Ok, looking a bit more into this. Turns out there is a difference in the s390x hardware between the LP builders and canonistack s390x VMs:
-features : esan3 zarch stfle msa ldisp eimm dfp edat etf3eh highgprs te vx +features : esan3 zarch stfle msa ldisp eimm dfp edat etf3eh highgprs te vx vxd vxe gs vxe2 vxp sort dflt (+ is LP/PPAs) These optimizations probably do not kick in in the canonistack VMs, where I was trying to reproduce the problem, and failing to do so. -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/2083700 Title: rsyslog FTBFS (s390x only) against zlib 1:1.3.dfsg+really1.3.1-1ubuntu1 To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/rsyslog/+bug/2083700/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs