2013-10-28 12:30:28,989 INFO Using config files '['./DistUpgrade.cfg']'
2013-10-28 12:30:28,989 INFO uname information: 'Linux ubuntu-virtual-machine 3.8.0-33-generic #48~precise1-Ubuntu SMP Thu Oct 24 16:28:06 UTC 2013 x86_64'
2013-10-28 12:30:28,989 INFO apt version: '0.8.16~exp12ubuntu10.15'
2013-10-28 12:30:28,990 INFO release-upgrader version '0.208' started
2013-10-28 12:30:29,074 INFO screen could not be run
2013-10-28 12:30:29,595 DEBUG Using 'DistUpgradeViewText' view
2013-10-28 12:30:29,632 DEBUG aufsOptionsAndEnvironmentSetup()
2013-10-28 12:30:29,632 DEBUG using '/tmp/upgrade-rw-APxQxp' as aufs_rw_dir
2013-10-28 12:30:29,632 DEBUG using '/tmp/upgrade-chroot-9DTvfD' as aufs chroot dir
2013-10-28 12:30:29,632 DEBUG enable dpkg --force-overwrite
2013-10-28 12:30:29,655 DEBUG creating statefile: '/var/log/dist-upgrade/apt-clone_system_state.tar.gz'
2013-10-28 12:30:32,026 DEBUG lsb-release: 'precise'
2013-10-28 12:30:32,026 ERROR Bad upgrade: 'precise' != 'saucy' 
2013-10-28 12:30:32,043 DEBUG enabling apt cron job