package mysql-server-5.7 5.7.11-0ubuntu6 failed to install/upgrade: sub-processo script post-installation instalado retornou estado de saída de erro 1

Problem happens after an $ apt dist-upgrade

ProblemType: Package
DistroRelease: Ubuntu 16.04
Package: mysql-server-5.7 5.7.11-0ubuntu6
ProcVersionSignature: Ubuntu 4.4.0-21.37-generic 4.4.6
Uname: Linux 4.4.0-21-generic i686
ApportVersion: 2.20.1-0ubuntu2
Architecture: i386
Date: Sat Apr 23 12:58:55 2016
ErrorMessage: sub-processo script post-installation instalado retornou estado de saída de erro 1
InstallationDate: Installed on 2016-03-27 (26 days ago)
InstallationMedia: Ubuntu 16.04 LTS "Xenial Xerus" - Beta i386 (20160323)
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: ['devnote.pid', 'jwmeeter', 'debian-5.6.flag', 'performance_schema', 'mysql_upgrade_info', 'auto.cnf', 'mysql', 'ibtmp1', 'sys', 'ibdata1', 'ib_buffer_pool', 'debian-5.7.flag', 'ib_logfile1', 'ib_logfile0', 'phpmyadmin']
ProcCmdline: BOOT_IMAGE=/boot/vmlinuz-4.4.0-21-generic root=UUID=3bde200a-4176-48db-926e-b9a664d126b6 ro persistent quiet splash vt.handoff=7
RelatedPackageVersions:
 dpkg 1.18.4ubuntu1
 apt 1.2.10ubuntu1
SourcePackage: mysql-5.7
Title: package mysql-server-5.7 5.7.11-0ubuntu6 failed to install/upgrade: sub-processo script post-installation instalado retornou estado de saída de erro 1
UpgradeStatus: No upgrade log present (probably fresh install)
upstart.mysql.override: manual