2020-04-28 10:22:53,625 INFO Using config files '['./DistUpgrade.cfg.bionic']'
2020-04-28 10:22:53,625 INFO uname information: 'Linux paul-custard-desktop 5.3.0-46-generic #38~18.04.1-Ubuntu SMP Tue Mar 31 04:17:56 UTC 2020 x86_64'
2020-04-28 10:22:53,931 INFO apt version: '1.6.12'
2020-04-28 10:22:53,931 INFO python version: '3.6.9 (default, Apr 18 2020, 01:56:04) 
[GCC 8.4.0]'
2020-04-28 10:22:53,934 INFO release-upgrader version '20.04.18' started
2020-04-28 10:22:53,941 INFO locale: 'en_GB' 'UTF-8'
2020-04-28 10:22:53,973 INFO screen could not be run
2020-04-28 10:22:53,993 DEBUG Using 'DistUpgradeViewText' view
2020-04-28 10:22:54,023 DEBUG enable dpkg --force-overwrite
2020-04-28 10:22:54,042 DEBUG creating statefile: '/var/log/dist-upgrade/apt-clone_system_state.tar.gz'
2020-04-28 10:22:57,348 DEBUG lsb-release: 'bionic'
2020-04-28 10:22:57,348 DEBUG _pythonSymlinkCheck run
2020-04-28 10:22:57,349 DEBUG openCache()
2020-04-28 10:22:57,349 DEBUG quirks: running PreCacheOpen
2020-04-28 10:22:57,349 DEBUG running Quirks.PreCacheOpen
2020-04-28 10:22:57,807 DEBUG /openCache(), new cache size 96847
2020-04-28 10:22:57,807 DEBUG need_server_mode(): run in 'desktop' mode, (because of pkg 'ubuntu-desktop')
2020-04-28 10:22:57,807 DEBUG checkViewDepends()
2020-04-28 10:22:57,808 DEBUG running doUpdate() (showErrors=False)
2020-04-28 10:23:04,474 DEBUG openCache()
2020-04-28 10:23:04,997 DEBUG /openCache(), new cache size 96847
2020-04-28 10:23:04,997 DEBUG doPostInitialUpdate
2020-04-28 10:23:04,997 DEBUG quirks: running focalPostInitialUpdate
2020-04-28 10:23:04,997 DEBUG running Quirks.focalPostInitialUpdate
2020-04-28 10:23:06,170 DEBUG Snap core18 is installed
2020-04-28 10:23:06,543 DEBUG Snap gtk-common-themes is installed
2020-04-28 10:23:06,544 DEBUG Snap gtk-common-themes is not tracking the release channel
2020-04-28 10:23:06,961 DEBUG Snap gnome-3-28-1804 is installed
2020-04-28 10:23:06,962 DEBUG Snap gnome-3-28-1804 is not tracking the release channel
2020-04-28 10:23:09,708 DEBUG MetaPkgs: ubuntu-desktop
2020-04-28 10:23:12,697 DEBUG Foreign: code containerd.io docker-ce docker-ce-cli google-chrome-stable nodejs yarn
2020-04-28 10:23:12,697 DEBUG Obsolete: arc-icons lando libvpx4 linux-image-4.13.0-39-generic plexmediaserver qfinderpro virtualbox-5.2
2020-04-28 10:23:12,697 DEBUG updateSourcesList()
2020-04-28 10:23:12,704 DEBUG rewriteSourcesList() with mirror_check
2020-04-28 10:23:12,704 DEBUG ['ubuntu-minimal', 'ubuntu-standard']
2020-04-28 10:23:12,704 DEBUG Checking pkg: ubuntu-minimal
2020-04-28 10:23:12,706 DEBUG Checking pkg: ubuntu-standard
2020-04-28 10:23:12,708 DEBUG examining: 'deb http://archive.ubuntu.com/ubuntu bionic main restricted'
2020-04-28 10:23:12,708 DEBUG verifySourcesListEntry: deb http://archive.ubuntu.com/ubuntu focal main restricted
2020-04-28 10:23:12,708 DEBUG url_downloadable: http://archive.ubuntu.com/ubuntu/dists/focal/Release
2020-04-28 10:23:12,708 DEBUG s='http' n='archive.ubuntu.com' p='/ubuntu/dists/focal/Release' q='' f=''
2020-04-28 10:23:12,762 DEBUG entry 'deb http://archive.ubuntu.com/ubuntu focal main restricted' updated to new dist
2020-04-28 10:23:12,763 DEBUG examining: 'deb http://archive.ubuntu.com/ubuntu bionic-updates main restricted'
2020-04-28 10:23:12,763 DEBUG entry 'deb http://archive.ubuntu.com/ubuntu focal-updates main restricted' updated to new dist
2020-04-28 10:23:12,763 DEBUG examining: 'deb http://archive.ubuntu.com/ubuntu bionic universe'
2020-04-28 10:23:12,763 DEBUG entry 'deb http://archive.ubuntu.com/ubuntu focal universe' updated to new dist
2020-04-28 10:23:12,763 DEBUG examining: 'deb http://archive.ubuntu.com/ubuntu bionic-updates universe'
2020-04-28 10:23:12,763 DEBUG entry 'deb http://archive.ubuntu.com/ubuntu focal-updates universe' updated to new dist
2020-04-28 10:23:12,763 DEBUG examining: 'deb http://archive.ubuntu.com/ubuntu bionic multiverse'
2020-04-28 10:23:12,763 DEBUG entry 'deb http://archive.ubuntu.com/ubuntu focal multiverse' updated to new dist
2020-04-28 10:23:12,764 DEBUG examining: 'deb http://archive.ubuntu.com/ubuntu bionic-updates multiverse'
2020-04-28 10:23:12,764 DEBUG entry 'deb http://archive.ubuntu.com/ubuntu focal-updates multiverse' updated to new dist
2020-04-28 10:23:12,764 DEBUG examining: 'deb http://archive.ubuntu.com/ubuntu bionic-backports main restricted universe multiverse'
2020-04-28 10:23:12,764 DEBUG entry 'deb http://archive.ubuntu.com/ubuntu focal-backports main restricted universe multiverse' updated to new dist
2020-04-28 10:23:12,764 DEBUG examining: 'deb http://archive.ubuntu.com/ubuntu bionic-security main restricted'
2020-04-28 10:23:12,764 DEBUG entry 'deb http://archive.ubuntu.com/ubuntu focal-security main restricted' updated to new dist
2020-04-28 10:23:12,764 DEBUG examining: 'deb http://archive.ubuntu.com/ubuntu bionic-security universe'
2020-04-28 10:23:12,764 DEBUG entry 'deb http://archive.ubuntu.com/ubuntu focal-security universe' updated to new dist
2020-04-28 10:23:12,764 DEBUG examining: 'deb http://archive.ubuntu.com/ubuntu bionic-security multiverse'
2020-04-28 10:23:12,764 DEBUG entry 'deb http://archive.ubuntu.com/ubuntu focal-security multiverse' updated to new dist
2020-04-28 10:23:12,764 DEBUG examining: 'deb [arch=amd64] https://download.docker.com/linux/ubuntu bionic edge'
2020-04-28 10:23:12,766 DEBUG entry '# deb [arch=amd64] https://download.docker.com/linux/ubuntu focal edge # disabled on upgrade to focal' was disabled (unknown mirror)
2020-04-28 10:23:12,766 DEBUG examining: 'deb https://deb.nodesource.com/node_12.x bionic main'
2020-04-28 10:23:12,768 DEBUG entry '# deb https://deb.nodesource.com/node_12.x focal main # disabled on upgrade to focal' was disabled (unknown mirror)
2020-04-28 10:23:12,768 DEBUG examining: 'deb-src https://deb.nodesource.com/node_12.x bionic main'
2020-04-28 10:23:12,769 DEBUG entry '# deb-src https://deb.nodesource.com/node_12.x focal main # disabled on upgrade to focal' was disabled (unknown mirror)
2020-04-28 10:23:12,769 DEBUG examining: 'deb [arch=amd64] http://packages.microsoft.com/repos/vscode stable main'
2020-04-28 10:23:12,771 DEBUG entry '# deb [arch=amd64] http://packages.microsoft.com/repos/vscode stable main # disabled on upgrade to focal' was disabled (unknown mirror)
2020-04-28 10:23:12,771 DEBUG examining: 'deb [arch=amd64] http://dl.google.com/linux/chrome/deb/ stable main'
2020-04-28 10:23:12,772 DEBUG entry '# deb [arch=amd64] http://dl.google.com/linux/chrome/deb/ stable main # disabled on upgrade to focal' was disabled (unknown mirror)
2020-04-28 10:23:12,772 DEBUG examining: 'deb https://dl.yarnpkg.com/debian/ stable main'
2020-04-28 10:23:12,774 DEBUG entry '# deb https://dl.yarnpkg.com/debian/ stable main # disabled on upgrade to focal' was disabled (unknown mirror)
2020-04-28 10:23:12,774 DEBUG examining: 'deb https://packagecloud.io/slacktechnologies/slack/debian/ jessie main'
2020-04-28 10:23:12,776 DEBUG entry '# deb https://packagecloud.io/slacktechnologies/slack/debian/ jessie main # disabled on upgrade to focal' was disabled (unknown mirror)
2020-04-28 10:23:16,112 DEBUG running doUpdate() (showErrors=True)
2020-04-28 10:23:21,509 DEBUG openCache()
2020-04-28 10:23:21,842 DEBUG /openCache(), new cache size 65439
2020-04-28 10:23:21,842 DEBUG need_server_mode(): run in 'desktop' mode, (because of pkg 'ubuntu-desktop')
2020-04-28 10:23:22,879 DEBUG Running KeepInstalledSection rules
2020-04-28 10:23:23,392 DEBUG Kernel uname: '5.3.0-46-generic' 
2020-04-28 10:23:23,398 DEBUG nvidiaUpdate()
2020-04-28 10:23:24,095 INFO no old nvidia driver installed, installing no new
2020-04-28 10:23:24,096 DEBUG Removing 'xscreensaver' (ubuntu-desktop PostUpgradeRemove rule)
2020-04-28 10:23:24,096 DEBUG Removing 'gnome-cups-manager' (ubuntu-desktop PostUpgradeRemove rule)
2020-04-28 10:23:24,096 DEBUG Removing 'powermanagement-interface' (ubuntu-desktop PostUpgradeRemove rule)
2020-04-28 10:23:24,096 DEBUG Removing 'deskbar-applet' (ubuntu-desktop PostUpgradeRemove rule)
2020-04-28 10:23:24,096 DEBUG Removing 'nautilus-cd-burner' (ubuntu-desktop PostUpgradeRemove rule)
2020-04-28 10:23:24,096 DEBUG quirks: running PostDistUpgradeCache
2020-04-28 10:23:24,096 DEBUG running Quirks.PostDistUpgradeCache
2020-04-28 10:23:24,313 DEBUG Comparing 4.13.0-39 with 
2020-04-28 10:23:24,313 DEBUG Comparing 4.15.0-96 with 4.13.0-39
2020-04-28 10:23:24,313 DEBUG Comparing 5.3.0-45 with 4.15.0-96
2020-04-28 10:23:24,313 DEBUG Comparing 5.3.0-46 with 5.3.0-45
2020-04-28 10:23:24,313 DEBUG Comparing 5.4.0-26 with 5.3.0-46
2020-04-28 10:23:24,418 INFO installing python-is-python2 because python-minimal was installed
2020-04-28 10:23:24,418 DEBUG Installing 'python-is-python2' (python-minimal was installed on the system)
2020-04-28 10:23:24,543 ERROR Dist-upgrade failed: 'E:Unable to correct problems, you have held broken packages.'
2020-04-28 10:23:24,545 DEBUG abort called
2020-04-28 10:23:24,546 DEBUG openCache()
2020-04-28 10:23:26,310 DEBUG /openCache(), new cache size 96847