2013-10-18 08:00:49,648 INFO Using config files '['./DistUpgrade.cfg']'
2013-10-18 08:00:49,648 INFO uname information: 'Linux larry 3.8.0-31-generic #46-Ubuntu SMP Tue Sep 10 20:03:44 UTC 2013 x86_64'
2013-10-18 08:00:49,648 INFO apt version: '0.9.7.7ubuntu4'
2013-10-18 08:00:49,649 INFO release-upgrader version '0.205' started
2013-10-18 08:00:49,703 INFO screen could not be run
2013-10-18 08:00:50,101 DEBUG Using 'DistUpgradeViewText' view
2013-10-18 08:00:50,178 DEBUG aufsOptionsAndEnvironmentSetup()
2013-10-18 08:00:50,180 DEBUG using '/tmp/upgrade-rw-xNvhA4' as aufs_rw_dir
2013-10-18 08:00:50,180 DEBUG using '/tmp/upgrade-chroot-WM8fw6' as aufs chroot dir
2013-10-18 08:00:50,181 DEBUG enable dpkg --force-overwrite
2013-10-18 08:00:50,211 DEBUG creating statefile: '/var/log/dist-upgrade/apt-clone_system_state.tar.gz'
2013-10-18 08:00:54,324 ERROR not handled exception:
Traceback (most recent call last):

  File "/tmp/ubuntu-release-upgrader-s4kp5h/saucy", line 10, in <module>
    sys.exit(main())

  File "/tmp/ubuntu-release-upgrader-s4kp5h/DistUpgrade/DistUpgradeMain.py", line 240, in main
    save_system_state(logdir)

  File "/tmp/ubuntu-release-upgrader-s4kp5h/DistUpgrade/DistUpgradeMain.py", line 133, in save_system_state
    scrub_sources=True)

  File "/tmp/ubuntu-release-upgrader-s4kp5h/DistUpgrade/apt_clone.py", line 149, in save_state
    self._write_state_sources_list(tar, scrub_sources)

  File "/tmp/ubuntu-release-upgrader-s4kp5h/DistUpgrade/apt_clone.py", line 241, in _write_state_sources_list
    "./etc/apt/sources.list.d/"+source)

  File "/tmp/ubuntu-release-upgrader-s4kp5h/DistUpgrade/apt_clone.py", line 246, in _add_file_to_tar_with_password_check
    for line in f.readlines():

  File "/usr/lib/python2.7/codecs.py", line 296, in decode
    (result, consumed) = self._buffer_decode(data, self.errors, final)

UnicodeDecodeError: 'utf8' codec can't decode byte 0x8b in position 1: invalid start byte

2013-10-18 08:00:54,326 DEBUG enabling apt cron job