diff --git a/src/components/compositing/compositing.rs b/src/components/compositing/compositing.rs
index 737acce3b84..b944567549d 100644
--- a/src/components/compositing/compositing.rs
+++ b/src/components/compositing/compositing.rs
@@ -47,15 +47,15 @@ extern crate core_text;
 pub use compositor_task::{CompositorChan, CompositorTask};
 pub use constellation::Constellation;
 
-mod compositor_task;
+pub mod compositor_task;
 
 mod compositor_data;
 
 mod compositor;
 mod headless;
 
-mod pipeline;
-mod constellation;
+pub mod pipeline;
+pub mod constellation;
 
 mod windowing;
 
diff --git a/src/components/compositing/compositor_task.rs b/src/components/compositing/compositor_task.rs
index faf34915a84..1b8e9653744 100644
--- a/src/components/compositing/compositor_task.rs
+++ b/src/components/compositing/compositor_task.rs
@@ -6,7 +6,7 @@ pub use windowing;
 
 use compositor;
 use headless;
-use constellation::SendableFrameTree;
+pub use constellation::SendableFrameTree;
 use windowing::{ApplicationMethods, WindowMethods};
 use platform::Application;
 
diff --git a/src/components/compositing/constellation.rs b/src/components/compositing/constellation.rs
index f5215be1555..f6d12ebcedd 100644
--- a/src/components/compositing/constellation.rs
+++ b/src/components/compositing/constellation.rs
@@ -42,7 +42,7 @@ pub struct Constellation {
     pub compositor_chan: CompositorChan,
     pub resource_task: ResourceTask,
     pub image_cache_task: ImageCacheTask,
-    pub pipelines: HashMap<PipelineId, Rc<Pipeline>>,
+    pipelines: HashMap<PipelineId, Rc<Pipeline>>,
     navigation_context: NavigationContext,
     next_pipeline_id: PipelineId,
     pending_frames: Vec<FrameChange>,
diff --git a/src/components/compositing/platform/common/glfw_windowing.rs b/src/components/compositing/platform/common/glfw_windowing.rs
index ca42af1f13f..8fea3535fc9 100644
--- a/src/components/compositing/platform/common/glfw_windowing.rs
+++ b/src/components/compositing/platform/common/glfw_windowing.rs
@@ -85,22 +85,20 @@ macro_rules! glfw_callback(
 
 /// The type of a window.
 pub struct Window {
-    pub glfw: glfw::Glfw,
+    glfw: glfw::Glfw,
 
-    pub glfw_window: glfw::Window,
-    pub events: Receiver<(f64, glfw::WindowEvent)>,
+    glfw_window: glfw::Window,
+    events: Receiver<(f64, glfw::WindowEvent)>,
 
-    pub event_queue: RefCell<Vec<WindowEvent>>,
+    event_queue: RefCell<Vec<WindowEvent>>,
 
-    pub drag_origin: Point2D<c_int>,
+    mouse_down_button: Cell<Option<glfw::MouseButton>>,
+    mouse_down_point: Cell<Point2D<c_int>>,
 
-    pub mouse_down_button: Cell<Option<glfw::MouseButton>>,
-    pub mouse_down_point: Cell<Point2D<c_int>>,
+    ready_state: Cell<ReadyState>,
+    render_state: Cell<RenderState>,
 
-    pub ready_state: Cell<ReadyState>,
-    pub render_state: Cell<RenderState>,
-
-    pub last_title_set_time: Cell<Timespec>,
+    last_title_set_time: Cell<Timespec>,
 }
 
 impl WindowMethods<Application> for Window {
@@ -121,8 +119,6 @@ impl WindowMethods<Application> for Window {
 
             event_queue: RefCell::new(vec!()),
 
-            drag_origin: Point2D(0 as c_int, 0),
-
             mouse_down_button: Cell::new(None),
             mouse_down_point: Cell::new(Point2D(0 as c_int, 0)),
 
diff --git a/src/components/embedding/embedding.rs b/src/components/embedding/embedding.rs
index 601d70d4c57..6d5eb46316f 100644
--- a/src/components/embedding/embedding.rs
+++ b/src/components/embedding/embedding.rs
@@ -8,7 +8,7 @@
 #![feature(globs, macro_rules, phase, thread_local)]
 
 #![feature(phase)]
-#[phase(syntax, link)]
+#[phase(plugin, link)]
 extern crate log;
 
 extern crate rustuv;
diff --git a/src/components/embedding/types.rs b/src/components/embedding/types.rs
index a4f538a6bba..c01e1ec0cf1 100644
--- a/src/components/embedding/types.rs
+++ b/src/components/embedding/types.rs
@@ -950,9 +950,10 @@ pub struct cef_scheme_registrar {
   // per unique |scheme_name| value. If |scheme_name| is already registered or
   // if an error occurs this function will return false (0).
   ///
-  add_custom_scheme: extern "C" fn(registrar: *mut cef_scheme_registrar,
-                               scheme_name: *cef_string_t,
-                               is_standard: c_int, is_local: c_int, is_display_isolated: c_int),
+  _add_custom_scheme: extern "C" fn(registrar: *mut cef_scheme_registrar,
+                                    scheme_name: *cef_string_t,
+                                    is_standard: c_int, is_local: c_int,
+                                    is_display_isolated: c_int),
 }
 
 ///
diff --git a/src/components/gfx/platform/linux/font.rs b/src/components/gfx/platform/linux/font.rs
index e61d092ae07..1299315ade2 100644
--- a/src/components/gfx/platform/linux/font.rs
+++ b/src/components/gfx/platform/linux/font.rs
@@ -37,7 +37,7 @@ fn fixed_to_float_ft(f: i32) -> f64 {
 }
 
 pub struct FontTable {
-    bogus: ()
+    _bogus: ()
 }
 
 impl FontTableMethods for FontTable {
diff --git a/src/components/gfx/text/shaping/harfbuzz.rs b/src/components/gfx/text/shaping/harfbuzz.rs
index 251ddb8ab36..b6646db771a 100644
--- a/src/components/gfx/text/shaping/harfbuzz.rs
+++ b/src/components/gfx/text/shaping/harfbuzz.rs
@@ -53,7 +53,6 @@ pub struct ShapedGlyphData {
 }
 
 pub struct ShapedGlyphEntry {
-    cluster: int,
     codepoint: GlyphId,
     advance: Au,
     offset: Option<Point2D<Au>>,
@@ -123,7 +122,6 @@ impl ShapedGlyphData {
             };
 
             ShapedGlyphEntry {
-                cluster: (*glyph_info_i).cluster as int,
                 codepoint: (*glyph_info_i).codepoint as GlyphId,
                 advance: x_advance,
                 offset: offset,
diff --git a/src/components/layout/block.rs b/src/components/layout/block.rs
index 5e0b4a23670..36b525924a7 100644
--- a/src/components/layout/block.rs
+++ b/src/components/layout/block.rs
@@ -76,7 +76,7 @@ impl FloatedBlockInfo {
 /// The solutions for the heights-and-margins constraint equation.
 struct HeightConstraintSolution {
     top: Au,
-    bottom: Au,
+    _bottom: Au,
     height: Au,
     margin_top: Au,
     margin_bottom: Au
@@ -87,7 +87,7 @@ impl HeightConstraintSolution {
            -> HeightConstraintSolution {
         HeightConstraintSolution {
             top: top,
-            bottom: bottom,
+            _bottom: bottom,
             height: height,
             margin_top: margin_top,
             margin_bottom: margin_bottom,
diff --git a/src/components/layout/flow_list.rs b/src/components/layout/flow_list.rs
index e136c29282f..19ccb68727e 100644
--- a/src/components/layout/flow_list.rs
+++ b/src/components/layout/flow_list.rs
@@ -33,15 +33,13 @@ pub struct FlowList {
 /// Double-ended FlowList iterator
 pub struct FlowListIterator<'a> {
     head: &'a Link,
-    tail: Rawlink,
     nelem: uint,
 }
 
 /// Double-ended mutable FlowList iterator
 pub struct MutFlowListIterator<'a> {
-    list: &'a mut FlowList,
+    _list: &'a mut FlowList,
     head: Rawlink,
-    tail: Rawlink,
     nelem: uint,
 }
 
@@ -59,13 +57,6 @@ impl Rawlink {
         unsafe { mem::transmute(n) }
     }
 
-    fn from_optional_flow_ref(flow_ref: &Option<FlowRef>) -> Rawlink {
-        match *flow_ref {
-            None => Rawlink::none(),
-            Some(ref flow_ref) => Rawlink::some(flow_ref.get()),
-        }
-    }
-
     pub unsafe fn resolve_mut(&self) -> Option<&mut Flow> {
         if self.obj.is_null() {
             None
@@ -204,7 +195,6 @@ impl FlowList {
         FlowListIterator {
             nelem: self.len(),
             head: &self.list_head,
-            tail: Rawlink::from_optional_flow_ref(&self.list_tail)
         }
     }
 
@@ -218,8 +208,7 @@ impl FlowList {
         MutFlowListIterator {
             nelem: self.len(),
             head: head_raw,
-            tail: Rawlink::from_optional_flow_ref(&self.list_tail),
-            list: self
+            _list: self
         }
     }
 }
diff --git a/src/components/script/dom/bindings/callback.rs b/src/components/script/dom/bindings/callback.rs
index 7a261bf7cc7..8b0c1879dd3 100644
--- a/src/components/script/dom/bindings/callback.rs
+++ b/src/components/script/dom/bindings/callback.rs
@@ -109,7 +109,7 @@ pub fn WrapCallThisObject<T: Reflectable>(cx: *mut JSContext,
 
 pub struct CallSetup {
     cx: *mut JSContext,
-    handling: ExceptionHandling
+    _handling: ExceptionHandling
 }
 
 impl CallSetup {
@@ -118,7 +118,7 @@ impl CallSetup {
         let cx = win.deref().get_cx();
         CallSetup {
             cx: cx,
-            handling: handling
+            _handling: handling
         }
     }
 
diff --git a/src/components/style/selectors.rs b/src/components/style/selectors.rs
index d19d7d9d480..951f85b8e20 100644
--- a/src/components/style/selectors.rs
+++ b/src/components/style/selectors.rs
@@ -306,13 +306,13 @@ fn parse_one_simple_selector(iter: &mut Iter, namespaces: &NamespaceMap, inside_
                          -> SimpleSelectorParseResult {
     match iter.peek() {
         Some(&IDHash(_)) => match iter.next() {
-            Some(IDHash(id)) => SimpleSelectorResult(IDSelector(id.into_owned())),
+            Some(IDHash(id)) => SimpleSelectorResult(IDSelector(id)),
             _ => fail!("Implementation error, this should not happen."),
         },
         Some(&Delim('.')) => {
             iter.next();
             match iter.next() {
-                Some(Ident(class)) => SimpleSelectorResult(ClassSelector(class.into_owned())),
+                Some(Ident(class)) => SimpleSelectorResult(ClassSelector(class)),
                 _ => InvalidSimpleSelector,
             }
         }
@@ -455,16 +455,16 @@ fn parse_attribute_selector(content: Vec<ComponentValue>, namespaces: &Namespace
     }};)
     let result = match iter.next() {
         None => AttrExists(attr),  // [foo]
-        Some(Delim('=')) => AttrEqual(attr, (get_value!()).into_owned()),  // [foo=bar]
-        Some(IncludeMatch) => AttrIncludes(attr, (get_value!()).into_owned()),  // [foo~=bar]
+        Some(Delim('=')) => AttrEqual(attr, (get_value!())),  // [foo=bar]
+        Some(IncludeMatch) => AttrIncludes(attr, (get_value!())),  // [foo~=bar]
         Some(DashMatch) => {
             let value = get_value!();
             let dashing_value = format!("{}-", value);
-            AttrDashMatch(attr, value.into_owned(), dashing_value)  // [foo|=bar]
+            AttrDashMatch(attr, value, dashing_value)  // [foo|=bar]
         },
-        Some(PrefixMatch) => AttrPrefixMatch(attr, (get_value!()).into_owned()),  // [foo^=bar]
-        Some(SubstringMatch) => AttrSubstringMatch(attr, (get_value!()).into_owned()),  // [foo*=bar]
-        Some(SuffixMatch) => AttrSuffixMatch(attr, (get_value!()).into_owned()),  // [foo$=bar]
+        Some(PrefixMatch) => AttrPrefixMatch(attr, (get_value!())),  // [foo^=bar]
+        Some(SubstringMatch) => AttrSubstringMatch(attr, (get_value!())),  // [foo*=bar]
+        Some(SuffixMatch) => AttrSuffixMatch(attr, (get_value!())),  // [foo$=bar]
         _ => return None
     };
     skip_whitespace(iter);
@@ -551,7 +551,7 @@ fn parse_negation(arguments: Vec<ComponentValue>, namespaces: &NamespaceMap)
 #[inline]
 fn get_next_ident(iter: &mut Iter) -> String {
     match iter.next() {
-        Some(Ident(value)) => value.into_owned(),
+        Some(Ident(value)) => value,
         _ => fail!("Implementation error, this should not happen."),
     }
 }
diff --git a/src/components/style/stylesheets.rs b/src/components/style/stylesheets.rs
index cfe1c52a1c4..801fa70d095 100644
--- a/src/components/style/stylesheets.rs
+++ b/src/components/style/stylesheets.rs
@@ -22,9 +22,6 @@ pub struct Stylesheet {
     /// List of rules in the order they were found (important for
     /// cascading order)
     pub rules: Vec<CSSRule>,
-    namespaces: NamespaceMap,
-    encoding: EncodingRef,
-    base_url: Url,
 }
 
 
@@ -120,7 +117,7 @@ impl Stylesheet {
             }
             state = next_state;
         }
-        Stylesheet{ rules: rules, namespaces: namespaces, encoding: encoding, base_url: base_url }
+        Stylesheet{ rules: rules }
     }
 }