java.lang.AssertionError: 

Expected: is an empty collection
     but: <[oejh2.HTTP2Stream#1@40ccd03c{sendWindow=524288,recvWindow=8388608,queue=1,demand=false,reset=false/false,CLOSED,age=19,request=CONNECT{u=ws://localhost:45281/throw,HTTP/2.0,h=4,cl=-1,p=websocket},attachment=oejh2cti.HttpReceiverOverHTTP2@115549f3(ex=null,rsp=IDLE,failure=null)}]>
	at org.hamcrest.MatcherAssert.assertThat(MatcherAssert.java:20)
	at org.hamcrest.MatcherAssert.assertThat(MatcherAssert.java:6)
	at org.eclipse.jetty.websocket.tests.WebSocketOverHTTP2Test.testThrowFromCreator(WebSocketOverHTTP2Test.java:359)
	at java.base/java.lang.reflect.Method.invoke(Method.java:580)
	at java.base/java.util.concurrent.ForkJoinTask.doExec(ForkJoinTask.java:387)
	at java.base/java.util.concurrent.ForkJoinPool$WorkQueue.topLevelExec(ForkJoinPool.java:1312)
	at java.base/java.util.concurrent.ForkJoinPool.scan(ForkJoinPool.java:1843)
	at java.base/java.util.concurrent.ForkJoinPool.runWorker(ForkJoinPool.java:1808)
	at java.base/java.util.concurrent.ForkJoinWorkerThread.run(ForkJoinWorkerThread.java:188)

Running org.eclipse.jetty.websocket.tests.client.WebSocketClientTest.testCustomizeExecutorDirectly([2] true)