2016-11-12 20:10:57,112 INFO Using config files '['./DistUpgrade.cfg']'
2016-11-12 20:10:57,112 INFO uname information: 'Linux goliath 4.4.0-47-generic #68-Ubuntu SMP Wed Oct 26 19:39:52 UTC 2016 x86_64'
2016-11-12 20:10:57,600 INFO apt version: '1.2.12~ubuntu16.04.1'
2016-11-12 20:10:57,600 INFO python version: '3.5.2 (default, Sep 10 2016, 08:21:44) 
[GCC 5.4.0 20160609]'
2016-11-12 20:10:57,604 INFO release-upgrader version '16.10.8' started
2016-11-12 20:10:57,606 INFO locale: 'en_US' 'UTF-8'
2016-11-12 20:10:57,789 DEBUG Using 'DistUpgradeViewText' view
2016-11-12 20:10:57,850 DEBUG aufsOptionsAndEnvironmentSetup()
2016-11-12 20:10:57,851 DEBUG using '/tmp/upgrade-rw-c3_07quv' as aufs_rw_dir
2016-11-12 20:10:57,851 DEBUG using '/tmp/upgrade-chroot-r2rbtyyu' as aufs chroot dir
2016-11-12 20:10:57,851 DEBUG enable dpkg --force-overwrite
2016-11-12 20:10:57,888 DEBUG creating statefile: '/var/log/dist-upgrade/apt-clone_system_state.tar.gz'
2016-11-12 20:11:02,419 DEBUG lsb-release: 'xenial'
2016-11-12 20:11:02,420 DEBUG _pythonSymlinkCheck run
2016-11-12 20:11:02,421 DEBUG openCache()
2016-11-12 20:11:02,421 DEBUG No such plugin directory: ./plugins
2016-11-12 20:11:02,421 DEBUG plugins for condition 'PreCacheOpen' are '[]'
2016-11-12 20:11:02,421 DEBUG plugins for condition 'yakketyPreCacheOpen' are '[]'
2016-11-12 20:11:02,421 DEBUG plugins for condition 'from_xenialPreCacheOpen' are '[]'
2016-11-12 20:11:02,421 DEBUG quirks: running PreCacheOpen
2016-11-12 20:11:02,421 DEBUG running Quirks.PreCacheOpen
2016-11-12 20:11:03,281 DEBUG /openCache(), new cache size 83307
2016-11-12 20:11:03,282 DEBUG need_server_mode(): run in 'desktop' mode, (because of pkg 'lubuntu-core')
2016-11-12 20:11:03,282 DEBUG checkViewDepends()
2016-11-12 20:11:03,283 DEBUG running doUpdate() (showErrors=False)
2016-11-12 20:11:07,360 DEBUG openCache()
2016-11-12 20:11:10,565 DEBUG /openCache(), new cache size 83307
2016-11-12 20:11:10,565 DEBUG doPostInitialUpdate
2016-11-12 20:11:10,566 DEBUG plugins for condition 'PostInitialUpdate' are '[]'
2016-11-12 20:11:10,566 DEBUG plugins for condition 'yakketyPostInitialUpdate' are '[]'
2016-11-12 20:11:10,566 DEBUG plugins for condition 'from_xenialPostInitialUpdate' are '[]'
2016-11-12 20:11:13,863 DEBUG MetaPkgs: lubuntu-core
2016-11-12 20:11:18,256 DEBUG Foreign: 
2016-11-12 20:11:18,257 DEBUG Obsolete: 
2016-11-12 20:11:18,257 DEBUG updateSourcesList()
2016-11-12 20:11:18,364 DEBUG rewriteSourcesList() with mirror_check
2016-11-12 20:11:18,364 DEBUG ['ubuntu-minimal', 'ubuntu-standard']
2016-11-12 20:11:18,364 DEBUG Checking pkg: ubuntu-minimal
2016-11-12 20:11:18,366 DEBUG Checking pkg: ubuntu-standard
2016-11-12 20:11:18,368 DEBUG examining: 'deb http://pubmirrors.dal.corespace.com/ubuntu/ xenial main universe restricted multiverse'
2016-11-12 20:11:18,369 DEBUG entry 'deb http://pubmirrors.dal.corespace.com/ubuntu/ yakkety main universe restricted multiverse' updated to new dist
2016-11-12 20:11:18,369 DEBUG examining: 'deb http://pubmirrors.dal.corespace.com/ubuntu/ xenial-updates universe main restricted multiverse'
2016-11-12 20:11:18,370 DEBUG entry 'deb http://pubmirrors.dal.corespace.com/ubuntu/ yakkety-updates universe main restricted multiverse' updated to new dist
2016-11-12 20:11:18,370 DEBUG examining: 'deb http://security.ubuntu.com/ubuntu/ xenial-security universe main restricted multiverse'
2016-11-12 20:11:18,371 DEBUG entry 'deb http://security.ubuntu.com/ubuntu/ yakkety-security universe main restricted multiverse' updated to new dist
2016-11-12 20:11:18,373 DEBUG running doUpdate() (showErrors=True)
2016-11-12 20:11:32,626 DEBUG openCache()
2016-11-12 20:11:32,626 DEBUG failed to SystemUnLock() (E:Not locked) 
2016-11-12 20:11:33,511 DEBUG /openCache(), new cache size 84925
2016-11-12 20:11:33,512 DEBUG need_server_mode(): run in 'desktop' mode, (because of pkg 'lubuntu-core')
2016-11-12 20:11:36,841 ERROR Dist-upgrade failed: 'E:Error, pkgProblemResolver::Resolve generated breaks, this may be caused by held packages.'
2016-11-12 20:11:36,843 DEBUG abort called
2016-11-12 20:11:36,845 DEBUG openCache()
2016-11-12 20:11:36,845 DEBUG failed to SystemUnLock() (E:Not locked) 
2016-11-12 20:11:39,844 DEBUG /openCache(), new cache size 83307