Sorry, I forgot to try a last time before reporting. This was my build history in buster when I prepared the bug report:
Status: successful nova_17.0.3-13_amd64-20180813T225947Z Status: successful nova_17.0.3-13_amd64-20180825T040039Z Status: failed nova_18.0.3-4_amd64-20181220T062036.211Z Status: failed nova_18.0.3-4_amd64-20181225T213929.571Z Status: failed nova_18.0.3-4_amd64-20181225T214840.895Z Status: failed nova_18.0.3-4_amd64-20181225T215238.961Z The fixed "migrate" package entered testing on 2018-12-26, which explains that you could not reproduce it anymore. This is why I always say "please reassign and use affects if the bug is in another package" in my bug reports. So, mystery solved, but please Cc: me if you have something interesting to say about the bugs I report. I missed both your "Can't reproduce" message and your "Bug in python3-migrate 0.11.0-4 release instead of -5?" message because you just sent them to [email protected], which is not forwarded to the bug submitter. Thanks.

