Set unstable feature names appropriately

* `core` - for the core crate
* `hash` - hashing
* `io` - io
* `path` - path
* `alloc` - alloc crate
* `rand` - rand crate
* `collections` - collections crate
* `std_misc` - other parts of std
* `test` - test crate
* `rustc_private` - everything else

1 files changed, 2 insertions, 2 deletions

diff --git a/src/libcollections/binary_heap.rs b/src/libcollections/binary_heap.rs
index 003a05f6b04..3e02ac2137d 100644
--- a/src/libcollections/binary_heap.rs
+++ b/src/libcollections/binary_heap.rs
@@ -551,7 +551,7 @@ impl<T: Ord> BinaryHeap<T> {
 
     /// Clears the binary heap, returning an iterator over the removed elements.
     #[inline]
-    #[unstable(feature = "unnamed_feature",
+    #[unstable(feature = "collections",
                reason = "matches collection reform specification, waiting for dust to settle")]
     pub fn drain(&mut self) -> Drain<T> {
         Drain { iter: self.data.drain() }
@@ -623,7 +623,7 @@ impl<T> DoubleEndedIterator for IntoIter<T> {
 impl<T> ExactSizeIterator for IntoIter<T> {}
 
 /// An iterator that drains a `BinaryHeap`.
-#[unstable(feature = "unnamed_feature", reason = "recent addition")]
+#[unstable(feature = "collections", reason = "recent addition")]
 pub struct Drain<'a, T: 'a> {
     iter: vec::Drain<'a, T>,
 }