2016-08-11 17:19:34,617 INFO Using config files '['./DistUpgrade.cfg.trusty']'
2016-08-11 17:19:34,618 INFO uname information: 'Linux box 3.13.0-93-generic #140-Ubuntu SMP Mon Jul 18 21:21:05 UTC 2016 x86_64'
2016-08-11 17:19:35,589 INFO apt version: '1.0.1ubuntu2.14'
2016-08-11 17:19:35,589 INFO python version: '3.4.3 (default, Oct 14 2015, 20:28:29) 
[GCC 4.8.4]'
2016-08-11 17:19:35,595 INFO release-upgrader version '16.04.15' started
2016-08-11 17:19:35,599 INFO locale: 'hu_HU' 'UTF-8'
2016-08-11 17:19:35,709 DEBUG Using 'DistUpgradeViewText' view
2016-08-11 17:19:35,826 DEBUG aufsOptionsAndEnvironmentSetup()
2016-08-11 17:19:35,829 DEBUG using '/tmp/upgrade-rw-8ocxmykr' as aufs_rw_dir
2016-08-11 17:19:35,829 DEBUG using '/tmp/upgrade-chroot-knoemnn9' as aufs chroot dir
2016-08-11 17:19:35,830 DEBUG enable dpkg --force-overwrite
2016-08-11 17:19:35,895 DEBUG creating statefile: '/var/log/dist-upgrade/apt-clone_system_state.tar.gz'
2016-08-11 17:19:44,585 DEBUG lsb-release: 'trusty'
2016-08-11 17:19:44,586 DEBUG _pythonSymlinkCheck run
2016-08-11 17:19:44,586 DEBUG openCache()
2016-08-11 17:19:44,587 DEBUG No such plugin directory: ./plugins
2016-08-11 17:19:44,587 DEBUG plugins for condition 'PreCacheOpen' are '[]'
2016-08-11 17:19:44,587 DEBUG plugins for condition 'xenialPreCacheOpen' are '[]'
2016-08-11 17:19:44,587 DEBUG plugins for condition 'from_trustyPreCacheOpen' are '[]'
2016-08-11 17:19:44,587 DEBUG quirks: running PreCacheOpen
2016-08-11 17:19:44,587 DEBUG running Quirks.PreCacheOpen
2016-08-11 17:19:45,334 ERROR not handled exception:
Traceback (most recent call last):

  File "/usr/lib/python3/dist-packages/apt/progress/text.py", line 77, in update
    def update(self, percent=None):

KeyboardInterrupt

2016-08-11 17:19:45,334 DEBUG running apport_crash()
2016-08-11 17:19:46,123 DEBUG enabling apt cron job