Comment 5 for bug 974617

The error happened again, even with 5 tries spread across .5 seconds between each. See line 7419 and previous of .

(Additionally the format string uses a Python 2.7 feature, leading to the error seen in the traceback. "bouncer did not come up after {} attempts.".format(retries) needs to be something like "bouncer did not come up after {count} attempts.".format(count=retries) in 2.6.)