diff -r 39f7d4ee8bcd -r e826fe7a08c7 mercurial/localrepo.py
--- a/mercurial/localrepo.py	Fri Mar 30 18:53:17 2018 -0700
+++ b/mercurial/localrepo.py	Fri Mar 30 18:57:13 2018 -0700
@@ -162,15 +162,11 @@
         if caps is None:
             caps = moderncaps.copy()
         self._repo = repo.filtered('served')
-        self._ui = repo.ui
+        self.ui = repo.ui
         self._caps = repo._restrictcapabilities(caps)
 
     # Begin of _basepeer interface.
 
-    @util.propertycache
-    def ui(self):
-        return self._ui
-
     def url(self):
         return self._repo.url()