--- a/mercurial/dispatch.py Thu Oct 20 23:40:24 2016 +0900 +++ b/mercurial/dispatch.py Thu Oct 20 23:53:36 2016 +0900 @@ -97,7 +97,7 @@ elif req.ui: ferr = req.ui.ferr else: - ferr = sys.stderr + ferr = util.stderr try: if not req.ui: