4 failures since March 24:

https://ci.wildfly.org/project.html?projectId=WF_PullRequest&buildTypeId=&tab=testDetails&testNameId=203710841948434674&order=TEST_STATUS_DESC&branch_WF_PullRequest=__all_branches__&itemsCount=50

I suspect this can be fixed by just increasing TIMEOUT from 15 secs to, say, 20. My impression is the particular timeout isn't super-important but it will take at least 9 secs to complete due to some sleeps in Bean.