diff -r f928d53b687c -r 9d6031df42c8 mercurial/exchange.py
--- a/mercurial/exchange.py	Tue May 23 03:29:23 2017 +0900
+++ b/mercurial/exchange.py	Wed May 24 15:25:24 2017 -0700
@@ -2018,7 +2018,7 @@
             except urlerr.httperror as e:
                 ui.warn(_('HTTP error fetching bundle: %s\n') % str(e))
             except urlerr.urlerror as e:
-                ui.warn(_('error fetching bundle: %s\n') % e.reason[1])
+                ui.warn(_('error fetching bundle: %s\n') % e.reason)
 
             return False
         finally: