diff -r 970967e0a917 -r fda0867cfe03 mercurial/localrepo.py
--- a/mercurial/localrepo.py	Fri Aug 04 15:49:36 2017 -0400
+++ b/mercurial/localrepo.py	Sun Aug 06 17:44:56 2017 -0700
@@ -237,9 +237,6 @@
         except error.PushRaced as exc:
             raise error.ResponseError(_('push failed:'), str(exc))
 
-    def lock(self):
-        return self._repo.lock()
-
     def pushkey(self, namespace, key, old, new):
         return self._repo.pushkey(namespace, key, old, new)