From 3dcdb8a83e953bfa033349e07c0f62b4230ea514 Mon Sep 17 00:00:00 2001
From: Ralf Jung <post@ralfj.de>
Date: Mon, 6 Aug 2018 15:52:27 +0200
Subject: [PATCH] remove unnecessary CoerceUnsized impl

---
 src/libcore/mem.rs | 3 ---
 1 file changed, 3 deletions(-)

diff --git a/src/libcore/mem.rs b/src/libcore/mem.rs
index 1eec4def1bbf..9efac3e8d4cb 100644
--- a/src/libcore/mem.rs
+++ b/src/libcore/mem.rs
@@ -1024,9 +1024,6 @@ impl<T: ?Sized> DerefMut for ManuallyDrop<T> {
     }
 }
 
-#[unstable(feature = "coerce_unsized", issue = "27732")]
-impl<T: CoerceUnsized<U>, U> CoerceUnsized<ManuallyDrop<U>> for ManuallyDrop<T> {}
-
 /// A pinned reference.
 ///
 /// A pinned reference is a lot like a mutable reference, except that it is not