d018c1a 100644
--- a/components/script/dom/webgl2renderingcontext.rs
+++ b/components/script/dom/webgl2renderingcontext.rs
@@ -68,7 +68,7 @@ use crate::dom::window::Window;
 use crate::js::conversions::ToJSValConvertible;
 use crate::script_runtime::JSContext;
 
-#[unrooted_must_root_lint::must_root]
+#[crown::unrooted_must_root_lint::must_root]
 #[derive(JSTraceable, MallocSizeOf)]
 struct IndexedBinding {
     buffer: MutNullableDom<WebGLBuffer>,
@@ -179,7 +179,7 @@ impl WebGL2RenderingContext {
         })
     }
 
-    #[allow(unrooted_must_root)]
+    #[allow(crown::unrooted_must_root)]
     pub fn new(
         window: &Window,
         canvas: &HTMLCanvasElement,
diff --git a/components/script/dom/webgl_extensions/extensions.rs b/components/script/dom/webgl_extensions/extensions.rs
index 4c1bf37d0e4..f6066cfd75f 100644
--- a/components/script/dom/webgl_extensions/extensions.rs
+++ b/components/script/dom/webgl_extensions/extensions.rs
@@ -164,7 +164,7 @@ impl WebGLExtensionFeatures {
 }
 
 /// Handles the list of implemented, supported and enabled WebGL extensions.
-#[unrooted_must_root_lint::must_root]
+#[crown::unrooted_must_root_lint::must_root]
 #[derive(JSTraceable, MallocSizeOf)]
 pub struct WebGLExtensions {
     extensions: DomRefCell<HashMap<String, Box<dyn WebGLExtensionWrapper>>>,
diff --git a/components/script/dom/webgl_extensions/wrapper.rs b/components/script/dom/webgl_extensions/wrapper.rs
index 84338640835..d5fed25c9f3 100644
--- a/components/script/dom/webgl_extensions/wrapper.rs
+++ b/components/script/dom/webgl_extensions/wrapper.rs
@@ -30,7 +30,7 @@ pub trait WebGLExtensionWrapper: JSTraceable + MallocSizeOf {
     fn as_any(&self) -> &dyn Any;
 }
 
-#[unrooted_must_root_lint::must_root]
+#[crown::unrooted_must_root_lint::must_root]
 #[derive(JSTraceable, MallocSizeOf)]
 pub struct TypedWebGLExtensionWrapper<T: WebGLExtension> {
     extension: MutNullableDom<T::Extension>,
diff --git a/components/script/dom/webglframebuffer.rs b/components/script/dom/webglframebuffer.rs
index 541795dc6ce..70cf84cdf11 100644
--- a/components/script/dom/webglframebuffer.rs
+++ b/components/script/dom/webglframebuffer.rs
@@ -34,7 +34,7 @@ fn log2(n: u32) -> u32 {
     31 - n.leading_zeros()
 }
 
-#[unrooted_must_root_lint::must_root]
+#[crown::unrooted_must_root_lint::must_root]
 #[derive(Clone, JSTraceable, MallocSizeOf)]
 enum WebGLFramebufferAttachment {
     Renderbuffer(Dom<WebGLRenderbuffer>),
diff --git a/components/script/dom/webglrenderingcontext.rs b/components/script/dom/webglrenderingcontext.rs
index dc71cf3912a..aa782eb6788 100644
--- a/components/script/dom/webglrenderingcontext.rs
+++ b/components/script/dom/webglrenderingcontext.rs
@@ -282,7 +282,7 @@ impl WebGLRenderingContext {
         })
     }
 
-    #[allow(unrooted_must_root)]
+    #[allow(crown::unrooted_must_root)]
     pub fn new(
         window: &Window,
         canvas: &HTMLCanvasElement,
@@ -4746,7 +4746,7 @@ capabilities! {
     STENCIL_TEST,
 }
 
-#[unrooted_must_root_lint::must_root]
+#[crown::unrooted_must_root_lint::must_root]
 #[derive(JSTraceable, MallocSizeOf)]
 pub struct Textures {
     active_unit: Cell<u32>,
@@ -4826,7 +4826,7 @@ impl Textures {
     }
 }
 
-#[unrooted_must_root_lint::must_root]
+#[crown::unrooted_must_root_lint::must_root]
 #[derive(Default, JSTraceable, MallocSizeOf)]
 struct TextureUnit {
     tex_2d: MutNullableDom<WebGLTexture>,
diff --git a/components/script/dom/webgltexture.rs b/components/script/dom/webgltexture.rs
index ccae44da729..efce995d9b2 100644
--- a/components/script/dom/webgltexture.rs
+++ b/components/script/dom/webgltexture.rs
@@ -33,7 +33,7 @@ pub enum TexParameterValue {
 
 // Textures generated for WebXR are owned by the WebXR device, not by the WebGL thread
 // so the GL texture should not be deleted when the texture is garbage collected.
-#[unrooted_must_root_lint::must_root]
+#[crown::unrooted_must_root_lint::must_root]
 #[derive(JSTraceable, MallocSizeOf)]
 enum WebGLTextureOwner {
     WebGL,
diff --git a/components/script/dom/worker.rs b/components/script/dom/worker.rs
index 7899da4b471..94b248cef84 100644
--- a/components/script/dom/worker.rs
+++ b/components/script/dom/worker.rs
@@ -284,7 +284,7 @@ impl WorkerMethods for Worker {
 }
 
 impl TaskOnce for SimpleWorkerErrorHandler<Worker> {
-    #[allow(unrooted_must_root)]
+    #[allow(crown::unrooted_must_root)]
     fn run_once(self) {
         Worker::dispatch_simple_error(self.addr);
     }
diff --git a/components/script/dom/workerglobalscope.rs b/components/script/dom/workerglobalscope.rs
index eb9b200a935..561193cc2f2 100644
--- a/components/script/dom/workerglobalscope.rs
+++ b/components/script/dom/workerglobalscope.rs
@@ -398,7 +398,7 @@ impl WorkerGlobalScopeMethods for WorkerGlobalScope {
         p
     }
 
-    #[allow(unrooted_must_root)]
+    #[allow(crown::unrooted_must_root)]
     // https://fetch.spec.whatwg.org/#fetch-method
     fn Fetch(
         &self,
diff --git a/components/script/dom/worklet.rs b/components/script/dom/worklet.rs
index e3f94d8e6ce..b039fc12cd0 100644
--- a/components/script/dom/worklet.rs
+++ b/components/script/dom/worklet.rs
@@ -424,7 +424,7 @@ struct WorkletThreadInit {
 }
 
 /// A thread for executing worklets.
-#[unrooted_must_root_lint::must_root]
+#[crown::unrooted_must_root_lint::must_root]
 struct WorkletThread {
     /// Which role the thread is currently playing
     role: WorkletThreadRole,
@@ -463,7 +463,7 @@ unsafe impl JSTraceable for WorkletThread {
 impl WorkletThread {
     /// Spawn a new worklet thread, returning the channel to send it control messages.
     #[allow(unsafe_code)]
-    #[allow(unrooted_must_root)]
+    #[allow(crown::unrooted_must_root)]
     fn spawn(role: WorkletThreadRole, init: WorkletThreadInit) -> Sender<WorkletControl> {
         let (control_sender, control_receiver) = unbounded();
         // TODO: name this thread
diff --git a/components/script/dom/xrinputsourceevent.rs b/components/script/dom/xrinputsourceevent.rs
index 6b7b41026fb..0c7844a42a1 100644
--- a/components/script/dom/xrinputsourceevent.rs
+++ b/components/script/dom/xrinputsourceevent.rs
@@ -29,7 +29,7 @@ pub struct XRInputSourceEvent {
 }
 
 impl XRInputSourceEvent {
-    #[allow(unrooted_must_root)]
+    #[allow(crown::unrooted_must_root)]
     fn new_inherited(frame: &XRFrame, source: &XRInputSource) -> XRInputSourceEvent {
         XRInputSourceEvent {
             event: Event::new_inherited(),
diff --git a/components/script/dom/xrinputsourceschangeevent.rs b/components/script/dom/xrinputsourceschangeevent.rs
index 13f3790b957..ade0a977c51 100644
--- a/components/script/dom/xrinputsourceschangeevent.rs
+++ b/components/script/dom/xrinputsourceschangeevent.rs
@@ -36,7 +36,7 @@ pub struct XRInputSourcesChangeEvent {
 }
 
 impl XRInputSourcesChangeEvent {
-    #[allow(unrooted_must_root)]
+    #[allow(crown::unrooted_must_root)]
     fn new_inherited(session: &XRSession) -> XRInputSourcesChangeEvent {
         XRInputSourcesChangeEvent {
             event: Event::new_inherited(),
diff --git a/components/script/dom/xrsessionevent.rs b/components/script/dom/xrsessionevent.rs
index 84f2d7215d8..67006bac434 100644
--- a/components/script/dom/xrsessionevent.rs
+++ b/components/script/dom/xrsessionevent.rs
@@ -25,7 +25,7 @@ pub struct XRSessionEvent {
 }
 
 impl XRSessionEvent {
-    #[allow(unrooted_must_root)]
+    #[allow(crown::unrooted_must_root)]
     fn new_inherited(session: &XRSession) -> XRSessionEvent {
         XRSessionEvent {
             event: Event::new_inherited(),
diff --git a/components/script/fetch.rs b/components/script/fetch.rs
index 3e2af19f477..73872fbdf0d 100644
--- a/components/script/fetch.rs
+++ b/components/script/fetch.rs
@@ -136,7 +136,7 @@ fn request_init_from_request(request: NetTraitsRequest) -> RequestBuilder {
 }
 
 // https://fetch.spec.whatwg.org/#fetch-method
-#[allow(unrooted_must_root, non_snake_case)]
+#[allow(crown::unrooted_must_root, non_snake_case)]
 pub fn Fetch(
     global: &GlobalScope,
     input: RequestInfo,
@@ -211,7 +211,7 @@ impl FetchResponseListener for FetchContext {
         // TODO
     }
 
-    #[allow(unrooted_must_root)]
+    #[allow(crown::unrooted_must_root)]
     fn process_response(&mut self, fetch_metadata: Result<FetchMetadata, NetworkError>) {
         let promise = self
             .fetch_promise
diff --git a/components/script/lib.rs b/components/script/lib.rs
index 0e652d0be5b..5333f5ea1b5 100644
--- a/components/script/lib.rs
+++ b/components/script/lib.rs
@@ -7,17 +7,10 @@
 #![feature(register_tool)]
 #![deny(unsafe_code)]
 #![doc = "The script crate contains all matters DOM."]
-#![cfg_attr(
-    not(any(
-        feature = "unrooted_must_root_lint",
-        feature = "trace_in_no_trace_lint"
-    )),
-    allow(unknown_lints)
-)]
-#![allow(deprecated)] // FIXME: Can we make `allow` only apply to the `plugin` crate attribute?
-#![plugin(script_plugins)]
-#![register_tool(unrooted_must_root_lint)]
-#![register_tool(trace_in_no_trace_lint)]
+#![register_tool(crown)]
+// Issue a warning if `crown` cannot be found.
+#![warn(unknown_lints)]
+#![deny(crown_is_not_used)]
 
 // These are used a lot so let's keep them for now
 #[macro_use]
diff --git a/components/script/script_module.rs b/components/script/script_module.rs
index 5dfe8975108..4a3da79454a 100644
--- a/components/script/script_module.rs
+++ b/components/script/script_module.rs
@@ -1498,7 +1498,7 @@ pub(crate) fn fetch_external_module_script(
 }
 
 #[derive(JSTraceable, MallocSizeOf)]
-#[unrooted_must_root_lint::must_root]
+#[crown::unrooted_must_root_lint::must_root]
 pub(crate) struct DynamicModuleList {
     requests: Vec<RootedTraceableBox<DynamicModule>>,
 
@@ -1532,7 +1532,7 @@ impl DynamicModuleList {
     }
 }
 
-#[unrooted_must_root_lint::must_root]
+#[crown::unrooted_must_root_lint::must_root]
 #[derive(JSTraceable, MallocSizeOf)]
 struct DynamicModule {
     #[ignore_malloc_size_of = "Rc is hard"]
diff --git a/components/script/script_runtime.rs b/components/script/script_runtime.rs
index a93dbd5bbf8..45e8b9aa716 100644
--- a/components/script/script_runtime.rs
+++ b/components/script/script_runtime.rs
@@ -233,7 +233,7 @@ unsafe extern "C" fn enqueue_promise_job(
     result
 }
 
-#[allow(unsafe_code, unrooted_must_root)]
+#[allow(unsafe_code, crown::unrooted_must_root)]
 /// https://html.spec.whatwg.org/multipage/#the-hostpromiserejectiontracker-implementation
 unsafe extern "C" fn promise_rejection_tracker(
     cx: *mut RawJSContext,
@@ -311,7 +311,7 @@ unsafe extern "C" fn promise_rejection_tracker(
     })
 }
 
-#[allow(unsafe_code, unrooted_must_root)]
+#[allow(unsafe_code, crown::unrooted_must_root)]
 /// https://html.spec.whatwg.org/multipage/#notify-about-rejected-promises
 pub fn notify_about_rejected_promises(global: &GlobalScope) {
     let cx = GlobalScope::get_cx();
diff --git a/components/script/script_thread.rs b/components/script/script_thread.rs
index b33eb922fd8..25f47f3a440 100644
--- a/components/script/script_thread.rs
+++ b/components/script/script_thread.rs
@@ -442,7 +442,7 @@ impl OpaqueSender<CommonScriptMsg> for Sender<MainThreadScriptMsg> {
 
 /// The set of all documents managed by this script thread.
 #[derive(JSTraceable)]
-#[unrooted_must_root_lint::must_root]
+#[crown::unrooted_must_root_lint::must_root]
 pub struct Documents {
     map: HashMapTracedValues<PipelineId, Dom<Document>>,
 }
@@ -496,7 +496,7 @@ impl Documents {
     }
 }
 
-#[allow(unrooted_must_root)]
+#[allow(crown::unrooted_must_root)]
 pub struct DocumentsIter<'a> {
     iter: hash_map::Iter<'a, PipelineId, Dom<Document>>,
 }
@@ -522,7 +522,7 @@ unsafe_no_jsmanaged_fields!(TaskQueue<MainThreadScriptMsg>);
 
 #[derive(JSTraceable)]
 // ScriptThread instances are rooted on creation, so this is okay
-#[allow(unrooted_must_root)]
+#[allow(crown::unrooted_must_root)]
 pub struct ScriptThread {
     /// The documents for pipelines managed by this thread
     documents: DomRefCell<Documents>,
@@ -771,7 +771,7 @@ impl<'a> ScriptMemoryFailsafe<'a> {
 }
 
 impl<'a> Drop for ScriptMemoryFailsafe<'a> {
-    #[allow(unrooted_must_root)]
+    #[allow(crown::unrooted_must_root)]
     fn drop(&mut self) {
         if let Some(owner) = self.owner {
             for (_, document) in owner.documents.borrow().iter() {
diff --git a/components/script_plugins/Cargo.toml b/components/script_plugins/Cargo.toml
deleted file mode 100644
index b5a4d6f43f1..00000000000
--- a/components/script_plugins/Cargo.toml
+++ /dev/null
@@ -1,18 +0,0 @@
-[package]
-name = "script_plugins"
-version = "0.0.1"
-authors = ["The Servo Project Developers"]
-license = "MPL-2.0"
-edition = "2018"
-publish = false
-
-[lib]
-path = "lib.rs"
-plugin = true
-
-[features]
-unrooted_must_root_lint = []
-trace_in_no_trace_lint = []
-
-[package.metadata.rust-analyzer]
-rustc_private = true
diff --git a/components/script_plugins/lib.rs b/components/script_plugins/lib.rs
deleted file mode 100644
index de1ee5f7e53..00000000000
--- a/components/script_plugins/lib.rs
+++ /dev/null
@@ -1,349 +0,0 @@
-/* This Source Code Form is subject to the terms of the Mozilla Public
- * License, v. 2.0. If a copy of the MPL was not distributed with this
- * file, You can obtain one at https://mozilla.org/MPL/2.0/. */
-
-//! Servo's compiler plugin/macro crate
-//!
-//! This crate provides the `#[unrooted_must_root_lint::must_root]` lint. This lint prevents data
-//! of the marked type from being used on the stack. See the source for more details.
-
-#![deny(unsafe_code)]
-#![feature(plugin)]
-#![feature(rustc_private)]
-
-// This rustc crate is private so it needs to be manually imported.
-extern crate rustc_ast;
-extern crate rustc_driver;
-extern crate rustc_error_messages;
-extern crate rustc_hir;
-extern crate rustc_infer;
-extern crate rustc_lint;
-extern crate rustc_middle;
-extern crate rustc_session;
-extern crate rustc_span;
-extern crate rustc_trait_selection;
-extern crate rustc_type_ir;
-
-use rustc_ast::Mutability;
-use rustc_driver::plugin::Registry;
-use rustc_hir::def::{DefKind, Res};
-use rustc_hir::def_id::{CrateNum, DefId, LocalDefId, LOCAL_CRATE};
-use rustc_hir::{ImplItemRef, ItemKind, Node, OwnerId, PrimTy, TraitItemRef};
-use rustc_infer::infer::type_variable::{TypeVariableOrigin, TypeVariableOriginKind};
-use rustc_infer::infer::TyCtxtInferExt;
-use rustc_lint::LateContext;
-use rustc_middle::ty::{self, GenericArg, ParamEnv, Ty, TyCtxt, TypeVisitableExt};
-use rustc_span::source_map::{ExpnKind, MacroKind, Span};
-use rustc_span::symbol::{Ident, Symbol};
-use rustc_span::DUMMY_SP;
-use rustc_trait_selection::infer::InferCtxtExt;
-use rustc_type_ir::{FloatTy, IntTy, UintTy};
-
-#[cfg(feature = "unrooted_must_root_lint")]
-mod unrooted_must_root;
-
-#[cfg(feature = "trace_in_no_trace_lint")]
-mod trace_in_no_trace;
-
-#[allow(unsafe_code)] // #[no_mangle] is unsafe
-#[no_mangle]
-fn __rustc_plugin_registrar(reg: &mut Registry) {
-    #[cfg(feature = "unrooted_must_root_lint")]
-    unrooted_must_root::register(reg);
-    #[cfg(feature = "trace_in_no_trace_lint")]
-    trace_in_no_trace::register(reg);
-}
-
-/// check if a DefId's path matches the given absolute type path
-/// usage e.g. with
-/// `match_def_path(cx, id, &["core", "option", "Option"])`
-fn match_def_path(cx: &LateContext, def_id: DefId, path: &[Symbol]) -> bool {
-    let def_path = cx.tcx.def_path(def_id);
-    let krate = &cx.tcx.crate_name(def_path.krate);
-    if krate != &path[0] {
-        return false;
-    }
-
-    let path = &path[1..];
-    let other = def_path.data;
-
-    if other.len() != path.len() {
-        return false;
-    }
-
-    other
-        .into_iter()
-        .zip(path)
-        .all(|(e, p)| e.data.get_opt_name().as_ref() == Some(p))
-}
-
-fn in_derive_expn(span: Span) -> bool {
-    matches!(
-        span.ctxt().outer_expn_data().kind,
-        ExpnKind::Macro(MacroKind::Derive, ..)
-    )
-}
-
-#[macro_export]
-macro_rules! symbols {
-    ($($s: ident)+) => {
-        #[derive(Clone)]
-        #[allow(non_snake_case)]
-        pub(crate) struct Symbols {
-            $( $s: Symbol, )+
-        }
-
-        impl Symbols {
-            fn new() -> Self {
-                Symbols {
-                    $( $s: Symbol::intern(stringify!($s)), )+
-                }
-            }
-        }
-    }
-}
-
-/*
-Stuff copied from clippy:
-*/
-
-fn find_primitive_impls<'tcx>(tcx: TyCtxt<'tcx>, name: &str) -> impl Iterator<Item = DefId> + 'tcx {
-    use rustc_middle::ty::fast_reject::SimplifiedType::*;
-    let ty = match name {
-        "bool" => BoolSimplifiedType,
-        "char" => CharSimplifiedType,
-        "str" => StrSimplifiedType,
-        "array" => ArraySimplifiedType,
-        "slice" => SliceSimplifiedType,
-        // FIXME: rustdoc documents these two using just `pointer`.
-        //
-        // Maybe this is something we should do here too.
-        "const_ptr" => PtrSimplifiedType(Mutability::Not),
-        "mut_ptr" => PtrSimplifiedType(Mutability::Mut),
-        "isize" => IntSimplifiedType(IntTy::Isize),
-        "i8" => IntSimplifiedType(IntTy::I8),
-        "i16" => IntSimplifiedType(IntTy::I16),
-        "i32" => IntSimplifiedType(IntTy::I32),
-        "i64" => IntSimplifiedType(IntTy::I64),
-        "i128" => IntSimplifiedType(IntTy::I128),
-        "usize" => UintSimplifiedType(UintTy::Usize),
-        "u8" => UintSimplifiedType(UintTy::U8),
-        "u16" => UintSimplifiedType(UintTy::U16),
-        "u32" => UintSimplifiedType(UintTy::U32),
-        "u64" => UintSimplifiedType(UintTy::U64),
-        "u128" => UintSimplifiedType(UintTy::U128),
-        "f32" => FloatSimplifiedType(FloatTy::F32),
-        "f64" => FloatSimplifiedType(FloatTy::F64),
-        _ => return [].iter().copied(),
-    };
-
-    tcx.incoherent_impls(ty).iter().copied()
-}
-
-fn non_local_item_children_by_name(tcx: TyCtxt<'_>, def_id: DefId, name: Symbol) -> Vec<Res> {
-    match tcx.def_kind(def_id) {
-        DefKind::Mod | DefKind::Enum | DefKind::Trait => tcx
-            .module_children(def_id)
-            .iter()
-            .filter(|item| item.ident.name == name)
-            .map(|child| child.res.expect_non_local())
-            .collect(),
-        DefKind::Impl { .. } => tcx
-            .associated_item_def_ids(def_id)
-            .iter()
-            .copied()
-            .filter(|assoc_def_id| tcx.item_name(*assoc_def_id) == name)
-            .map(|assoc_def_id| Res::Def(tcx.def_kind(assoc_def_id), assoc_def_id))
-            .collect(),
-        _ => Vec::new(),
-    }
-}
-
-fn local_item_children_by_name(tcx: TyCtxt<'_>, local_id: LocalDefId, name: Symbol) -> Vec<Res> {
-    let hir = tcx.hir();
-
-    let root_mod;
-    let item_kind = match hir.find_by_def_id(local_id) {
-        Some(Node::Crate(r#mod)) => {
-            root_mod = ItemKind::Mod(r#mod);
-            &root_mod
-        },
-        Some(Node::Item(item)) => &item.kind,
-        _ => return Vec::new(),
-    };
-
-    let res = |ident: Ident, owner_id: OwnerId| {
-        if ident.name == name {
-            let def_id = owner_id.to_def_id();
-            Some(Res::Def(tcx.def_kind(def_id), def_id))
-        } else {
-            None
-        }
-    };
-
-    match item_kind {
-        ItemKind::Mod(r#mod) => r#mod
-            .item_ids
-            .iter()
-            .filter_map(|&item_id| res(hir.item(item_id).ident, item_id.owner_id))
-            .collect(),
-        ItemKind::Impl(r#impl) => r#impl
-            .items
-            .iter()
-            .filter_map(|&ImplItemRef { ident, id, .. }| res(ident, id.owner_id))
-            .collect(),
-        ItemKind::Trait(.., trait_item_refs) => trait_item_refs
-            .iter()
-            .filter_map(|&TraitItemRef { ident, id, .. }| res(ident, id.owner_id))
-            .collect(),
-        _ => Vec::new(),
-    }
-}
-
-fn item_children_by_name(tcx: TyCtxt<'_>, def_id: DefId, name: Symbol) -> Vec<Res> {
-    if let Some(local_id) = def_id.as_local() {
-        local_item_children_by_name(tcx, local_id, name)
-    } else {
-        non_local_item_children_by_name(tcx, def_id, name)
-    }
-}
-
-/// Resolves a def path like `std::vec::Vec`.
-///
-/// Can return multiple resolutions when there are multiple versions of the same crate, e.g.
-/// `memchr::memchr` could return the functions from both memchr 1.0 and memchr 2.0.
-///
-/// Also returns multiple results when there are multiple paths under the same name e.g. `std::vec`
-/// would have both a [`DefKind::Mod`] and [`DefKind::Macro`].
-///
-/// This function is expensive and should be used sparingly.
-pub fn def_path_res(cx: &LateContext<'_>, path: &[&str]) -> Vec<Res> {
-    fn find_crates(tcx: TyCtxt<'_>, name: Symbol) -> impl Iterator<Item = DefId> + '_ {
-        tcx.crates(())
-            .iter()
-            .copied()
-            .filter(move |&num| tcx.crate_name(num) == name)
-            .map(CrateNum::as_def_id)
-    }
-
-    let tcx = cx.tcx;
-
-    let (base, mut path) = match *path {
-        [primitive] => {
-            return vec![PrimTy::from_name(Symbol::intern(primitive)).map_or(Res::Err, Res::PrimTy)];
-        },
-        [base, ref path @ ..] => (base, path),
-        _ => return Vec::new(),
-    };
-
-    let base_sym = Symbol::intern(base);
-
-    let local_crate = if tcx.crate_name(LOCAL_CRATE) == base_sym {
-        Some(LOCAL_CRATE.as_def_id())
-    } else {
-        None
-    };
-
-    let starts = find_primitive_impls(tcx, base)
-        .chain(find_crates(tcx, base_sym))
-        .chain(local_crate)
-        .map(|id| Res::Def(tcx.def_kind(id), id));
-
-    let mut resolutions: Vec<Res> = starts.collect();
-
-    while let [segment, rest @ ..] = path {
-        path = rest;
-        let segment = Symbol::intern(segment);
-
-        resolutions = resolutions
-            .into_iter()
-            .filter_map(|res| res.opt_def_id())
-            .flat_map(|def_id| {
-                // When the current def_id is e.g. `struct S`, check the impl items in
-                // `impl S { ... }`
-                let inherent_impl_children = tcx
-                    .inherent_impls(def_id)
-                    .iter()
-                    .flat_map(|&impl_def_id| item_children_by_name(tcx, impl_def_id, segment));
-
-                let direct_children = item_children_by_name(tcx, def_id, segment);
-
-                inherent_impl_children.chain(direct_children)
-            })
-            .collect();
-    }
-
-    resolutions
-}
-
-/// Resolves a def path like `std::vec::Vec` to its [`DefId`]s, see [`def_path_res`].
-pub fn def_path_def_ids(cx: &LateContext<'_>, path: &[&str]) -> impl Iterator<Item = DefId> {
-    def_path_res(cx, path)
-        .into_iter()
-        .filter_map(|res| res.opt_def_id())
-}
-
-pub fn get_trait_def_id(cx: &LateContext<'_>, path: &[&str]) -> Option<DefId> {
-    def_path_res(cx, path)
-        .into_iter()
-        .find_map(|res| match res {
-            Res::Def(DefKind::Trait | DefKind::TraitAlias, trait_id) => Some(trait_id),
-            _ => None,
-        })
-}
-
-/// Checks whether a type implements a trait.
-/// The function returns false in case the type contains an inference variable.
-///
-/// See:
-/// * [`get_trait_def_id`](super::get_trait_def_id) to get a trait [`DefId`].
-/// * [Common tools for writing lints] for an example how to use this function and other options.
-///
-/// [Common tools for writing lints]: https://github.com/rust-lang/rust-clippy/blob/master/book/src/development/common_tools_writing_lints.md#checking-if-a-type-implements-a-specific-trait
-pub fn implements_trait<'tcx>(
-    cx: &LateContext<'tcx>,
-    ty: Ty<'tcx>,
-    trait_id: DefId,
-    ty_params: &[GenericArg<'tcx>],
-) -> bool {
-    implements_trait_with_env(
-        cx.tcx,
-        cx.param_env,
-        ty,
-        trait_id,
-        ty_params.iter().map(|&arg| Some(arg)),
-    )
-}
-
-/// Same as `implements_trait` but allows using a `ParamEnv` different from the lint context.
-pub fn implements_trait_with_env<'tcx>(
-    tcx: TyCtxt<'tcx>,
-    param_env: ParamEnv<'tcx>,
-    ty: ty::Ty<'tcx>,
-    trait_id: DefId,
-    ty_params: impl IntoIterator<Item = Option<GenericArg<'tcx>>>,
-) -> bool {
-    let ty = tcx.erase_regions(ty);
-    if ty.has_escaping_bound_vars() {
-        return false;
-    }
-    let infcx = tcx.infer_ctxt().build();
-    let orig = TypeVariableOrigin {
-        kind: TypeVariableOriginKind::MiscVariable,
-        span: DUMMY_SP,
-    };
-    let ty_params = tcx.mk_substs_from_iter(
-        ty_params
-            .into_iter()
-            .map(|arg| arg.unwrap_or_else(|| infcx.next_ty_var(orig).into())),
-    );
-    infcx
-        .type_implements_trait(
-            trait_id,
-            // for some unknown reason we need to have vec here
-            // clippy has array
-            vec![ty.into()].into_iter().chain(ty_params),
-            param_env,
-        )
-        .must_apply_modulo_regions()
-}
diff --git a/components/script_plugins/trace_in_no_trace.rs b/components/script_plugins/trace_in_no_trace.rs
deleted file mode 100644
index 102f1ae68de..00000000000
--- a/components/script_plugins/trace_in_no_trace.rs
+++ /dev/null
@@ -1,202 +0,0 @@
-/* This Source Code Form is subject to the terms of the Mozilla Public
- * License, v. 2.0. If a copy of the MPL was not distributed with this
- * file, You can obtain one at https://mozilla.org/MPL/2.0/. */
-
-use rustc_ast::ast::{AttrKind, Attribute};
-use rustc_ast::token::TokenKind;
-use rustc_ast::tokenstream::TokenTree;
-use rustc_ast::AttrArgs;
-use rustc_driver::plugin::Registry;
-use rustc_error_messages::MultiSpan;
-use rustc_hir::{self as hir};
-use rustc_lint::{LateContext, LateLintPass, LintContext, LintPass};
-use rustc_middle::ty;
-use rustc_session::declare_lint;
-use rustc_span::symbol::Symbol;
-
-use crate::{get_trait_def_id, implements_trait, symbols};
-
-declare_lint!(
-    TRACE_IN_NO_TRACE,
-    Deny,
-    "Warn and report incorrect usage of Traceable (jsmanaged) objects in must_not_have_traceable marked wrappers"
-);
-
-declare_lint!(
-    EMPTY_TRACE_IN_NO_TRACE,
-    Warn,
-    "Warn about usage of empty Traceable objects in must_not_have_traceable marked wrappers"
-);
-const EMPTY_TRACE_IN_NO_TRACE_MSG: &str =
-    "must_not_have_traceable marked wrapper is not needed for types that implements \
-empty Traceable (like primitive types). Consider removing the wrapper.";
-
-pub fn register(reg: &mut Registry) {
-    let symbols = Symbols::new();
-    reg.lint_store
-        .register_lints(&[&TRACE_IN_NO_TRACE, &EMPTY_TRACE_IN_NO_TRACE]);
-    reg.lint_store
-        .register_late_pass(move |_| Box::new(NotracePass::new(symbols.clone())));
-}
-
-/// Lint for ensuring safe usage of NoTrace wrappers
-///
-/// This lint (disable with `-A trace-in-no-trace`/`#[allow(trace_in_no_trace)]`) ensures that
-/// wrappers marked with must_not_have_traceable(i: usize) only stores
-/// non-jsmanaged (DOES NOT implement JSTraceble) type in i-th generic
-///
-/// For example usage look at the tests
-pub(crate) struct NotracePass {
-    symbols: Symbols,
-}
-
-impl NotracePass {
-    pub(crate) fn new(symbols: Symbols) -> Self {
-        Self { symbols }
-    }
-}
-
-impl LintPass for NotracePass {
-    fn name(&self) -> &'static str {
-        "ServoNotracePass"
-    }
-}
-
-fn get_must_not_have_traceable(sym: &Symbols, attrs: &[Attribute]) -> Option<usize> {
-    attrs
-        .iter()
-        .find(|attr| {
-            matches!(
-                &attr.kind,
-                AttrKind::Normal(normal)
-                if normal.item.path.segments.len() == 2 &&
-                normal.item.path.segments[0].ident.name == sym.trace_in_no_trace_lint &&
-                normal.item.path.segments[1].ident.name == sym.must_not_have_traceable
-            )
-        })
-        .map(|x| match &x.get_normal_item().args {
-            AttrArgs::Empty => 0,
-            AttrArgs::Delimited(a) => match a
-                .tokens
-                .trees()
-                .next()
-                .expect("Arguments not found for must_not_have_traceable")
-            {
-                TokenTree::Token(tok, _) => match tok.kind {
-                    TokenKind::Literal(lit) => lit.symbol.as_str().parse().unwrap(),
-                    _ => panic!("must_not_have_traceable expected integer literal here"),
-                },
-                TokenTree::Delimited(_, _, _) => {
-                    todo!("must_not_have_traceable does not support multiple notraceable positions")
-                },
-            },
-            _ => {
-                panic!("must_not_have_traceable does not support key-value arguments")
-            },
-        })
-}
-
-fn is_jstraceable<'tcx>(cx: &LateContext<'tcx>, ty: ty::Ty<'tcx>) -> bool {
-    // TODO(sagudev): get_trait_def_id is expensive, use lazy and cache it for whole pass
-    if let Some(trait_id) = get_trait_def_id(cx, &["mozjs", "gc", "Traceable"]) {
-        return implements_trait(cx, ty, trait_id, &[]);
-    }
-    // when running tests
-    if let Some(trait_id) = get_trait_def_id(
-        cx,
-        &[
-            "script_plugins_tests",
-            "trace_in_no_trace_lint",
-            "JSTraceable",
-        ],
-    ) {
-        return implements_trait(cx, ty, trait_id, &[]);
-    }
-    panic!("JSTraceable not found");
-}
-
-/// Gives warrning or errors for incorect usage of NoTrace like `NoTrace<impl Traceable>`.
-fn incorrect_no_trace<'tcx, I: Into<MultiSpan> + Copy>(
-    sym: &'_ Symbols,
-    cx: &LateContext<'tcx>,
-    ty: ty::Ty<'tcx>,
-    span: I,
-) {
-    let mut walker = ty.walk();
-    while let Some(generic_arg) = walker.next() {
-        let t = match generic_arg.unpack() {
-            rustc_middle::ty::subst::GenericArgKind::Type(t) => t,
-            _ => {
-                walker.skip_current_subtree();
-                continue;
-            },
-        };
-        let recur_into_subtree = match t.kind() {
-            ty::Adt(did, substs) => {
-                if let Some(pos) =
-                    get_must_not_have_traceable(sym, &cx.tcx.get_attrs_unchecked(did.did()))
-                {
-                    let inner = substs.type_at(pos);
-                    if inner.is_primitive_ty() {
-                        cx.lint(
-                            EMPTY_TRACE_IN_NO_TRACE,
-                            EMPTY_TRACE_IN_NO_TRACE_MSG,
-                            |lint| lint.set_span(span),
-                        )
-                    } else if is_jstraceable(cx, inner) {
-                        cx.lint(
-                            TRACE_IN_NO_TRACE,
-                            format!(
-                                "must_not_have_traceable marked wrapper must not have \
-jsmanaged inside on {pos}-th position. Consider removing the wrapper."
-                            ),
-                            |lint| lint.set_span(span),
-                        )
-                    }
-                    false
-                } else {
-                    true
-                }
-            },
-            _ => !t.is_primitive_ty(),
-        };
-        if !recur_into_subtree {
-            walker.skip_current_subtree();
-        }
-    }
-}
-
-// NoTrace correct usage of NoTrace must only be checked on Struct (item) and Enums (variants)
-// as these are the only ones that are actually traced
-impl<'tcx> LateLintPass<'tcx> for NotracePass {
-    fn check_item(&mut self, cx: &LateContext<'tcx>, item: &'tcx hir::Item) {
-        // TODO: better performance if we limit with lint attr???
-        /*let attrs = cx.tcx.hir().attrs(item.hir_id());
-        if has_lint_attr(&self.symbols, &attrs, self.symbols.must_root) {
-            return;
-        }*/
-        if let hir::ItemKind::Struct(def, ..) = &item.kind {
-            for ref field in def.fields() {
-                let field_type = cx.tcx.type_of(field.def_id);
-                incorrect_no_trace(&self.symbols, cx, field_type.0, field.span);
-            }
-        }
-    }
-
-    fn check_variant(&mut self, cx: &LateContext, var: &hir::Variant) {
-        match var.data {
-            hir::VariantData::Tuple(fields, ..) => {
-                for field in fields {
-                    let field_type = cx.tcx.type_of(field.def_id);
-                    incorrect_no_trace(&self.symbols, cx, field_type.0, field.ty.span);
-                }
-            },
-            _ => (), // Struct variants already caught by check_struct_def
-        }
-    }
-}
-
-symbols! {
-    trace_in_no_trace_lint
-    must_not_have_traceable
-}
diff --git a/components/script_plugins/unrooted_must_root.rs b/components/script_plugins/unrooted_must_root.rs
deleted file mode 100644
index 2daea47146c..00000000000
--- a/components/script_plugins/unrooted_must_root.rs
+++ /dev/null
@@ -1,376 +0,0 @@
-/* This Source Code Form is subject to the terms of the Mozilla Public
- * License, v. 2.0. If a copy of the MPL was not distributed with this
- * file, You can obtain one at https://mozilla.org/MPL/2.0/. */
-
-use rustc_ast::ast::{AttrKind, Attribute};
-use rustc_driver::plugin::Registry;
-use rustc_hir::{self as hir, intravisit as visit, ExprKind};
-use rustc_lint::{LateContext, LateLintPass, LintContext, LintPass};
-use rustc_middle::ty;
-use rustc_session::declare_lint;
-use rustc_span::def_id::LocalDefId;
-use rustc_span::source_map;
-use rustc_span::symbol::{sym, Symbol};
-
-use crate::{in_derive_expn, match_def_path, symbols};
-
-declare_lint!(
-    UNROOTED_MUST_ROOT,
-    Deny,
-    "Warn and report usage of unrooted jsmanaged objects"
-);
-
-pub fn register(reg: &mut Registry) {
-    let symbols = Symbols::new();
-    reg.lint_store.register_lints(&[&UNROOTED_MUST_ROOT]);
-    reg.lint_store
-        .register_late_pass(move |_| Box::new(UnrootedPass::new(symbols.clone())));
-}
-
-/// Lint for ensuring safe usage of unrooted pointers
-///
-/// This lint (disable with `-A unrooted-must-root`/`#[allow(unrooted_must_root)]`) ensures that
-/// `#[unrooted_must_root_lint::must_root]` values are used correctly.
-///
-/// "Incorrect" usage includes:
-///
-///  - Not being used in a struct/enum field which is not `#[unrooted_must_root_lint::must_root]` itself
-///  - Not being used as an argument to a function (Except onces named `new` and `new_inherited`)
-///  - Not being bound locally in a `let` statement, assignment, `for` loop, or `match` statement.
-///
-/// This helps catch most situations where pointers like `JS<T>` are used in a way that they can be invalidated by a
-/// GC pass.
-///
-/// Structs which have their own mechanism of rooting their unrooted contents (e.g. `ScriptThread`)
-/// can be marked as `#[allow(unrooted_must_root)]`. Smart pointers which root their interior type
-/// can be marked as `#[unrooted_must_root_lint::allow_unrooted_interior]`
-pub(crate) struct UnrootedPass {
-    symbols: Symbols,
-}
-
-impl UnrootedPass {
-    pub(crate) fn new(symbols: Symbols) -> UnrootedPass {
-        UnrootedPass { symbols }
-    }
-}
-
-fn has_lint_attr(sym: &Symbols, attrs: &[Attribute], name: Symbol) -> bool {
-    attrs.iter().any(|attr| {
-        matches!(
-            &attr.kind,
-            AttrKind::Normal(normal)
-            if normal.item.path.segments.len() == 2 &&
-            normal.item.path.segments[0].ident.name == sym.unrooted_must_root_lint &&
-            normal.item.path.segments[1].ident.name == name
-        )
-    })
-}
-
-/// Checks if a type is unrooted or contains any owned unrooted types
-fn is_unrooted_ty<'tcx>(
-    sym: &'_ Symbols,
-    cx: &LateContext<'tcx>,
-    ty: ty::Ty<'tcx>,
-    in_new_function: bool,
-) -> bool {
-    let mut ret = false;
-    let mut walker = ty.walk();
-    while let Some(generic_arg) = walker.next() {
-        let t = match generic_arg.unpack() {
-            rustc_middle::ty::subst::GenericArgKind::Type(t) => t,
-            _ => {
-                walker.skip_current_subtree();
-                continue;
-            },
-        };
-        let recur_into_subtree = match t.kind() {
-            ty::Adt(did, substs) => {
-                let has_attr =
-                    |did, name| has_lint_attr(sym, &cx.tcx.get_attrs_unchecked(did), name);
-                if has_attr(did.did(), sym.must_root) {
-                    ret = true;
-                    false
-                } else if has_attr(did.did(), sym.allow_unrooted_interior) {
-                    false
-                } else if match_def_path(cx, did.did(), &[sym.alloc, sym.rc, sym.Rc]) {
-                    // Rc<Promise> is okay
-                    let inner = substs.type_at(0);
-                    if let ty::Adt(did, _) = inner.kind() {
-                        if has_attr(did.did(), sym.allow_unrooted_in_rc) {
-                            false
-                        } else {
-                            true
-                        }
-                    } else {
-                        true
-                    }
-                } else if match_def_path(cx, did.did(), &[sym::core, sym.cell, sym.Ref]) ||
-                    match_def_path(cx, did.did(), &[sym::core, sym.cell, sym.RefMut]) ||
-                    match_def_path(cx, did.did(), &[sym::core, sym::slice, sym::iter, sym.Iter]) ||
-                    match_def_path(
-                        cx,
-                        did.did(),
-                        &[sym::core, sym::slice, sym::iter, sym.IterMut],
-                    ) ||
-                    match_def_path(cx, did.did(), &[sym.accountable_refcell, sym.Ref]) ||
-                    match_def_path(cx, did.did(), &[sym.accountable_refcell, sym.RefMut]) ||
-                    match_def_path(
-                        cx,
-                        did.did(),
-                        &[sym::std, sym.collections, sym.hash, sym.map, sym.Entry],
-                    ) ||
-                    match_def_path(
-                        cx,
-                        did.did(),
-                        &[
-                            sym::std,
-                            sym.collections,
-                            sym.hash,
-                            sym.map,
-                            sym.OccupiedEntry,
-                        ],
-                    ) ||
-                    match_def_path(
-                        cx,
-                        did.did(),
-                        &[
-                            sym::std,
-                            sym.collections,
-                            sym.hash,
-                            sym.map,
-                            sym.VacantEntry,
-                        ],
-                    ) ||
-                    match_def_path(
-                        cx,
-                        did.did(),
-                        &[sym::std, sym.collections, sym.hash, sym.map, sym.Iter],
-                    ) ||
-                    match_def_path(
-                        cx,
-                        did.did(),
-                        &[sym::std, sym.collections, sym.hash, sym.set, sym.Iter],
-                    )
-                {
-                    // Structures which are semantically similar to an &ptr.
-                    false
-                } else if did.is_box() && in_new_function {
-                    // box in new() is okay
-                    false
-                } else {
-                    true
-                }
-            },
-            ty::Ref(..) => false,    // don't recurse down &ptrs
-            ty::RawPtr(..) => false, // don't recurse down *ptrs
-            ty::FnDef(..) | ty::FnPtr(_) => false,
-
-            _ => true,
-        };
-        if !recur_into_subtree {
-            walker.skip_current_subtree();
-        }
-    }
-    ret
-}
-
-impl LintPass for UnrootedPass {
-    fn name(&self) -> &'static str {
-        "ServoUnrootedPass"
-    }
-}
-
-impl<'tcx> LateLintPass<'tcx> for UnrootedPass {
-    /// All structs containing #[unrooted_must_root_lint::must_root] types
-    /// must be #[unrooted_must_root_lint::must_root] themselves
-    fn check_item(&mut self, cx: &LateContext<'tcx>, item: &'tcx hir::Item) {
-        let attrs = cx.tcx.hir().attrs(item.hir_id());
-        if has_lint_attr(&self.symbols, &attrs, self.symbols.must_root) {
-            return;
-        }
-        if let hir::ItemKind::Struct(def, ..) = &item.kind {
-            for ref field in def.fields() {
-                let field_type = cx.tcx.type_of(field.def_id);
-                if is_unrooted_ty(&self.symbols, cx, field_type.0, false) {
-                    cx.lint(
-                        UNROOTED_MUST_ROOT,
-                        "Type must be rooted, use #[unrooted_must_root_lint::must_root] \
-                         on the struct definition to propagate",
-                        |lint| lint.set_span(field.span),
-                    )
-                }
-            }
-        }
-    }
-
-    /// All enums containing #[unrooted_must_root_lint::must_root] types
-    /// must be #[unrooted_must_root_lint::must_root] themselves
-    fn check_variant(&mut self, cx: &LateContext, var: &hir::Variant) {
-        let ref map = cx.tcx.hir();
-        let parent_item = map.expect_item(map.get_parent_item(var.hir_id).def_id);
-        let attrs = cx.tcx.hir().attrs(parent_item.hir_id());
-        if !has_lint_attr(&self.symbols, &attrs, self.symbols.must_root) {
-            match var.data {
-                hir::VariantData::Tuple(fields, ..) => {
-                    for field in fields {
-                        let field_type = cx.tcx.type_of(field.def_id);
-                        if is_unrooted_ty(&self.symbols, cx, field_type.0, false) {
-                            cx.lint(
-                                UNROOTED_MUST_ROOT,
-                                "Type must be rooted, \
-                                use #[unrooted_must_root_lint::must_root] \
-                                on the enum definition to propagate",
-                                |lint| lint.set_span(field.ty.span),
-                            )
-                        }
-                    }
-                },
-                _ => (), // Struct variants already caught by check_struct_def
-            }
-        }
-    }
-    /// Function arguments that are #[unrooted_must_root_lint::must_root] types are not allowed
-    fn check_fn(
-        &mut self,
-        cx: &LateContext<'tcx>,
-        kind: visit::FnKind<'tcx>,
-        decl: &'tcx hir::FnDecl,
-        body: &'tcx hir::Body,
-        span: source_map::Span,
-        def_id: LocalDefId,
-    ) {
-        let in_new_function = match kind {
-            visit::FnKind::ItemFn(n, _, _) | visit::FnKind::Method(n, _) => {
-                &*n.as_str() == "new" || n.as_str().starts_with("new_")
-            },
-            visit::FnKind::Closure => return,
-        };
-
-        if !in_derive_expn(span) {
-            let sig = cx.tcx.type_of(def_id).0.fn_sig(cx.tcx);
-
-            for (arg, ty) in decl.inputs.iter().zip(sig.inputs().skip_binder().iter()) {
-                if is_unrooted_ty(&self.symbols, cx, *ty, false) {
-                    cx.lint(UNROOTED_MUST_ROOT, "Type must be rooted", |lint| {
-                        lint.set_span(arg.span)
-                    })
-                }
-            }
-
-            if !in_new_function &&
-                is_unrooted_ty(&self.symbols, cx, sig.output().skip_binder(), false)
-            {
-                cx.lint(UNROOTED_MUST_ROOT, "Type must be rooted", |lint| {
-                    lint.set_span(decl.output.span())
-                })
-            }
-        }
-
-        let mut visitor = FnDefVisitor {
-            symbols: &self.symbols,
-            cx,
-            in_new_function,
-        };
-        visit::walk_expr(&mut visitor, &body.value);
-    }
-}
-
-struct FnDefVisitor<'a, 'tcx: 'a> {
-    symbols: &'a Symbols,
-    cx: &'a LateContext<'tcx>,
-    in_new_function: bool,
-}
-
-impl<'a, 'tcx> visit::Visitor<'tcx> for FnDefVisitor<'a, 'tcx> {
-    type Map = rustc_middle::hir::map::Map<'tcx>;
-
-    fn visit_expr(&mut self, expr: &'tcx hir::Expr) {
-        let cx = self.cx;
-
-        let require_rooted = |cx: &LateContext, in_new_function: bool, subexpr: &hir::Expr| {
-            let ty = cx.typeck_results().expr_ty(&subexpr);
-            if is_unrooted_ty(&self.symbols, cx, ty, in_new_function) {
-                cx.lint(
-                    UNROOTED_MUST_ROOT,
-                    format!("Expression of type {:?} must be rooted", ty),
-                    |lint| lint.set_span(subexpr.span),
-                )
-            }
-        };
-
-        match expr.kind {
-            // Trait casts from #[unrooted_must_root_lint::must_root] types are not allowed
-            ExprKind::Cast(subexpr, _) => require_rooted(cx, self.in_new_function, &subexpr),
-            // This catches assignments... the main point of this would be to catch mutable
-            // references to `JS<T>`.
-            // FIXME: Enable this? Triggers on certain kinds of uses of DomRefCell.
-            // hir::ExprAssign(_, ref rhs) => require_rooted(cx, self.in_new_function, &*rhs),
-            // This catches calls; basically, this enforces the constraint that only constructors
-            // can call other constructors.
-            // FIXME: Enable this? Currently triggers with constructs involving DomRefCell, and
-            // constructs like Vec<JS<T>> and RootedVec<JS<T>>.
-            // hir::ExprCall(..) if !self.in_new_function => {
-            //     require_rooted(cx, self.in_new_function, expr);
-            // }
-            _ => {
-                // TODO(pcwalton): Check generics with a whitelist of allowed generics.
-            },
-        }
-
-        visit::walk_expr(self, expr);
-    }
-
-    fn visit_pat(&mut self, pat: &'tcx hir::Pat) {
-        let cx = self.cx;
-
-        // We want to detect pattern bindings that move a value onto the stack.
-        // When "default binding modes" https://github.com/rust-lang/rust/issues/42640
-        // are implemented, the `Unannotated` case could cause false-positives.
-        // These should be fixable by adding an explicit `ref`.
-        match pat.kind {
-            hir::PatKind::Binding(hir::BindingAnnotation::NONE, ..) |
-            hir::PatKind::Binding(hir::BindingAnnotation::MUT, ..) => {
-                let ty = cx.typeck_results().pat_ty(pat);
-                if is_unrooted_ty(self.symbols, cx, ty, self.in_new_function) {
-                    cx.lint(
-                        UNROOTED_MUST_ROOT,
-                        format!("Expression of type {:?} must be rooted", ty),
-                        |lint| lint.set_span(pat.span),
-                    )
-                }
-            },
-            _ => {},
-        }
-
-        visit::walk_pat(self, pat);
-    }
-
-    fn visit_ty(&mut self, _: &'tcx hir::Ty) {}
-
-    fn nested_visit_map(&mut self) -> Self::Map {
-        self.cx.tcx.hir()
-    }
-}
-
-symbols! {
-    unrooted_must_root_lint
-    allow_unrooted_interior
-    allow_unrooted_in_rc
-    must_root
-    alloc
-    rc
-    Rc
-    cell
-    accountable_refcell
-    Ref
-    RefMut
-    Iter
-    IterMut
-    collections
-    hash
-    map
-    set
-    Entry
-    OccupiedEntry
-    VacantEntry
-}