The following test failed in the JDK15 CI:

jdk/jfr/event/runtime/TestThreadStartEndEvents.java

Here's a snippet from the log file:

----------System.err:(17/1148)----------
java.lang.RuntimeException: Wrong thread id: expected 29 to equal 28
at jdk.test.lib.Asserts.fail(Asserts.java:594)
at jdk.test.lib.Asserts.assertEquals(Asserts.java:205)
at jdk.test.lib.jfr.Events.assertThread(Events.java:238)
at jdk.test.lib.jfr.Events.assertEventThread(Events.java:186)
at jdk.jfr.event.runtime.TestThreadStartEndEvents.main(TestThreadStartEndEvents.java:79)
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:564)
at com.sun.javatest.regtest.agent.MainWrapper$MainThread.run(MainWrapper.java:127)
at java.base/java.lang.Thread.run(Thread.java:832)

JavaTest Message: Test threw exception: java.lang.RuntimeException: Wrong thread id: expected 29 to equal 28
JavaTest Message: shutting down test

STATUS:Failed.`main' threw exception: java.lang.RuntimeException: Wrong thread id: expected 29 to equal 28
----------rerun:(43/5112)*----------