Parsing https://gerrit.wikimedia.org/r/#/c/mediawiki/extensions/Wikisource/+/485486/ made ReleaseTaggerBot crash. Details:
2019-11-01 14:01:37,549 - forrestbot - INFO - Processing https://gerrit.wikimedia.org/r/485486 2019-11-01 14:01:37,550 - root - DEBUG - Requesting 'master' branches for mediawiki/extensions/Wikisource 2019-11-01 14:01:37,552 - requests.packages.urllib3.connectionpool - INFO - Starting new HTTPS connection (1): gerrit.wikimedia.org 2019-11-01 14:01:37,696 - forrestbot - ERROR - Releasetaggerbot crashed while processing messages Traceback (most recent call last): File "/data/project/forrestbot/forrestbot/forrestbot.py", line 209, in <module> main() File "/data/project/forrestbot/forrestbot/forrestbot.py", line 154, in main action = process_mail(mail) File "/data/project/forrestbot/forrestbot/forrestbot.py", line 116, in process_mail taskbranches = get_master_branches(proj) File "/data/project/forrestbot/forrestbot/forrestbot.py", line 46, in get_master_branches key=wmf_number)[-1] IndexError: list index out of range