From cd14a323f42cf57695e713a4f4fd00fddc10efd5 Mon Sep 17 00:00:00 2001
From: "Stephen M. Coakley" <me@stephencoakley.com>
Date: Tue, 4 Apr 2017 10:44:57 -0500
Subject: [PATCH] Use derived Debug for ThreadId

---
 src/libstd/thread/mod.rs | 9 +--------
 1 file changed, 1 insertion(+), 8 deletions(-)

diff --git a/src/libstd/thread/mod.rs b/src/libstd/thread/mod.rs
index 21f9757ad116..9116f5417365 100644
--- a/src/libstd/thread/mod.rs
+++ b/src/libstd/thread/mod.rs
@@ -670,7 +670,7 @@ pub fn park_timeout(dur: Duration) {
 /// assert!(thread::current().id() != other_thread_id);
 /// ```
 #[unstable(feature = "thread_id", issue = "21507")]
-#[derive(Clone, Copy, Eq, PartialEq, Hash)]
+#[derive(Eq, PartialEq, Clone, Copy, Hash, Debug)]
 pub struct ThreadId(u64);
 
 impl ThreadId {
@@ -699,13 +699,6 @@ impl ThreadId {
     }
 }
 
-#[unstable(feature = "thread_id", issue = "21507")]
-impl fmt::Debug for ThreadId {
-    fn fmt(&self, f: &mut fmt::Formatter) -> fmt::Result {
-        f.pad("ThreadId { .. }")
-    }
-}
-
 ////////////////////////////////////////////////////////////////////////////////
 // Thread
 ////////////////////////////////////////////////////////////////////////////////