-// NOTE(stage0): remove impl after a snapshot
-#[cfg(stage0)]
-#[stable]
-impl<K: Hash<S> + Eq, Sized? Q, V, S, H: Hasher<S>> IndexMut<Q, V> for HashMap<K, V, H>
- where Q: BorrowFrom<K> + Hash<S> + Eq
-{
- #[inline]
- fn index_mut<'a>(&'a mut self, index: &Q) -> &'a mut V {
- self.get_mut(index).expect("no entry found for key")
- }
-}
-
-#[cfg(not(stage0))] // NOTE(stage0): remove cfg after a snapshot