Ubuntu do-release-upgrade 14.04 to 16.04.1 had problem with roundcube because MySQL was stopped during upgrade package roundcube-core 1.2~beta+dfsg.1-0ubuntu1 failed to install/upgrade: subprocess installed post-installation script returned error exit status 1

[D Tim Cummings]

I think the problem was roundcube could not upgrade MySQL database because MySQL was not running during the upgrade

ProblemType: Package
DistroRelease: Ubuntu 16.04
Package: roundcube-core 1.2~beta+dfsg.1-0ubuntu1
ProcVersionSignature: Ubuntu 3.13.0-95.142-generic 3.13.11-ckt39
Uname: Linux 3.13.0-95-generic x86_64
ApportVersion: 2.20.1-0ubuntu2.1
Architecture: amd64
Date: Sun Sep 18 04:47:56 2016
ErrorMessage: subprocess installed post-installation script returned error exit status 1
InstallationDate: Installed on 2014-08-27 (752 days ago)
InstallationMedia: Ubuntu-Server 14.04.1 LTS "Trusty Tahr" - Release amd64 (20140722.3)
PackageArchitecture: all
RelatedPackageVersions:
 dpkg 1.18.4ubuntu1.1
 apt 1.2.12~ubuntu16.04.1
SourcePackage: roundcube
Title: package roundcube-core 1.2~beta+dfsg.1-0ubuntu1 failed to install/upgrade: subprocess installed post-installation script returned error exit status 1
UpgradeStatus: Upgraded to xenial on 2016-09-18 (0 days ago)

[Launchpad Janitor (janitor)]

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