2021-04-19 10:26:56,272 INFO Using config files '['./DistUpgrade.cfg.bionic']'
2021-04-19 10:26:56,272 INFO uname information: 'Linux jv 5.4.0-62-generic #70~18.04.1-Ubuntu SMP Tue Jan 12 17:18:00 UTC 2021 x86_64'
2021-04-19 10:26:56,619 INFO apt version: '1.6.12ubuntu0.2'
2021-04-19 10:26:56,619 INFO python version: '3.6.9 (default, Oct  8 2020, 12:12:24) 
[GCC 8.4.0]'
2021-04-19 10:26:56,624 INFO release-upgrader version '20.04.31' started
2021-04-19 10:26:56,669 INFO locale: 'en_SG' 'UTF-8'
2021-04-19 10:26:56,835 DEBUG Using 'DistUpgradeViewGtk3' view
2021-04-19 10:26:56,875 DEBUG enable dpkg --force-overwrite
2021-04-19 10:26:56,894 DEBUG creating statefile: '/var/log/dist-upgrade/apt-clone_system_state.tar.gz'
2021-04-19 10:26:58,746 DEBUG lsb-release: 'bionic'
2021-04-19 10:26:58,747 DEBUG _pythonSymlinkCheck run
2021-04-19 10:26:58,748 DEBUG openCache()
2021-04-19 10:26:58,748 DEBUG quirks: running PreCacheOpen
2021-04-19 10:26:58,748 DEBUG running Quirks.PreCacheOpen
2021-04-19 10:26:59,557 DEBUG Comparing 5.4.0-60 with 
2021-04-19 10:26:59,557 DEBUG Comparing 5.4.0-62 with 5.4.0-60
2021-04-19 10:26:59,731 DEBUG /openCache(), new cache size 98735
2021-04-19 10:26:59,732 DEBUG need_server_mode(): run in 'desktop' mode, (because of pkg 'ubuntu-desktop')
2021-04-19 10:26:59,732 DEBUG checkViewDepends()
2021-04-19 10:26:59,733 DEBUG running doUpdate() (showErrors=False)
2021-04-19 10:27:09,007 DEBUG openCache()
2021-04-19 10:27:09,884 DEBUG Comparing 5.4.0-60 with 
2021-04-19 10:27:09,884 DEBUG Comparing 5.4.0-62 with 5.4.0-60
2021-04-19 10:27:10,087 DEBUG /openCache(), new cache size 100123
2021-04-19 10:27:10,087 DEBUG doPostInitialUpdate
2021-04-19 10:27:10,087 DEBUG quirks: running focalPostInitialUpdate
2021-04-19 10:27:10,087 DEBUG running Quirks.focalPostInitialUpdate
2021-04-19 10:27:17,253 DEBUG Snap core18 is installed
2021-04-19 10:27:24,747 DEBUG MetaPkgs: ubuntu-desktop
2021-04-19 10:27:26,217 DEBUG Foreign: 
2021-04-19 10:27:26,217 DEBUG Obsolete: libnvidia-cfg1-450 libnvidia-common-450 libnvidia-compute-450 libnvidia-compute-450:i386 libnvidia-decode-450 libnvidia-decode-450:i386 libnvidia-encode-450 libnvidia-encode-450:i386 libnvidia-extra-450 libnvidia-fbc1-450 libnvidia-fbc1-450:i386 libnvidia-gl-450 libnvidia-gl-450:i386 libnvidia-ifr1-450 libnvidia-ifr1-450:i386 nvidia-compute-utils-450 nvidia-dkms-450 nvidia-driver-430 nvidia-driver-440 nvidia-driver-450 nvidia-kernel-common-450 nvidia-kernel-source-450 nvidia-utils-450 ttf-mscorefonts-installer ubuntu-restricted-addons ubuntu-restricted-extras unrar xserver-xorg-video-nvidia-450
2021-04-19 10:27:26,218 DEBUG updateSourcesList()
2021-04-19 10:27:26,222 DEBUG rewriteSourcesList() with mirror_check
2021-04-19 10:27:26,222 DEBUG ['ubuntu-minimal', 'ubuntu-standard']
2021-04-19 10:27:26,222 DEBUG Checking pkg: ubuntu-minimal
2021-04-19 10:27:26,223 DEBUG Checking pkg: ubuntu-standard
2021-04-19 10:27:26,223 DEBUG examining: 'deb http://archive.ubuntu.com/ubuntu bionic main'
2021-04-19 10:27:26,224 DEBUG verifySourcesListEntry: deb http://archive.ubuntu.com/ubuntu focal main
2021-04-19 10:27:26,224 DEBUG url_downloadable: http://archive.ubuntu.com/ubuntu/dists/focal/Release
2021-04-19 10:27:26,224 DEBUG s='http' n='archive.ubuntu.com' p='/ubuntu/dists/focal/Release' q='' f=''
2021-04-19 10:27:26,566 DEBUG entry 'deb http://archive.ubuntu.com/ubuntu focal main' updated to new dist
2021-04-19 10:27:26,567 DEBUG examining: 'deb http://archive.ubuntu.com/ubuntu bionic-updates main'
2021-04-19 10:27:26,567 DEBUG entry 'deb http://archive.ubuntu.com/ubuntu focal-updates main' updated to new dist
2021-04-19 10:27:26,567 DEBUG examining: 'deb http://archive.ubuntu.com/ubuntu bionic universe'
2021-04-19 10:27:26,567 DEBUG entry 'deb http://archive.ubuntu.com/ubuntu focal universe' updated to new dist
2021-04-19 10:27:26,567 DEBUG examining: 'deb http://archive.ubuntu.com/ubuntu bionic-updates universe'
2021-04-19 10:27:26,567 DEBUG entry 'deb http://archive.ubuntu.com/ubuntu focal-updates universe' updated to new dist
2021-04-19 10:27:26,567 DEBUG examining: 'deb http://archive.ubuntu.com/ubuntu bionic-backports main universe'
2021-04-19 10:27:26,568 DEBUG entry 'deb http://archive.ubuntu.com/ubuntu focal-backports main universe' updated to new dist
2021-04-19 10:27:26,568 DEBUG examining: 'deb http://archive.ubuntu.com/ubuntu bionic-security main'
2021-04-19 10:27:26,568 DEBUG entry 'deb http://archive.ubuntu.com/ubuntu focal-security main' updated to new dist
2021-04-19 10:27:26,568 DEBUG examining: 'deb http://archive.ubuntu.com/ubuntu bionic-security universe'
2021-04-19 10:27:26,568 DEBUG entry 'deb http://archive.ubuntu.com/ubuntu focal-security universe' updated to new dist
2021-04-19 10:27:26,570 DEBUG running doUpdate() (showErrors=True)
2021-04-19 10:27:41,233 DEBUG openCache()
2021-04-19 10:27:41,839 DEBUG Comparing 5.4.0-60 with 
2021-04-19 10:27:41,839 DEBUG Comparing 5.4.0-62 with 5.4.0-60
2021-04-19 10:27:41,982 DEBUG /openCache(), new cache size 66607
2021-04-19 10:27:41,982 DEBUG need_server_mode(): run in 'desktop' mode, (because of pkg 'ubuntu-desktop')
2021-04-19 10:27:41,983 DEBUG quirks: running PreDistUpgradeCache
2021-04-19 10:27:41,983 DEBUG running Quirks.PreDistUpgradeCache
2021-04-19 10:27:41,983 INFO checking for python-dbg (auto_inst=False)
2021-04-19 10:27:41,983 INFO checking for python-doc (auto_inst=False)
2021-04-19 10:27:41,983 INFO checking for python-minimal (auto_inst=False)
2021-04-19 10:27:41,983 INFO installing python-is-python2 because python-minimal was installed
2021-04-19 10:27:41,983 DEBUG Installing 'python-is-python2' (python-minimal was installed on the system)
2021-04-19 10:27:42,012 INFO removing python-minimal because python-is-python2 is being installed
2021-04-19 10:27:42,012 DEBUG Removing 'python-minimal' (python-is-python2 is being installed on the system)
2021-04-19 10:27:42,035 INFO failed to remove python-minimal
2021-04-19 10:27:42,036 INFO checking for python-dev (auto_inst=False)
2021-04-19 10:27:42,036 INFO installing python-dev-is-python2 because python-dev was installed
2021-04-19 10:27:42,036 DEBUG Installing 'python-dev-is-python2' (python-dev was installed on the system)
2021-04-19 10:27:42,058 INFO removing python-dev because python-dev-is-python2 is being installed
2021-04-19 10:27:42,058 DEBUG Removing 'python-dev' (python-dev-is-python2 is being installed on the system)
2021-04-19 10:27:42,080 INFO failed to remove python-dev
2021-04-19 10:27:42,080 INFO checking for libpython-dev (auto_inst=False)
2021-04-19 10:27:42,081 INFO removing libpython-dev because None is being installed
2021-04-19 10:27:42,081 DEBUG Removing 'libpython-dev' (None is being installed on the system)
2021-04-19 10:27:42,103 INFO failed to remove libpython-dev
2021-04-19 10:27:42,103 INFO checking for libpython-stdlib (auto_inst=False)
2021-04-19 10:27:42,103 INFO removing libpython-stdlib because None is being installed
2021-04-19 10:27:42,103 DEBUG Removing 'libpython-stdlib' (None is being installed on the system)
2021-04-19 10:27:42,124 INFO failed to remove libpython-stdlib
2021-04-19 10:27:42,125 INFO checking for libpython-dbg (auto_inst=False)
2021-04-19 10:27:42,125 INFO checking for python-dbg (auto_inst=True)
2021-04-19 10:27:42,125 INFO checking for python-doc (auto_inst=True)
2021-04-19 10:27:42,125 INFO checking for python-minimal (auto_inst=True)
2021-04-19 10:27:42,125 INFO installing python-is-python2 because python-minimal was installed
2021-04-19 10:27:42,125 DEBUG Installing 'python-is-python2' (python-minimal was installed on the system)
2021-04-19 10:27:42,150 INFO removing python-minimal because python-is-python2 is being installed
2021-04-19 10:27:42,151 DEBUG Removing 'python-minimal' (python-is-python2 is being installed on the system)
2021-04-19 10:27:42,151 INFO failed to remove python-minimal
2021-04-19 10:27:42,151 INFO checking for python-dev (auto_inst=True)
2021-04-19 10:27:42,151 INFO installing python-dev-is-python2 because python-dev was installed
2021-04-19 10:27:42,151 DEBUG Installing 'python-dev-is-python2' (python-dev was installed on the system)
2021-04-19 10:27:42,174 INFO removing python-dev because python-dev-is-python2 is being installed
2021-04-19 10:27:42,174 DEBUG Removing 'python-dev' (python-dev-is-python2 is being installed on the system)
2021-04-19 10:27:42,175 INFO failed to remove python-dev
2021-04-19 10:27:42,175 INFO checking for libpython-dev (auto_inst=True)
2021-04-19 10:27:42,175 INFO removing libpython-dev because None is being installed
2021-04-19 10:27:42,175 DEBUG Removing 'libpython-dev' (None is being installed on the system)
2021-04-19 10:27:42,175 INFO failed to remove libpython-dev
2021-04-19 10:27:42,175 INFO checking for libpython-stdlib (auto_inst=True)
2021-04-19 10:27:42,175 INFO removing libpython-stdlib because None is being installed
2021-04-19 10:27:42,175 DEBUG Removing 'libpython-stdlib' (None is being installed on the system)
2021-04-19 10:27:42,175 INFO failed to remove libpython-stdlib
2021-04-19 10:27:42,175 INFO checking for libpython-dbg (auto_inst=True)