If the child process exits due to some error condition, stdout/stderr are not logged. This makes it difficult to analyze test failures:

----------System.out:(2/885)----------
Jar file created: .../scratch/0/test.jar
Command line: ['...jdk-17/fastdebug/bin/java' '-cp' '.../scratch/0/test.jar' '-XX:+RecordDynamicDumpInfo' 'LingeredTestApp' 'ff2d248f-3d32-4206-b040-3ba07d974ed6.lck']
----------System.err:(18/1110)----------
java.io.IOException: App exited unexpectedly with 1
at jdk.test.lib.apps.LingeredApp.waitAppReady(LingeredApp.java:279)
at jdk.test.lib.apps.LingeredApp.waitAppReady(LingeredApp.java:295)
at jdk.test.lib.apps.LingeredApp.startAppExactJvmOpts(LingeredApp.java:421)
at JCmdTest.createLingeredApp(JCmdTest.java:92)
at JCmdTest.test_static(JCmdTest.java:153)
at JCmdTest.main(JCmdTest.java:208)
at java.base/jdk.internal.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
at java.base/jdk.internal.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:78)
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.MainWrapper$MainThread.run(MainWrapper.java:127)
at java.base/java.lang.Thread.run(Thread.java:831)

JavaTest Message: Test threw exception: java.io.IOException: App exited unexpectedly with 1
JavaTest Message: shutting down test

STATUS:Failed.`main' threw exception: java.io.IOException: App exited unexpectedly with 1
----------rerun:(37/8657)*----------