Because of the fact that t.Unix() family of methods do not
contain the monotonic time, there is no guarantee that
consecutive methods will increase in time.
This is more of a best effort to double the time slept,
but in reality there is no way to control this unless
you specifically control your servers, which is hard to achieve
in a CI environment.
https://mattermost.atlassian.net/browse/MM-43848
```release-note
NONE
```
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