2020-11-11 10:52:36,980 INFO Using config files '['./DistUpgrade.cfg.bionic']'
2020-11-11 10:52:36,980 INFO uname information: 'Linux yoda 4.15.0-123-generic #126-Ubuntu SMP Wed Oct 21 09:40:11 UTC 2020 x86_64'
2020-11-11 10:52:37,261 INFO apt version: '1.6.12ubuntu0.1'
2020-11-11 10:52:37,261 INFO python version: '3.6.9 (default, Oct  8 2020, 12:12:24) 
[GCC 8.4.0]'
2020-11-11 10:52:37,264 INFO release-upgrader version '20.04.28' started
2020-11-11 10:52:37,270 INFO locale: 'en_US' 'UTF-8'
2020-11-11 10:52:37,365 DEBUG Using 'DistUpgradeViewText' view
2020-11-11 10:52:37,418 DEBUG enable dpkg --force-overwrite
2020-11-11 10:52:37,453 DEBUG creating statefile: '/var/log/dist-upgrade/apt-clone_system_state.tar.gz'
2020-11-11 10:52:39,765 DEBUG lsb-release: 'bionic'
2020-11-11 10:52:39,765 DEBUG _pythonSymlinkCheck run
2020-11-11 10:52:39,766 DEBUG openCache()
2020-11-11 10:52:39,766 DEBUG quirks: running PreCacheOpen
2020-11-11 10:52:39,766 DEBUG running Quirks.PreCacheOpen
2020-11-11 10:52:40,783 DEBUG Comparing 4.15.0-118 with 
2020-11-11 10:52:40,784 DEBUG Comparing 4.15.0-122 with 4.15.0-118
2020-11-11 10:52:40,784 DEBUG Comparing 4.15.0-123 with 4.15.0-122
2020-11-11 10:52:41,124 DEBUG /openCache(), new cache size 68786
2020-11-11 10:52:41,125 DEBUG need_server_mode(): can not find a desktop meta package or key deps, running in server mode
2020-11-11 10:52:41,125 DEBUG checkViewDepends()
2020-11-11 10:52:41,127 DEBUG running doUpdate() (showErrors=False)
2020-11-11 10:52:43,067 DEBUG openCache()
2020-11-11 10:52:44,110 DEBUG Comparing 4.15.0-118 with 
2020-11-11 10:52:44,111 DEBUG Comparing 4.15.0-122 with 4.15.0-118
2020-11-11 10:52:44,111 DEBUG Comparing 4.15.0-123 with 4.15.0-122
2020-11-11 10:52:44,462 DEBUG /openCache(), new cache size 68786
2020-11-11 10:52:44,462 DEBUG doPostInitialUpdate
2020-11-11 10:52:44,462 DEBUG quirks: running focalPostInitialUpdate
2020-11-11 10:52:44,462 DEBUG running Quirks.focalPostInitialUpdate
2020-11-11 10:52:48,311 DEBUG MetaPkgs: 
2020-11-11 10:52:52,670 DEBUG Foreign: 
2020-11-11 10:52:52,670 DEBUG Obsolete: 
2020-11-11 10:52:52,670 DEBUG updateSourcesList()
2020-11-11 10:52:52,685 DEBUG rewriteSourcesList() with mirror_check
2020-11-11 10:52:52,685 DEBUG ['ubuntu-minimal', 'ubuntu-standard']
2020-11-11 10:52:52,685 DEBUG Checking pkg: ubuntu-minimal
2020-11-11 10:52:52,688 DEBUG Checking pkg: ubuntu-standard
2020-11-11 10:52:52,690 DEBUG examining: 'deb http://archive.ubuntu.com/ubuntu bionic main restricted'
2020-11-11 10:52:52,690 DEBUG verifySourcesListEntry: deb http://archive.ubuntu.com/ubuntu focal main restricted
2020-11-11 10:52:52,690 DEBUG url_downloadable: http://archive.ubuntu.com/ubuntu/dists/focal/Release
2020-11-11 10:52:52,690 DEBUG s='http' n='archive.ubuntu.com' p='/ubuntu/dists/focal/Release' q='' f=''
2020-11-11 10:52:52,749 DEBUG entry 'deb http://archive.ubuntu.com/ubuntu focal main restricted' updated to new dist
2020-11-11 10:52:52,750 DEBUG examining: 'deb http://archive.ubuntu.com/ubuntu bionic-updates main restricted'
2020-11-11 10:52:52,750 DEBUG entry 'deb http://archive.ubuntu.com/ubuntu focal-updates main restricted' updated to new dist
2020-11-11 10:52:52,750 DEBUG examining: 'deb http://archive.ubuntu.com/ubuntu bionic universe'
2020-11-11 10:52:52,750 DEBUG entry 'deb http://archive.ubuntu.com/ubuntu focal universe' updated to new dist
2020-11-11 10:52:52,750 DEBUG examining: 'deb http://archive.ubuntu.com/ubuntu bionic-updates universe'
2020-11-11 10:52:52,750 DEBUG entry 'deb http://archive.ubuntu.com/ubuntu focal-updates universe' updated to new dist
2020-11-11 10:52:52,750 DEBUG examining: 'deb http://archive.ubuntu.com/ubuntu bionic multiverse'
2020-11-11 10:52:52,750 DEBUG entry 'deb http://archive.ubuntu.com/ubuntu focal multiverse' updated to new dist
2020-11-11 10:52:52,750 DEBUG examining: 'deb http://archive.ubuntu.com/ubuntu bionic-updates multiverse'
2020-11-11 10:52:52,751 DEBUG entry 'deb http://archive.ubuntu.com/ubuntu focal-updates multiverse' updated to new dist
2020-11-11 10:52:52,751 DEBUG examining: 'deb http://archive.ubuntu.com/ubuntu bionic-backports main restricted universe multiverse'
2020-11-11 10:52:52,751 DEBUG entry 'deb http://archive.ubuntu.com/ubuntu focal-backports main restricted universe multiverse' updated to new dist
2020-11-11 10:52:52,751 DEBUG examining: 'deb http://archive.ubuntu.com/ubuntu bionic-security main restricted'
2020-11-11 10:52:52,751 DEBUG entry 'deb http://archive.ubuntu.com/ubuntu focal-security main restricted' updated to new dist
2020-11-11 10:52:52,751 DEBUG examining: 'deb http://archive.ubuntu.com/ubuntu bionic-security universe'
2020-11-11 10:52:52,751 DEBUG entry 'deb http://archive.ubuntu.com/ubuntu focal-security universe' updated to new dist
2020-11-11 10:52:52,751 DEBUG examining: 'deb http://archive.ubuntu.com/ubuntu bionic-security multiverse'
2020-11-11 10:52:52,751 DEBUG entry 'deb http://archive.ubuntu.com/ubuntu focal-security multiverse' updated to new dist
2020-11-11 10:52:52,808 DEBUG running doUpdate() (showErrors=True)
2020-11-11 10:52:57,573 DEBUG openCache()
2020-11-11 10:52:58,537 DEBUG Comparing 4.15.0-118 with 
2020-11-11 10:52:58,537 DEBUG Comparing 4.15.0-122 with 4.15.0-118
2020-11-11 10:52:58,537 DEBUG Comparing 4.15.0-123 with 4.15.0-122
2020-11-11 10:52:58,823 DEBUG /openCache(), new cache size 61736
2020-11-11 10:52:58,824 DEBUG need_server_mode(): can not find a desktop meta package or key deps, running in server mode
2020-11-11 10:52:58,825 DEBUG quirks: running PreDistUpgradeCache
2020-11-11 10:52:58,825 DEBUG running Quirks.PreDistUpgradeCache
2020-11-11 10:52:58,825 INFO checking for python-dbg
2020-11-11 10:52:58,825 INFO checking for python-doc
2020-11-11 10:52:58,826 INFO checking for python-minimal
2020-11-11 10:52:58,826 INFO installing python-is-python2 because python-minimal was installed
2020-11-11 10:52:58,826 DEBUG Installing 'python-is-python2' (python-minimal was installed on the system)
2020-11-11 10:52:58,855 INFO removing python-minimal because python-is-python2 is being installed
2020-11-11 10:52:58,855 DEBUG Removing 'python-minimal' (python-is-python2 is being installed on the system)
2020-11-11 10:52:58,856 INFO failed to remove python-minimal
2020-11-11 10:52:58,856 INFO checking for python-dev
2020-11-11 10:52:58,857 INFO checking for libpython-dev
2020-11-11 10:52:58,857 INFO checking for libpython-stdlib
2020-11-11 10:52:58,857 INFO removing libpython-stdlib because None is being installed
2020-11-11 10:52:58,857 DEBUG Removing 'libpython-stdlib' (None is being installed on the system)
2020-11-11 10:52:58,857 INFO failed to remove libpython-stdlib
2020-11-11 10:52:58,857 INFO checking for libpython-dbg
2020-11-11 10:52:59,108 ERROR Dist-upgrade failed: 'E:Error, pkgProblemResolver::Resolve generated breaks, this may be caused by held packages.'
2020-11-11 10:52:59,108 DEBUG abort called
2020-11-11 10:52:59,109 DEBUG openCache()
2020-11-11 10:53:01,382 DEBUG Comparing 4.15.0-118 with 
2020-11-11 10:53:01,382 DEBUG Comparing 4.15.0-122 with 4.15.0-118
2020-11-11 10:53:01,382 DEBUG Comparing 4.15.0-123 with 4.15.0-122
2020-11-11 10:53:01,736 DEBUG /openCache(), new cache size 68786