diff -r 59e4a7781a36 -r ae79cf6f9c82 mercurial/wireproto.py
--- a/mercurial/wireproto.py	Tue Feb 06 11:31:25 2018 -0800
+++ b/mercurial/wireproto.py	Wed Jan 31 10:06:39 2018 -0800
@@ -914,11 +914,8 @@
 
         proto.redirect()
 
-        try:
-            r = repo.pushkey(encoding.tolocal(namespace), encoding.tolocal(key),
-                             encoding.tolocal(old), new) or False
-        except error.Abort:
-            r = False
+        r = repo.pushkey(encoding.tolocal(namespace), encoding.tolocal(key),
+                         encoding.tolocal(old), new) or False
 
         output = proto.restore()