Description of problem:

Upgrading from Fedora 21 to Fedora 22 (pre-release) does not finish, stalls after "systemd-coredump: can not log coredump: connection refused" being logged by the kernel

Version-Release number of selected component (if applicable):


How reproducible:

Reproduced successfully on a laptop and on a PC running Fedora 21.

Steps to Reproduce:
1. Use `sudo fedup --network 22 --instrepo https://kojipkgs.fedoraproject.org/mash/branched-20150308/22/x86_64/os` to prepare the update
2. Reboot to Fedora Upgrade
3. Wait for the update finish

Actual results:

Upgrade stalls with "systemd-coredump: can not log coredump: connection refused" being logged by the kernel, without any sign of further activity

Expected results:

Upgrade finishes successfully, or at least there's some indication of progress.

Additional info:

Other virtual terminals (Ctrl+Alt+F2 ... ) can be switched to, but I'm unable to type anything. Two prompt texts seem to appear one after the another, one 'root@localhost' and another related to the upgrade/fedup, can't remember the exact prompt.