wait, I think you can disregard this bug. the upgrade was being run in bash shell launched from screen, and screen had been launched by a userid that had been removed from the system (but screen was kept running)
After submitting this report, I see this as final output from upgrade process:: Setting up byobu (2.38-0ubuntu3) ... chown: invalid user: `bkc2' -- package byobu 2.38-0ubuntu3 failed to install/upgrade: https://bugs.launchpad.net/bugs/481113 You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
