Comment 1 for bug 2012667

In case any other autopkgtest sys admin looks at this bug (like I did!) the best way to clean this up is to kill the tee process which the runner is waiting on e.g.:

  ps aux | grep "runner.*jool"

Confirm that $PID is waiting indefinitely - on tee by the way. Then:

  kill $(pstree -p $PID | grep tee | sed -E 's/.*\((.*)\)/\1/')

The runner process will then exit as an underlying process was killed and the test will be restarted as there were no results.