diff --git a/components/script_traits/lib.rs b/components/script_traits/lib.rs
index 4cf005c93f2..d87fdbad5d3 100644
--- a/components/script_traits/lib.rs
+++ b/components/script_traits/lib.rs
@@ -18,7 +18,8 @@ extern crate devtools_traits;
 extern crate euclid;
 extern crate gfx_traits;
 extern crate heapsize;
-#[macro_use] extern crate heapsize_derive;
+#[macro_use]
+extern crate heapsize_derive;
 extern crate hyper;
 extern crate hyper_serde;
 extern crate ipc_channel;
@@ -252,7 +253,7 @@ pub enum ConstellationControlMsg {
     /// Report an error from a CSS parser for the given pipeline
     ReportCSSError(PipelineId, String, usize, usize, String),
     /// Reload the given page.
-    Reload(PipelineId)
+    Reload(PipelineId),
 }
 
 impl fmt::Debug for ConstellationControlMsg {
@@ -284,7 +285,7 @@ impl fmt::Debug for ConstellationControlMsg {
             DispatchStorageEvent(..) => "DispatchStorageEvent",
             FramedContentChanged(..) => "FramedContentChanged",
             ReportCSSError(..) => "ReportCSSError",
-            Reload(..) => "Reload"
+            Reload(..) => "Reload",
         };
         write!(formatter, "ConstellationMsg::{}", variant)
     }
@@ -384,10 +385,7 @@ pub enum TouchpadPressurePhase {
 
 /// 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);
 
 /// Notifies the script thread to fire due timers.
 /// `TimerSource` must be `FromWindow` when dispatched to `ScriptThread` and
@@ -479,9 +477,7 @@ 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
@@ -490,7 +486,7 @@ pub enum IFrameSandboxState {
     /// Sandbox attribute is present
     IFrameSandboxed,
     /// Sandbox attribute is not present
-    IFrameUnsandboxed
+    IFrameUnsandboxed,
 }
 
 /// Specifies the information required to load an iframe.
@@ -744,5 +740,5 @@ pub struct WorkerScriptLoadOrigin {
     /// the referrer policy which is used
     pub referrer_policy: Option<ReferrerPolicy>,
     /// the pipeline id of the entity requesting the load
-    pub pipeline_id: Option<PipelineId>
+    pub pipeline_id: Option<PipelineId>,
 }
diff --git a/components/script_traits/script_msg.rs b/components/script_traits/script_msg.rs
index 80dbc3f4165..e268d67bc1d 100644
--- a/components/script_traits/script_msg.rs
+++ b/components/script_traits/script_msg.rs
@@ -57,7 +57,7 @@ pub enum LogEntry {
     /// Error, with a reason
     Error(String),
     /// warning, with a reason
-    Warn(String)
+    Warn(String),
 }
 
 /// Messages from the script to the constellation.
@@ -148,7 +148,7 @@ pub enum ScriptMsg {
     /// Enter or exit fullscreen
     SetFullscreenState(bool),
     /// Requests that the compositor shut down.
-    Exit
+    Exit,
 }
 
 /// Entities required to spawn service workers
@@ -175,7 +175,7 @@ pub struct SWManagerSenders {
     /// sender for communicating with constellation
     pub swmanager_sender: IpcSender<SWManagerMsg>,
     /// sender for communicating with resource thread
-    pub resource_sender: IpcSender<CoreResourceMsg>
+    pub resource_sender: IpcSender<CoreResourceMsg>,
 }
 
 /// Messages sent to Service Worker Manager thread
@@ -195,6 +195,5 @@ pub enum ServiceWorkerMsg {
 #[derive(Deserialize, Serialize)]
 pub enum SWManagerMsg {
     /// Provide the constellation with a means of communicating with the Service Worker Manager
-    OwnSender(IpcSender<ServiceWorkerMsg>)
-
+    OwnSender(IpcSender<ServiceWorkerMsg>),
 }
diff --git a/components/script_traits/webdriver_msg.rs b/components/script_traits/webdriver_msg.rs
index c197b0dfc18..9fe9e9b80f5 100644
--- a/components/script_traits/webdriver_msg.rs
+++ b/components/script_traits/webdriver_msg.rs
@@ -15,7 +15,7 @@ use servo_url::ServoUrl;
 #[derive(Deserialize, Serialize)]
 pub enum WebDriverScriptCommand {
     AddCookie(#[serde(deserialize_with = "::hyper_serde::deserialize",
-                      serialize_with = "::hyper_serde::serialize")]
+                serialize_with = "::hyper_serde::serialize")]
               Cookie,
               IpcSender<Result<(), WebDriverCookieError>>),
     ExecuteScript(String, IpcSender<WebDriverJSResult>),
@@ -35,13 +35,13 @@ pub enum WebDriverScriptCommand {
     GetUrl(IpcSender<ServoUrl>),
     IsEnabled(String, IpcSender<Result<bool, ()>>),
     IsSelected(String, IpcSender<Result<bool, ()>>),
-    GetTitle(IpcSender<String>)
+    GetTitle(IpcSender<String>),
 }
 
 #[derive(Deserialize, Serialize)]
 pub enum WebDriverCookieError {
     InvalidDomain,
-    UnableToSetCookie
+    UnableToSetCookie,
 }
 
 #[derive(Deserialize, Serialize)]
@@ -50,8 +50,7 @@ pub enum WebDriverJSValue {
     Null,
     Boolean(bool),
     Number(f64),
-    String(String),
-    // TODO: Object and WebElement
+    String(String), // TODO: Object and WebElement
 }
 
 #[derive(Deserialize, Serialize)]
@@ -60,7 +59,7 @@ pub enum WebDriverJSError {
     UnknownType,
     /// Occurs when handler received an event message for a layout channel that is not
     /// associated with the current script thread
-    BrowsingContextNotFound
+    BrowsingContextNotFound,
 }
 
 pub type WebDriverJSResult = Result<WebDriverJSValue, WebDriverJSError>;
@@ -69,7 +68,7 @@ pub type WebDriverJSResult = Result<WebDriverJSValue, WebDriverJSError>;
 pub enum WebDriverFrameId {
     Short(u16),
     Element(String),
-    Parent
+    Parent,
 }
 
 impl ToJson for WebDriverJSValue {
@@ -79,7 +78,7 @@ impl ToJson for WebDriverJSValue {
             WebDriverJSValue::Null => Json::Null,
             WebDriverJSValue::Boolean(ref x) => x.to_json(),
             WebDriverJSValue::Number(ref x) => x.to_json(),
-            WebDriverJSValue::String(ref x) => x.to_json()
+            WebDriverJSValue::String(ref x) => x.to_json(),
         }
     }
 }
@@ -87,5 +86,5 @@ impl ToJson for WebDriverJSValue {
 #[derive(Deserialize, Serialize)]
 pub enum LoadStatus {
     LoadComplete,
-    LoadTimeout
+    LoadTimeout,
 }