package gconf2 3.2.6-3ubuntu5 failed to install/upgrade: problèmes de dépendances - actions différées non exécutées

[Emmanuel Di Pretoro]

When I was upgrading the system (with do-release-upgrade), I've encountered the following error:
dpkg: des problèmes de dépendances empêchent le traitement des actions différées pour gconf2 :
 gconf2 dépend de python3 ; cependant :
 Le paquet python3 n'est pas encore configuré.

dpkg: erreur de traitement du paquet gconf2 (--configure) :
 problèmes de dépendances - actions différées non exécutées
Error in function:

SystemError: E:Sub-process /usr/bin/dpkg returned an error code (1)
Error in sys.excepthook:
Traceback (most recent call last):
  File "/usr/lib/python3/dist-packages/problem_report.py", line 480, in add_to_existing
    self.write(f)
  File "/usr/lib/python3/dist-packages/problem_report.py", line 433, in write
    block = f.read(1048576)
  File "/usr/lib/python3.4/codecs.py", line 319, in decode
    (result, consumed) = self._buffer_decode(data, self.errors, final)
UnicodeDecodeError: 'utf-8' codec can't decode byte 0x8b in position 1: invalid start byte

Original exception was:
SystemError: E:Sub-process /usr/bin/dpkg returned an error code (1)
ERROR: Cannot create report: [Errno 17] File exists: '/var/crash/gconf2.0.crash'

ProblemType: Package
DistroRelease: Ubuntu 16.04
Package: gconf2 3.2.6-3ubuntu5
ProcVersionSignature: Ubuntu 4.2.0-36.42-generic 4.2.8-ckt8
Uname: Linux 4.2.0-36-generic x86_64
ApportVersion: 2.19.1-0ubuntu5
Architecture: amd64
Date: Tue May 31 10:05:41 2016
DuplicateSignature: package:gconf2:3.2.6-3ubuntu5:problèmes de dépendances - actions différées non exécutées
ErrorMessage: problèmes de dépendances - actions différées non exécutées
InstallationDate: Installed on 2016-01-12 (139 days ago)
InstallationMedia: Ubuntu 15.10 "Wily Werewolf" - Release amd64 (20151021)
RelatedPackageVersions:
 dpkg 1.18.4ubuntu1.1
 apt 1.2.10ubuntu1
SourcePackage: gconf
Title: package gconf2 3.2.6-3ubuntu5 failed to install/upgrade: problèmes de dépendances - actions différées non exécutées
UpgradeStatus: Upgraded to xenial on 2016-05-31 (0 days ago)

[Launchpad Janitor (janitor)]

Status changed to 'Confirmed' because the bug affects multiple users.

[Alberto Salvia Novella (es20490446e)]

Please:

1. Edit the description, so it includes what are the perceived consequences of the bug.
2. Set status back to "confirmed".

Thank you.

[Launchpad Janitor (janitor)]

[Expired for gconf (Ubuntu) because there has been no activity for 60 days.]