4 files changed, 1 insertions, 4 deletions
diff --git a/components/hashglobe/src/alloc.rs b/components/hashglobe/src/alloc.rs
index 89f45a25015..50e86ee4af6 100644
--- a/components/hashglobe/src/alloc.rs
+++ b/components/hashglobe/src/alloc.rs
@@ -27,7 +27,7 @@ pub use self::platform::{alloc, dealloc, realloc};
 
 #[cfg(any(unix, target_os = "redox"))]
 mod platform {
-    extern crate libc;
+    use libc;
 
     #[cfg(not(any(target_os = "android")))]
     use std::ptr;
diff --git a/components/hashglobe/src/table.rs b/components/hashglobe/src/table.rs
index de02e09de97..98f6da2a700 100644
--- a/components/hashglobe/src/table.rs
+++ b/components/hashglobe/src/table.rs
@@ -724,7 +724,6 @@ fn test_offset_calculation() {
 
 impl<K, V> RawTable<K, V> {
     unsafe fn new_uninitialized(capacity: usize) -> RawTable<K, V> {
-        extern crate libc;
         if let Ok(table) = Self::try_new_uninitialized(capacity) {
             table
         } else {
diff --git a/components/layout_thread/lib.rs b/components/layout_thread/lib.rs
index 77f95323490..7600cdd478d 100644
--- a/components/layout_thread/lib.rs
+++ b/components/layout_thread/lib.rs
@@ -63,7 +63,6 @@ use layout::traversal::{
 };
 use layout::wrapper::LayoutNodeLayoutData;
 use layout_traits::LayoutThreadFactory;
-use libc::c_void;
 use malloc_size_of::{MallocSizeOf, MallocSizeOfOps};
 use metrics::{PaintTimeMetrics, ProfilerMetadataFactory, ProgressiveWebMetric};
 use msg::constellation_msg::{
diff --git a/components/layout_thread_2020/lib.rs b/components/layout_thread_2020/lib.rs
index fd94c32dc0c..fd5f0c91b32 100644
--- a/components/layout_thread_2020/lib.rs
+++ b/components/layout_thread_2020/lib.rs
@@ -48,7 +48,6 @@ use layout::query::{
 use layout::traversal::RecalcStyle;
 use layout::{BoxTree, FragmentTree};
 use layout_traits::LayoutThreadFactory;
-use libc::c_void;
 use malloc_size_of::{MallocSizeOf, MallocSizeOfOps};
 use metrics::{PaintTimeMetrics, ProfilerMetadataFactory, ProgressiveWebMetric};
 use msg::constellation_msg::{