org.jboss.resteasy.test.providers.sse.SseTest (integration-tests) and org.jboss.resteasy.test.asyncio.SSETest (resteasy-vertx) are failing quite frequently now on travis. I believe the frequency of the failures increased at around the time of the 4.5.1.Final release, which would suggest a relationship with the async I/O changes, but this needs to be verified.