Setting up mysql-client-5.5 (5.5.35+dfsg-0+wheezy1) ...
Setting up mysql-server-5.5 (5.5.35+dfsg-0+wheezy1) ...
[ ok ] Stopping MySQL database server: mysqld.
[FAIL] Starting MySQL database server: mysqld . . . . . . . . . . . . . . failed!
invoke-rc.d: initscript mysql, action "start" failed.
dpkg: error processing mysql-server-5.5 (--configure):
 subprocess installed post-installation script returned error exit status 1