2021-06-16 14:43:56,459 INFO Using config files '['./DistUpgrade.cfg.xenial', '/etc/update-manager/release-upgrades.d/ubuntu-advantage-upgrades.cfg']'
2021-06-16 14:43:56,459 INFO uname information: 'Linux ambikeya-HP-ProBook-440-G2 4.15.0-142-generic #146~16.04.1-Ubuntu SMP Tue Apr 13 09:27:15 UTC 2021 x86_64'
2021-06-16 14:43:56,874 INFO apt version: '1.2.35'
2021-06-16 14:43:56,874 INFO python version: '3.5.2 (default, Jan 26 2021, 13:30:48) 
[GCC 5.4.0 20160609]'
2021-06-16 14:43:56,878 INFO release-upgrader version '18.04.44' started
2021-06-16 14:43:56,889 INFO locale: 'en_US' 'UTF-8'
2021-06-16 14:43:56,944 INFO screen could not be run
2021-06-16 14:43:57,070 DEBUG Using 'DistUpgradeViewText' view
2021-06-16 14:43:57,125 DEBUG enable dpkg --force-overwrite
2021-06-16 14:43:57,161 DEBUG creating statefile: '/var/log/dist-upgrade/apt-clone_system_state.tar.gz'
2021-06-16 14:44:01,998 DEBUG lsb-release: 'xenial'
2021-06-16 14:44:01,999 DEBUG _pythonSymlinkCheck run
2021-06-16 14:44:02,001 DEBUG openCache()
2021-06-16 14:44:02,001 DEBUG No such plugin directory: ./plugins
2021-06-16 14:44:02,001 DEBUG plugins for condition 'PreCacheOpen' are '[]'
2021-06-16 14:44:02,001 DEBUG plugins for condition 'bionicPreCacheOpen' are '[]'
2021-06-16 14:44:02,001 DEBUG plugins for condition 'from_xenialPreCacheOpen' are '[]'
2021-06-16 14:44:02,001 DEBUG quirks: running PreCacheOpen
2021-06-16 14:44:02,001 DEBUG running Quirks.PreCacheOpen
2021-06-16 14:44:02,728 DEBUG /openCache(), new cache size 93453
2021-06-16 14:44:02,729 DEBUG need_server_mode(): run in 'desktop' mode, (because of pkg 'ubuntu-desktop')
2021-06-16 14:44:02,729 DEBUG checkViewDepends()
2021-06-16 14:44:02,729 DEBUG running doUpdate() (showErrors=False)
2021-06-16 14:44:03,517 DEBUG openCache()
2021-06-16 14:44:04,291 DEBUG /openCache(), new cache size 93453
2021-06-16 14:44:04,291 DEBUG doPostInitialUpdate
2021-06-16 14:44:04,292 DEBUG plugins for condition 'PostInitialUpdate' are '[]'
2021-06-16 14:44:04,292 DEBUG plugins for condition 'bionicPostInitialUpdate' are '[]'
2021-06-16 14:44:04,292 DEBUG plugins for condition 'from_xenialPostInitialUpdate' are '[]'
2021-06-16 14:44:04,292 DEBUG quirks: running bionicPostInitialUpdate
2021-06-16 14:44:04,292 DEBUG running Quirks.bionicPostInitialUpdate
2021-06-16 14:44:14,795 DEBUG MetaPkgs: ubuntu-desktop
2021-06-16 14:44:19,024 DEBUG Foreign: 
2021-06-16 14:44:19,024 DEBUG Obsolete: argos3_simulator code cpp-7 g++-7 gcc-7 gcc-7-base gcc-8-base gcc-9-base google-chrome-stable launchpad-getkeys libasan4 libfcl0.5 libgcc-7-dev libmono-btls-interface4.0-cil libmono-system-deployment4.0-cil libmono-system-numerics-vectors4.0-cil libmono-system-reflection-context4.0-cil libmono-system-web-mobile4.0-cil libmono-system-web-regularexpressions4.0-cil libmono-system-workflow-activities4.0-cil libmono-system-workflow-componentmodel4.0-cil libmono-system-workflow-runtime4.0-cil libmpx2 libpyside-py3-2.0 libpyside2-dev libpyside2.0 libshiboken-py3-2.0 libshiboken2-dev libshiboken2.0 libstdc++-7-dev mono-llvm-support mono-llvm-tools mono-roslyn msbuild msbuild-libhostfxr msbuild-sdkresolver python-catkin-pkg-modules python-catkin-tools python-osrf-pycommon python-pyside2 python-pyside2.qtconcurrent python-pyside2.qtcore python-pyside2.qtgui python-pyside2.qthelp python-pyside2.qtnetwork python-pyside2.qtprintsupport python-pyside2.qtqml python-pyside2.qtquick python-pyside2.qtquickwidgets python-pyside2.qtscript python-pyside2.qtsql python-pyside2.qtsvg python-pyside2.qttest python-pyside2.qtuitools python-pyside2.qtwebkit python-pyside2.qtwebkitwidgets python-pyside2.qtwidgets python-pyside2.qtx11extras python-pyside2.qtxml python-rosdep-modules python-rosdistro-modules python-rospkg-modules referenceassemblies-pcl ros-kinetic-angles ros-kinetic-catkin ros-kinetic-cmake-modules ros-kinetic-eigen-stl-containers ros-kinetic-euslisp ros-kinetic-gencpp ros-kinetic-geneus ros-kinetic-genlisp ros-kinetic-genmsg ros-kinetic-gennodejs ros-kinetic-genpy ros-kinetic-gl-dependency ros-kinetic-jskeus ros-kinetic-libfranka ros-kinetic-media-export ros-kinetic-message-generation ros-kinetic-octomap ros-kinetic-opencv3 ros-kinetic-orocos-kdl ros-kinetic-python-orocos-kdl ros-kinetic-python-qt-binding ros-kinetic-qt-dotgraph ros-kinetic-qt-gui ros-kinetic-qt-gui-py-common ros-kinetic-qwt-dependency ros-kinetic-ros-environment ros-kinetic-rosbag-migration-rule ros-kinetic-rosboost-cfg ros-kinetic-rosclean ros-kinetic-rosgraph ros-kinetic-roslang ros-kinetic-roslint ros-kinetic-roslz4 ros-kinetic-rosmake ros-kinetic-rosmaster ros-kinetic-rosparam ros-kinetic-rqt-gui ros-kinetic-smach ros-kinetic-smclib ros-kinetic-stage ros-kinetic-urdf-parser-plugin ros-kinetic-urdfdom-py ros-kinetic-webkit-dependency shiboken2 teamviewer y-ppa-manager zoom
2021-06-16 14:44:19,024 DEBUG updateSourcesList()
2021-06-16 14:44:19,108 DEBUG rewriteSourcesList() with mirror_check
2021-06-16 14:44:19,108 DEBUG ['ubuntu-minimal', 'ubuntu-standard']
2021-06-16 14:44:19,108 DEBUG Checking pkg: ubuntu-minimal
2021-06-16 14:44:19,110 DEBUG Checking pkg: ubuntu-standard
2021-06-16 14:44:19,111 DEBUG examining: 'deb http://archive.ubuntu.com/ubuntu xenial main restricted'
2021-06-16 14:44:19,111 DEBUG verifySourcesListEntry: deb http://archive.ubuntu.com/ubuntu bionic main restricted
2021-06-16 14:44:19,111 DEBUG url_downloadable: http://archive.ubuntu.com/ubuntu/dists/bionic/Release
2021-06-16 14:44:19,111 DEBUG s='http' n='archive.ubuntu.com' p='/ubuntu/dists/bionic/Release' q='' f=''
2021-06-16 14:44:19,188 DEBUG entry 'deb http://archive.ubuntu.com/ubuntu bionic main restricted' updated to new dist
2021-06-16 14:44:19,189 DEBUG examining: 'deb http://archive.ubuntu.com/ubuntu xenial-updates main restricted'
2021-06-16 14:44:19,189 DEBUG entry 'deb http://archive.ubuntu.com/ubuntu bionic-updates main restricted' updated to new dist
2021-06-16 14:44:19,189 DEBUG examining: 'deb http://archive.ubuntu.com/ubuntu xenial universe'
2021-06-16 14:44:19,189 DEBUG entry 'deb http://archive.ubuntu.com/ubuntu bionic universe' updated to new dist
2021-06-16 14:44:19,189 DEBUG examining: 'deb http://archive.ubuntu.com/ubuntu xenial-updates universe'
2021-06-16 14:44:19,190 DEBUG entry 'deb http://archive.ubuntu.com/ubuntu bionic-updates universe' updated to new dist
2021-06-16 14:44:19,190 DEBUG examining: 'deb http://archive.ubuntu.com/ubuntu xenial multiverse'
2021-06-16 14:44:19,190 DEBUG entry 'deb http://archive.ubuntu.com/ubuntu bionic multiverse' updated to new dist
2021-06-16 14:44:19,190 DEBUG examining: 'deb http://archive.ubuntu.com/ubuntu xenial-updates multiverse'
2021-06-16 14:44:19,190 DEBUG entry 'deb http://archive.ubuntu.com/ubuntu bionic-updates multiverse' updated to new dist
2021-06-16 14:44:19,191 DEBUG examining: 'deb http://archive.ubuntu.com/ubuntu xenial-backports main restricted universe multiverse'
2021-06-16 14:44:19,191 DEBUG entry 'deb http://archive.ubuntu.com/ubuntu bionic-backports main restricted universe multiverse' updated to new dist
2021-06-16 14:44:19,191 DEBUG examining: 'deb http://archive.ubuntu.com/ubuntu xenial-security main restricted'
2021-06-16 14:44:19,191 DEBUG entry 'deb http://archive.ubuntu.com/ubuntu bionic-security main restricted' updated to new dist
2021-06-16 14:44:19,192 DEBUG examining: 'deb http://archive.ubuntu.com/ubuntu xenial-security universe'
2021-06-16 14:44:19,192 DEBUG entry 'deb http://archive.ubuntu.com/ubuntu bionic-security universe' updated to new dist
2021-06-16 14:44:19,192 DEBUG examining: 'deb http://archive.ubuntu.com/ubuntu xenial-security multiverse'
2021-06-16 14:44:19,192 DEBUG entry 'deb http://archive.ubuntu.com/ubuntu bionic-security multiverse' updated to new dist
2021-06-16 14:44:19,197 DEBUG running doUpdate() (showErrors=True)
2021-06-16 14:44:27,645 DEBUG openCache()
2021-06-16 14:44:28,525 DEBUG /openCache(), new cache size 104380
2021-06-16 14:44:28,525 DEBUG need_server_mode(): run in 'desktop' mode, (because of pkg 'ubuntu-desktop')
2021-06-16 14:44:29,410 ERROR Dist-upgrade failed: 'E:Error, pkgProblemResolver::Resolve generated breaks, this may be caused by held packages.'
2021-06-16 14:44:29,411 DEBUG abort called
2021-06-16 14:44:29,413 DEBUG openCache()
2021-06-16 14:44:32,638 DEBUG /openCache(), new cache size 93453