jdk/jshell/ToolTabSnippetTest.java timed out waiting for output

The following test failed in the JDK14 CI:

jdk/jshell/ToolTabSnippetTest.java

Here are snippets from the two failing test cases:

 \u0005new JShellTest
 \u0005new JShellTest
\u001b[?2004l\u001b[?2004h \u0005
\u001b[?2004l\u001b[?2004h \u0005/exit
\u001b[?2004ltest ToolTabSnippetTest.testExpression(): failure
java.lang.IllegalStateException: Timeout waiting for: \\u001B\\[1mjshelltest.JShellTest\\u001B\\[0m\\u000D*\\u000AJShellTest 0\\u000D*\\u000A\\u000D? \\u0005new JShellTest, actual output so far: \\u000D \\u0005new JShellTest
at UITesting.waitOutput(UITesting.java:172)
at UITesting.waitOutput(UITesting.java:141)
at ToolTabSnippetTest.lambda$testExpression$0(ToolTabSnippetTest.java:90)
at UITesting.doRunTest(UITesting.java:112)
at ToolTabSnippetTest.testExpression(ToolTabSnippetTest.java:62)
at java.base/jdk.internal.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
at java.base/jdk.internal.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:62)
at java.base/jdk.internal.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
at java.base/java.lang.reflect.Method.invoke(Method.java:564)
at org.testng.internal.MethodInvocationHelper.invokeMethod(MethodInvocationHelper.java:85)
at org.testng.internal.Invoker.invokeMethod(Invoker.java:639)
at org.testng.internal.Invoker.invokeTestMethod(Invoker.java:821)
at org.testng.internal.Invoker.invokeTestMethods(Invoker.java:1131)
at org.testng.internal.TestMethodWorker.invokeTestMethods(TestMethodWorker.java:124)
at org.testng.internal.TestMethodWorker.run(TestMethodWorker.java:108)
at org.testng.TestRunner.privateRun(TestRunner.java:773)
at org.testng.TestRunner.run(TestRunner.java:623)
at org.testng.SuiteRunner.runTest(SuiteRunner.java:357)
at org.testng.SuiteRunner.runSequentially(SuiteRunner.java:352)
at org.testng.SuiteRunner.privateRun(SuiteRunner.java:310)
at org.testng.SuiteRunner.run(SuiteRunner.java:259)
at org.testng.SuiteRunnerWorker.runSuite(SuiteRunnerWorker.java:52)
at org.testng.SuiteRunnerWorker.run(SuiteRunnerWorker.java:86)
at org.testng.TestNG.runSuitesSequentially(TestNG.java:1185)
at org.testng.TestNG.runSuitesLocally(TestNG.java:1110)
at org.testng.TestNG.run(TestNG.java:1018)
at com.sun.javatest.regtest.agent.TestNGRunner.main(TestNGRunner.java:94)
at java.base/jdk.internal.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
at java.base/jdk.internal.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:62)
at java.base/jdk.internal.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
at java.base/java.lang.reflect.Method.invoke(Method.java:564)
at com.sun.javatest.regtest.agent.MainActionHelper$AgentVMRunnable.run(MainActionHelper.java:298)
at java.base/java.lang.Thread.run(Thread.java:832)

and the second failure:

| Welcome to JShell -- Version 14-ea
| For an introduction type: /help intro
\u001b[?2004h \u0005String xyzAA;
\u001b[?2004ltest ToolTabSnippetTest.testNoRepeat(): failure
java.lang.IllegalStateException: Timeout waiting for: \\u0005, actual output so far: String xyzAA;\\u000D\\u000A\\u001B[?2004l
at UITesting.waitOutput(UITesting.java:172)
at UITesting.waitOutput(UITesting.java:141)
at ToolTabSnippetTest.lambda$testNoRepeat$2(ToolTabSnippetTest.java:247)
at UITesting.doRunTest(UITesting.java:112)
at ToolTabSnippetTest.testNoRepeat(ToolTabSnippetTest.java:245)
at java.base/jdk.internal.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
at java.base/jdk.internal.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:62)
at java.base/jdk.internal.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
at java.base/java.lang.reflect.Method.invoke(Method.java:564)
at org.testng.internal.MethodInvocationHelper.invokeMethod(MethodInvocationHelper.java:85)
at org.testng.internal.Invoker.invokeMethod(Invoker.java:639)
at org.testng.internal.Invoker.invokeTestMethod(Invoker.java:821)
at org.testng.internal.Invoker.invokeTestMethods(Invoker.java:1131)
at org.testng.internal.TestMethodWorker.invokeTestMethods(TestMethodWorker.java:124)
at org.testng.internal.TestMethodWorker.run(TestMethodWorker.java:108)
at org.testng.TestRunner.privateRun(TestRunner.java:773)
at org.testng.TestRunner.run(TestRunner.java:623)
at org.testng.SuiteRunner.runTest(SuiteRunner.java:357)
at org.testng.SuiteRunner.runSequentially(SuiteRunner.java:352)
at org.testng.SuiteRunner.privateRun(SuiteRunner.java:310)
at org.testng.SuiteRunner.run(SuiteRunner.java:259)
at org.testng.SuiteRunnerWorker.runSuite(SuiteRunnerWorker.java:52)
at org.testng.SuiteRunnerWorker.run(SuiteRunnerWorker.java:86)
at org.testng.TestNG.runSuitesSequentially(TestNG.java:1185)
at org.testng.TestNG.runSuitesLocally(TestNG.java:1110)
at org.testng.TestNG.run(TestNG.java:1018)
at com.sun.javatest.regtest.agent.TestNGRunner.main(TestNGRunner.java:94)
at java.base/jdk.internal.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
at java.base/jdk.internal.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:62)
at java.base/jdk.internal.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
at java.base/java.lang.reflect.Method.invoke(Method.java:564)
at com.sun.javatest.regtest.agent.MainActionHelper$AgentVMRunnable.run(MainActionHelper.java:298)
at java.base/java.lang.Thread.run(Thread.java:832)


There are also a couple of these on stderr:

java.lang.InterruptedException

And stderr ends with this:

JavaTest Message: Problem cleaning up the following threads:
AgentVMThread
  at java.base@14-ea/java.lang.Object.wait(Native Method)
  at UITesting.waitOutput(UITesting.java:175)
  at UITesting.waitOutput(UITesting.java:141)
  at ToolTabSnippetTest.lambda$testNoRepeat$2(ToolTabSnippetTest.java:247)
  at ToolTabSnippetTest$$Lambda$2056/0x00000007c0736840.test(Unknown Source)
  at UITesting.doRunTest(UITesting.java:112)
  at ToolTabSnippetTest.testNoRepeat(ToolTabSnippetTest.java:245)
  at java.base@14-ea/jdk.internal.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
  at java.base@14-ea/jdk.internal.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:62)
  at java.base@14-ea/jdk.internal.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
  at java.base@14-ea/java.lang.reflect.Method.invoke(Method.java:564)
  at app//org.testng.internal.MethodInvocationHelper.invokeMethod(MethodInvocationHelper.java:85)
  at app//org.testng.internal.Invoker.invokeMethod(Invoker.java:639)
  at app//org.testng.internal.Invoker.invokeTestMethod(Invoker.java:821)
  at app//org.testng.internal.Invoker.invokeTestMethods(Invoker.java:1131)
  at app//org.testng.internal.TestMethodWorker.invokeTestMethods(TestMethodWorker.java:124)
  at app//org.testng.internal.TestMethodWorker.run(TestMethodWorker.java:108)
  at app//org.testng.TestRunner.privateRun(TestRunner.java:773)
  at app//org.testng.TestRunner.run(TestRunner.java:623)
  at app//org.testng.SuiteRunner.runTest(SuiteRunner.java:357)
  at app//org.testng.SuiteRunner.runSequentially(SuiteRunner.java:352)
  ...

However, it appears that the last failure mode is a result
of the other failures.

Starting this bug as a P2 since this is a Tier1 test failure.