Warning: JnlpProtocol3 is disabled by default, use JNLP_PROTOCOL_OPTS to alter the behavior
Dec 10, 2020 10:19:53 AM hudson.remoting.jnlp.Main createEngine
INFO: Setting up agent: dockerbuild-4pf2x-hbgvw
Dec 10, 2020 10:19:53 AM hudson.remoting.jnlp.Main$CuiListener <init>
INFO: Jenkins agent is running in headless mode.
Dec 10, 2020 10:19:53 AM hudson.remoting.Engine startEngine
INFO: Using Remoting version: 3.35
Dec 10, 2020 10:19:53 AM org.jenkinsci.remoting.engine.WorkDirManager initializeWorkDir
INFO: Using /home/jenkins/agent/remoting as a remoting work directory
Dec 10, 2020 10:19:53 AM org.jenkinsci.remoting.engine.WorkDirManager setupLogging
INFO: Both error and output logs will be printed to /home/jenkins/agent/remoting
Dec 10, 2020 10:19:53 AM hudson.remoting.jnlp.Main$CuiListener status
INFO: Locating server among http://jenkins-master:10000/
Dec 10, 2020 10:19:53 AM org.jenkinsci.remoting.engine.JnlpAgentEndpointResolver resolve
INFO: Remoting server accepts the following protocols: [JNLP4-connect, Ping]
Dec 10, 2020 10:19:54 AM org.jenkinsci.remoting.engine.JnlpAgentEndpointResolver resolve
INFO: Remoting TCP connection tunneling is enabled. Skipping the TCP Agent Listener Port availability check
Dec 10, 2020 10:19:54 AM hudson.remoting.jnlp.Main$CuiListener status
INFO: Agent discovery successful
  Agent address: jenkins-master
  Agent port:    10003
  Identity:      56:69:6c:8f:c1:8b:cd:7e:c2:3f:f6:73:7e:a7:12:3f
Dec 10, 2020 10:19:54 AM hudson.remoting.jnlp.Main$CuiListener status
INFO: Handshaking
Dec 10, 2020 10:19:54 AM hudson.remoting.jnlp.Main$CuiListener status
INFO: Connecting to jenkins-master:10003
Dec 10, 2020 10:19:54 AM hudson.remoting.jnlp.Main$CuiListener status
INFO: Trying protocol: JNLP4-connect
Dec 10, 2020 10:19:54 AM hudson.remoting.jnlp.Main$CuiListener status
INFO: Remote identity confirmed: 56:69:6c:8f:c1:8b:cd:7e:c2:3f:f6:73:7e:a7:12:3f
Dec 10, 2020 10:19:55 AM hudson.remoting.jnlp.Main$CuiListener status
INFO: Connected
Dec 10, 2020 10:20:02 AM org.eclipse.jgit.util.FS$FileStoreAttributes saveToConfig
WARNING: locking FileBasedConfig[/home/jenkins/.config/jgit/config] failed after 5 retries
Dec 10, 2020 10:20:05 AM org.csanchez.jenkins.plugins.kubernetes.KubernetesSlave$SlaveDisconnector call
INFO: Disabled slave engine reconnects.
Dec 10, 2020 10:20:05 AM hudson.util.ProcessTree get
WARNING: Error while determining if vetoers exist
hudson.remoting.RequestAbortedException: java.nio.channels.ClosedChannelException
        at hudson.remoting.Request.abort(Request.java:340)
        at hudson.remoting.Channel.terminate(Channel.java:1038)
        at org.jenkinsci.remoting.protocol.impl.ChannelApplicationLayer.onReadClosed(ChannelApplicationLayer.java:209)
        at org.jenkinsci.remoting.protocol.ApplicationLayer.onRecvClosed(ApplicationLayer.java:221)
        at org.jenkinsci.remoting.protocol.ProtocolStack$Ptr.onRecvClosed(ProtocolStack.java:816)
        at org.jenkinsci.remoting.protocol.FilterLayer.onRecvClosed(FilterLayer.java:287)
        at org.jenkinsci.remoting.protocol.impl.SSLEngineFilterLayer.onRecvClosed(SSLEngineFilterLayer.java:181)
        at org.jenkinsci.remoting.protocol.impl.SSLEngineFilterLayer.switchToNoSecure(SSLEngineFilterLayer.java:283)
        at org.jenkinsci.remoting.protocol.impl.SSLEngineFilterLayer.processWrite(SSLEngineFilterLayer.java:503)
        at org.jenkinsci.remoting.protocol.impl.SSLEngineFilterLayer.processQueuedWrites(SSLEngineFilterLayer.java:248)
        at org.jenkinsci.remoting.protocol.impl.SSLEngineFilterLayer.doSend(SSLEngineFilterLayer.java:200)
        at org.jenkinsci.remoting.protocol.impl.SSLEngineFilterLayer.doCloseSend(SSLEngineFilterLayer.java:213)
        at org.jenkinsci.remoting.protocol.ProtocolStack$Ptr.doCloseSend(ProtocolStack.java:784)
        at org.jenkinsci.remoting.protocol.ApplicationLayer.doCloseWrite(ApplicationLayer.java:172)
        at org.jenkinsci.remoting.protocol.impl.ChannelApplicationLayer$ByteBufferCommandTransport.closeWrite(ChannelApplicationLayer.java:314)
        at hudson.remoting.Channel.close(Channel.java:1450)
        at hudson.remoting.Channel.close(Channel.java:1403)
        at hudson.remoting.Channel$CloseCommand.execute(Channel.java:1270)
        at hudson.remoting.Channel$1.handle(Channel.java:563)
        at hudson.remoting.AbstractByteBufferCommandTransport.processCommand(AbstractByteBufferCommandTransport.java:203)
        at hudson.remoting.AbstractByteBufferCommandTransport.receive(AbstractByteBufferCommandTransport.java:189)
        at org.jenkinsci.remoting.protocol.impl.ChannelApplicationLayer.onRead(ChannelApplicationLayer.java:187)
        at org.jenkinsci.remoting.protocol.ApplicationLayer.onRecv(ApplicationLayer.java:206)
        at org.jenkinsci.remoting.protocol.ProtocolStack$Ptr.onRecv(ProtocolStack.java:668)
        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:668)
        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(ThreadPoolExecutor.java:1149)
        at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:624)
        at hudson.remoting.Engine$1.lambda$newThread$0(Engine.java:97)
        at java.lang.Thread.run(Thread.java:748)
        Suppressed: hudson.remoting.Channel$CallSiteStackTrace: Remote call to JNLP4-connect connection to jenkins-master/x.x.x.x:10003
                at hudson.remoting.Channel.attachCallSiteStackTrace(Channel.java:1741)
                at hudson.remoting.Request.call(Request.java:202)
                at hudson.remoting.RemoteInvocationHandler.invoke(RemoteInvocationHandler.java:286)
                at com.sun.proxy.$Proxy5.fetch3(Unknown Source)
                at hudson.remoting.RemoteClassLoader.findClass(RemoteClassLoader.java:209)
                at java.lang.ClassLoader.loadClass(ClassLoader.java:424)
                at java.lang.ClassLoader.loadClass(ClassLoader.java:357)
                at hudson.util.ProcessTree.get(ProcessTree.java:432)
                at hudson.Launcher$RemoteLauncher$KillTask.call(Launcher.java:1103)
                at hudson.Launcher$RemoteLauncher$KillTask.call(Launcher.java:1094)
                at hudson.remoting.UserRequest.perform(UserRequest.java:211)
                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(FutureTask.java:266)
                ... 4 more
Caused by: java.nio.channels.ClosedChannelException
        ... 32 more
 
Dec 10, 2020 10:20:05 AM hudson.remoting.jnlp.Main$CuiListener status
INFO: Terminated
Dec 10, 2020 10:20:05 AM hudson.util.ProcessTree get
WARNING: Failed to load winp. Reverting to the default
java.lang.NoClassDefFoundError: hudson/util/ProcessTree$Linux$LinuxProcess
        at hudson.util.ProcessTree.get(ProcessTree.java:451)
        at hudson.Launcher$RemoteLauncher$KillTask.call(Launcher.java:1103)
        at hudson.Launcher$RemoteLauncher$KillTask.call(Launcher.java:1094)
        at hudson.remoting.UserRequest.perform(UserRequest.java:211)
        at hudson.remoting.UserRequest.perform(UserRequest.java:54)
        at hudson.remoting.Request$2.run(Request.java:369)
        at hudson.remoting.InterceptingExecutorService$1.call(InterceptingExecutorService.java:72)
        at java.util.concurrent.FutureTask.run(FutureTask.java:266)
        at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1149)
        at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:624)
        at hudson.remoting.Engine$1.lambda$newThread$0(Engine.java:97)
        at java.lang.Thread.run(Thread.java:748)
Caused by: java.lang.ClassNotFoundException: hudson.util.ProcessTree$Linux$LinuxProcess
        at java.net.URLClassLoader.findClass(URLClassLoader.java:382)
        at hudson.remoting.RemoteClassLoader.findClass(RemoteClassLoader.java:171)
        at java.lang.ClassLoader.loadClass(ClassLoader.java:424)
        at java.lang.ClassLoader.loadClass(ClassLoader.java:357)
        ... 12 more
 
Dec 10, 2020 10:20:05 AM hudson.remoting.Request$2 run
INFO: Failed to send back a reply to the request hudson.remoting.Request$2@7586ee1b: hudson.remoting.ChannelClosedException: Channel "hudson.remoting.Channel@71cdad61:JNLP4-connect connection to jenkins-master/x.x.x.x:10003": channel is already closed