3 files changed, 5 insertions, 0 deletions
diff --git a/src/liballoc/arc.rs b/src/liballoc/arc.rs
index cccd5cb63ef..6af4083edb2 100644
--- a/src/liballoc/arc.rs
+++ b/src/liballoc/arc.rs
@@ -110,6 +110,7 @@ impl<T: Share + Send> Arc<T> {
     }
 }
 
+#[unstable]
 impl<T: Share + Send> Clone for Arc<T> {
     /// Duplicate an atomically reference counted wrapper.
     ///
@@ -236,6 +237,7 @@ impl<T: Share + Send> Weak<T> {
     }
 }
 
+#[unstable]
 impl<T: Share + Send> Clone for Weak<T> {
     #[inline]
     fn clone(&self) -> Weak<T> {
diff --git a/src/liballoc/owned.rs b/src/liballoc/owned.rs
index fa7a8df5035..6f5d3293556 100644
--- a/src/liballoc/owned.rs
+++ b/src/liballoc/owned.rs
@@ -42,6 +42,7 @@ impl<T: Default> Default for Box<T> {
     fn default() -> Box<T> { box Default::default() }
 }
 
+#[unstable]
 impl<T: Clone> Clone for Box<T> {
     /// Return a copy of the owned box.
     #[inline]
diff --git a/src/liballoc/rc.rs b/src/liballoc/rc.rs
index c6e81fa7f7c..a3ca72f1547 100644
--- a/src/liballoc/rc.rs
+++ b/src/liballoc/rc.rs
@@ -143,6 +143,7 @@ impl<T> Drop for Rc<T> {
     }
 }
 
+#[unstable]
 impl<T> Clone for Rc<T> {
     #[inline]
     fn clone(&self) -> Rc<T> {
@@ -224,6 +225,7 @@ impl<T> Drop for Weak<T> {
     }
 }
 
+#[unstable]
 impl<T> Clone for Weak<T> {
     #[inline]
     fn clone(&self) -> Weak<T> {