It appears that the cause of this is that procps reload failed. There is no info in the debug that indicates why it failed, presumably there was something wrong with upstart when dealing with procps. I am marking this bug as incomplete since it needs more info to solve it.
status incomplete -- bye, pabs https://wiki.debian.org/PaulWise -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1451198 Title: package corekeeper 1.5 failed to install/upgrade: subprocess installed post-removal script returned error exit status 1 To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/corekeeper/+bug/1451198/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs