What does this MR do?
I was not able to reproduce the transient failure locally but I believe it happens when run in combination with other specs.
Basically querying for
MergeRequest.order(...).first is a recipe for unpredictable specs since a merge request could be created for another project in the meantime, and we'd assert against a merge request IID that doesn't belong to the current project. I'm not 100% how this could happen since specs should always start with a clean state, but