2016-04-29 12:22:43,101 INFO Using config files '['./DistUpgrade.cfg']'
2016-04-29 12:22:43,101 INFO uname information: 'Linux user-desktop 3.19.0-42-generic #48-Ubuntu SMP Thu Dec 17 22:54:45 UTC 2015 x86_64'
2016-04-29 12:22:43,451 INFO apt version: '1.0.9.7ubuntu4.2'
2016-04-29 12:22:43,451 INFO python version: '3.4.3 (default, Mar 26 2015, 22:03:40) 
[GCC 4.9.2]'
2016-04-29 12:22:43,453 INFO release-upgrader version '16.04.14' started
2016-04-29 12:22:43,538 INFO locale: 'en_IN' 'ISO8859-1'
2016-04-29 12:22:45,267 DEBUG Using 'DistUpgradeViewGtk3' view
2016-04-29 12:22:45,301 DEBUG aufsOptionsAndEnvironmentSetup()
2016-04-29 12:22:45,302 DEBUG using '/tmp/upgrade-rw-3sk3kchq' as aufs_rw_dir
2016-04-29 12:22:45,302 DEBUG using '/tmp/upgrade-chroot-0q6amax8' as aufs chroot dir
2016-04-29 12:22:45,302 DEBUG enable dpkg --force-overwrite
2016-04-29 12:22:45,349 DEBUG creating statefile: '/var/log/dist-upgrade/apt-clone_system_state.tar.gz'
2016-04-29 12:22:47,939 DEBUG lsb-release: 'wily'
2016-04-29 12:22:47,940 DEBUG _pythonSymlinkCheck run
2016-04-29 12:22:47,978 DEBUG openCache()
2016-04-29 12:22:48,000 DEBUG No such plugin directory: ./plugins
2016-04-29 12:22:48,000 DEBUG plugins for condition 'PreCacheOpen' are '[]'
2016-04-29 12:22:48,000 DEBUG plugins for condition 'xenialPreCacheOpen' are '[]'
2016-04-29 12:22:48,000 DEBUG plugins for condition 'from_wilyPreCacheOpen' are '[]'
2016-04-29 12:22:48,001 DEBUG quirks: running PreCacheOpen
2016-04-29 12:22:48,001 DEBUG running Quirks.PreCacheOpen
2016-04-29 12:22:48,589 DEBUG /openCache(), new cache size 83199
2016-04-29 12:22:48,589 DEBUG Have broken pkgs, trying to fix them
2016-04-29 12:22:51,314 ERROR self.prepared() failed
2016-04-29 12:22:52,554 DEBUG enabling apt cron job