Two checks could report success without having verified anything. The version
check read the last line of output without looking at the exit status, so an
import failure printed a traceback whose last line was accepted as a version.
The shutdown check waited for the process to reach its watch loop but carried
on regardless, so if the container had already exited it measured the shutdown
of something that was not running.
The version check now requires a zero exit and a version shaped like one. The
shutdown check fails and prints the container log when the watch loop is never
reached. Both were confirmed against an image with a deliberately removed
module: each reports a failure where it previously reported success.
Maxim Shulga
f535e8b7d0