--- a/hgext/chgserver.py	Sat May 21 15:12:19 2016 +0900
+++ b/hgext/chgserver.py	Sat May 21 15:18:23 2016 +0900
@@ -353,6 +353,7 @@
             self.capabilities['validate'] = chgcmdserver.validate
 
     def cleanup(self):
+        super(chgcmdserver, self).cleanup()
         # dispatch._runcatch() does not flush outputs if exception is not
         # handled by dispatch._dispatch()
         self.ui.flush()