The Hibernate Search ElasticSearch test suite fails on two tests on my Windows machine(s):

ManualIndexingStrategyTest.testMultipleEntitiesPerIndex (trace: http://pastebin.com/sUZDmnAQ)
EdgeCaseFacetTest.testFacetingOnEmptyIndex (trace: http://pastebin.com/tMtMUv5i)

However if I run these manually, they work. Seems like some test running before these two causes them to break.