Public bug reported:
Updating repository information
Get:1 http://us.archive.ubuntu.com/ubuntu bionic InRelease [242 kB]
Get:2 http://security.ubuntu.com/ubuntu bionic-security InRelease [83.2 kB]
Get:3 http://security.ubuntu.com/ubuntu bionic-security/main amd64 Packages
[158 kB]
Get:4 http://us.archive.ubuntu.com/ubuntu bionic-updates InRelease [88.7 kB]
Get:5 http://us.archive.ubuntu.com/ubuntu bionic-backports InRelease [74.6 kB]
Get:6 http://us.archive.ubuntu.com/ubuntu bionic/main amd64 Packages [1019 kB]
Get:7 http://security.ubuntu.com/ubuntu bionic-security/main i386 Packages [128
kB]
Get:8 http://security.ubuntu.com/ubuntu bionic-security/main Translation-en
[60.8 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 [6820 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 [1444 B]
Get:17 http://security.ubuntu.com/ubuntu bionic-security/multiverse i386
Packages [1608 B]
Get:18 http://us.archive.ubuntu.com/ubuntu bionic/main i386 Packages [1007 kB]
Get:19 http://security.ubuntu.com/ubuntu bionic-security/multiverse
Translation-en [996 B]
Get:20 http://us.archive.ubuntu.com/ubuntu bionic/main Translation-en [516 kB]
Get:21 http://us.archive.ubuntu.com/ubuntu bionic/main Translation-en_GB [432
kB]
Get:22 http://us.archive.ubuntu.com/ubuntu bionic/main amd64 DEP-11 Metadata
[477 kB]
Get:23 http://us.archive.ubuntu.com/ubuntu bionic/main DEP-11 64x64 Icons [245
kB]
Get:24 http://us.archive.ubuntu.com/ubuntu bionic/restricted amd64 Packages
[9184 B]
Get:25 http://us.archive.ubuntu.com/ubuntu bionic/restricted i386 Packages
[9156 B]
Get:26 http://us.archive.ubuntu.com/ubuntu bionic/restricted Translation-en
[3584 B]
Get:27 http://us.archive.ubuntu.com/ubuntu bionic/restricted Translation-en_GB
[2072 B]
Get:28 http://us.archive.ubuntu.com/ubuntu bionic/universe amd64 Packages [8570
kB]
Get:29 http://us.archive.ubuntu.com/ubuntu bionic/universe i386 Packages [8531
kB]
Get:30 http://us.archive.ubuntu.com/ubuntu bionic/universe Translation-en [4941
kB]
Get:31 http://us.archive.ubuntu.com/ubuntu bionic/universe Translation-en_GB
[4118 kB]
Get:32 http://us.archive.ubuntu.com/ubuntu bionic/universe amd64 DEP-11
Metadata [3287 kB]
Get:33 http://us.archive.ubuntu.com/ubuntu bionic/universe DEP-11 64x64 Icons
[8420 kB]
Get:34 http://us.archive.ubuntu.com/ubuntu bionic/multiverse amd64 Packages
[151 kB]
Get:35 http://us.archive.ubuntu.com/ubuntu bionic/multiverse i386 Packages [144
kB]
Get:36 http://us.archive.ubuntu.com/ubuntu bionic/multiverse Translation-en
[108 kB]
Get:37 http://us.archive.ubuntu.com/ubuntu bionic/multiverse Translation-en_GB
[82.1 kB]
Get:38 http://us.archive.ubuntu.com/ubuntu bionic/multiverse amd64 DEP-11
Metadata [49.7 kB]
Get:39 http://us.archive.ubuntu.com/ubuntu bionic/multiverse DEP-11 64x64 Icons
[225 kB]
Get:40 http://us.archive.ubuntu.com/ubuntu bionic-updates/main amd64 Packages
[303 kB]
Get:41 http://us.archive.ubuntu.com/ubuntu bionic-updates/main i386 Packages
[272 kB]
Get:42 http://us.archive.ubuntu.com/ubuntu bionic-updates/main Translation-en
[114 kB]
Get:43 http://us.archive.ubuntu.com/ubuntu bionic-updates/main amd64 DEP-11
Metadata [138 kB]
Get:44 http://us.archive.ubuntu.com/ubuntu bionic-updates/main DEP-11 64x64
Icons [53.7 kB]
Get:45 http://us.archive.ubuntu.com/ubuntu bionic-updates/universe amd64
Packages [173 kB]
Get:46 http://us.archive.ubuntu.com/ubuntu bionic-updates/universe i386
Packages [173 kB]
Get:47 http://us.archive.ubuntu.com/ubuntu bionic-updates/universe
Translation-en [80.0 kB]
Get:48 http://us.archive.ubuntu.com/ubuntu bionic-updates/universe amd64 DEP-11
Metadata [153 kB]
Get:49 http://us.archive.ubuntu.com/ubuntu bionic-updates/universe DEP-11 64x64
Icons [258 kB]
Get:50 http://us.archive.ubuntu.com/ubuntu bionic-updates/multiverse amd64
Packages [3772 B]
Get:51 http://us.archive.ubuntu.com/ubuntu bionic-updates/multiverse i386
Packages [3928 B]
Get:52 http://us.archive.ubuntu.com/ubuntu bionic-updates/multiverse
Translation-en [2376 B]
Get:53 http://us.archive.ubuntu.com/ubuntu bionic-updates/multiverse amd64
DEP-11 Metadata [2468 B]
Get:54 http://us.archive.ubuntu.com/ubuntu bionic-updates/multiverse DEP-11
64x64 Icons [2638 B]
Get:55 http://us.archive.ubuntu.com/ubuntu bionic-backports/universe amd64
Packages [2704 B]
Get:56 http://us.archive.ubuntu.com/ubuntu bionic-backports/universe i386
Packages [2704 B]
Get:57 http://us.archive.ubuntu.com/ubuntu bionic-backports/universe
Translation-en [1136 B]
Get:58 http://us.archive.ubuntu.com/ubuntu bionic-backports/universe amd64
DEP-11 Metadata [5100 B]
Get:59 http://us.archive.ubuntu.com/ubuntu bionic-backports/universe DEP-11
64x64 Icons [1789 B]
Fetched 45.1 MB in 6s (851 kB/s)
Checking package manager
Reading package lists... Done
Building dependency tree
Reading state information... Done
Calculating the changes
Calculating the changes
Could not determine 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
ProblemType: Bug
DistroRelease: Ubuntu 16.04
Package: ubuntu-release-upgrader-core 1:16.04.25
ProcVersionSignature: Ubuntu 4.15.0-33.36~16.04.1-generic 4.15.18
Uname: Linux 4.15.0-33-generic x86_64
NonfreeKernelModules: talpa_vfshook talpa_pedconnector talpa_pedevice
talpa_vcdevice talpa_core talpa_linux talpa_syscallhook
ApportVersion: 2.20.1-0ubuntu2.18
Architecture: amd64
CrashDB: ubuntu
CurrentDesktop: Unity
Date: Tue Aug 28 08:00:29 2018
InstallationDate: Installed on 2018-02-05 (203 days ago)
InstallationMedia: Ubuntu 16.04.3 LTS "Xenial Xerus" - Release amd64 (20170801)
PackageArchitecture: all
SourcePackage: ubuntu-release-upgrader
UpgradeStatus: Upgraded to xenial on 2018-08-28 (0 days ago)
** Affects: ubuntu-release-upgrader (Ubuntu)
Importance: Undecided
Status: New
** Tags: amd64 apport-bug dist-upgrade third-party-packages xenial
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https://bugs.launchpad.net/bugs/1789367
Title:
An unresolvable problem occurred while calculating the upgrade from
16.04 LTS to 18.04.1.
To manage notifications about this bug go to:
https://bugs.launchpad.net/ubuntu/+source/ubuntu-release-upgrader/+bug/1789367/+subscriptions
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