Also:   hudson.remoting.Channel$CallSiteStackTrace: Remote call to JNLP4-connect connection from XX.YY.ZZ.WW/XX.YY.ZZ.WW:47130
		at hudson.remoting.Channel.attachCallSiteStackTrace(Channel.java:1741)
		at hudson.remoting.UserResponse.retrieve(UserRequest.java:389)
		at hudson.remoting.Channel.call(Channel.java:955)
		at hudson.Launcher$RemoteLauncher.launch(Launcher.java:1059)
		at hudson.Launcher$ProcStarter.start(Launcher.java:455)
		at org.jenkinsci.plugins.xvfb.Xvfb.launchXvfb(Xvfb.java:587)
		at org.jenkinsci.plugins.xvfb.Xvfb.setUp(Xvfb.java:697)
		at org.jenkinsci.plugins.workflow.steps.CoreWrapperStep$Execution.start(CoreWrapperStep.java:80)
		at org.jenkinsci.plugins.workflow.cps.DSL.invokeStep(DSL.java:270)
		at org.jenkinsci.plugins.workflow.cps.DSL.invokeMethod(DSL.java:178)
		at org.jenkinsci.plugins.workflow.cps.CpsScript.invokeMethod(CpsScript.java:122)
		at sun.reflect.GeneratedMethodAccessor694.invoke(Unknown Source)
		at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
		at java.lang.reflect.Method.invoke(Method.java:498)
		at org.codehaus.groovy.reflection.CachedMethod.invoke(CachedMethod.java:93)
		at groovy.lang.MetaMethod.doMethodInvoke(MetaMethod.java:325)
		at groovy.lang.MetaClassImpl.invokeMethod(MetaClassImpl.java:1213)
		at groovy.lang.MetaClassImpl.invokeMethod(MetaClassImpl.java:1022)
		at org.codehaus.groovy.runtime.callsite.PogoMetaClassSite.call(PogoMetaClassSite.java:42)
		at org.codehaus.groovy.runtime.callsite.CallSiteArray.defaultCall(CallSiteArray.java:48)
		at org.codehaus.groovy.runtime.callsite.AbstractCallSite.call(AbstractCallSite.java:113)
		at org.kohsuke.groovy.sandbox.impl.Checker$1.call(Checker.java:157)
		at org.kohsuke.groovy.sandbox.GroovyInterceptor.onMethodCall(GroovyInterceptor.java:23)
		at org.jenkinsci.plugins.scriptsecurity.sandbox.groovy.SandboxInterceptor.onMethodCall(SandboxInterceptor.java:155)
		at org.kohsuke.groovy.sandbox.impl.Checker$1.call(Checker.java:155)
		at org.kohsuke.groovy.sandbox.impl.Checker.checkedCall(Checker.java:159)
		at org.kohsuke.groovy.sandbox.impl.Checker.checkedCall(Checker.java:129)
		at org.kohsuke.groovy.sandbox.impl.Checker.checkedCall(Checker.java:129)
		at com.cloudbees.groovy.cps.sandbox.SandboxInvoker.methodCall(SandboxInvoker.java:17)
		at com.cloudbees.groovy.cps.impl.ContinuationGroup.methodCall(ContinuationGroup.java:57)
		at com.cloudbees.groovy.cps.impl.FunctionCallBlock$ContinuationImpl.dispatchOrArg(FunctionCallBlock.java:109)
		at com.cloudbees.groovy.cps.impl.FunctionCallBlock$ContinuationImpl.fixArg(FunctionCallBlock.java:82)
		at sun.reflect.GeneratedMethodAccessor317.invoke(Unknown Source)
		at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
		at java.lang.reflect.Method.invoke(Method.java:498)
		at com.cloudbees.groovy.cps.impl.ContinuationPtr$ContinuationImpl.receive(ContinuationPtr.java:72)
		at com.cloudbees.groovy.cps.impl.ClosureBlock.eval(ClosureBlock.java:46)
		at com.cloudbees.groovy.cps.Next.step(Next.java:83)
		at com.cloudbees.groovy.cps.Continuable$1.call(Continuable.java:174)
		at com.cloudbees.groovy.cps.Continuable$1.call(Continuable.java:163)
		at org.codehaus.groovy.runtime.GroovyCategorySupport$ThreadCategoryInfo.use(GroovyCategorySupport.java:129)
		at org.codehaus.groovy.runtime.GroovyCategorySupport.use(GroovyCategorySupport.java:268)
		at com.cloudbees.groovy.cps.Continuable.run0(Continuable.java:163)
		at org.jenkinsci.plugins.workflow.cps.SandboxContinuable.access$101(SandboxContinuable.java:34)
		at org.jenkinsci.plugins.workflow.cps.SandboxContinuable.lambda$run0$0(SandboxContinuable.java:59)
		at org.jenkinsci.plugins.scriptsecurity.sandbox.groovy.GroovySandbox.runInSandbox(GroovySandbox.java:108)
		at org.jenkinsci.plugins.workflow.cps.SandboxContinuable.run0(SandboxContinuable.java:58)
		at org.jenkinsci.plugins.workflow.cps.CpsThread.runNextChunk(CpsThread.java:182)
		at org.jenkinsci.plugins.workflow.cps.CpsThreadGroup.run(CpsThreadGroup.java:332)
		at org.jenkinsci.plugins.workflow.cps.CpsThreadGroup.access$200(CpsThreadGroup.java:83)
		at org.jenkinsci.plugins.workflow.cps.CpsThreadGroup$2.call(CpsThreadGroup.java:244)
		at org.jenkinsci.plugins.workflow.cps.CpsThreadGroup$2.call(CpsThreadGroup.java:232)
		at org.jenkinsci.plugins.workflow.cps.CpsVmExecutorService$2.call(CpsVmExecutorService.java:64)
		at java.util.concurrent.FutureTask.run(FutureTask.java:266)
		at hudson.remoting.SingleLaneExecutorService$1.run(SingleLaneExecutorService.java:131)
		at jenkins.util.ContextResettingExecutorService$1.run(ContextResettingExecutorService.java:28)
		at jenkins.security.ImpersonatingExecutorService$1.run(ImpersonatingExecutorService.java:59)
		at java.util.concurrent.Executors$RunnableAdapter.call(Executors.java:511)
		at java.util.concurrent.FutureTask.run(FutureTask.java:266)
		at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1149)
		at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:624)
java.lang.IllegalAccessError: tried to access field hudson.remoting.Channel.executor from class org.jenkinsci.remoting.util.AnonymousClassWarnings
	at org.jenkinsci.remoting.util.AnonymousClassWarnings.check(AnonymousClassWarnings.java:65)
	at org.jenkinsci.remoting.util.AnonymousClassWarnings$1.annotateClass(AnonymousClassWarnings.java:121)
	at java.io.ObjectOutputStream.writeNonProxyDesc(ObjectOutputStream.java:1290)
	at java.io.ObjectOutputStream.writeClassDesc(ObjectOutputStream.java:1231)
	at java.io.ObjectOutputStream.writeOrdinaryObject(ObjectOutputStream.java:1427)
	at java.io.ObjectOutputStream.writeObject0(ObjectOutputStream.java:1178)
	at java.io.ObjectOutputStream.writeObject(ObjectOutputStream.java:348)
	at hudson.console.ConsoleNote.encodeToBytes(ConsoleNote.java:185)
	at hudson.console.ConsoleNote.encode(ConsoleNote.java:211)
	at hudson.plugins.timestamper.TimestampNotesOutputStream.eol(TimestampNotesOutputStream.java:70)
	at hudson.console.LineTransformationOutputStream.eol(LineTransformationOutputStream.java:60)
	at hudson.console.LineTransformationOutputStream.write(LineTransformationOutputStream.java:56)
	at hudson.console.LineTransformationOutputStream.write(LineTransformationOutputStream.java:74)
	at java.io.PrintStream.write(PrintStream.java:480)
	at sun.nio.cs.StreamEncoder.writeBytes(StreamEncoder.java:221)
	at sun.nio.cs.StreamEncoder.implFlushBuffer(StreamEncoder.java:291)
	at sun.nio.cs.StreamEncoder.flushBuffer(StreamEncoder.java:104)
	at java.io.OutputStreamWriter.flushBuffer(OutputStreamWriter.java:185)
	at java.io.PrintStream.newLine(PrintStream.java:546)
	at java.io.PrintStream.println(PrintStream.java:807)
	at hudson.Launcher.printCommandLine(Launcher.java:763)
	at hudson.Launcher.maskedPrintCommandLine(Launcher.java:790)
	at hudson.Launcher$LocalLauncher.launch(Launcher.java:922)
	at hudson.Launcher$ProcStarter.start(Launcher.java:455)
	at hudson.Launcher$RemoteLaunchCallable.call(Launcher.java:1313)
	at hudson.Launcher$RemoteLaunchCallable.call(Launcher.java:1266)
	at hudson.remoting.UserRequest.perform(UserRequest.java:210)
	at hudson.remoting.UserRequest.perform(UserRequest.java:53)
	at hudson.remoting.Request$2.run(Request.java:358)
	at hudson.remoting.InterceptingExecutorService$1.call(InterceptingExecutorService.java:72)
	at java.util.concurrent.FutureTask.run(FutureTask.java:266)
	at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1149)
	at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:624)
	at hudson.remoting.Engine$1$1.run(Engine.java:94)
Caused: java.io.IOException: Remote call on JNLP4-connect connection from XX.YY.ZZ.WW/XX.YY.ZZ.WW:47130 failed
	at hudson.remoting.Channel.call(Channel.java:961)
	at hudson.Launcher$RemoteLauncher.launch(Launcher.java:1059)
	at hudson.Launcher$ProcStarter.start(Launcher.java:455)
	at org.jenkinsci.plugins.xvfb.Xvfb.launchXvfb(Xvfb.java:587)
	at org.jenkinsci.plugins.xvfb.Xvfb.setUp(Xvfb.java:697)
	at org.jenkinsci.plugins.workflow.steps.CoreWrapperStep$Execution.start(CoreWrapperStep.java:80)
	at org.jenkinsci.plugins.workflow.cps.DSL.invokeStep(DSL.java:270)
	at org.jenkinsci.plugins.workflow.cps.DSL.invokeMethod(DSL.java:178)
	at org.jenkinsci.plugins.workflow.cps.CpsScript.invokeMethod(CpsScript.java:122)
	at sun.reflect.GeneratedMethodAccessor694.invoke(Unknown Source)
	at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
	at java.lang.reflect.Method.invoke(Method.java:498)
	at org.codehaus.groovy.reflection.CachedMethod.invoke(CachedMethod.java:93)
	at groovy.lang.MetaMethod.doMethodInvoke(MetaMethod.java:325)
	at groovy.lang.MetaClassImpl.invokeMethod(MetaClassImpl.java:1213)
	at groovy.lang.MetaClassImpl.invokeMethod(MetaClassImpl.java:1022)
	at org.codehaus.groovy.runtime.callsite.PogoMetaClassSite.call(PogoMetaClassSite.java:42)
	at org.codehaus.groovy.runtime.callsite.CallSiteArray.defaultCall(CallSiteArray.java:48)
	at org.codehaus.groovy.runtime.callsite.AbstractCallSite.call(AbstractCallSite.java:113)
	at org.kohsuke.groovy.sandbox.impl.Checker$1.call(Checker.java:157)
	at org.kohsuke.groovy.sandbox.GroovyInterceptor.onMethodCall(GroovyInterceptor.java:23)
	at org.jenkinsci.plugins.scriptsecurity.sandbox.groovy.SandboxInterceptor.onMethodCall(SandboxInterceptor.java:155)
	at org.kohsuke.groovy.sandbox.impl.Checker$1.call(Checker.java:155)
	at org.kohsuke.groovy.sandbox.impl.Checker.checkedCall(Checker.java:159)
	at org.kohsuke.groovy.sandbox.impl.Checker.checkedCall(Checker.java:129)
	at org.kohsuke.groovy.sandbox.impl.Checker.checkedCall(Checker.java:129)
	at com.cloudbees.groovy.cps.sandbox.SandboxInvoker.methodCall(SandboxInvoker.java:17)
	at WorkflowScript.run(WorkflowScript:9)
	at ___cps.transform___(Native Method)
	at com.cloudbees.groovy.cps.impl.ContinuationGroup.methodCall(ContinuationGroup.java:57)
	at com.cloudbees.groovy.cps.impl.FunctionCallBlock$ContinuationImpl.dispatchOrArg(FunctionCallBlock.java:109)
	at com.cloudbees.groovy.cps.impl.FunctionCallBlock$ContinuationImpl.fixArg(FunctionCallBlock.java:82)
	at sun.reflect.GeneratedMethodAccessor317.invoke(Unknown Source)
	at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
	at java.lang.reflect.Method.invoke(Method.java:498)
	at com.cloudbees.groovy.cps.impl.ContinuationPtr$ContinuationImpl.receive(ContinuationPtr.java:72)
	at com.cloudbees.groovy.cps.impl.ClosureBlock.eval(ClosureBlock.java:46)
	at com.cloudbees.groovy.cps.Next.step(Next.java:83)
	at com.cloudbees.groovy.cps.Continuable$1.call(Continuable.java:174)
	at com.cloudbees.groovy.cps.Continuable$1.call(Continuable.java:163)
	at org.codehaus.groovy.runtime.GroovyCategorySupport$ThreadCategoryInfo.use(GroovyCategorySupport.java:129)
	at org.codehaus.groovy.runtime.GroovyCategorySupport.use(GroovyCategorySupport.java:268)
	at com.cloudbees.groovy.cps.Continuable.run0(Continuable.java:163)
	at org.jenkinsci.plugins.workflow.cps.SandboxContinuable.access$101(SandboxContinuable.java:34)
	at org.jenkinsci.plugins.workflow.cps.SandboxContinuable.lambda$run0$0(SandboxContinuable.java:59)
	at org.jenkinsci.plugins.scriptsecurity.sandbox.groovy.GroovySandbox.runInSandbox(GroovySandbox.java:108)
	at org.jenkinsci.plugins.workflow.cps.SandboxContinuable.run0(SandboxContinuable.java:58)
	at org.jenkinsci.plugins.workflow.cps.CpsThread.runNextChunk(CpsThread.java:182)
	at org.jenkinsci.plugins.workflow.cps.CpsThreadGroup.run(CpsThreadGroup.java:332)
	at org.jenkinsci.plugins.workflow.cps.CpsThreadGroup.access$200(CpsThreadGroup.java:83)
	at org.jenkinsci.plugins.workflow.cps.CpsThreadGroup$2.call(CpsThreadGroup.java:244)
	at org.jenkinsci.plugins.workflow.cps.CpsThreadGroup$2.call(CpsThreadGroup.java:232)
	at org.jenkinsci.plugins.workflow.cps.CpsVmExecutorService$2.call(CpsVmExecutorService.java:64)
	at java.util.concurrent.FutureTask.run(FutureTask.java:266)
	at hudson.remoting.SingleLaneExecutorService$1.run(SingleLaneExecutorService.java:131)
	at jenkins.util.ContextResettingExecutorService$1.run(ContextResettingExecutorService.java:28)
	at jenkins.security.ImpersonatingExecutorService$1.run(ImpersonatingExecutorService.java:59)
	at java.util.concurrent.Executors$RunnableAdapter.call(Executors.java:511)
	at java.util.concurrent.FutureTask.run(FutureTask.java:266)
	at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1149)
	at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:624)
	at java.lang.Thread.run(Thread.java:748)
Finished: FAILURE