Thanks Daniel for following up with your findings. As the conclusion here is "not a bug in Ubuntu" I'm marking this report as Invalid. Thanks again for taking the time to file it in the first place.
** Changed in: nginx (Ubuntu) Status: Incomplete => Invalid -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1887400 Title: package libnginx-mod-http-upstream-fair (not installed) failed to install/upgrade: installed libnginx-mod-http-upstream-fair package post-installation script subprocess returned error exit status 1 To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/nginx/+bug/1887400/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs