2 files changed, 0 insertions, 4 deletions
diff --git a/src/liballoc/boxed.rs b/src/liballoc/boxed.rs
index 51e5fc5820c..b82b02589c0 100644
--- a/src/liballoc/boxed.rs
+++ b/src/liballoc/boxed.rs
@@ -250,8 +250,6 @@ impl<T: ?Sized> DerefMut for Box<T> {
     fn deref_mut(&mut self) -> &mut T { &mut **self }
 }
 
-// FIXME(#21363) remove `old_impl_check` when bug is fixed
-#[old_impl_check]
 impl<'a, T> Iterator for Box<Iterator<Item=T> + 'a> {
     type Item = T;
 
diff --git a/src/liballoc/lib.rs b/src/liballoc/lib.rs
index 6830a1c33df..f807d8d12a6 100644
--- a/src/liballoc/lib.rs
+++ b/src/liballoc/lib.rs
@@ -70,8 +70,6 @@
 #![feature(lang_items, unsafe_destructor)]
 #![feature(box_syntax)]
 #![feature(optin_builtin_traits)]
-// FIXME(#21363) remove `old_impl_check` when bug is fixed
-#![feature(old_impl_check)]
 #![allow(unknown_features)] #![feature(int_uint)]
 #![feature(core)]
 #![feature(hash)]