diff --git a/components/script_traits/lib.rs b/components/script_traits/lib.rs
index d92c5f1b82e..6c087690b5f 100644
--- a/components/script_traits/lib.rs
+++ b/components/script_traits/lib.rs
@@ -28,7 +28,8 @@ extern crate msg;
 extern crate net_traits;
 extern crate profile_traits;
 extern crate rustc_serialize;
-#[macro_use] extern crate serde;
+#[macro_use]
+extern crate serde;
 extern crate servo_atoms;
 extern crate servo_channel;
 extern crate servo_url;
@@ -135,12 +136,16 @@ pub struct LoadData {
     /// The creator pipeline id if this is an about:blank load.
     pub creator_pipeline_id: Option<PipelineId>,
     /// The method.
-    #[serde(deserialize_with = "::hyper_serde::deserialize",
-            serialize_with = "::hyper_serde::serialize")]
+    #[serde(
+        deserialize_with = "::hyper_serde::deserialize",
+        serialize_with = "::hyper_serde::serialize"
+    )]
     pub method: Method,
     /// The headers.
-    #[serde(deserialize_with = "::hyper_serde::deserialize",
-            serialize_with = "::hyper_serde::serialize")]
+    #[serde(
+        deserialize_with = "::hyper_serde::deserialize",
+        serialize_with = "::hyper_serde::serialize"
+    )]
     pub headers: Headers,
     /// The data.
     pub data: Option<Vec<u8>>,
@@ -159,16 +164,17 @@ pub enum JsEvalResult {
     /// <https://html.spec.whatwg.org/multipage/#navigate> 12.11
     NoContent,
     /// The js evaluation had a string result.
-    Ok(Vec<u8>)
+    Ok(Vec<u8>),
 }
 
 impl LoadData {
     /// Create a new `LoadData` object.
-    pub fn new(url: ServoUrl,
-               creator_pipeline_id: Option<PipelineId>,
-               referrer_policy: Option<ReferrerPolicy>,
-               referrer_url: Option<ServoUrl>)
-               -> LoadData {
+    pub fn new(
+        url: ServoUrl,
+        creator_pipeline_id: Option<PipelineId>,
+        referrer_policy: Option<ReferrerPolicy>,
+        referrer_url: Option<ServoUrl>,
+    ) -> LoadData {
         LoadData {
             url: url,
             creator_pipeline_id: creator_pipeline_id,
@@ -294,7 +300,12 @@ pub enum ConstellationControlMsg {
     PostMessage(PipelineId, Option<ImmutableOrigin>, Vec<u8>),
     /// Updates the current pipeline ID of a given iframe.
     /// First PipelineId is for the parent, second is the new PipelineId for the frame.
-    UpdatePipelineId(PipelineId, BrowsingContextId, PipelineId, UpdatePipelineIdReason),
+    UpdatePipelineId(
+        PipelineId,
+        BrowsingContextId,
+        PipelineId,
+        UpdatePipelineIdReason,
+    ),
     /// Updates the history state and url of a given pipeline.
     UpdateHistoryState(PipelineId, Option<HistoryStateId>, ServoUrl),
     /// Removes inaccesible history states.
@@ -322,7 +333,14 @@ pub enum ConstellationControlMsg {
     },
     /// Cause a `storage` event to be dispatched at the appropriate window.
     /// The strings are key, old value and new value.
-    DispatchStorageEvent(PipelineId, StorageType, ServoUrl, Option<String>, Option<String>, Option<String>),
+    DispatchStorageEvent(
+        PipelineId,
+        StorageType,
+        ServoUrl,
+        Option<String>,
+        Option<String>,
+        Option<String>,
+    ),
     /// Report an error from a CSS parser for the given pipeline
     ReportCSSError(PipelineId, String, u32, u32, String),
     /// Reload the given page.
@@ -447,19 +465,29 @@ pub enum CompositorEvent {
         MouseButton,
         Point2D<f32>,
         Option<UntrustedNodeAddress>,
-        Option<Point2D<f32>>
+        Option<Point2D<f32>>,
     ),
     /// The mouse was moved over a point (or was moved out of the recognizable region).
     MouseMoveEvent(Option<Point2D<f32>>, Option<UntrustedNodeAddress>),
     /// A touch event was generated with a touch ID and location.
-    TouchEvent(TouchEventType, TouchId, Point2D<f32>, Option<UntrustedNodeAddress>),
+    TouchEvent(
+        TouchEventType,
+        TouchId,
+        Point2D<f32>,
+        Option<UntrustedNodeAddress>,
+    ),
     /// A key was pressed.
     KeyEvent(Option<char>, Key, KeyState, KeyModifiers),
 }
 
 /// Requests a TimerEvent-Message be sent after the given duration.
 #[derive(Deserialize, Serialize)]
-pub struct TimerEventRequest(pub IpcSender<TimerEvent>, pub TimerSource, pub TimerEventId, pub MsDuration);
+pub struct TimerEventRequest(
+    pub IpcSender<TimerEvent>,
+    pub TimerSource,
+    pub TimerEventId,
+    pub MsDuration,
+);
 
 /// Type of messages that can be sent to the timer scheduler.
 #[derive(Deserialize, Serialize)]
@@ -568,8 +596,10 @@ pub trait ScriptThreadFactory {
     /// Type of message sent from script to layout.
     type Message;
     /// Create a `ScriptThread`.
-    fn create(state: InitialScriptState, load_data: LoadData)
-        -> (Sender<Self::Message>, Receiver<Self::Message>);
+    fn create(
+        state: InitialScriptState,
+        load_data: LoadData,
+    ) -> (Sender<Self::Message>, Receiver<Self::Message>);
 }
 
 /// Whether the sandbox attribute is present for an iframe element
@@ -678,7 +708,11 @@ pub enum WebDriverCommandMsg {
     /// Act as if keys were pressed in the browsing context with the given ID.
     SendKeys(BrowsingContextId, Vec<(Key, KeyModifiers, KeyState)>),
     /// Set the window size.
-    SetWindowSize(TopLevelBrowsingContextId, DeviceUintSize, IpcSender<WindowSizeData>),
+    SetWindowSize(
+        TopLevelBrowsingContextId,
+        DeviceUintSize,
+        IpcSender<WindowSizeData>,
+    ),
     /// Take a screenshot of the window.
     TakeScreenshot(TopLevelBrowsingContextId, IpcSender<Option<Image>>),
 }
@@ -706,7 +740,11 @@ pub enum ConstellationMsg {
     /// Request to traverse the joint session history of the provided browsing context.
     TraverseHistory(TopLevelBrowsingContextId, TraversalDirection),
     /// Inform the constellation of a window being resized.
-    WindowSize(Option<TopLevelBrowsingContextId>, WindowSizeData, WindowSizeType),
+    WindowSize(
+        Option<TopLevelBrowsingContextId>,
+        WindowSizeData,
+        WindowSizeType,
+    ),
     /// Requests that the constellation instruct layout to begin a new tick of the animation.
     TickAnimation(PipelineId, AnimationTickType),
     /// Dispatch a webdriver command
@@ -808,17 +846,20 @@ pub enum PaintWorkletError {
 /// Execute paint code in the worklet thread pool.
 pub trait Painter: SpeculativePainter {
     /// <https://drafts.css-houdini.org/css-paint-api/#draw-a-paint-image>
-    fn draw_a_paint_image(&self,
-                          size: TypedSize2D<f32, CSSPixel>,
-                          zoom: TypedScale<f32, CSSPixel, DevicePixel>,
-                          properties: Vec<(Atom, String)>,
-                          arguments: Vec<String>)
-                          -> Result<DrawAPaintImageResult, PaintWorkletError>;
+    fn draw_a_paint_image(
+        &self,
+        size: TypedSize2D<f32, CSSPixel>,
+        zoom: TypedScale<f32, CSSPixel, DevicePixel>,
+        properties: Vec<(Atom, String)>,
+        arguments: Vec<String>,
+    ) -> Result<DrawAPaintImageResult, PaintWorkletError>;
 }
 
 impl fmt::Debug for Painter {
     fn fmt(&self, fmt: &mut fmt::Formatter) -> fmt::Result {
-        fmt.debug_tuple("Painter").field(&format_args!("..")).finish()
+        fmt.debug_tuple("Painter")
+            .field(&format_args!(".."))
+            .finish()
     }
 }
 
diff --git a/components/script_traits/script_msg.rs b/components/script_traits/script_msg.rs
index 6dba5c00509..ca8c5463aa8 100644
--- a/components/script_traits/script_msg.rs
+++ b/components/script_traits/script_msg.rs
@@ -92,7 +92,13 @@ pub enum ScriptMsg {
     InitiateNavigateRequest(RequestInit, /* cancellation_chan */ IpcReceiver<()>),
     /// Broadcast a storage event to every same-origin pipeline.
     /// The strings are key, old value and new value.
-    BroadcastStorageEvent(StorageType, ServoUrl, Option<String>, Option<String>, Option<String>),
+    BroadcastStorageEvent(
+        StorageType,
+        ServoUrl,
+        Option<String>,
+        Option<String>,
+        Option<String>,
+    ),
     /// Indicates whether this pipeline is currently running animations.
     ChangeRunningAnimationsState(AnimationState),
     /// Requests that a new 2D canvas thread be created. (This is done in the constellation because
@@ -107,9 +113,16 @@ pub enum ScriptMsg {
     /// Get the parent info for a given pipeline.
     GetParentInfo(PipelineId, IpcSender<Option<PipelineId>>),
     /// Get the top-level browsing context info for a given browsing context.
-    GetTopForBrowsingContext(BrowsingContextId, IpcSender<Option<TopLevelBrowsingContextId>>),
+    GetTopForBrowsingContext(
+        BrowsingContextId,
+        IpcSender<Option<TopLevelBrowsingContextId>>,
+    ),
     /// Get the nth child browsing context ID for a given browsing context, sorted in tree order.
-    GetChildBrowsingContextId(BrowsingContextId, usize, IpcSender<Option<BrowsingContextId>>),
+    GetChildBrowsingContextId(
+        BrowsingContextId,
+        usize,
+        IpcSender<Option<BrowsingContextId>>,
+    ),
     /// All pending loads are complete, and the `load` event for this pipeline
     /// has been dispatched.
     LoadComplete,
@@ -142,7 +155,10 @@ pub enum ScriptMsg {
     /// A load of the initial `about:blank` has been completed in an IFrame.
     ScriptNewIFrame(IFrameLoadInfo, IpcSender<LayoutControlMsg>),
     /// Script has opened a new auxiliary browsing context.
-    ScriptNewAuxiliary(AuxiliaryBrowsingContextLoadInfo, IpcSender<LayoutControlMsg>),
+    ScriptNewAuxiliary(
+        AuxiliaryBrowsingContextLoadInfo,
+        IpcSender<LayoutControlMsg>,
+    ),
     /// Requests that the constellation set the contents of the clipboard
     SetClipboardContents(String),
     /// Mark a new document as active
diff --git a/components/script_traits/webdriver_msg.rs b/components/script_traits/webdriver_msg.rs
index e53e6e77ae3..b24aeca5198 100644
--- a/components/script_traits/webdriver_msg.rs
+++ b/components/script_traits/webdriver_msg.rs
@@ -14,10 +14,14 @@ use servo_url::ServoUrl;
 
 #[derive(Deserialize, Serialize)]
 pub enum WebDriverScriptCommand {
-    AddCookie(#[serde(deserialize_with = "::hyper_serde::deserialize",
-                serialize_with = "::hyper_serde::serialize")]
-              Cookie<'static>,
-              IpcSender<Result<(), WebDriverCookieError>>),
+    AddCookie(
+        #[serde(
+            deserialize_with = "::hyper_serde::deserialize",
+            serialize_with = "::hyper_serde::serialize"
+        )]
+        Cookie<'static>,
+        IpcSender<Result<(), WebDriverCookieError>>,
+    ),
     ExecuteScript(String, IpcSender<WebDriverJSResult>),
     ExecuteAsyncScript(String, IpcSender<WebDriverJSResult>),
     FindElementCSS(String, IpcSender<Result<Option<String>, ()>>),