package mysql-server-5.6 5.6.27-2+deb.sury.org~trusty+1 failed to install/upgrade: trying to overwrite '/usr/share/man/man1/innochecksum.1.gz', which is also in package mysql-server-core-5.6 5.6.27-2+deb.sury.org~trusty+1

M not a technical person...

ProblemType: Package
DistroRelease: Ubuntu 14.04
Package: mysql-server-5.6 5.6.27-2+deb.sury.org~trusty+1
ProcVersionSignature: Ubuntu 3.19.0-47.53~14.04.1-generic 3.19.8-ckt10
Uname: Linux 3.19.0-47-generic x86_64
ApportVersion: 2.14.1-0ubuntu3.19
Architecture: amd64
Date: Wed Jan 27 21:15:25 2016
DuplicateSignature: package:mysql-server-5.6:5.6.27-2+deb.sury.org~trusty+1:trying to overwrite '/usr/share/man/man1/innochecksum.1.gz', which is also in package mysql-server-core-5.6 5.6.27-2+deb.sury.org~trusty+1
ErrorMessage: trying to overwrite '/usr/share/man/man1/innochecksum.1.gz', which is also in package mysql-server-core-5.6 5.6.27-2+deb.sury.org~trusty+1
InstallationDate: Installed on 2016-01-16 (10 days ago)
InstallationMedia: Ubuntu 14.04.3 LTS "Trusty Tahr" - Beta amd64 (20150805)
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: ['mysql', 'ibdata1', 'ib_logfile0', 'performance_schema', 'debian-5.5.flag', 'auto.cnf', 'ib_logfile1', 'mysql_upgrade_info', 'debian-5.6.flag']
ProcCmdline: BOOT_IMAGE=/vmlinuz-3.19.0-47-generic root=/dev/mapper/ubuntu--vg-root ro quiet splash vt.handoff=7
RelatedPackageVersions:
 dpkg 1.17.5ubuntu5.5
 apt 1.0.1ubuntu2.10
SourcePackage: mysql-5.6
Title: package mysql-server-5.6 5.6.27-2+deb.sury.org~trusty+1 failed to install/upgrade: trying to overwrite '/usr/share/man/man1/innochecksum.1.gz', which is also in package mysql-server-core-5.6 5.6.27-2+deb.sury.org~trusty+1
UpgradeStatus: No upgrade log present (probably fresh install)