From b5faaf7116d1aec4812b752e45e7312a6a90a2c2 Mon Sep 17 00:00:00 2001
From: Nick Craig-Wood <nick@craig-wood.com>
Date: Thu, 18 Aug 2016 18:56:57 +0100
Subject: [PATCH] Fix double close of abort channel - fixes #592

---
 fs/sync.go | 4 +++-
 1 file changed, 3 insertions(+), 1 deletion(-)

diff --git a/fs/sync.go b/fs/sync.go
index fe12afd9a..07de0d1ff 100644
--- a/fs/sync.go
+++ b/fs/sync.go
@@ -183,7 +183,9 @@ func (s *syncCopyMove) processError(err error) {
 	defer s.errorMu.Unlock()
 	switch {
 	case IsFatalError(err):
-		close(s.abort)
+		if !s.aborting() {
+			close(s.abort)
+		}
 		s.fatalErr = err
 	case IsNoRetryError(err):
 		s.noRetryErr = err