Public bug reported:
Get:66 http://us.archive.ubuntu.com/ubuntu bionic-backports/universe amd64
DEP-11 Metadata [5,100 B]
Get:67 http://us.archive.ubuntu.com/ubuntu bionic-backports/universe DEP-11
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(appstreamcli:29485): GLib-CRITICAL **: g_strchug: assertion 'string !=
NULL' failed
(appstreamcli:29485): GLib-CRITICAL **: g_strchomp: assertion 'string !=
NULL' failed
(appstreamcli:29485): GLib-CRITICAL **: g_strchug: assertion 'string !=
NULL' failed
(appstreamcli:29485): GLib-CRITICAL **: g_strchomp: assertion 'string !=
NULL' failed
(appstreamcli:29485): GLib-CRITICAL **: g_strchug: assertion 'string !=
NULL' failed
(appstreamcli:29485): GLib-CRITICAL **: g_strchomp: assertion 'string !=
NULL' failed
(appstreamcli:29485): GLib-CRITICAL **: g_strchug: assertion 'string !=
NULL' failed
(appstreamcli:29485): GLib-CRITICAL **: g_strchomp: assertion 'string !=
NULL' failed
(appstreamcli:29485): GLib-CRITICAL **: g_strchug: assertion 'string !=
NULL' failed
(appstreamcli:29485): GLib-CRITICAL **: g_strchomp: assertion 'string != NULL'
failed
AppStream cache update completed, but some metadata was ignored due to errors.
Checking package manager
Reading package lists... Done
Building dependency tree
Reading state information... Done
Calculating the changes
Calculating the changes
Could not calculate the upgrade
An unresolvable problem occurred while calculating the upgrade.
ProblemType: Bug
DistroRelease: Ubuntu 16.04
Package: ubuntu-release-upgrader-core 1:16.04.25
ProcVersionSignature: Ubuntu 4.4.0-45.66-generic 4.4.21
Uname: Linux 4.4.0-45-generic x86_64
NonfreeKernelModules: zfs zunicode zcommon znvpair zavl nvidia_uvm nvidia_drm
nvidia_modeset nvidia
ApportVersion: 2.20.1-0ubuntu2.18
Architecture: amd64
CrashDB: ubuntu
CurrentDesktop: XFCE
Date: Wed Jul 25 13:53:15 2018
InstallationDate: Installed on 2016-10-24 (638 days ago)
InstallationMedia: Ubuntu-Server 16.04 LTS "Xenial Xerus" - Release amd64
(20160420.3)
PackageArchitecture: all
SourcePackage: ubuntu-release-upgrader
UpgradeStatus: Upgraded to xenial on 2018-07-25 (0 days ago)
** Affects: ubuntu-release-upgrader (Ubuntu)
Importance: High
Status: New
** Tags: amd64 apport-bug dist-upgrade third-party-packages xenial
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https://bugs.launchpad.net/bugs/1783619
Title:
do-release-upgrade fails to calculate upgrade, crashes because
appstreamcli crashes iin a g_str* assertion
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