All failures look with similar symptom. A couple other tests also fail. All are listed below in comment.

This is a sample for jdk/jshell/ClassesTest.java

The root cause may be "
Caused by: com.sun.jdi.connect.VMStartException: VM initialization failed for: D:\\jenkins\\workspace\\9-dev-tier1-windows-i586\\build\\jdk\\bin\\java -classpath D:\\jenkins\\workspace\\9-dev-tier1-windows-i586\\JTwork\\langtools_test\\classes\\11\\jdk\\jshell;D:\\jenkins\\workspace\\9-dev-tier1-windows-i586\\langtools\\test\\jdk\\jshell;D:\\jenkins\\workspace\\9-dev-tier1-windows-i586\\mach5\\jdkbuildwrapper\\.data\\unpacked\\jpg\\infra\\builddeps\\jtreg-4.1\\1.3\\jtreg\\lib\\javatest.jar;D:\\jenkins\\workspace\\9-dev-tier1-windows-i586\\mach5\\jdkbuildwrapper\\.data\\unpacked\\jpg\\infra\\builddeps\\jtreg-4.1\\1.3\\jtreg\\lib\\jtreg.jar;D:\\jenkins\\workspace\\9-dev-tier1-windows-i586\\mach5\\jdkbuildwrapper\\.data\\unpacked\\jpg\\infra\\builddeps\\jtreg-4.1\\1.3\\jtreg\\lib\\testng.jar -Xbootclasspath:D:\\jenkins\\workspace\\9-dev-tier1-windows-i586\\build\\jdk\\lib\\modules\\bootmodules.jimage -Xdebug -Xrunjdwp:transport=dt_shmem,address=javadebug50200,suspend=y jdk.internal.jshell.remote.RemoteAgent 24503
at com.sun.tools.jdi.AbstractLauncher$Helper.launchAndAccept(AbstractLauncher.java:193)
at com.sun.tools.jdi.AbstractLauncher.launch(AbstractLauncher.java:132)
at com.sun.tools.jdi.SunCommandLineLauncher.launch(SunCommandLineLauncher.java:223)
at jdk.jshell.JDIConnection.launchTarget(JDIConnection.java:303)"


All system err:

----------System.err:(52/6474)*----------
org.testng.TestNGException:
An error occurred while instantiating class ClassesTest: Failed remote launch: com.sun.jdi.CommandLineLaunch (defaults: home=D:\\jenkins\\workspace\\9-dev-tier1-windows-i586\\build\\jdk, options=, main=, suspend=true, quote=", vmexec=java) -- {home=home=D:\\jenkins\\workspace\\9-dev-tier1-windows-i586\\build\\jdk, options=options=-classpath "D:\\jenkins\\workspace\\9-dev-tier1-windows-i586\\JTwork\\langtools_test\\classes\\11\\jdk\\jshell;D:\\jenkins\\workspace\\9-dev-tier1-windows-i586\\langtools\\test\\jdk\\jshell;D:\\jenkins\\workspace\\9-dev-tier1-windows-i586\\mach5\\jdkbuildwrapper\\.data\\unpacked\\jpg\\infra\\builddeps\\jtreg-4.1\\1.3\\jtreg\\lib\\javatest.jar;D:\\jenkins\\workspace\\9-dev-tier1-windows-i586\\mach5\\jdkbuildwrapper\\.data\\unpacked\\jpg\\infra\\builddeps\\jtreg-4.1\\1.3\\jtreg\\lib\\jtreg.jar;D:\\jenkins\\workspace\\9-dev-tier1-windows-i586\\mach5\\jdkbuildwrapper\\.data\\unpacked\\jpg\\infra\\builddeps\\jtreg-4.1\\1.3\\jtreg\\lib\\testng.jar" -Xbootclasspath:"D:\\jenkins\\workspace\\9-dev-tier1-windows-i586\\build\\jdk\\lib\\modules\\bootmodules.jimage", main=main=jdk.internal.jshell.remote.RemoteAgent 24503, suspend=suspend=true, quote=quote=", vmexec=vmexec=java}
at org.testng.internal.ClassHelper.createInstance1(ClassHelper.java:398)
at org.testng.internal.ClassHelper.createInstance(ClassHelper.java:299)
at org.testng.internal.ClassImpl.getDefaultInstance(ClassImpl.java:110)
at org.testng.internal.ClassImpl.getInstances(ClassImpl.java:186)
at org.testng.internal.TestNGClassFinder.<init>(TestNGClassFinder.java:120)
at org.testng.TestRunner.initMethods(TestRunner.java:409)
at org.testng.TestRunner.init(TestRunner.java:235)
at org.testng.TestRunner.init(TestRunner.java:205)
at org.testng.TestRunner.<init>(TestRunner.java:153)
at org.testng.SuiteRunner$DefaultTestRunnerFactory.newTestRunner(SuiteRunner.java:522)
at org.testng.SuiteRunner.init(SuiteRunner.java:157)
at org.testng.SuiteRunner.<init>(SuiteRunner.java:111)
at org.testng.TestNG.createSuiteRunner(TestNG.java:1299)
at org.testng.TestNG.createSuiteRunners(TestNG.java:1286)
at org.testng.TestNG.runSuitesLocally(TestNG.java:1140)
at org.testng.TestNG.run(TestNG.java:1057)
at com.sun.javatest.regtest.TestNGAction$TestNGRunner.main(TestNGAction.java:163)
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.MainActionHelper$SameVMRunnable.run(MainActionHelper.java:218)
at java.lang.Thread.run(Thread.java:804)
Caused by: java.lang.InternalError: Failed remote launch: com.sun.jdi.CommandLineLaunch (defaults: home=D:\\jenkins\\workspace\\9-dev-tier1-windows-i586\\build\\jdk, options=, main=, suspend=true, quote=", vmexec=java) -- {home=home=D:\\jenkins\\workspace\\9-dev-tier1-windows-i586\\build\\jdk, options=options=-classpath "D:\\jenkins\\workspace\\9-dev-tier1-windows-i586\\JTwork\\langtools_test\\classes\\11\\jdk\\jshell;D:\\jenkins\\workspace\\9-dev-tier1-windows-i586\\langtools\\test\\jdk\\jshell;D:\\jenkins\\workspace\\9-dev-tier1-windows-i586\\mach5\\jdkbuildwrapper\\.data\\unpacked\\jpg\\infra\\builddeps\\jtreg-4.1\\1.3\\jtreg\\lib\\javatest.jar;D:\\jenkins\\workspace\\9-dev-tier1-windows-i586\\mach5\\jdkbuildwrapper\\.data\\unpacked\\jpg\\infra\\builddeps\\jtreg-4.1\\1.3\\jtreg\\lib\\jtreg.jar;D:\\jenkins\\workspace\\9-dev-tier1-windows-i586\\mach5\\jdkbuildwrapper\\.data\\unpacked\\jpg\\infra\\builddeps\\jtreg-4.1\\1.3\\jtreg\\lib\\testng.jar" -Xbootclasspath:"D:\\jenkins\\workspace\\9-dev-tier1-windows-i586\\build\\jdk\\lib\\modules\\bootmodules.jimage", main=main=jdk.internal.jshell.remote.RemoteAgent 24503, suspend=suspend=true, quote=quote=", vmexec=vmexec=java}
at jdk.jshell.JDIConnection.reportLaunchFail(JDIConnection.java:344)
at jdk.jshell.JDIConnection.launchTarget(JDIConnection.java:310)
at jdk.jshell.JDIConnection.open(JDIConnection.java:121)
at jdk.jshell.JDIEnv.init(JDIEnv.java:49)
at jdk.jshell.ExecutionControl.jdiGo(ExecutionControl.java:269)
at jdk.jshell.ExecutionControl.launch(ExecutionControl.java:71)
at jdk.jshell.JShell.executionControl(JShell.java:613)
at jdk.jshell.JShell.close(JShell.java:412)
at KullaTesting.<clinit>(KullaTesting.java:93)
at sun.reflect.NativeConstructorAccessorImpl.newInstance0(Native Method)
at sun.reflect.NativeConstructorAccessorImpl.newInstance(NativeConstructorAccessorImpl.java:62)
at sun.reflect.DelegatingConstructorAccessorImpl.newInstance(DelegatingConstructorAccessorImpl.java:45)
at java.lang.reflect.Constructor.newInstance(Constructor.java:426)
at org.testng.internal.ObjectFactoryImpl.newInstance(ObjectFactoryImpl.java:29)
at org.testng.internal.ClassHelper.createInstance1(ClassHelper.java:387)
... 22 more
Caused by: com.sun.jdi.connect.VMStartException: VM initialization failed for: D:\\jenkins\\workspace\\9-dev-tier1-windows-i586\\build\\jdk\\bin\\java -classpath D:\\jenkins\\workspace\\9-dev-tier1-windows-i586\\JTwork\\langtools_test\\classes\\11\\jdk\\jshell;D:\\jenkins\\workspace\\9-dev-tier1-windows-i586\\langtools\\test\\jdk\\jshell;D:\\jenkins\\workspace\\9-dev-tier1-windows-i586\\mach5\\jdkbuildwrapper\\.data\\unpacked\\jpg\\infra\\builddeps\\jtreg-4.1\\1.3\\jtreg\\lib\\javatest.jar;D:\\jenkins\\workspace\\9-dev-tier1-windows-i586\\mach5\\jdkbuildwrapper\\.data\\unpacked\\jpg\\infra\\builddeps\\jtreg-4.1\\1.3\\jtreg\\lib\\jtreg.jar;D:\\jenkins\\workspace\\9-dev-tier1-windows-i586\\mach5\\jdkbuildwrapper\\.data\\unpacked\\jpg\\infra\\builddeps\\jtreg-4.1\\1.3\\jtreg\\lib\\testng.jar -Xbootclasspath:D:\\jenkins\\workspace\\9-dev-tier1-windows-i586\\build\\jdk\\lib\\modules\\bootmodules.jimage -Xdebug -Xrunjdwp:transport=dt_shmem,address=javadebug50200,suspend=y jdk.internal.jshell.remote.RemoteAgent 24503
at com.sun.tools.jdi.AbstractLauncher$Helper.launchAndAccept(AbstractLauncher.java:193)
at com.sun.tools.jdi.AbstractLauncher.launch(AbstractLauncher.java:132)
at com.sun.tools.jdi.SunCommandLineLauncher.launch(SunCommandLineLauncher.java:223)
at jdk.jshell.JDIConnection.launchTarget(JDIConnection.java:303)
... 35 more

JavaTest Message: Test threw exception: org.testng.TestNGException
JavaTest Message: shutting down test


Listed all failed tests below:
    jdk/jshell/AnalysisTest.java.AnalysisTest
    jdk/jshell/ClassMembersTest.java.ClassMembersTest
    jdk/jshell/ClassPathTest.java.ClassPathTest
    jdk/jshell/ClassesTest.java.ClassesTest
    jdk/jshell/CommandCompletionTest.java.CommandCompletionTest
    jdk/jshell/CompletenessTest.java.CompletenessTest
    jdk/jshell/CompletionSuggestionTest.java.CompletionSuggestionTest
    jdk/jshell/DropTest.java.DropTest
    jdk/jshell/EmptyTest.java.EmptyTest
    jdk/jshell/ErrorTranslationTest.java.ErrorTranslationTest
    jdk/jshell/ExceptionsTest.java.ExceptionsTest
    jdk/jshell/IOTest.java.IOTest
    jdk/jshell/IdGeneratorTest.java.IdGeneratorTest
    jdk/jshell/IgnoreTest.java.IgnoreTest
    jdk/jshell/IllegalArgumentExceptionTest.java.IllegalArgumentExceptionTest
    jdk/jshell/ImportTest.java.ImportTest
    jdk/jshell/JShellStateClosedTest.java.JShellStateClosedTest
    jdk/jshell/KullaCompletenessStressTest.java.KullaCompletenessStressTest
    jdk/jshell/MethodsTest.java.MethodsTest
    jdk/jshell/ModifiersTest.java.ModifiersTest
    jdk/jshell/NullTest.java.NullTest
    jdk/jshell/RejectedFailedTest.java.RejectedFailedTest
    jdk/jshell/ReplaceTest.java.ReplaceTest
    jdk/jshell/ShutdownTest.java.ShutdownTest
    jdk/jshell/SimpleRegressionTest.java.SimpleRegressionTest
    jdk/jshell/SnippetStatusListenerTest.java.SnippetStatusListenerTest
    jdk/jshell/SnippetTest.java.SnippetTest
    jdk/jshell/StopExecutionTest.java.StopExecutionTest
    jdk/jshell/T8146368/JShellTest8146368.java.JShellTest8146368
    jdk/jshell/T8146368/JShellToolTest8146368.java.JShellToolTest8146368
    jdk/jshell/TypeNameTest.java.TypeNameTest
    jdk/jshell/VariablesTest.java.VariablesTest