Fix fallout in libs. For the most part I just tagged impls as `#[old_impl_check]`.

2 files changed, 3 insertions, 1 deletions

diff --git a/src/libcollections/btree/node.rs b/src/libcollections/btree/node.rs
index 0a93bbf89c9..1c646032bf1 100644
--- a/src/libcollections/btree/node.rs
+++ b/src/libcollections/btree/node.rs
@@ -1417,7 +1417,7 @@ pub type MutTraversal<'a, K, V> = AbsTraversal<ElemsAndEdges<Zip<slice::Iter<'a,
 /// An owning traversal over a node's entries and edges
 pub type MoveTraversal<K, V> = AbsTraversal<MoveTraversalImpl<K, V>>;
 
-
+#[old_impl_check]
 impl<K, V, E, Impl: TraversalImpl<K, V, E>> Iterator for AbsTraversal<Impl> {
     type Item = TraversalItem<K, V, E>;
 
@@ -1433,6 +1433,7 @@ impl<K, V, E, Impl: TraversalImpl<K, V, E>> Iterator for AbsTraversal<Impl> {
     }
 }
 
+#[old_impl_check]
 impl<K, V, E, Impl: TraversalImpl<K, V, E>> DoubleEndedIterator for AbsTraversal<Impl> {
     fn next_back(&mut self) -> Option<TraversalItem<K, V, E>> {
         let tail_is_edge = self.tail_is_edge;
diff --git a/src/libcollections/lib.rs b/src/libcollections/lib.rs
index 5bf5f78af94..00d3e795f74 100644
--- a/src/libcollections/lib.rs
+++ b/src/libcollections/lib.rs
@@ -26,6 +26,7 @@
 #![feature(unsafe_destructor, slicing_syntax)]
 #![feature(unboxed_closures)]
 #![feature(old_orphan_check)]
+#![feature(old_impl_check)]
 #![feature(associated_types)]
 #![no_std]