Code review comment for autopkgtest-cloud:more-fail-strings

It's a fair comment, I guess 'rules extract failed' is kind of a suspect thing to see and maybe there's some more context beforehand.

Perhaps we can see a full log of a failure - is there a link handy (probably not if there's a tmpfail loop)? Or if you're able to run it manually *not* with --shell-fail, save that output and share the log.