http://redash.gitlab.com/queries/15#table seems to report the double of the actual spec file duration?

If you look at https://gitlab.com/gitlab-org/gitlab-ce/builds/11450011 you will see:

"spec/services/notification_service_spec.rb": 368.872718334198,

but if you look at http://redash.gitlab.com/queries/15#table you will see:

FILE	BRANCH	TOTAL_TIME	TOTAL_QUERIES	TOTAL_QUERY_TIME	TOTAL_REQUESTS
./spec/services/notification_service_spec.rb	master	759.19	87,247	118.76	0

This seems to be a bit more than the double (368*2 = 736), we should investigate what's wrong.