The following test failed in the JDK18 CI:

java/util/concurrent/forkjoin/AsyncShutdownNow.java

Here's a snippet from the log file:

----------System.out:(57/4650)----------
config AsyncShutdownNow.setup(): success
testFutureGet: java.util.concurrent.ForkJoinPool@7541c27e[Running, parallelism = 12, size = 0, active = 0, running = 0, steals = 0, tasks = 0, submissions = 0]
test AsyncShutdownNow.testFutureGet(java.util.concurrent.ForkJoinPool@7541c27e): failure
java.util.concurrent.CancellationException
at java.base/java.util.concurrent.ForkJoinTask.uncheckedThrow(ForkJoinTask.java:626)
at java.base/java.util.concurrent.ForkJoinTask.reportExecutionException(ForkJoinTask.java:606)
at java.base/java.util.concurrent.ForkJoinTask.get(ForkJoinTask.java:981)
at AsyncShutdownNow.testFutureGet(AsyncShutdownNow.java:104)
at java.base/jdk.internal.reflect.DirectMethodHandleAccessor.invoke(DirectMethodHandleAccessor.java:104)
at java.base/java.lang.reflect.Method.invoke(Method.java:577)
at org.testng.internal.MethodInvocationHelper.invokeMethod(MethodInvocationHelper.java:132)
at org.testng.internal.TestInvoker.invokeMethod(TestInvoker.java:599)
at org.testng.internal.TestInvoker.invokeTestMethod(TestInvoker.java:174)
at org.testng.internal.MethodRunner.runInSequence(MethodRunner.java:46)
at org.testng.internal.TestInvoker$MethodInvocationAgent.invoke(TestInvoker.java:822)
at org.testng.internal.TestInvoker.invokeTestMethods(TestInvoker.java:147)
at org.testng.internal.TestMethodWorker.invokeTestMethods(TestMethodWorker.java:146)
at org.testng.internal.TestMethodWorker.run(TestMethodWorker.java:128)
at java.base/java.util.ArrayList.forEach(ArrayList.java:1511)
at org.testng.TestRunner.privateRun(TestRunner.java:764)
at org.testng.TestRunner.run(TestRunner.java:585)
at org.testng.SuiteRunner.runTest(SuiteRunner.java:384)
at org.testng.SuiteRunner.runSequentially(SuiteRunner.java:378)
at org.testng.SuiteRunner.privateRun(SuiteRunner.java:337)
at org.testng.SuiteRunner.run(SuiteRunner.java:286)
at org.testng.SuiteRunnerWorker.runSuite(SuiteRunnerWorker.java:53)
at org.testng.SuiteRunnerWorker.run(SuiteRunnerWorker.java:96)
at org.testng.TestNG.runSuitesSequentially(TestNG.java:1218)
at org.testng.TestNG.runSuitesLocally(TestNG.java:1140)
at org.testng.TestNG.runSuites(TestNG.java:1069)
at org.testng.TestNG.run(TestNG.java:1037)
at com.sun.javatest.regtest.agent.TestNGRunner.main(TestNGRunner.java:94)
at java.base/jdk.internal.reflect.DirectMethodHandleAccessor.invoke(DirectMethodHandleAccessor.java:104)
at java.base/java.lang.reflect.Method.invoke(Method.java:577)
at com.sun.javatest.regtest.agent.MainActionHelper$AgentVMRunnable.run(MainActionHelper.java:312)
at java.base/java.lang.Thread.run(Thread.java:833)
testFutureGet: java.util.concurrent.ForkJoinPool@49ac73fc[Running, parallelism = 1, size = 0, active = 0, running = 0, steals = 0, tasks = 0, submissions = 0]
test AsyncShutdownNow.testFutureGet(java.util.concurrent.ForkJoinPool@49ac73fc): success
testInvokeAll: java.util.concurrent.ForkJoinPool@5fe42293[Running, parallelism = 12, size = 0, active = 0, running = 0, steals = 0, tasks = 0, submissions = 0]
test AsyncShutdownNow.testInvokeAll(java.util.concurrent.ForkJoinPool@5fe42293): success
testInvokeAll: java.util.concurrent.ForkJoinPool@3eae040c[Running, parallelism = 1, size = 0, active = 0, running = 0, steals = 0, tasks = 0, submissions = 0]
test AsyncShutdownNow.testInvokeAll(java.util.concurrent.ForkJoinPool@3eae040c): success
testInvokeAny: java.util.concurrent.ForkJoinPool@32ca09b0[Running, parallelism = 12, size = 0, active = 0, running = 0, steals = 0, tasks = 0, submissions = 0]
test AsyncShutdownNow.testInvokeAny(java.util.concurrent.ForkJoinPool@32ca09b0): success
testInvokeAny: java.util.concurrent.ForkJoinPool@17a68c40[Running, parallelism = 1, size = 0, active = 0, running = 0, steals = 0, tasks = 0, submissions = 0]
test AsyncShutdownNow.testInvokeAny(java.util.concurrent.ForkJoinPool@17a68c40): success
testTimedFutureGet: java.util.concurrent.ForkJoinPool@5ef65e1e[Running, parallelism = 12, size = 0, active = 0, running = 0, steals = 0, tasks = 0, submissions = 0]
test AsyncShutdownNow.testTimedFutureGet(java.util.concurrent.ForkJoinPool@5ef65e1e): success
testTimedFutureGet: java.util.concurrent.ForkJoinPool@145d3a2e[Running, parallelism = 1, size = 0, active = 0, running = 0, steals = 0, tasks = 0, submissions = 0]
test AsyncShutdownNow.testTimedFutureGet(java.util.concurrent.ForkJoinPool@145d3a2e): success
config AsyncShutdownNow.teardown(): success

===============================================
java/util/concurrent/forkjoin/AsyncShutdownNow.java
Total tests run: 8, Passes: 7, Failures: 1, Skips: 0
===============================================

----------System.err:(10/537)----------
java.lang.Exception: failures: 1
at com.sun.javatest.regtest.agent.TestNGRunner.main(TestNGRunner.java:96)
at java.base/jdk.internal.reflect.DirectMethodHandleAccessor.invoke(DirectMethodHandleAccessor.java:104)
at java.base/java.lang.reflect.Method.invoke(Method.java:577)
at com.sun.javatest.regtest.agent.MainActionHelper$AgentVMRunnable.run(MainActionHelper.java:312)
at java.base/java.lang.Thread.run(Thread.java:833)

JavaTest Message: Test threw exception: java.lang.Exception
JavaTest Message: shutting down test

result: Failed. Execution failed: `main' threw exception: java.lang.Exception: failures: 1