It looks to me like the ServerSocket got closed for some reason.

The problem is in the Executor trying to connect to the test VM.

This is part of the test framework. It didn't get to run the actual test.

Exception in thread "main" java.lang.Error: TESTBUG: unexpected lines list
    at compiler.compilercontrol.share.actions.BaseAction.decodeMap(BaseAction.java:111)
    at compiler.compilercontrol.share.actions.BaseAction.communicate(BaseAction.java:100)
    at compiler.compilercontrol.share.actions.BaseAction.main(BaseAction.java:59)
]
 exitValue = 1

java.lang.RuntimeException: Expected to get exit value of [0]

    at jdk.test.lib.OutputAnalyzer.shouldHaveExitValue(OutputAnalyzer.java:366)
    at compiler.compilercontrol.share.scenario.Scenario.execute(Scenario.java:115)
    at compiler.compilercontrol.share.SingleCommand.test(SingleCommand.java:55)
    at compiler.compilercontrol.commandfile.PrintTest.main(PrintTest.java:44)
    at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
    at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:62)
    at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
    at java.lang.reflect.Method.invoke(Method.java:520)
    at com.sun.javatest.regtest.agent.MainWrapper$MainThread.run(MainWrapper.java:92)
    at java.lang.Thread.run(Thread.java:747)
java.lang.Error: Failed to write data: Socket closed
    at compiler.compilercontrol.share.scenario.Executor.connectTestVM(Executor.java:147)
    at compiler.compilercontrol.share.scenario.Executor.lambda$execute$0(Executor.java:98)
    at java.lang.Thread.run(Thread.java:747)
Caused by: java.net.SocketException: Socket closed
    at java.net.PlainSocketImpl.socketAccept(Native Method)
    at java.net.AbstractPlainSocketImpl.accept(AbstractPlainSocketImpl.java:409)
    at java.net.ServerSocket.implAccept(ServerSocket.java:546)
    at java.net.ServerSocket.accept(ServerSocket.java:514)
    at compiler.compilercontrol.share.scenario.Executor.connectTestVM(Executor.java:126)