diff --git a/components/script/script_thread.rs b/components/script/script_thread.rs
index 8ef650ecee9..1a69c10dcfa 100644
--- a/components/script/script_thread.rs
+++ b/components/script/script_thread.rs
@@ -1281,19 +1281,21 @@ impl ScriptThread {
 
     fn handle_msg_from_script(&self, msg: MainThreadScriptMsg) {
         match msg {
-            MainThreadScriptMsg::Navigate(parent_pipeline_id, load_data, replace) =>
-                self.handle_navigate(parent_pipeline_id, None, load_data, replace),
-            MainThreadScriptMsg::ExitWindow(id) =>
-                self.handle_exit_window_msg(id),
+            MainThreadScriptMsg::Navigate(parent_pipeline_id, load_data, replace) => {
+                self.handle_navigate(parent_pipeline_id, None, load_data, replace)
+            },
+            MainThreadScriptMsg::ExitWindow(id) => {
+                self.handle_exit_window_msg(id)
+            },
             MainThreadScriptMsg::Common(CommonScriptMsg::RunnableMsg(_, runnable)) => {
-                // The category of the runnable is ignored by the pattern, however
-                // it is still respected by profiling (see categorize_msg).
                 runnable.main_thread_handler(self)
             }
-            MainThreadScriptMsg::Common(CommonScriptMsg::CollectReports(reports_chan)) =>
-                self.collect_reports(reports_chan),
-            MainThreadScriptMsg::WorkletLoaded(pipeline_id) =>
-                self.handle_worklet_loaded(pipeline_id),
+            MainThreadScriptMsg::Common(CommonScriptMsg::CollectReports(chan)) => {
+                self.collect_reports(chan)
+            },
+            MainThreadScriptMsg::WorkletLoaded(pipeline_id) => {
+                self.handle_worklet_loaded(pipeline_id)
+            },
         }
     }
 
diff --git a/components/script/task_source/dom_manipulation.rs b/components/script/task_source/dom_manipulation.rs
index 18721539693..636b99f87bf 100644
--- a/components/script/task_source/dom_manipulation.rs
+++ b/components/script/task_source/dom_manipulation.rs
@@ -25,11 +25,14 @@ impl fmt::Debug for DOMManipulationTaskSource {
 }
 
 impl TaskSource for DOMManipulationTaskSource {
-    fn queue_with_wrapper<T>(&self,
-                             msg: Box<T>,
-                             wrapper: &RunnableWrapper)
-                             -> Result<(), ()>
-                             where T: Runnable + Send + 'static {
+    fn queue_with_wrapper<T>(
+        &self,
+        msg: Box<T>,
+        wrapper: &RunnableWrapper,
+    ) -> Result<(), ()>
+    where
+        T: Runnable + Send + 'static,
+    {
         let msg = MainThreadScriptMsg::Common(CommonScriptMsg::RunnableMsg(
             ScriptThreadEventCategory::ScriptEvent,
             wrapper.wrap_runnable(msg),
diff --git a/components/script/task_source/user_interaction.rs b/components/script/task_source/user_interaction.rs
index 753c090df9e..9456d940416 100644
--- a/components/script/task_source/user_interaction.rs
+++ b/components/script/task_source/user_interaction.rs
@@ -25,11 +25,14 @@ impl fmt::Debug for UserInteractionTaskSource {
 }
 
 impl TaskSource for UserInteractionTaskSource {
-    fn queue_with_wrapper<T>(&self,
-                             msg: Box<T>,
-                             wrapper: &RunnableWrapper)
-                             -> Result<(), ()>
-                             where T: Runnable + Send + 'static {
+    fn queue_with_wrapper<T>(
+        &self,
+        msg: Box<T>,
+        wrapper: &RunnableWrapper,
+    ) -> Result<(), ()>
+    where
+        T: Runnable + Send + 'static,
+    {
         let msg = MainThreadScriptMsg::Common(CommonScriptMsg::RunnableMsg(
             ScriptThreadEventCategory::InputEvent,
             wrapper.wrap_runnable(msg),