package mysql-server-5.7 5.7.13-0ubuntu0.16.04.2 failed to install/upgrade: subprocess installed post-installation script returned error exit status 1

[יהודה]

..

ProblemType: Package
DistroRelease: Ubuntu 16.04
Package: mysql-server-5.7 5.7.13-0ubuntu0.16.04.2
ProcVersionSignature: Ubuntu 4.4.0-31.50-generic 4.4.13
Uname: Linux 4.4.0-31-generic x86_64
NonfreeKernelModules: nvidia_uvm nvidia_modeset nvidia
ApportVersion: 2.20.1-0ubuntu2.1
Architecture: amd64
Date: Fri Jul 22 02:51:38 2016
ErrorMessage: subprocess installed post-installation script returned error exit status 1
InstallationDate: Installed on 2015-05-21 (427 days ago)
InstallationMedia: Ubuntu 15.04 "Vivid Vervet" - Release amd64 (20150422)
Logs.var.log.daemon.log:

MySQLConf.etc.mysql.conf.d.mysql.cnf: [mysql]
MySQLConf.etc.mysql.conf.d.mysqldump.cnf:
 [mysqldump]
 quick
 quote-names
 max_allowed_packet = 16M
MySQLConf.etc.mysql.mysql.conf.d.mysqld_safe_syslog.cnf:
 [mysqld_safe]
 syslog
MySQLVarLibDirListing: ['ib_logfile0', 'sys', 'ib_logfile1', 'test', 'mysql_upgrade_info', 'mysql', 'performance_schema', 'debian-5.7.flag', 'zooz', 'auto.cnf', 'debian-5.6.flag', 'ib_buffer_pool', 'ibdata1']
ProcCmdline: BOOT_IMAGE=/boot/vmlinuz-4.4.0-31-generic root=UUID=8cebe92f-6df9-40eb-a395-711377e6f0f2 ro quiet splash vt.handoff=7
RelatedPackageVersions:
 dpkg 1.18.4ubuntu1.1
 apt 1.2.12~ubuntu16.04.1
SourcePackage: mysql-5.7
Title: package mysql-server-5.7 5.7.13-0ubuntu0.16.04.2 failed to install/upgrade: subprocess installed post-installation script returned error exit status 1
UpgradeStatus: Upgraded to xenial on 2016-05-03 (79 days ago)
modified.conffile..etc.init.mysql.conf: [modified]
mtime.conffile..etc.init.mysql.conf: 2016-06-24T15:05:21.909182

[Launchpad Janitor (janitor)]

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

[Ivo Wever (ivo-wever)]

Likely duplicate of https://bugs.launchpad.net/ubuntu/+source/mysql-5.7/+bug/1605346, although I think the cause identified there may be too specific.