package unattended-upgrades 0.90ubuntu0.6 failed to install/upgrade: subprocess installed post-installation script returned error exit status 1

[Richard Scott]

No further information to provide, this bug report was submitted automatically.

ProblemType: Package
DistroRelease: Ubuntu 16.04
Package: unattended-upgrades 0.90ubuntu0.6
ProcVersionSignature: Ubuntu 4.4.0-78.99-generic 4.4.62
Uname: Linux 4.4.0-78-generic x86_64
ApportVersion: 2.20.1-0ubuntu2.5
Architecture: amd64
Date: Fri May 19 08:43:02 2017
ErrorMessage: subprocess installed post-installation script returned error exit status 1
InstallationDate: Installed on 2016-09-08 (255 days ago)
InstallationMedia: Ubuntu-Server 16.04.1 LTS "Xenial Xerus" - Release amd64 (20160719)
PackageArchitecture: all
RelatedPackageVersions:
 dpkg 1.18.4ubuntu1.2
 apt 1.2.20
SourcePackage: unattended-upgrades
Title: package unattended-upgrades 0.90ubuntu0.6 failed to install/upgrade: subprocess installed post-installation script returned error exit status 1
UpgradeStatus: No upgrade log present (probably fresh install)
modified.conffile..etc.apt.apt.conf.d.10periodic:
 APT::Periodic::Update-Package-Lists "1";
 APT::Periodic::Download-Upgradeable-Packages "1";
 APT::Periodic::AutocleanInterval "7";
 APT::Periodic::Unattended-Upgrade "1";
modified.conffile..etc.apt.apt.conf.d.99update-notifier:
 #DPkg::Post-Invoke {"if [ -d /var/lib/update-notifier ]; then touch /var/lib/update-notifier/dpkg-run-stamp; fi; /usr/lib/update-notifier/update-motd-updates-available 2>/dev/null || true";};
 #APT::Update::Post-Invoke-Success {"/usr/lib/update-notifier/update-motd-updates-available 2>/dev/null || true";};
mtime.conffile..etc.apt.apt.conf.d.10periodic: 2017-01-07T17:02:35.486143
mtime.conffile..etc.apt.apt.conf.d.99update-notifier: 2016-11-16T17:39:04.061871

[Launchpad Janitor (janitor)]

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