https://bugzilla.redhat.com/show_bug.cgi?id=835313
--- Comment #3 from Daiki Ueno dueno@redhat.com --- (In reply to comment #2)
IBus: Xlib.error.DisplayConnectionError: Can't connect to display "foobar:0.0": [Errno 113] No route to host
So, you set the invalid value to $DISPLAY on the remote server. I think this is a user error.