title: Jenkins JNLP4-connect connection from xxx.xxx.xxx.xxx failed after the success of build procedure
body: <p>I got a failure after all the build procedure were finished without any errors.</p>
  
  <p>And I don't know why below error has occurred.</p>
  
  <p>This error has marked the status of a job as a failure even all the tests were successfully finished.
  FATAL: Remote call on JNLP4-connect connection from socautovm1.xxx.local/192.168.114.144:65033 failed
  Also:   hudson.remoting.Channel$CallSiteStackTrace: Remote call to JNLP4-connect connection from socautovm1.xxx.local/192.168.114.144:65033</p>
  
  <pre><code>at hudson.remoting.Channel.attachCallSiteStackTrace(Channel.java:1741)
          at hudson.remoting.UserRequest$ExceptionResponse.retrieve(UserRequest.java:357)
          at hudson.remoting.Channel.call(Channel.java:955)
          at hudson.Launcher$RemoteLauncher.kill(Launcher.java:1078)
          at hudson.model.AbstractBuild$AbstractBuildExecution.run(AbstractBuild.java:510)
          at hudson.model.Run.execute(Run.java:1815)
          at hudson.model.FreeStyleBuild.run(FreeStyleBuild.java:43)
          at hudson.model.ResourceController.execute(ResourceController.java:97)
          at hudson.model.Executor.run(Executor.java:429)
  java.lang.NoClassDefFoundError: Could not initialize class hudson.slaves.SlaveComputer
      at hudson.util.ProcessTree.get(ProcessTree.java:399)
      at hudson.Launcher$RemoteLauncher$KillTask.call(Launcher.java:1090)
      at hudson.Launcher$RemoteLauncher$KillTask.call(Launcher.java:1081)
      at hudson.remoting.UserRequest.perform(UserRequest.java:212)
      at hudson.remoting.UserRequest.perform(UserRequest.java:54)
      at hudson.remoting.Request$2.run(Request.java:369)
      at hudson.remoting.InterceptingExecutorService$1.call(InterceptingExecutorService.java:72)
      at java.util.concurrent.FutureTask.run(Unknown Source)
      at java.util.concurrent.ThreadPoolExecutor.runWorker(Unknown Source)
      at java.util.concurrent.ThreadPoolExecutor$Worker.run(Unknown Source)
      at hudson.remoting.Engine$1.lambda$newThread$0(Engine.java:93)
      at java.lang.Thread.run(Unknown Source)
  Caused: java.io.IOException: Remote call on JNLP4-connect connection from socautovm1.xxx.local/192.168.114.144:65033 failed
      at hudson.remoting.Channel.call(Channel.java:961)
      at hudson.Launcher$RemoteLauncher.kill(Launcher.java:1078)
      at hudson.model.AbstractBuild$AbstractBuildExecution.run(AbstractBuild.java:510)
      at hudson.model.Run.execute(Run.java:1815)
      at hudson.model.FreeStyleBuild.run(FreeStyleBuild.java:43)
      at hudson.model.ResourceController.execute(ResourceController.java:97)
      at hudson.model.Executor.run(Executor.java:429)
  </code></pre>