This test is failing frequently in the loom repo, both with and without the jtreg main wrapper. The typical output is:

----------System.out:(24/1324)----------
Writable dir is: /testoutput/test-support/jtreg_open_test_jdk_jdk_util/tmp/writable-lockfile-dir
before: 0 locks found
handler created: java.util.logging.FileHandler@50bbb838
Found file: log.log.lck
Found file: log.log
after creating handler: 1 locks found
Found file: log.log
after closing handler: 0 locks found
Found file: log.log
Found file: log.log.lck
before: 1 locks found
handler created: java.util.logging.FileHandler@1615f0bf
Found file: log.log
Found file: log.log.lck
after creating handler: 1 locks found
handler closed: java.util.logging.FileHandler@1615f0bf
Found file: log.log
after closing handler: 0 locks found
locked: /testoutput/test-support/jtreg_open_test_jdk_jdk_util/tmp/writable-lockfile-dir/log.log.lck
handler created: java.util.logging.FileHandler@fe2e7ec
Found file: log.log
Found file: log.log.lck
after creating handler: 1 locks found
end: 0 locks found
----------System.err:(16/2176)----------
WARNING: unable to delete/cleanup writable test directory: /testoutput/test-support/jtreg_open_test_jdk_jdk_util/tmp/writable-lockfile-dir
java.lang.RuntimeException: Unexpected lock files found: []
/testoutput/test-support/jtreg_open_test_jdk_jdk_util/tmp/writable-lockfile-dir/log.log.lck should not have been reused
at CheckZombieLockTest.testFileHandlerReuse(CheckZombieLockTest.java:257)
at CheckZombieLockTest.runTests(CheckZombieLockTest.java:105)
at CheckZombieLockTest.main(CheckZombieLockTest.java:78)
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.MainWrapper$MainThread.run(MainWrapper.java:127)
at java.base/java.lang.Thread.run(Thread.java:1532)