ConcurrentClassDescLookup.java times out intermittently

The following test times out intermittently in the JDK13 CI:

java/io/Serializable/concurrentClassDescLookup/ConcurrentClassDescLookup.java

Here's a snippet from the log file:

#section:main
----------messages:(8/262)----------
command: main ConcurrentClassDescLookup
reason: Assumed action based on file name: run main ConcurrentClassDescLookup
Mode: agentvm
Agent id: 10
Timeout refired 480 times
Timeout information:
--- Timeout information end.
elapsed time (seconds): 512.412
----------configuration:(9/771)*----------
Boot Layer
  class path: C:\\ade\\mesos\\work_dir\\jib-master\\install\\java\\re\\jtreg\\4.2\\promoted\\all\\b14\\bundles\\jtreg_bin-4.2.zip\\jtreg\\lib\\javatest.jar
              C:\\ade\\mesos\\work_dir\\jib-master\\install\\java\\re\\jtreg\\4.2\\promoted\\all\\b14\\bundles\\jtreg_bin-4.2.zip\\jtreg\\lib\\jtreg.jar
  patch: java.base T:\\testoutput\\test-support\\jtreg_open_test_jdk_tier2_part2\\patches\\java.base

Test Layer
  class path: T:\\testoutput\\test-support\\jtreg_open_test_jdk_tier2_part2\\classes\\2\\java\\io\\Serializable\\concurrentClassDescLookup\\ConcurrentClassDescLookup.d
              C:\\ade\\mesos\\work_dir\\jib-master\\install\\jdk13-jdk.880\\src.full\\open\\test\\jdk\\java\\io\\Serializable\\concurrentClassDescLookup

----------rerun:(32/4277)*----------