[Bug 1828639] Autopkgtest regression report (dpkg/1.18.4ubuntu1.6)

[Łukasz Zemczak]

All autopkgtests for the newly accepted dpkg (1.18.4ubuntu1.6) for xenial have finished running.
There have been regressions in tests triggered by the package. Please visit the sru report page and investigate the failures.

https://people.canonical.com/~ubuntu-archive/pending-sru.html#xenial

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https://bugs.launchpad.net/bugs/1828639

Title:
  Unlooping all the trigger loops!!!!!

Status in dpkg package in Ubuntu:
  Fix Committed
Status in dpkg source package in Xenial:
  Fix Committed
Status in dpkg source package in Bionic:
  Fix Committed
Status in dpkg source package in Cosmic:
  Fix Committed
Status in dpkg source package in Disco:
  Fix Committed
Status in dpkg source package in Eoan:
  Fix Committed

Bug description:
  [Impact]
  Quite a few bugs in triggers can cause distro upgrades to abort.

  [Test case]
  For cosmic -> disco, install ubuntu-mate-desktop and then upgrade.

  For other releases, there might not be any test cases

  We should at least run some upgrade tests for a system with ubuntu-
  desktop installed.

  [Regression potential]
  New trigger bugs could of course be caused by the changes.

  [Original bug report]

  Encountered when upgrading from cosmic to disco with ubuntu-mate-
  desktop installed.

  ProblemType: Package
  DistroRelease: Ubuntu 19.04
  Package: libvlc-bin 3.0.6-1
  ProcVersionSignature: Ubuntu 5.0.0-13.14-generic 5.0.6
  Uname: Linux 5.0.0-13-generic x86_64
  ApportVersion: 2.20.10-0ubuntu27
  Architecture: amd64
  Date: Fri May 10 22:48:10 2019
  ErrorMessage: 90.8592:triggers looping, abandoned
  Python3Details: /usr/bin/python3.7, Python 3.7.3, python3-minimal, 3.7.3-1
  PythonDetails: /usr/bin/python2.7, Python 2.7.16, python-minimal, 2.7.16-1
  SourcePackage: vlc
  Title: package libvlc-bin 3.0.6-1 failed to install/upgrade: 90.8592:triggers looping, abandoned
  UpgradeStatus: Upgraded to disco on 2019-05-10 (0 days ago)

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