Over in https://bugs.debian.org/858400, i've reported a problem where gpgscm
from 2.1.19 (and the current git head) crashes intermittently on s390x. I've
done some further digging based on the upstream source on zelenka.debian.org, an
s390x debian "porterbox".
I would have included details here but roundup says "too many links", so you'll
have to get the details from the debian BTS, i guess.