[Bug 1785498] Re: g_atomic_ref_count_dec: assertion 'g_atomic_int_get (arc) > 0' failed

[Oded Arbel]

Have the same issue upgrading from bionic to cosmic. Updating appstream
to the version from cosmic workedaround the problem.

Please backport fix to bionic so that other people will be able to
upgrade using the Ubuntu normal upgrade process.

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https://bugs.launchpad.net/bugs/1785498

Title:
  g_atomic_ref_count_dec: assertion 'g_atomic_int_get (arc) > 0' failed

Status in AppStream:
  Fix Released
Status in appstream package in Ubuntu:
  Fix Released
Status in glib2.0 package in Ubuntu:
  Invalid
Status in appstream package in Debian:
  Fix Released

Bug description:
  When running

    sudo apt update

  in a terminal I sometimes see the following message printed within the
  output.

    (appstreamcli:18640): GLib-CRITICAL **: 17:47:38.047:
  g_atomic_ref_count_dec: assertion 'g_atomic_int_get (arc) > 0' failed

  This started happening today (5th August). Otherwise apt update and
  apt upgrade seem to correctly update the system.

  ------------------------------

  https://gitlab.gnome.org/GNOME/glib/issues/1480

  ProblemType: Bug
  DistroRelease: Ubuntu 18.10
  Package: libglib2.0-0 2.57.2-1
  ProcVersionSignature: Ubuntu 4.17.0-6.7-generic 4.17.9
  Uname: Linux 4.17.0-6-generic x86_64
  ApportVersion: 2.20.10-0ubuntu7
  Architecture: amd64
  CurrentDesktop: GNOME
  Date: Sun Aug  5 17:52:41 2018
  InstallationDate: Installed on 2018-07-12 (24 days ago)
  InstallationMedia: Ubuntu 18.10 "Cosmic Cuttlefish" - Alpha amd64 (20180711)
  ProcEnviron:
   TERM=xterm-256color
   PATH=(custom, no user)
   XDG_RUNTIME_DIR=<set>
   LANG=en_GB.UTF-8
   SHELL=/bin/bash
  SourcePackage: glib2.0
  UpgradeStatus: No upgrade log present (probably fresh install)

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