diff --git a/components/compositing/lib.rs b/components/compositing/lib.rs
index 3a1f3459eb1..4e71e9fb2a7 100644
--- a/components/compositing/lib.rs
+++ b/components/compositing/lib.rs
@@ -5,7 +5,8 @@
 #![feature(box_syntax)]
 #![feature(core)]
 #![feature(int_uint)]
-#![feature(io)]
+#![feature(old_io)]
+#![feature(old_path)]
 #![feature(rustc_private)]
 #![feature(std_misc)]
 
diff --git a/components/compositing/scrolling.rs b/components/compositing/scrolling.rs
index 71e58bcd94a..89890fd2b27 100644
--- a/components/compositing/scrolling.rs
+++ b/components/compositing/scrolling.rs
@@ -40,7 +40,7 @@ impl ScrollingTimerProxy {
                 receiver: to_scrolling_timer_receiver,
             };
             scrolling_timer.run();
-        });
+        }).unwrap();
         ScrollingTimerProxy {
             sender: to_scrolling_timer_sender,
         }
diff --git a/components/devtools/lib.rs b/components/devtools/lib.rs
index 78f4cd951fe..828f3b3bbab 100644
--- a/components/devtools/lib.rs
+++ b/components/devtools/lib.rs
@@ -10,7 +10,7 @@
 #![crate_name = "devtools"]
 #![crate_type = "rlib"]
 
-#![feature(int_uint, box_syntax, io, core, rustc_private)]
+#![feature(int_uint, box_syntax, io, old_io, core, rustc_private)]
 #![feature(collections, std_misc)]
 
 #![allow(non_snake_case)]
diff --git a/components/msg/lib.rs b/components/msg/lib.rs
index b7aec05fe87..b4517b2fff9 100644
--- a/components/msg/lib.rs
+++ b/components/msg/lib.rs
@@ -2,7 +2,6 @@
  * License, v. 2.0. If a copy of the MPL was not distributed with this
  * file, You can obtain one at http://mozilla.org/MPL/2.0/. */
 
-#![feature(hash)]
 #![feature(int_uint)]
 
 extern crate azure;
diff --git a/components/script_traits/lib.rs b/components/script_traits/lib.rs
index d6e81a90ac0..58fa83dbf67 100644
--- a/components/script_traits/lib.rs
+++ b/components/script_traits/lib.rs
@@ -2,7 +2,6 @@
  * License, v. 2.0. If a copy of the MPL was not distributed with this
  * file, You can obtain one at http://mozilla.org/MPL/2.0/. */
 
-#![feature(core)]
 #![feature(int_uint)]
 
 extern crate devtools_traits;
diff --git a/components/util/range.rs b/components/util/range.rs
index df32d0cffd3..86d670d2f84 100644
--- a/components/util/range.rs
+++ b/components/util/range.rs
@@ -126,7 +126,7 @@ macro_rules! int_range_index {
 
         impl ::std::num::NumCast for $Self_ {
             fn from<T: ToPrimitive>(n: T) -> Option<$Self_> {
-                n.to_int().map($Self_)
+                n.to_isize().map($Self_)
             }
         }
 
diff --git a/ports/glutin/lib.rs b/ports/glutin/lib.rs
index 8e56150d6af..c64ff2a4e91 100644
--- a/ports/glutin/lib.rs
+++ b/ports/glutin/lib.rs
@@ -6,7 +6,6 @@
 
 #![feature(int_uint)]
 #![feature(core)]
-#![cfg_attr(feature = "window", feature(hash))]
 #![feature(box_syntax)]
 
 #[macro_use] extern crate bitflags;