Bug#936055: t/unthreaded.t test failing

[Matthias Klose]

Package: src:libapp-stacktrace-perl
Version: 0.09-3
Severity: important
Tags: upstream
Forwarded: https://rt.cpan.org/Public/Bug/Display.html?id=121262

I see you already forwarded this upstream.  Filing the issue, because I also see 
that in Ubuntu at
https://objectstorage.prodstack4-5.canonical.com/v1/AUTH_77e2ada1e7a84929a74ba3b87153c0ac/autopkgtest-eoan/eoan/amd64/liba/libapp-stacktrace-perl/20190828_222752_2da85@/log.gz

Is there a way to exit with a status for unreliable tests, that gets ignored by 
the autopkg tests?