2016-05-01 10:05:22,054 INFO Using config files '['./DistUpgrade.cfg.trusty']'
2016-05-01 10:05:22,055 INFO uname information: 'Linux ubuntu 3.16.0-62-generic #83~14.04.1-Ubuntu SMP Fri Feb 26 22:52:39 UTC 2016 x86_64'
2016-05-01 10:05:22,474 INFO apt version: '1.0.1ubuntu2.13'
2016-05-01 10:05:22,474 INFO python version: '3.4.3 (default, Oct 14 2015, 20:28:29) 
[GCC 4.8.4]'
2016-05-01 10:05:22,477 INFO release-upgrader version '16.04.14' started
2016-05-01 10:05:22,566 INFO locale: 'en_ZA' 'UTF-8'
2016-05-01 10:05:22,775 DEBUG Using 'DistUpgradeViewGtk3' view
2016-05-01 10:05:22,820 DEBUG aufsOptionsAndEnvironmentSetup()
2016-05-01 10:05:22,821 DEBUG using '/tmp/upgrade-rw-nqtjddjx' as aufs_rw_dir
2016-05-01 10:05:22,821 DEBUG using '/tmp/upgrade-chroot-78_5gp7o' as aufs chroot dir
2016-05-01 10:05:22,822 DEBUG enable dpkg --force-overwrite
2016-05-01 10:05:22,869 DEBUG creating statefile: '/var/log/dist-upgrade/apt-clone_system_state.tar.gz'
2016-05-01 10:05:25,483 DEBUG lsb-release: 'trusty'
2016-05-01 10:05:25,484 DEBUG _pythonSymlinkCheck run
2016-05-01 10:05:25,508 DEBUG openCache()
2016-05-01 10:05:25,508 DEBUG No such plugin directory: ./plugins
2016-05-01 10:05:25,508 DEBUG plugins for condition 'PreCacheOpen' are '[]'
2016-05-01 10:05:25,508 DEBUG plugins for condition 'xenialPreCacheOpen' are '[]'
2016-05-01 10:05:25,508 DEBUG plugins for condition 'from_trustyPreCacheOpen' are '[]'
2016-05-01 10:05:25,508 DEBUG quirks: running PreCacheOpen
2016-05-01 10:05:25,508 DEBUG running Quirks.PreCacheOpen
2016-05-01 10:05:26,211 DEBUG /openCache(), new cache size 74035
2016-05-01 10:05:26,211 DEBUG need_server_mode(): run in 'desktop' mode, (because of key deps for 'xubuntu-core')
2016-05-01 10:05:26,211 DEBUG checkViewDepends()
2016-05-01 10:05:26,211 DEBUG depends: 'apt (>= 1.0.1ubuntu2.13)'
2016-05-01 10:05:26,212 DEBUG checking: '[('apt', '1.0.1ubuntu2.13', '>=')]' 
2016-05-01 10:05:26,212 DEBUG depends: 'dpkg (>= 1.17.5ubuntu5.6)'
2016-05-01 10:05:26,212 DEBUG checking: '[('dpkg', '1.17.5ubuntu5.6', '>=')]' 
2016-05-01 10:05:26,212 DEBUG running doUpdate() (showErrors=False)
2016-05-01 10:05:37,912 DEBUG openCache()
2016-05-01 10:05:38,620 DEBUG /openCache(), new cache size 74035
2016-05-01 10:05:38,621 DEBUG doPostInitialUpdate
2016-05-01 10:05:38,621 DEBUG plugins for condition 'PostInitialUpdate' are '[]'
2016-05-01 10:05:38,621 DEBUG plugins for condition 'xenialPostInitialUpdate' are '[]'
2016-05-01 10:05:38,621 DEBUG plugins for condition 'from_trustyPostInitialUpdate' are '[]'
2016-05-01 10:05:40,837 DEBUG MetaPkgs: xubuntu-desktop
2016-05-01 10:05:43,324 DEBUG Foreign: caffeine libdrm-amdgpu1 libdrm-amdgpu1:i386 libdrm-intel1 libdrm-intel1:i386 libdrm-nouveau2 libdrm-nouveau2:i386 libdrm-radeon1 libdrm-radeon1:i386 libdrm2 libdrm2:i386 libegl1-mesa libegl1-mesa-drivers libgbm1 libgl1-mesa-dri libgl1-mesa-dri:i386 libgl1-mesa-glx libgl1-mesa-glx:i386 libglamor0 libglapi-mesa libglapi-mesa:i386 libgles2-mesa libllvm3.8 libllvm3.8:i386 libva-glx1 libva-x11-1 libva1 libvdpau1 libvorbis0a libvorbisenc2 libvorbisfile3 libwayland-egl1-mesa libxatracker2 linux-firmware mesa-utils mesa-vdpau-drivers unetbootin unetbootin-translations va-driver-all vdpau-driver-all xserver-xorg-video-ati xserver-xorg-video-glamoregl xserver-xorg-video-intel xserver-xorg-video-nouveau xserver-xorg-video-radeon
2016-05-01 10:05:43,324 DEBUG Obsolete: google-chrome-stable sixemu virtualbox-4.3
2016-05-01 10:05:43,325 DEBUG updateSourcesList()
2016-05-01 10:05:43,495 DEBUG rewriteSourcesList() with mirror_check
2016-05-01 10:05:43,495 DEBUG ['ubuntu-minimal', 'ubuntu-standard']
2016-05-01 10:05:43,495 DEBUG Checking pkg: ubuntu-minimal
2016-05-01 10:05:43,497 DEBUG Checking pkg: ubuntu-standard
2016-05-01 10:05:43,499 DEBUG examining: 'deb http://archive.ubuntu.com/ubuntu trusty restricted main'
2016-05-01 10:05:43,499 DEBUG entry 'deb http://archive.ubuntu.com/ubuntu xenial restricted main' updated to new dist
2016-05-01 10:05:43,499 DEBUG examining: 'deb-src http://archive.ubuntu.com/ubuntu trusty restricted main'
2016-05-01 10:05:43,499 DEBUG entry 'deb-src http://archive.ubuntu.com/ubuntu xenial restricted main' updated to new dist
2016-05-01 10:05:43,499 DEBUG examining: 'deb http://archive.ubuntu.com/ubuntu trusty universe'
2016-05-01 10:05:43,499 DEBUG entry 'deb http://archive.ubuntu.com/ubuntu xenial universe' updated to new dist
2016-05-01 10:05:43,500 DEBUG examining: 'deb-src http://archive.ubuntu.com/ubuntu trusty universe'
2016-05-01 10:05:43,500 DEBUG entry 'deb-src http://archive.ubuntu.com/ubuntu xenial universe' updated to new dist
2016-05-01 10:05:43,500 DEBUG examining: 'deb http://archive.ubuntu.com/ubuntu trusty multiverse'
2016-05-01 10:05:43,500 DEBUG entry 'deb http://archive.ubuntu.com/ubuntu xenial multiverse' updated to new dist
2016-05-01 10:05:43,500 DEBUG examining: 'deb-src http://archive.ubuntu.com/ubuntu trusty multiverse'
2016-05-01 10:05:43,500 DEBUG entry 'deb-src http://archive.ubuntu.com/ubuntu xenial multiverse' updated to new dist
2016-05-01 10:05:43,501 DEBUG examining: 'deb http://archive.ubuntu.com/ubuntu trusty-security restricted main'
2016-05-01 10:05:43,501 DEBUG entry 'deb http://archive.ubuntu.com/ubuntu xenial-security restricted main' updated to new dist
2016-05-01 10:05:43,501 DEBUG examining: 'deb-src http://archive.ubuntu.com/ubuntu trusty-security restricted main'
2016-05-01 10:05:43,501 DEBUG entry 'deb-src http://archive.ubuntu.com/ubuntu xenial-security restricted main' updated to new dist
2016-05-01 10:05:43,501 DEBUG examining: 'deb http://archive.ubuntu.com/ubuntu trusty-security universe'
2016-05-01 10:05:43,501 DEBUG entry 'deb http://archive.ubuntu.com/ubuntu xenial-security universe' updated to new dist
2016-05-01 10:05:43,502 DEBUG examining: 'deb-src http://archive.ubuntu.com/ubuntu trusty-security universe'
2016-05-01 10:05:43,502 DEBUG entry 'deb-src http://archive.ubuntu.com/ubuntu xenial-security universe' updated to new dist
2016-05-01 10:05:43,502 DEBUG examining: 'deb http://archive.ubuntu.com/ubuntu trusty-security multiverse'
2016-05-01 10:05:43,502 DEBUG entry 'deb http://archive.ubuntu.com/ubuntu xenial-security multiverse' updated to new dist
2016-05-01 10:05:43,502 DEBUG examining: 'deb-src http://archive.ubuntu.com/ubuntu trusty-security multiverse'
2016-05-01 10:05:43,502 DEBUG entry 'deb-src http://archive.ubuntu.com/ubuntu xenial-security multiverse' updated to new dist
2016-05-01 10:05:43,502 DEBUG examining: 'deb http://archive.canonical.com/ubuntu trusty partner'
2016-05-01 10:05:43,503 DEBUG entry 'deb http://archive.canonical.com/ubuntu xenial partner' updated to new dist
2016-05-01 10:05:43,503 DEBUG examining: 'deb http://archive.ubuntu.com/ubuntu trusty-updates restricted multiverse universe main'
2016-05-01 10:05:43,503 DEBUG entry 'deb http://archive.ubuntu.com/ubuntu xenial-updates restricted multiverse universe main' updated to new dist
2016-05-01 10:05:43,503 DEBUG examining: 'deb http://ppa.launchpad.net/oibaf/graphics-drivers/ubuntu trusty main'
2016-05-01 10:05:43,506 DEBUG entry '# deb http://ppa.launchpad.net/oibaf/graphics-drivers/ubuntu xenial main # disabled on upgrade to xenial' was disabled (unknown mirror)
2016-05-01 10:05:43,506 DEBUG examining: 'deb http://ppa.launchpad.net/gezakovacs/ppa/ubuntu trusty main'
2016-05-01 10:05:43,508 DEBUG entry '# deb http://ppa.launchpad.net/gezakovacs/ppa/ubuntu xenial main # disabled on upgrade to xenial' was disabled (unknown mirror)
2016-05-01 10:05:43,508 DEBUG examining: 'deb http://ppa.launchpad.net/caffeine-developers/ppa/ubuntu trusty main'
2016-05-01 10:05:43,511 DEBUG entry '# deb http://ppa.launchpad.net/caffeine-developers/ppa/ubuntu xenial main # disabled on upgrade to xenial' was disabled (unknown mirror)
2016-05-01 10:05:58,626 DEBUG running doUpdate() (showErrors=True)
2016-05-01 10:06:47,133 DEBUG openCache()
2016-05-01 10:06:47,133 DEBUG failed to SystemUnLock() (E:Not locked) 
2016-05-01 10:06:53,200 DEBUG /openCache(), new cache size 82996
2016-05-01 10:06:53,200 DEBUG need_server_mode(): run in 'desktop' mode, (because of key deps for 'xubuntu-core')
2016-05-01 10:07:12,870 ERROR Dist-upgrade failed: 'E:Error, pkgProblemResolver::Resolve generated breaks, this may be caused by held packages.'
2016-05-01 10:07:12,891 DEBUG abort called
2016-05-01 10:07:12,893 DEBUG openCache()
2016-05-01 10:07:17,820 DEBUG /openCache(), new cache size 74035
2016-05-01 10:07:17,821 DEBUG enabling apt cron job