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mercurial/dirstate.py
changeset 31547 ddadb6b0b58e
parent 31507 4d1dd9cf0dca
child 32177 8f1a2b848b52
child 33633 20bac46f7744 
--- a/mercurial/dirstate.py	Tue Mar 21 06:50:28 2017 -0700
+++ b/mercurial/dirstate.py	Tue Mar 21 06:50:28 2017 -0700
@@ -1262,8 +1262,7 @@
 
         backupname = prefix + self._filename + suffix
         assert backupname != filename
-        if self._opener.exists(backupname):
-            self._opener.unlink(backupname)
+        self._opener.tryunlink(backupname)
         # hardlink backup is okay because _writedirstate is always called
         # with an "atomictemp=True" file.
         util.copyfile(self._opener.join(filename),
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