The following test failure has been spotted in the JDK13 CI:

vmTestbase/nsk/jdi/EventQueue/remove/remove004/TestDescription.java

Here's a snippet of the log file:

==> nsk/jdi/EventQueue/remove/remove004 new check: # 0
debugee.stderr> **> debuggee: before: Thread.sleep
--> debugger: thread2 is created
--> debugger: before: thread2.start()
--> debugger: before: waitnotifyObj.wait();
--> debugger: -----t2: method 'run' enter
--> debugger: -----t2: entered into block: synchronized (waitnotifyObj)
--> debugger: -----t2: exited from block: synchronized (waitnotifyObj)
--> debugger: mainThread is out of: synchronized (lockingObject)
--> debugger: -----t2: entered into block: synchronized (lockingObject)
--> debugger: -----t2: exited from block: synchronized (lockingObject)
--> debugger: -----t2: eventSet = eventQueue.remove(); expects: InterruptedException
--> debugger: -----t2: InterruptedException
--> debugger: -----t2: method 'run' exit
debugee.stderr> **> debuggee: after: Thread.sleep
--> debugger: breakpointForCommunication
# ERROR: ##> debugger: ERROR: VMDisconnectedException : com.sun.jdi.VMDisconnectedException
The following stacktrace is for failure analysis.
nsk.share.TestFailure: ##> debugger: ERROR: VMDisconnectedException : com.sun.jdi.VMDisconnectedException
at nsk.share.Log.logExceptionForFailureAnalysis(Log.java:428)
at nsk.share.Log.complain(Log.java:399)
at nsk.jdi.EventQueue.remove.remove004.log3(remove004.java:120)
at nsk.jdi.EventQueue.remove.remove004.runTest(remove004.java:262)
at nsk.jdi.EventQueue.remove.remove004.runThis(remove004.java:195)
at nsk.jdi.EventQueue.remove.remove004.run(remove004.java:101)
at nsk.jdi.EventQueue.remove.remove004.main(remove004.java:94)
at java.base/jdk.internal.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
at java.base/jdk.internal.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:62)
at java.base/jdk.internal.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
at java.base/java.lang.reflect.Method.invoke(Method.java:567)
at PropertyResolvingWrapper.main(PropertyResolvingWrapper.java:104)
at java.base/jdk.internal.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
at java.base/jdk.internal.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:62)
at java.base/jdk.internal.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
at java.base/java.lang.reflect.Method.invoke(Method.java:567)
at com.sun.javatest.regtest.agent.MainWrapper$MainThread.run(MainWrapper.java:127)
at java.base/java.lang.Thread.run(Thread.java:835)
# ERROR: ##> debugger: test cancelled due to VMDisconnectedException
--> debugger: ......trying: vm.process().destroy();
TEST FAILED


#>
#> SUMMARY: Following errors occured
#> during test execution:
#>
# ERROR: ##> debugger: ERROR: VMDisconnectedException : com.sun.jdi.VMDisconnectedException
# ERROR: ##> debugger: test cancelled due to VMDisconnectedException
----------System.err:(0/0)----------

So far I have only seen this failure mode on Win*.