package python3-distupgrade 1:15.04.6 failed to install/upgrade: Unterprozess installiertes post-installation-Skript gab den Fehlerwert 1 zurück

[LAZA]

failed to do a

~$ sudo apt-get update && sudo apt-get upgrade && sudo apt-get dist-upgrade

in Xubuntu Vivid

ProblemType: Package
DistroRelease: Ubuntu 15.04
Package: python3-distupgrade 1:15.04.6
ProcVersionSignature: Ubuntu 3.18.0-13.14-generic 3.18.5
Uname: Linux 3.18.0-13-generic i686
ApportVersion: 2.16.1-0ubuntu2
Architecture: i386
CrashDB: ubuntu
Date: Wed Feb 18 19:06:28 2015
DuplicateSignature: package:python3-distupgrade:1:15.04.6:Unterprozess installiertes post-installation-Skript gab den Fehlerwert 1 zurück
ErrorMessage: Unterprozess installiertes post-installation-Skript gab den Fehlerwert 1 zurück
InstallationDate: Installed on 2014-12-12 (68 days ago)
InstallationMedia: Xubuntu 14.10 "Utopic Unicorn" - Release i386 (20141022.1)
PackageArchitecture: all
SourcePackage: ubuntu-release-upgrader
Title: package python3-distupgrade 1:15.04.6 failed to install/upgrade: Unterprozess installiertes post-installation-Skript gab den Fehlerwert 1 zurück
UpgradeStatus: Upgraded to vivid on 2014-12-16 (63 days ago)
VarLogDistupgradeTermlog: