package redmine 3.0~20140825-8 failed to install/upgrade: subprocess installed post-installation script returned error exit status 7

[Alex Shulgin]

Plain `sudo apt-get install redmine` on a fresh 15.10.

ProblemType: Package
DistroRelease: Ubuntu 15.10
Package: redmine 3.0~20140825-8
ProcVersionSignature: Ubuntu 4.2.0-19.23-generic 4.2.6
Uname: Linux 4.2.0-19-generic x86_64
ApportVersion: 2.19.1-0ubuntu5
Architecture: amd64
Date: Mon Dec 14 10:43:24 2015
ErrorMessage: subprocess installed post-installation script returned error exit status 7
InstallationDate: Installed on 2015-12-07 (6 days ago)
InstallationMedia: Ubuntu-GNOME 15.04 "Vivid Vervet" - Release amd64 (20150422)
PackageArchitecture: all
RelatedPackageVersions:
 dpkg 1.18.2ubuntu5.1
 apt 1.0.10.2ubuntu1
SourcePackage: redmine
Title: package redmine 3.0~20140825-8 failed to install/upgrade: subprocess installed post-installation script returned error exit status 7
UpgradeStatus: Upgraded to wily on 2015-12-07 (6 days ago)

[Launchpad Janitor (janitor)]

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