[Bug 1785352] [NEW] do-release-upgrade from 16.04 to 18.04 fails

[Jeremy Roth]

Public bug reported:

I removed all the non-essential sources from repos. Still fails without
giving details.

ProblemType: Bug
DistroRelease: Ubuntu 16.04
Package: ubuntu-release-upgrader-core 1:16.04.25
ProcVersionSignature: Ubuntu 4.4.0-131.157-generic 4.4.134
Uname: Linux 4.4.0-131-generic x86_64
ApportVersion: 2.20.1-0ubuntu2.18
Architecture: amd64
CrashDB: ubuntu
CurrentDesktop: KDE
Date: Fri Aug  3 21:15:19 2018
InstallationDate: Installed on 2013-11-07 (1730 days ago)
InstallationMedia: Kubuntu 13.10 "Saucy Salamander" - Release amd64 (20131016.1)
PackageArchitecture: all
SourcePackage: ubuntu-release-upgrader
UpgradeStatus: Upgraded to xenial on 2018-08-04 (0 days ago)
mtime.conffile..etc.update-manager.release-upgrades: 2018-08-03T18:46:18.509076

** Affects: ubuntu-release-upgrader (Ubuntu)
     Importance: Undecided
         Status: New


** Tags: amd64 apport-bug dist-upgrade xenial

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https://bugs.launchpad.net/bugs/1785352

Title:
  do-release-upgrade from 16.04 to 18.04 fails

Status in ubuntu-release-upgrader package in Ubuntu:
  New

Bug description:
  I removed all the non-essential sources from repos. Still fails
  without giving details.

  ProblemType: Bug
  DistroRelease: Ubuntu 16.04
  Package: ubuntu-release-upgrader-core 1:16.04.25
  ProcVersionSignature: Ubuntu 4.4.0-131.157-generic 4.4.134
  Uname: Linux 4.4.0-131-generic x86_64
  ApportVersion: 2.20.1-0ubuntu2.18
  Architecture: amd64
  CrashDB: ubuntu
  CurrentDesktop: KDE
  Date: Fri Aug  3 21:15:19 2018
  InstallationDate: Installed on 2013-11-07 (1730 days ago)
  InstallationMedia: Kubuntu 13.10 "Saucy Salamander" - Release amd64 (20131016.1)
  PackageArchitecture: all
  SourcePackage: ubuntu-release-upgrader
  UpgradeStatus: Upgraded to xenial on 2018-08-04 (0 days ago)
  mtime.conffile..etc.update-manager.release-upgrades: 2018-08-03T18:46:18.509076

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