I was just about to report the absence of a message in this case which
is from a user's perspective kind of ambiguous since the absence of any
output does not clarify whether the check ran without problems and
everything is fine (aka: no unsupported packages installed) or whether
there's a bug/issue with the check itself.
While I understand Karl O. Pinc's reasoning, I take it that the case I
depicted above is quite valid as well. Maybe there should be a
silent-mode-switch option which could then be used for the cron-friendly
case while the default would print some message here (as in: No
unsupported packages detected.)
Regards,
Stefan