sudo do-release-upgrade
Checking for a new Ubuntu release
Get:1 Upgrade tool signature [819 B]
Get:2 Upgrade tool [1,258 kB]
Fetched 1,259 kB in 0s (0 B/s)
authenticate 'bionic.tar.gz' against 'bionic.tar.gz.gpg'
extracting 'bionic.tar.gz'
Reading cache
Checking package manager
Reading package lists... Done
Building dependency tree
Reading state information... Done
Hit http://us.archive.ubuntu.com/ubuntu xenial InRelease
Hit http://security.ubuntu.com/ubuntu xenial-security InRelease
Hit http://us.archive.ubuntu.com/ubuntu xenial-updates InRelease
Hit http://us.archive.ubuntu.com/ubuntu xenial-backports InRelease
Hit http://dl.ubnt.com/unifi/debian stable InRelease
Fetched 0 B in 0s (0 B/s)
Reading package lists... Done
Building dependency tree
Reading state information... Done
Updating repository information
Third party sources disabled
Some third party entries in your sources.list were disabled. You can
re-enable them after the upgrade with the 'software-properties' tool
or your package manager.
To continue please press [ENTER]
Get:1 http://security.ubuntu.com/ubuntu bionic-security InRelease [83.2 kB]
Get:2 http://us.archive.ubuntu.com/ubuntu bionic InRelease [242 kB]
Get:3 http://us.archive.ubuntu.com/ubuntu bionic-updates InRelease [88.7 kB]
Get:4 http://us.archive.ubuntu.com/ubuntu bionic-backports InRelease [74.6 kB]
Get:5 http://security.ubuntu.com/ubuntu bionic-security/main amd64 Packages [159 kB]
Get:6 http://security.ubuntu.com/ubuntu bionic-security/main i386 Packages [128 kB]
Get:7 http://security.ubuntu.com/ubuntu bionic-security/main Translation-en [60.9 kB]
Get:8 http://us.archive.ubuntu.com/ubuntu bionic/main amd64 Packages [1,019 kB]
Get:9 http://security.ubuntu.com/ubuntu bionic-security/main amd64 DEP-11 Metadata [204 B]
Get:10 http://security.ubuntu.com/ubuntu bionic-security/main DEP-11 64x64 Icons [29 B]
Get:11 http://security.ubuntu.com/ubuntu bionic-security/universe amd64 Packages [57.0 kB]
Get:12 http://security.ubuntu.com/ubuntu bionic-security/universe i386 Packages [56.9 kB]
Get:13 http://security.ubuntu.com/ubuntu bionic-security/universe Translation-en [33.6 kB]
Get:14 http://security.ubuntu.com/ubuntu bionic-security/universe amd64 DEP-11 Metadata [6,820 B]
Get:15 http://security.ubuntu.com/ubuntu bionic-security/universe DEP-11 64x64 Icons [11.3 kB]
Get:16 http://security.ubuntu.com/ubuntu bionic-security/multiverse amd64 Packages [1,444 B]
Get:17 http://security.ubuntu.com/ubuntu bionic-security/multiverse i386 Packages [1,608 B]
Get:18 http://security.ubuntu.com/ubuntu bionic-security/multiverse Translation-en [996 B]
Get:19 http://us.archive.ubuntu.com/ubuntu bionic/main i386 Packages [1,007 kB]
Get:20 http://us.archive.ubuntu.com/ubuntu bionic/main Translation-en [516 kB]
Get:21 http://us.archive.ubuntu.com/ubuntu bionic/main amd64 DEP-11 Metadata [477 kB]
Get:22 http://us.archive.ubuntu.com/ubuntu bionic/main DEP-11 64x64 Icons [245 kB]
Get:23 http://us.archive.ubuntu.com/ubuntu bionic/restricted amd64 Packages [9,184 B]
Get:24 http://us.archive.ubuntu.com/ubuntu bionic/restricted i386 Packages [9,156 B]
Get:25 http://us.archive.ubuntu.com/ubuntu bionic/restricted Translation-en [3,584 B]
Get:26 http://us.archive.ubuntu.com/ubuntu bionic/universe amd64 Packages [8,570 kB]
Get:27 http://us.archive.ubuntu.com/ubuntu bionic/universe i386 Packages [8,531 kB]
Get:28 http://us.archive.ubuntu.com/ubuntu bionic/universe Translation-en [4,941 kB]
Get:29 http://us.archive.ubuntu.com/ubuntu bionic/universe amd64 DEP-11 Metadata [3,287 kB]
Get:30 http://us.archive.ubuntu.com/ubuntu bionic/universe DEP-11 64x64 Icons [8,420 kB]
Get:31 http://us.archive.ubuntu.com/ubuntu bionic/multiverse amd64 Packages [151 kB]
Get:32 http://us.archive.ubuntu.com/ubuntu bionic/multiverse i386 Packages [144 kB]
Get:33 http://us.archive.ubuntu.com/ubuntu bionic/multiverse Translation-en [108 kB]
Get:34 http://us.archive.ubuntu.com/ubuntu bionic/multiverse amd64 DEP-11 Metadata [49.7 kB]
Get:35 http://us.archive.ubuntu.com/ubuntu bionic/multiverse DEP-11 64x64 Icons [225 kB]
Get:36 http://us.archive.ubuntu.com/ubuntu bionic-updates/main amd64 Packages [304 kB]
Get:37 http://us.archive.ubuntu.com/ubuntu bionic-updates/main i386 Packages [272 kB]
Get:38 http://us.archive.ubuntu.com/ubuntu bionic-updates/main Translation-en [115 kB]
Get:39 http://us.archive.ubuntu.com/ubuntu bionic-updates/main amd64 DEP-11 Metadata [138 kB]
Get:40 http://us.archive.ubuntu.com/ubuntu bionic-updates/main DEP-11 64x64 Icons [53.7 kB]
Get:41 http://us.archive.ubuntu.com/ubuntu bionic-updates/universe amd64 Packages [172 kB]
Get:42 http://us.archive.ubuntu.com/ubuntu bionic-updates/universe i386 Packages [173 kB]
Get:43 http://us.archive.ubuntu.com/ubuntu bionic-updates/universe Translation-en [80.0 kB]
Get:44 http://us.archive.ubuntu.com/ubuntu bionic-updates/universe amd64 DEP-11 Metadata [153 kB]
Get:45 http://us.archive.ubuntu.com/ubuntu bionic-updates/universe DEP-11 64x64 Icons [258 kB]
Get:46 http://us.archive.ubuntu.com/ubuntu bionic-updates/multiverse amd64 Packages [3,772 B]
Get:47 http://us.archive.ubuntu.com/ubuntu bionic-updates/multiverse i386 Packages [3,928 B]
Get:48 http://us.archive.ubuntu.com/ubuntu bionic-updates/multiverse Translation-en [2,376 B]
Get:49 http://us.archive.ubuntu.com/ubuntu bionic-updates/multiverse amd64 DEP-11 Metadata [2,468 B]
Get:50 http://us.archive.ubuntu.com/ubuntu bionic-updates/multiverse DEP-11 64x64 Icons [2,638 B]
Get:51 http://us.archive.ubuntu.com/ubuntu bionic-backports/universe amd64 Packages [2,704 B]
Get:52 http://us.archive.ubuntu.com/ubuntu bionic-backports/universe i386 Packages [2,704 B]
Get:53 http://us.archive.ubuntu.com/ubuntu bionic-backports/universe Translation-en [1,136 B]
Get:54 http://us.archive.ubuntu.com/ubuntu bionic-backports/universe amd64 DEP-11 Metadata [5,100 B]
Get:55 http://us.archive.ubuntu.com/ubuntu bionic-backports/universe DEP-11 64x64 Icons [1,789 B]
Fetched 40.5 MB in 0s (0 B/s)
(appstreamcli:4870): GLib-CRITICAL **: g_strchug: assertion 'string != NULL' failed
(appstreamcli:4870): GLib-CRITICAL **: g_strchomp: assertion 'string != NULL' failed
(appstreamcli:4870): GLib-CRITICAL **: g_strchug: assertion 'string != NULL' failed
(appstreamcli:4870): GLib-CRITICAL **: g_strchomp: assertion 'string != NULL' failed
(appstreamcli:4870): GLib-CRITICAL **: g_strchug: assertion 'string != NULL' failed
(appstreamcli:4870): 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.
This can be caused by:
* Upgrading to a pre-release version of Ubuntu
* Running the current pre-release version of Ubuntu
* Unofficial software packages not provided by Ubuntu
If none of this applies, then please report this bug using the
command 'ubuntu-bug ubuntu-release-upgrader-core' in a terminal.
Restoring original system state
Aborting
Reading package lists... Done
Building dependency tree
Reading state information... Done
Description: Ubuntu 16.04.5 LTS
Release: 16.04
ProblemType: Bug
DistroRelease: Ubuntu 16.04
Package: ubuntu-release-upgrader-core 1:16.04.25
ProcVersionSignature: Ubuntu 4.4.0-134.160-generic 4.4.140
Uname: Linux 4.4.0-134-generic x86_64
ApportVersion: 2.20.1-0ubuntu2.18
Architecture: amd64
CrashDB: ubuntu
CurrentDesktop: Unity
Date: Wed Aug 29 19:40:53 2018
InstallationDate: Installed on 2013-03-16 (1992 days ago)
InstallationMedia: Ubuntu 12.04.2 LTS "Precise Pangolin" - Release amd64 (20130213)
PackageArchitecture: all
ProcEnviron:
TERM=xterm-256color
PATH=(custom, no user)
XDG_RUNTIME_DIR=<set>
LANG=en_US.UTF-8
SHELL=/bin/bash
SourcePackage: ubuntu-release-upgrader
Symptom: ubuntu-release-upgrader
UpgradeStatus: Upgraded to xenial on 2018-08-29 (0 days ago)
