This came up in the nova meeting today, I've opened a bug  for it.
Since this isn't maintained by infra we don't have log indexing so I
can't use logstash to see how pervasive it us, but multiple people are
reporting the same thing in IRC.
Who is maintaining the nova-docker CI and can look at this?
It also looks like the log format for the nova-docker CI is a bit weird,
can that be cleaned up to be more consistent with other CI log results?
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