JDK20 b27 ATR windows 8.1

----------messages:(8/293)----------
command: main Skynet
reason: User specified action: run main/othervm/timeout=300 Skynet
started: Wed Dec 28 16:23:04 ICT 2022
Mode: othervm [/othervm specified]
Timeout information:
--- Timeout information end.
finished: Thu Dec 29 09:32:24 ICT 2022
elapsed time (seconds): 61759.425
----------configuration:(0/0)----------
----------System.out:(12/564)*----------
Result: 499999500000 in 5406 ms
Result: 499999500000 in 5903 ms
Result: 499999500000 in 3907 ms
Result: 499999500000 in 4297 ms
Result: 499999500000 in 4256 ms
Result: 499999500000 in 4734 ms
Result: 499999500000 in 8547 ms
Result: 499999500000 in 5453 ms
Result: 499999500000 in 4406 ms
Timeout refired 3000 times
[3477.271s][error][attach] could not open (2) pipe \\\\.\\pipe\\javatool443537417 to send result of operation jcmd
[3571.996s][error][attach] could not open (2) pipe \\\\.\\pipe\\javatool-758853121 to send result of operation threaddump
----------System.err:(0/0)----------

main test thread stuck in a park

MainThread" #21 [4720] prio=5 os_prio=0 cpu=62.50ms elapsed=3599.88s allocated=949K defined_classes=69 tid=0x000000c255e9cb10 nid=4720 waiting on condition [0x000000c25657e000]
   java.lang.Thread.State: WAITING (parking)
at jdk.internal.misc.Unsafe.park(java.base@20-ea/Native Method)
- parking to wait for <0x00000000e14f11a0> (a java.util.concurrent.SynchronousQueue$TransferStack)
at java.util.concurrent.locks.LockSupport.park(java.base@20-ea/LockSupport.java:371)
at java.util.concurrent.SynchronousQueue$TransferStack$SNode.block(java.base@20-ea/SynchronousQueue.java:288)
at java.util.concurrent.ForkJoinPool.unmanagedBlock(java.base@20-ea/ForkJoinPool.java:3780)
at java.util.concurrent.ForkJoinPool.managedBlock(java.base@20-ea/ForkJoinPool.java:3725)
at java.util.concurrent.SynchronousQueue$TransferStack.transfer(java.base@20-ea/SynchronousQueue.java:397)
at java.util.concurrent.SynchronousQueue.take(java.base@20-ea/SynchronousQueue.java:886)
at Skynet$Channel.receive(Skynet.java:109)
at Skynet.skynet(Skynet.java:59)
at Skynet.main(Skynet.java:49)
at java.lang.invoke.LambdaForm$DMH/0x0000000801002000.invokeStatic(java.base@20-ea/LambdaForm$DMH)
at java.lang.invoke.LambdaForm$MH/0x0000000801003400.invoke(java.base@20-ea/LambdaForm$MH)
at java.lang.invoke.Invokers$Holder.invokeExact_MT(java.base@20-ea/Invokers$Holder)
at jdk.internal.reflect.DirectMethodHandleAccessor.invokeImpl(java.base@20-ea/DirectMethodHandleAccessor.java:155)
at jdk.internal.reflect.DirectMethodHandleAccessor.invoke(java.base@20-ea/DirectMethodHandleAccessor.java:104)
at java.lang.reflect.Method.invoke(java.base@20-ea/Method.java:578)
at com.sun.javatest.regtest.agent.MainWrapper$MainThread.run(MainWrapper.java:125)
at java.lang.Thread.runWith(java.base@20-ea/Thread.java:1636)
at java.lang.Thread.run(java.base@20-ea/Thread.java:1623)