package mysql-server-5.6 (not installed) failed to install/upgrade: subprocesso novo script pre-installation retornou erro do status de saída 1

[Fabio Hernandez]

Foram encontrados erros enquanto processava:
 /var/cache/apt/archives/mysql-server-5.6_5.6.16-1~exp1_amd64.deb
E: Sub-process /usr/bin/dpkg returned an error code (1)

ProblemType: Package
DistroRelease: Ubuntu 16.04
Package: mysql-server-5.6 (not installed)
ProcVersionSignature: Ubuntu 4.8.0-46.49~16.04.1-generic 4.8.17
Uname: Linux 4.8.0-46-generic x86_64
ApportVersion: 2.20.1-0ubuntu2.5
Architecture: amd64
Date: Sat Apr 8 14:16:05 2017
ErrorMessage: subprocesso novo script pre-installation retornou erro do status de saída 1
InstallationDate: Installed on 2017-04-06 (2 days ago)
InstallationMedia: Ubuntu 16.04.2 LTS "Xenial Xerus" - Release amd64 (20170215.2)
RelatedPackageVersions:
 dpkg 1.18.4ubuntu1.1
 apt 1.2.19
SourcePackage: mysql-5.6
Title: package mysql-server-5.6 (not installed) failed to install/upgrade: subprocesso novo script pre-installation retornou erro do status de saída 1
UpgradeStatus: No upgrade log present (probably fresh install)

[Joshua Powers (powersj)]

From log:

Aborting downgrade from (at least) 5.7 to 5.6.
If are sure you want to downgrade to 5.6, remove the file
/var/lib/mysql/debian-*.flag and try installing again.

[Joshua Powers (powersj)]

Thank you for taking the time to file a bug report.

Per the log message above, the mysql install has failed because you are
attempting to downgrade the version. If you really do wish to do this, then
follow the steps in the message to force the downgrade. However, be warned
this may cause unexpected behavior.

Since it seems likely to me that this is a local configuration problem,
rather than a bug in Ubuntu, I am marking this bug as 'Incomplete'.

However, if you believe that this is really a bug in Ubuntu, then we would
be grateful if you would provide a more complete description of the problem
with steps to reproduce, explain why you believe this is a bug in Ubuntu
rather than a problem specific to your system, and then change the bug
status back to "New".

For local configuration issues, you can find assistance here:
http://www.ubuntu.com/support/community

[Launchpad Janitor (janitor)]

[Expired for mysql-5.6 (Ubuntu) because there has been no activity for 60 days.]