Has only seed on Win-x64-debug so far. The failure seems to be intermittent.

The list of failed tests:

gc/g1/plab/TestPLABResize.java
gc/g1/plab/TestPLABPromotion.java

The failure messages, respectively:
java.lang.RuntimeException: Cannot find relevant PLAB statistics in the log
at gc.g1.plab.lib.LogParser.getSpecifiedStats(LogParser.java:203)
at gc.g1.plab.lib.LogParser.getSpecifiedStats(LogParser.java:174)
at gc.g1.plab.TestPLABPromotion.checkResults(TestPLABPromotion.java:134)
at gc.g1.plab.TestPLABPromotion.main(TestPLABPromotion.java:122)
at java.base/jdk.internal.reflect.DirectMethodHandleAccessor.invoke(DirectMethodHandleAccessor.java:104)
at java.base/java.lang.reflect.Method.invoke(Method.java:578)
at com.sun.javatest.regtest.agent.MainActionHelper$AgentVMRunnable.run(MainActionHelper.java:312)
at java.base/java.lang.Thread.run(Thread.java:1623)

... and

java.lang.RuntimeException: Expects for 15 PLAB entries in log, found 16
at gc.g1.plab.TestPLABResize.checkResults(TestPLABResize.java:120)
at gc.g1.plab.TestPLABResize.main(TestPLABResize.java:92)
at java.base/jdk.internal.reflect.DirectMethodHandleAccessor.invoke(DirectMethodHandleAccessor.java:104)
at java.base/java.lang.reflect.Method.invoke(Method.java:578)
at com.sun.javatest.regtest.agent.MainActionHelper$AgentVMRunnable.run(MainActionHelper.java:312)
at java.base/java.lang.Thread.run(Thread.java:1623)