title: Jenkins slave failing to write to jarCache
body: <p>Background info: I have a Kubernetes Cluster with 3 linux nodes and 1 windows node. Everything from the jenkins master to agents is in a container or pod controlled by Kubernetes.</p>
  
  <p>I trying to connect a Windows agent(in a container) to a Linux master(also in a container), and I am running into problems when truing to connect the slave to the master using the hudson.remoting.jnlp.</p>
  
  <p>My "java -version" returns :
  java version "1.8.0_91"
  Java(TM) SE Runtime Environment (build 1.8.0_91-b15)
  Java HotSpot(TM) 64-Bit Server VM (build 25.91-b15, mixed mode)</p>
  
  <p>My Jenkins master version is 2.126 and its java version is:
  openjdk version "1.8.0_171"
  OpenJDK Runtime Environment (build 1.8.0_171-8u171-b11-1~deb9u1-b11)
  OpenJDK 64-Bit Server VM (build 25.171-b11, mixed mode)</p>
  
  <p>I'm using the remoting-3.15.jar with the command "java -cp C:\slave2.jar hudson.remoting.jnlp.Main -headless -tunnel :50000 -url http://:8080 -workDir C:\jenkins\agents  windows-jnlp-c3c71"</p>
  
  <p>here is the error from that command:</p>
  
  <pre><code>Aug 15, 2018 8:06:16 PM hudson.remoting.jnlp.Main createEngine
  INFO: Setting up slave: windows-jnlp-c3c71
  Aug 15, 2018 8:06:16 PM hudson.remoting.jnlp.Main$CuiListener &lt;init&gt;
  INFO: Jenkins agent is running in headless mode.
  Aug 15, 2018 8:06:16 PM org.jenkinsci.remoting.engine.WorkDirManager initializeWorkDir
  INFO: Using C:\jenkins\agents\remoting as a remoting work directory
  Both error and output logs will be printed to C:\jenkins\agents\remoting
  Aug 15, 2018 8:06:16 PM hudson.remoting.jnlp.Main$CuiListener status
  INFO: Locating server among [http://172.31.50.121:8080]
  Aug 15, 2018 8:06:16 PM org.jenkinsci.remoting.engine.JnlpAgentEndpointResolver resolve
  INFO: Remoting server accepts the following protocols: [JNLP4-connect, CLI2-connect, JNLP-connect, Ping, CLI-connect, JNLP2-connect]
  Aug 15, 2018 8:06:16 PM hudson.remoting.jnlp.Main$CuiListener status
  INFO: Agent discovery successful
    Agent address: 172.31.50.121
    Agent port:    50000
    Identity:      fc:9f:20:0d:43:fa:ba:57:31:b0:f8:d5:8c:b4:14:cb
  Aug 15, 2018 8:06:16 PM hudson.remoting.jnlp.Main$CuiListener status
  INFO: Handshaking
  Aug 15, 2018 8:06:16 PM hudson.remoting.jnlp.Main$CuiListener status
  INFO: Connecting to 172.31.50.121:50000
  Aug 15, 2018 8:06:16 PM hudson.remoting.jnlp.Main$CuiListener status
  INFO: Trying protocol: JNLP4-connect
  Aug 15, 2018 8:06:18 PM hudson.remoting.jnlp.Main$CuiListener status
  INFO: Remote identity confirmed: fc:9f:20:0d:43:fa:ba:57:31:b0:f8:d5:8c:b4:14:cb
  Aug 15, 2018 8:06:18 PM hudson.remoting.jnlp.Main$CuiListener status
  INFO: Connected
  Aug 15, 2018 8:06:20 PM hudson.remoting.jnlp.Main$CuiListener status
  INFO: Terminated
  Aug 15, 2018 8:06:20 PM hudson.remoting.JarCacheSupport$1 run
  WARNING: Failed to resolve a jar a8eac714f1e2fe381c068493abefe27b
  java.io.IOException: Failed to write to C:\jenkins\agents\remoting\jarCache\A8\EAC714F1E2FE381C068493ABEFE27B.jar
          at hudson.remoting.FileSystemJarCache.retrieve(FileSystemJarCache.java:142)
          at hudson.remoting.JarCacheSupport$1.run(JarCacheSupport.java:64)
          at java.util.concurrent.Executors$RunnableAdapter.call(Unknown Source)
          at java.util.concurrent.FutureTask.run(Unknown Source)
          at hudson.remoting.AtmostOneThreadExecutor$Worker.run(AtmostOneThreadExecutor.java:110)
          at java.lang.Thread.run(Unknown Source)
  Caused by: java.io.IOException: Backing channel 'JNLP4-connect connection to 172.31.50.121/172.31.50.121:50000' is disconnected.
          at hudson.remoting.RemoteInvocationHandler.channelOrFail(RemoteInvocationHandler.java:192)
          at hudson.remoting.RemoteInvocationHandler.invoke(RemoteInvocationHandler.java:257)
          at com.sun.proxy.$Proxy3.writeJarTo(Unknown Source)
          at hudson.remoting.FileSystemJarCache.retrieve(FileSystemJarCache.java:107)
          ... 5 more
  Caused by: hudson.remoting.Channel$OrderlyShutdown
          at hudson.remoting.Channel$CloseCommand.execute(Channel.java:1129)
          at hudson.remoting.Channel$1.handle(Channel.java:527)
          at hudson.remoting.AbstractByteBufferCommandTransport.processCommand(AbstractByteBufferCommandTransport.java:202)
          at hudson.remoting.AbstractByteBufferCommandTransport.receive(AbstractByteBufferCommandTransport.java:188)
          at org.jenkinsci.remoting.protocol.impl.ChannelApplicationLayer.onRead(ChannelApplicationLayer.java:186)
          at org.jenkinsci.remoting.protocol.ApplicationLayer.onRecv(ApplicationLayer.java:207)
          at org.jenkinsci.remoting.protocol.ProtocolStack$Ptr.onRecv(ProtocolStack.java:669)
          at org.jenkinsci.remoting.protocol.impl.SSLEngineFilterLayer.processRead(SSLEngineFilterLayer.java:369)
          at org.jenkinsci.remoting.protocol.impl.SSLEngineFilterLayer.onRecv(SSLEngineFilterLayer.java:117)
          at org.jenkinsci.remoting.protocol.ProtocolStack$Ptr.onRecv(ProtocolStack.java:669)
          at org.jenkinsci.remoting.protocol.NetworkLayer.onRead(NetworkLayer.java:136)
          at org.jenkinsci.remoting.protocol.impl.BIONetworkLayer.access$2200(BIONetworkLayer.java:48)
          at org.jenkinsci.remoting.protocol.impl.BIONetworkLayer$Reader.run(BIONetworkLayer.java:283)
          at java.util.concurrent.ThreadPoolExecutor.runWorker(Unknown Source)
          at java.util.concurrent.ThreadPoolExecutor$Worker.run(Unknown Source)
          at hudson.remoting.Engine$1$1.run(Engine.java:98)
          ... 1 more
  Caused by: Command close created at
          at hudson.remoting.Command.&lt;init&gt;(Command.java:65)
          at hudson.remoting.Channel$CloseCommand.&lt;init&gt;(Channel.java:1265)
          at hudson.remoting.Channel$CloseCommand.&lt;init&gt;(Channel.java:1263)
          at hudson.remoting.Channel.close(Channel.java:1436)
          at hudson.remoting.Channel.close(Channel.java:1403)
          at hudson.slaves.SlaveComputer.closeChannel(SlaveComputer.java:769)
          at hudson.slaves.SlaveComputer.access$800(SlaveComputer.java:102)
          at hudson.slaves.SlaveComputer$3.run(SlaveComputer.java:687)
          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)
  
  
  My pipeline error in jenkins is:
  
  java.nio.file.NoSuchFileException: \etc\hostname
      at sun.nio.fs.WindowsException.translateToIOException(Unknown Source)
      at sun.nio.fs.WindowsException.rethrowAsIOException(Unknown Source)
      at sun.nio.fs.WindowsException.rethrowAsIOException(Unknown Source)
      at sun.nio.fs.WindowsFileSystemProvider.newByteChannel(Unknown Source)
      at java.nio.file.Files.newByteChannel(Unknown Source)
      at java.nio.file.Files.newByteChannel(Unknown Source)
      at java.nio.file.spi.FileSystemProvider.newInputStream(Unknown Source)
      at java.nio.file.Files.newInputStream(Unknown Source)
      at hudson.FilePath$Read.invoke(FilePath.java:2010)
      at hudson.FilePath$Read.invoke(FilePath.java:2002)
      at hudson.FilePath$FileCallableWrapper.call(FilePath.java:3078)
      at hudson.remoting.UserRequest.perform(UserRequest.java:181)
      at hudson.remoting.UserRequest.perform(UserRequest.java:52)
      at hudson.remoting.Request$2.run(Request.java:336)
      at hudson.remoting.InterceptingExecutorService$1.call(InterceptingExecutorService.java:68)
      at java.util.concurrent.FutureTask.run(Unknown Source)
      at java.util.concurrent.ThreadPoolExecutor.runWorker(Unknown Source)
      at java.util.concurrent.ThreadPoolExecutor$Worker.run(Unknown Source)
      at hudson.remoting.Engine$1$1.run(Engine.java:98)
      at java.lang.Thread.run(Unknown Source)
  Caused: java.io.IOException
      at hudson.remoting.FastPipedInputStream.read(FastPipedInputStream.java:169)
      at sun.nio.cs.StreamDecoder.readBytes(StreamDecoder.java:284)
      at sun.nio.cs.StreamDecoder.implRead(StreamDecoder.java:326)
      at sun.nio.cs.StreamDecoder.read(StreamDecoder.java:178)
      at java.io.InputStreamReader.read(InputStreamReader.java:184)
      at java.io.Reader.read(Reader.java:140)
      at org.apache.commons.io.IOUtils.copyLarge(IOUtils.java:2001)
      at org.apache.commons.io.IOUtils.copyLarge(IOUtils.java:1980)
      at org.apache.commons.io.IOUtils.copy(IOUtils.java:1957)
      at org.apache.commons.io.IOUtils.copy(IOUtils.java:1907)
      at org.apache.commons.io.IOUtils.toString(IOUtils.java:778)
      at org.apache.commons.io.IOUtils.toString(IOUtils.java:759)
      at hudson.FilePath.readToString(FilePath.java:2089)
      at org.csanchez.jenkins.plugins.kubernetes.pipeline.KubernetesNodeContext.getPodName(KubernetesNodeContext.java:42)
      at org.csanchez.jenkins.plugins.kubernetes.pipeline.ContainerStepExecution.start(ContainerStepExecution.java:91)
      at org.jenkinsci.plugins.workflow.cps.DSL.invokeStep(DSL.java:229)
      at org.jenkinsci.plugins.workflow.cps.DSL.invokeMethod(DSL.java:153)
      at org.jenkinsci.plugins.workflow.cps.CpsScript.invokeMethod(CpsScript.java:122)
      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: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:133)
      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 com.cloudbees.groovy.cps.sandbox.SandboxInvoker.methodCall(SandboxInvoker.java:17)
      at WorkflowScript.run(WorkflowScript:8)
      at org.jenkinsci.plugins.pipeline.modeldefinition.ModelInterpreter.delegateAndExecute(jar:file:/var/jenkins_home/plugins/pipeline-model-definition/WEB-INF/lib/pipeline-model-definition.jar!/org/jenkinsci/plugins/pipeline/modeldefinition/ModelInterpreter.groovy:138)
      at org.jenkinsci.plugins.pipeline.modeldefinition.ModelInterpreter.executeSingleStage(jar:file:/var/jenkins_home/plugins/pipeline-model-definition/WEB-INF/lib/pipeline-model-definition.jar!/org/jenkinsci/plugins/pipeline/modeldefinition/ModelInterpreter.groovy:569)
      at org.jenkinsci.plugins.pipeline.modeldefinition.ModelInterpreter.catchRequiredContextForNode(jar:file:/var/jenkins_home/plugins/pipeline-model-definition/WEB-INF/lib/pipeline-model-definition.jar!/org/jenkinsci/plugins/pipeline/modeldefinition/ModelInterpreter.groovy:322)
      at org.jenkinsci.plugins.pipeline.modeldefinition.ModelInterpreter.catchRequiredContextForNode(jar:file:/var/jenkins_home/plugins/pipeline-model-definition/WEB-INF/lib/pipeline-model-definition.jar!/org/jenkinsci/plugins/pipeline/modeldefinition/ModelInterpreter.groovy:320)
      at org.jenkinsci.plugins.pipeline.modeldefinition.ModelInterpreter.executeSingleStage(jar:file:/var/jenkins_home/plugins/pipeline-model-definition/WEB-INF/lib/pipeline-model-definition.jar!/org/jenkinsci/plugins/pipeline/modeldefinition/ModelInterpreter.groovy:568)
      at org.jenkinsci.plugins.pipeline.modeldefinition.ModelInterpreter.evaluateStage(jar:file:/var/jenkins_home/plugins/pipeline-model-definition/WEB-INF/lib/pipeline-model-definition.jar!/org/jenkinsci/plugins/pipeline/modeldefinition/ModelInterpreter.groovy:223)
      at org.jenkinsci.plugins.pipeline.modeldefinition.ModelInterpreter.toolsBlock(jar:file:/var/jenkins_home/plugins/pipeline-model-definition/WEB-INF/lib/pipeline-model-definition.jar!/org/jenkinsci/plugins/pipeline/modeldefinition/ModelInterpreter.groovy:456)
      at org.jenkinsci.plugins.pipeline.modeldefinition.ModelInterpreter.toolsBlock(jar:file:/var/jenkins_home/plugins/pipeline-model-definition/WEB-INF/lib/pipeline-model-definition.jar!/org/jenkinsci/plugins/pipeline/modeldefinition/ModelInterpreter.groovy:455)
      at org.jenkinsci.plugins.pipeline.modeldefinition.ModelInterpreter.evaluateStage(jar:file:/var/jenkins_home/plugins/pipeline-model-definition/WEB-INF/lib/pipeline-model-definition.jar!/org/jenkinsci/plugins/pipeline/modeldefinition/ModelInterpreter.groovy:221)
      at org.jenkinsci.plugins.pipeline.modeldefinition.ModelInterpreter.withEnvBlock(jar:file:/var/jenkins_home/plugins/pipeline-model-definition/WEB-INF/lib/pipeline-model-definition.jar!/org/jenkinsci/plugins/pipeline/modeldefinition/ModelInterpreter.groovy:366)
      at org.jenkinsci.plugins.pipeline.modeldefinition.ModelInterpreter.withEnvBlock(jar:file:/var/jenkins_home/plugins/pipeline-model-definition/WEB-INF/lib/pipeline-model-definition.jar!/org/jenkinsci/plugins/pipeline/modeldefinition/ModelInterpreter.groovy:365)
      at org.jenkinsci.plugins.pipeline.modeldefinition.ModelInterpreter.evaluateStage(jar:file:/var/jenkins_home/plugins/pipeline-model-definition/WEB-INF/lib/pipeline-model-definition.jar!/org/jenkinsci/plugins/pipeline/modeldefinition/ModelInterpreter.groovy:220)
      at org.jenkinsci.plugins.pipeline.modeldefinition.ModelInterpreter.withCredentialsBlock(jar:file:/var/jenkins_home/plugins/pipeline-model-definition/WEB-INF/lib/pipeline-model-definition.jar!/org/jenkinsci/plugins/pipeline/modeldefinition/ModelInterpreter.groovy:404)
      at org.jenkinsci.plugins.pipeline.modeldefinition.ModelInterpreter.withCredentialsBlock(jar:file:/var/jenkins_home/plugins/pipeline-model-definition/WEB-INF/lib/pipeline-model-definition.jar!/org/jenkinsci/plugins/pipeline/modeldefinition/ModelInterpreter.groovy:403)
      at org.jenkinsci.plugins.pipeline.modeldefinition.ModelInterpreter.evaluateStage(jar:file:/var/jenkins_home/plugins/pipeline-model-definition/WEB-INF/lib/pipeline-model-definition.jar!/org/jenkinsci/plugins/pipeline/modeldefinition/ModelInterpreter.groovy:219)
      at org.jenkinsci.plugins.pipeline.modeldefinition.ModelInterpreter.evaluateStage(jar:file:/var/jenkins_home/plugins/pipeline-model-definition/WEB-INF/lib/pipeline-model-definition.jar!/org/jenkinsci/plugins/pipeline/modeldefinition/ModelInterpreter.groovy:242)
      at org.jenkinsci.plugins.pipeline.modeldefinition.ModelInterpreter.inDeclarativeAgent(jar:file:/var/jenkins_home/plugins/pipeline-model-definition/WEB-INF/lib/pipeline-model-definition.jar!/org/jenkinsci/plugins/pipeline/modeldefinition/ModelInterpreter.groovy:494)
      at org.jenkinsci.plugins.pipeline.modeldefinition.ModelInterpreter.inDeclarativeAgent(jar:file:/var/jenkins_home/plugins/pipeline-model-definition/WEB-INF/lib/pipeline-model-definition.jar!/org/jenkinsci/plugins/pipeline/modeldefinition/ModelInterpreter.groovy:493)
      at org.jenkinsci.plugins.pipeline.modeldefinition.ModelInterpreter.evaluateStage(jar:file:/var/jenkins_home/plugins/pipeline-model-definition/WEB-INF/lib/pipeline-model-definition.jar!/org/jenkinsci/plugins/pipeline/modeldefinition/ModelInterpreter.groovy:239)
      at org.jenkinsci.plugins.pipeline.modeldefinition.ModelInterpreter.stageInput(jar:file:/var/jenkins_home/plugins/pipeline-model-definition/WEB-INF/lib/pipeline-model-definition.jar!/org/jenkinsci/plugins/pipeline/modeldefinition/ModelInterpreter.groovy:304)
      at org.jenkinsci.plugins.pipeline.modeldefinition.ModelInterpreter.stageInput(jar:file:/var/jenkins_home/plugins/pipeline-model-definition/WEB-INF/lib/pipeline-model-definition.jar!/org/jenkinsci/plugins/pipeline/modeldefinition/ModelInterpreter.groovy:303)
      at org.jenkinsci.plugins.pipeline.modeldefinition.ModelInterpreter.evaluateStage(jar:file:/var/jenkins_home/plugins/pipeline-model-definition/WEB-INF/lib/pipeline-model-definition.jar!/org/jenkinsci/plugins/pipeline/modeldefinition/ModelInterpreter.groovy:217)
      at org.jenkinsci.plugins.pipeline.modeldefinition.ModelInterpreter.inWrappers(jar:file:/var/jenkins_home/plugins/pipeline-model-definition/WEB-INF/lib/pipeline-model-definition.jar!/org/jenkinsci/plugins/pipeline/modeldefinition/ModelInterpreter.groovy:521)
      at org.jenkinsci.plugins.pipeline.modeldefinition.ModelInterpreter.inWrappers(jar:file:/var/jenkins_home/plugins/pipeline-model-definition/WEB-INF/lib/pipeline-model-definition.jar!/org/jenkinsci/plugins/pipeline/modeldefinition/ModelInterpreter.groovy:520)
      at org.jenkinsci.plugins.pipeline.modeldefinition.ModelInterpreter.evaluateStage(jar:file:/var/jenkins_home/plugins/pipeline-model-definition/WEB-INF/lib/pipeline-model-definition.jar!/org/jenkinsci/plugins/pipeline/modeldefinition/ModelInterpreter.groovy:200)
      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$ContinuationImpl.fixArg(FunctionCallBlock.java:82)
      at sun.reflect.GeneratedMethodAccessor164.invoke(Unknown Source)
      at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
      at java.lang.reflect.Method.invoke(Method.java:498)
      at com.cloudbees.groovy.cps.impl.ContinuationPtr$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:122)
      at org.codehaus.groovy.runtime.GroovyCategorySupport.use(GroovyCategorySupport.java:261)
      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:174)
      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
  </code></pre>
  
  <p>I tried matching the Java versions of master and slave, using the most recent remoting.jar file and changing protocol types. 
  Any help or ideas would be apreciated</p>