diff --git a/src/libcore/int-template.rs b/src/libcore/int-template.rs
index 3d9de89aa6f..c61e2126374 100644
--- a/src/libcore/int-template.rs
+++ b/src/libcore/int-template.rs
@@ -12,6 +12,10 @@
 #[forbid(deprecated_mode)];
 #[forbid(deprecated_pattern)];
 
+#[cfg(stage0)]
+use T = inst::T;
+#[cfg(stage1)]
+#[cfg(stage2)]
 use T = self::inst::T;
 
 use cmp::{Eq, Ord};
diff --git a/src/libcore/int-template/int.rs b/src/libcore/int-template/int.rs
index c281185c75e..98d833adea9 100644
--- a/src/libcore/int-template/int.rs
+++ b/src/libcore/int-template/int.rs
@@ -10,6 +10,10 @@
 
 //! Operations and constants for `int`
 
+#[cfg(stage0)]
+pub use inst::pow;
+#[cfg(stage1)]
+#[cfg(stage2)]
 pub use self::inst::pow;
 
 mod inst {
diff --git a/src/libcore/iter-trait.rs b/src/libcore/iter-trait.rs
index e0bd4d5b7c8..dfb91c49b7d 100644
--- a/src/libcore/iter-trait.rs
+++ b/src/libcore/iter-trait.rs
@@ -17,6 +17,10 @@
 
 use cmp::{Eq, Ord};
 
+#[cfg(stage0)]
+use inst::{IMPL_T, EACH, SIZE_HINT};
+#[cfg(stage1)]
+#[cfg(stage2)]
 use self::inst::{IMPL_T, EACH, SIZE_HINT};
 
 impl<A> IMPL_T<A>: iter::BaseIter<A> {
diff --git a/src/libcore/kinds.rs b/src/libcore/kinds.rs
index 82ba0d42ce0..c4d500bbafa 100644
--- a/src/libcore/kinds.rs
+++ b/src/libcore/kinds.rs
@@ -44,6 +44,15 @@ pub trait Copy {
     // Empty.
 }
 
+#[cfg(stage0)]
+#[lang="send"]
+pub trait Owned {
+    // Empty.
+}
+
+#[cfg(stage1)]
+#[cfg(stage2)]
+#[cfg(stage3)]
 #[lang="owned"]
 pub trait Owned {
     // Empty.
@@ -54,6 +63,15 @@ pub trait Const {
     // Empty.
 }
 
+#[cfg(stage0)]
+#[lang="owned"]
+pub trait Durable {
+    // Empty.
+}
+
+#[cfg(stage1)]
+#[cfg(stage2)]
+#[cfg(stage3)]
 #[lang="durable"]
 pub trait Durable {
     // Empty.
diff --git a/src/libcore/uint-template.rs b/src/libcore/uint-template.rs
index da0c92021a4..17a2b02647e 100644
--- a/src/libcore/uint-template.rs
+++ b/src/libcore/uint-template.rs
@@ -12,6 +12,10 @@
 #[forbid(deprecated_mode)];
 #[forbid(deprecated_pattern)];
 
+#[cfg(stage0)]
+use T = inst::T;
+#[cfg(stage1)]
+#[cfg(stage2)]
 use T = self::inst::T;
 
 use cmp::{Eq, Ord};
diff --git a/src/libcore/uint-template/u8.rs b/src/libcore/uint-template/u8.rs
index 3c64eebf761..4d0b3f2d4b7 100644
--- a/src/libcore/uint-template/u8.rs
+++ b/src/libcore/uint-template/u8.rs
@@ -10,6 +10,10 @@
 
 //! Operations and constants for `u8`
 
+#[cfg(stage0)]
+pub use inst::is_ascii;
+#[cfg(stage1)]
+#[cfg(stage2)]
 pub use self::inst::is_ascii;
 
 mod inst {
diff --git a/src/libcore/uint-template/uint.rs b/src/libcore/uint-template/uint.rs
index bd7f8c09f47..8451d78d8e0 100644
--- a/src/libcore/uint-template/uint.rs
+++ b/src/libcore/uint-template/uint.rs
@@ -10,6 +10,13 @@
 
 //! Operations and constants for `uint`
 
+#[cfg(stage0)]
+pub use inst::{
+    div_ceil, div_round, div_floor, iterate,
+    next_power_of_two
+};
+#[cfg(stage1)]
+#[cfg(stage2)]
 pub use self::inst::{
     div_ceil, div_round, div_floor, iterate,
     next_power_of_two
diff --git a/src/libstd/priority_queue.rs b/src/libstd/priority_queue.rs
index 642b27fa465..2f24b47883f 100644
--- a/src/libstd/priority_queue.rs
+++ b/src/libstd/priority_queue.rs
@@ -80,10 +80,20 @@ impl <T: Ord> PriorityQueue<T> {
     }
 
     /// Consume the PriorityQueue and return the underlying vector
+    #[cfg(stage0)]
+    pure fn to_vec(self) -> ~[T] { fail }
+    #[cfg(stage1)]
+    #[cfg(stage2)]
+    #[cfg(stage3)]
     pure fn to_vec(self) -> ~[T] { let PriorityQueue{data: v} = self; v }
 
     /// Consume the PriorityQueue and return a vector in sorted
     /// (ascending) order
+    #[cfg(stage0)]
+    pure fn to_sorted_vec(self) -> ~[T] { fail }
+    #[cfg(stage1)]
+    #[cfg(stage2)]
+    #[cfg(stage3)]
     pure fn to_sorted_vec(self) -> ~[T] {
         let mut q = self;
         let mut end = q.len();
diff --git a/src/snapshots.txt b/src/snapshots.txt
index 63428ee982c..2985cabfc26 100644
--- a/src/snapshots.txt
+++ b/src/snapshots.txt
@@ -1,11 +1,3 @@
-S 2012-12-14 dbc52ce
-  macos-i386 994697c57810b8f139d71df47024512970db860c
-  macos-x86_64 f8faa6a80b0b98b27ceee6fec71ded7ca058104d
-  linux-i386 238389613220fac131647a67efadc9e20f09c21a
-  linux-x86_64 8f27f367866d3d52300d7e5d75f602a220bef6fb
-  winnt-i386 92ac1ac09a262a59f40160c9dcf535e1c8ea8e75
-  freebsd-x86_64 d39ff0cbd7fdf04de55baea9d4003705f5ff6441
-
 S 2012-12-08 6630d75
   macos-i386 cdb0f0ebe99b8fea7688d9ae32860a63d1e05399
   macos-x86_64 c509dc252be6e1c5cf862c659235dc94bde397aa