perfschema.bad_option_5 failed in buildbot with timeout

perfschema.bad_option_5                  w4 [ fail ]  timeout after 900 seconds

        Test ended at 2017-10-11 14:43:23

Test case timeout after 900 seconds

== /dev/shm/var/4/log/bad_option_5.log == 

 == /dev/shm/var/4/tmp/analyze-timeout-mysqld.1.err ==

mysqltest: Could not open connection 'default' after 500 attempts: 2002 Can't connect to local MySQL server through socket '/dev/shm/var/tmp/4/mysqld.1.sock' (111)

 - skipping '/dev/shm/var/4/log/perfschema.bad_option_5/'

Retrying test perfschema.bad_option_5, attempt(2/3)...

worker[4] > Restart  - not started