From 1afa8acca8d9c548da99ef30d3a13c0d086203f3 Mon Sep 17 00:00:00 2001
From: Jake Goulding <jake.goulding@gmail.com>
Date: Sun, 14 Dec 2014 09:48:56 -0500
Subject: [PATCH] Use #[deriving(Copy)] for InvariantLifetime

---
 src/libcore/kinds.rs | 4 +---
 1 file changed, 1 insertion(+), 3 deletions(-)

diff --git a/src/libcore/kinds.rs b/src/libcore/kinds.rs
index 69f65e23389..d31ff81091c 100644
--- a/src/libcore/kinds.rs
+++ b/src/libcore/kinds.rs
@@ -256,11 +256,9 @@ pub mod marker {
     /// and this pointer is itself stored in an inherently mutable
     /// location (such as a `Cell`).
     #[lang="invariant_lifetime"]
-    #[deriving(Clone, PartialEq, Eq, PartialOrd, Ord)]
+    #[deriving(Clone, Copy, PartialEq, Eq, PartialOrd, Ord)]
     pub struct InvariantLifetime<'a>;
 
-    impl<'a> Copy for InvariantLifetime<'a> {}
-
     /// A type which is considered "not sendable", meaning that it cannot
     /// be safely sent between tasks, even if it is owned. This is
     /// typically embedded in other types, such as `Gc`, to ensure that