During one of my PRs I had noticed a strange time for the patch on Github. See the attached screenshot for what I mean. The text-version of this is that Evergreen reported the patch as having taken:
Which is a negative number and quite a large one, so it doesn't make sense. This was triggered by this patch. The Evergreen patch here displays a different time as well:
It is worth noting that I unscheduled two tasks on this patch by hand, so maybe that had something to do with it.