Exception when channel is archived and standup has been scheduled to run in it

[com4]

2017-07-11 12:03:42,573 [DEBUG] SlackWS: on_channel_archive does not exist for message: {'type': 'channel_archive', 'channel': 'C583J7PNU', 'is_moved': 0, 'user': 'U0286NL58', 'event_ts': '1499796222.215433'}                                                                                              
2017-07-11 13:06:32,283 [DEBUG] SlackWS: on_channel_created does not exist for message: {'type': 'channel_created', 'channel': {'name': 'subs_and_licenses', 'name_normalized': 'subs_and_licenses', 'is_channel': True, 'created': 1499799992, 'creator': 'U0GJWKPDF', 'is_org_shared': False, 'id': 'C66LVD2V7', 'is_shared': False}, 'event_ts': '1499799992.356751'}
2017-07-11 13:47:47,538 [DEBUG] SlackWS: on_member_joined_channel does not exist for message: {'type': 'member_joined_channel', 'event_ts': '1499802467.131766', 'user': 'U1W92ACMP', 'channel': 'C64PPBZJ6', 'ts': '1499802467.131766', 'channel_type': 'C', 'inviter': 'U06LRM6AZ'}
2017-07-11 13:48:10,008 [ERROR] asyncio: Task exception was never retrieved
future: <Task finished coro=<Bot.process_message() done, defined at ./bin/dbolla:81> exception=KeyError('C64PPBZJ6',)>
Traceback (most recent call last):
  File "/usr/lib/python3.5/asyncio/tasks.py", line 239, in _step
    result = coro.send(None)
  File "./bin/dbolla", line 86, in process_message
    message = await connection.read()
  File "/home/com4/warmachine-ng/warmachine/connections/slack.py", line 100, in read                                                                                                                                                                                                                          
    return await self.process_message(message)
  File "/home/com4/warmachine-ng/warmachine/connections/slack.py", line 228, in process_message
    channel = '#{}'.format(self.channel_map[msg['channel']]['name'])
KeyError: 'C64PPBZJ6'

I think this was caused when someone created a channel that had a scheduled standup pending