From 0da2d85cf9ef7711889b4a30ea399eea439d4e13 Mon Sep 17 00:00:00 2001
From: tison <wander4096@gmail.com>
Date: Thu, 30 Dec 2021 09:57:08 +0800
Subject: [PATCH] remove redundant `Error` impl

Signed-off-by: tison <wander4096@gmail.com>
---
 timely/src/scheduling/activate.rs | 6 +-----
 1 file changed, 1 insertion(+), 5 deletions(-)

diff --git a/timely/src/scheduling/activate.rs b/timely/src/scheduling/activate.rs
index b4f7ff412..79b69d24d 100644
--- a/timely/src/scheduling/activate.rs
+++ b/timely/src/scheduling/activate.rs
@@ -291,11 +291,7 @@ impl std::fmt::Display for SyncActivationError {
     }
 }
 
-impl std::error::Error for SyncActivationError {
-    fn source(&self) -> Option<&(dyn std::error::Error + 'static)> {
-        None
-    }
-}
+impl std::error::Error for SyncActivationError {}
 
 /// A wrapper that unparks on drop.
 #[derive(Debug)]