Fix/silence some warnings

3 files changed, 6 insertions, 3 deletions

diff --git a/components/net/image_cache_thread.rs b/components/net/image_cache_thread.rs
index 7ef657e345f..2df54b8e30c 100644
--- a/components/net/image_cache_thread.rs
+++ b/components/net/image_cache_thread.rs
@@ -5,7 +5,7 @@
 use immeta::load_from_buf;
 use ipc_channel::ipc::{self, IpcReceiver, IpcSender};
 use ipc_channel::router::ROUTER;
-use net_traits::{CoreResourceThread, NetworkError, fetch_async, FetchResponseMsg, FetchMetadata, Metadata};
+use net_traits::{CoreResourceThread, NetworkError, fetch_async, FetchResponseMsg};
 use net_traits::image::base::{Image, ImageMetadata, PixelFormat, load_from_memory};
 use net_traits::image_cache_thread::{ImageCacheChan, ImageCacheCommand, ImageCacheThread, ImageState};
 use net_traits::image_cache_thread::{ImageCacheResult, ImageOrMetadataAvailable, ImageResponse, UsePlaceholder};
diff --git a/components/script/dom/bindings/codegen/CodegenRust.py b/components/script/dom/bindings/codegen/CodegenRust.py
index 6329a81048f..d68b1adf33e 100644
--- a/components/script/dom/bindings/codegen/CodegenRust.py
+++ b/components/script/dom/bindings/codegen/CodegenRust.py
@@ -4260,7 +4260,9 @@ class CGUnionConversionStruct(CGThing):
 
         return CGWrapper(
             CGIndenter(jsConversion, 4),
-            pre="unsafe fn TryConvertTo%s(cx: *mut JSContext, value: HandleValue) -> %s {\n" % (t.name, returnType),
+            # TryConvertToObject is unused, but not generating it while generating others is tricky.
+            pre="#[allow(dead_code)] unsafe fn TryConvertTo%s(cx: *mut JSContext, value: HandleValue) -> %s {\n"
+                % (t.name, returnType),
             post="\n}")
 
     def define(self):
diff --git a/components/script/dom/htmlmediaelement.rs b/components/script/dom/htmlmediaelement.rs
index 8a3f35c23d4..ad899de4c9d 100644
--- a/components/script/dom/htmlmediaelement.rs
+++ b/components/script/dom/htmlmediaelement.rs
@@ -437,6 +437,7 @@ impl HTMLMediaElement {
     }
 
     // https://html.spec.whatwg.org/multipage/#concept-media-load-algorithm
+    #[allow(unreachable_code)]
     fn resource_selection_algorithm_sync(&self, base_url: ServoUrl) {
         // TODO step 5 (populate pending text tracks)
 
@@ -446,7 +447,7 @@ impl HTMLMediaElement {
             ResourceSelectionMode::Object
         } else if let Some(attr) = self.upcast::<Element>().get_attribute(&ns!(), &local_name!("src")) {
             ResourceSelectionMode::Attribute(attr.Value().to_string())
-        } else if false {
+        } else if false {  // TODO: when implementing this remove #[allow(unreachable_code)] above.
             // TODO <source> child
             ResourceSelectionMode::Children(panic!())
         } else {