style: Appease tidy.

components/style/rule_tree/mod.rs

@@ -96,7 +96,7 @@ impl MallocSizeOf for RuleTree {
     }
 }
 
-#[derive(Debug, Hash, PartialEq, Eq)]
+#[derive(Debug, Eq, Hash, PartialEq)]
 struct ChildKey(CascadeLevel, ptr::NonNull<()>);
 
 unsafe impl Send for ChildKey {}

components/style/stylesheets/mod.rs

@@ -65,7 +65,7 @@ pub use self::viewport_rule::ViewportRule;
 
 /// The CORS mode used for a CSS load.
 #[repr(u8)]
-#[derive(Debug, Copy, Clone, PartialEq, Eq, ToShmem)]
+#[derive(Clone, Copy, Debug, Eq, PartialEq, ToShmem)]
 pub enum CorsMode {
     /// No CORS mode, so cross-origin loads can be done.
     None,

components/style/values/specified/color.rs

@@ -47,7 +47,7 @@ pub enum Color {
 /// System colors.
 #[allow(missing_docs)]
 #[cfg(feature = "gecko")]
-#[derive(Copy, Clone, Debug, MallocSizeOf, Parse, PartialEq, ToCss, ToShmem)]
+#[derive(Clone, Copy, Debug, MallocSizeOf, Parse, PartialEq, ToCss, ToShmem)]
 #[repr(u8)]
 pub enum SystemColor {
     #[css(skip)]