Attaching logs from /var/log/dist-upgrade on broken system. apt.log seems to indicate problems with broken dependencies and increasingly desperate attempts to find solutions. Things have also gone badly wrong in term.log, as the file ends part-way through a line with 130 null bytes.
-- sudo update-manager -c -d crashes during xubuntu upgrade https://launchpad.net/bugs/68027 -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs