Timeout while fetching a message from RTM, didn't retry

[jvperrin]

This appeared in the logs today, and a single message was dropped from Slack -> IRC:

2020-01-28T09:05:39.283803-08:00 deployment-85b449654d-cx6sz:  2020-01-28 09:05:39-0800 [-] 'Retrieving message from Slack RTM timed out'

Presumably it didn't retry, as the message didn't go through, so having some kind of retry on this, or a message delivered to IRC/Slack letting people know that a message was dropped would be useful.