Test: serviceability/dcmd/vm/ClassLoaderHierarchyTest.java
OS: failure is observed on Windows x64, Linux x64, Mac OS x64
Is it a Regression: Intermittent failure (can't say)

Partial log:

----------System.err:(30/1308)----------
 stdout: [+-- <bootstrap>
      |
      +-- "platform", jdk.internal.loader.ClassLoaders$PlatformClassLoader
      | |
      | +-- "app", jdk.internal.loader.ClassLoaders$AppClassLoader
      | |
      | +-- java.net.URLClassLoader (+ 1 more)
      |
      +-- jdk.internal.reflect.DelegatingClassLoader
      |
      +-- ClassLoaderHierarchyTest$TestClassLoader
            |
            +-- "Bill", ClassLoaderHierarchyTest$TestClassLoader
                        
];
 stderr: []
 exitValue = -1

java.lang.Exception: failures: 1
at com.sun.javatest.regtest.agent.TestNGRunner.main(TestNGRunner.java:96)
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:566)
at com.sun.javatest.regtest.agent.MainActionHelper$AgentVMRunnable.run(MainActionHelper.java:298)
at java.base/java.lang.Thread.run(Thread.java:834)

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


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