Virtual machine "-ubuntu-20170406-122-1" (slave title "-ubuntu-122-1") is to be started. Starting, waiting for 15000ms to let it fully boot up... Connecting slave client. ERROR: [03/12/19 08:51:16] [SSH] Error deleting file. java.io.IOException: Sorry, this connection is closed. at com.trilead.ssh2.transport.TransportManager.ensureConnected(TransportManager.java:600) at com.trilead.ssh2.transport.TransportManager.sendMessage(TransportManager.java:673) at com.trilead.ssh2.channel.ChannelManager.openSessionChannel(ChannelManager.java:572) at com.trilead.ssh2.Session.(Session.java:42) at com.trilead.ssh2.Connection.openSession(Connection.java:1145) at com.trilead.ssh2.Connection.exec(Connection.java:1566) at hudson.plugins.sshslaves.SSHLauncher$4.run(SSHLauncher.java:1299) 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) Caused by: java.net.SocketException: Connection reset at java.net.SocketInputStream.read(SocketInputStream.java:210) at java.net.SocketInputStream.read(SocketInputStream.java:141) at com.trilead.ssh2.crypto.cipher.CipherInputStream.fill_buffer(CipherInputStream.java:41) at com.trilead.ssh2.crypto.cipher.CipherInputStream.internal_read(CipherInputStream.java:52) at com.trilead.ssh2.crypto.cipher.CipherInputStream.getBlock(CipherInputStream.java:79) at com.trilead.ssh2.crypto.cipher.CipherInputStream.read(CipherInputStream.java:108) at com.trilead.ssh2.transport.TransportConnection.receiveMessage(TransportConnection.java:232) at com.trilead.ssh2.transport.TransportManager.receiveLoop(TransportManager.java:706) at com.trilead.ssh2.transport.TransportManager$1.run(TransportManager.java:502) ... 1 more [03/12/19 08:51:16] [SSH] Connection closed. SSHLauncher{host='192.168.122.101', port=22, credentialsId='83c206e7-6a41-41c5-b5f1-231eb7e88482', jvmOptions='', javaPath='', prefixStartSlaveCmd='', suffixStartSlaveCmd='', launchTimeoutSeconds=6000, maxNumRetries=10, retryWaitTime=15, sshHostKeyVerificationStrategy=hudson.plugins.sshslaves.verifiers.NonVerifyingKeyVerificationStrategy, tcpNoDelay=true, trackCredentials=true} [03/12/19 08:51:16] [SSH] Opening SSH connection to 192.168.122.101:22. [03/12/19 08:51:16] [SSH] WARNING: SSH Host Keys are not being verified. Man-in-the-middle attacks may be possible against this connection. [03/12/19 08:51:16] [SSH] Authentication successful. [03/12/19 08:51:16] [SSH] The remote user's environment is: BASH=/bin/bash BASHOPTS=cmdhist:complete_fullquote:extquote:force_fignore:hostcomplete:interactive_comments:progcomp:promptvars:sourcepath BASH_ALIASES=() BASH_ARGC=() BASH_ARGV=() BASH_CMDS=() BASH_EXECUTION_STRING=set BASH_LINENO=() BASH_SOURCE=() BASH_VERSINFO=([0]="4" [1]="4" [2]="19" [3]="1" [4]="release" [5]="x86_64-pc-linux-gnu") BASH_VERSION='4.4.19(1)-release' DBUS_SESSION_BUS_ADDRESS=unix:path=/run/user/998/bus DIRSTACK=() EUID=998 GROUPS=() HOME=/home/jenkins HOSTNAME=VirtualBox HOSTTYPE=x86_64 IFS=$' \t\n' LANG=en_US.UTF-8 LOGNAME=jenkins MACHTYPE=x86_64-pc-linux-gnu MAIL=/var/mail/jenkins OPTERR=1 OPTIND=1 OSTYPE=linux-gnu PATH=/usr/local/sbin:/usr/local/bin:/usr/sbin:/usr/bin:/sbin:/bin:/usr/games:/usr/local/games PIPESTATUS=([0]="0") PPID=1494 PS4='+ ' PWD=/home/jenkins SHELL=/bin/bash SHELLOPTS=braceexpand:hashall:interactive-comments SHLVL=1 SSH_CLIENT='192.168.122.1 58906 22' SSH_CONNECTION='192.168.122.1 58906 192.168.122.101 22' TERM=dumb UID=998 USER=jenkins XDG_RUNTIME_DIR=/run/user/998 XDG_SESSION_ID=2 _=']' ftp_proxy=http://localhost:3128 http_proxy=http://localhost:3128 https_proxy=http://localhost:3128 no_proxy=localhost,127.0.0.1,::1 [03/12/19 08:51:16] [SSH] Checking java version of /home/jenkins/jdk/bin/java Couldn't figure out the Java version of /home/jenkins/jdk/bin/java bash: /home/jenkins/jdk/bin/java: No such file or directory [03/12/19 08:51:16] [SSH] Checking java version of /usr/lib/jvm/java-8-oracle/bin/java [03/12/19 08:51:17] [SSH] /usr/lib/jvm/java-8-oracle/bin/java -version returned 1.8.0_201. [03/12/19 08:51:17] [SSH] Starting sftp client. [03/12/19 08:51:17] [SSH] Copying latest remoting.jar... [03/12/19 08:51:17] [SSH] Copied 776,265 bytes. Expanded the channel window size to 4MB [03/12/19 08:51:17] [SSH] Starting agent process: cd "/home/jenkins" && /usr/lib/jvm/java-8-oracle/bin/java -jar remoting.jar -workDir /home/jenkins Mar 12, 2019 8:51:17 AM org.jenkinsci.remoting.engine.WorkDirManager initializeWorkDir INFO: Using /home/jenkins/remoting as a remoting work directory Both error and output logs will be printed to /home/jenkins/remoting <===[JENKINS REMOTING CAPACITY]===>channel started Remoting version: 3.25 This is a Unix agent Evacuated stdout Agent successfully connected and online Slave JVM has not reported exit code. Is it still running? ERROR: Connection terminated java.io.EOFException at java.io.ObjectInputStream$PeekInputStream.readFully(ObjectInputStream.java:2681) at java.io.ObjectInputStream$BlockDataInputStream.readShort(ObjectInputStream.java:3156) at java.io.ObjectInputStream.readStreamHeader(ObjectInputStream.java:862) at java.io.ObjectInputStream.(ObjectInputStream.java:358) at hudson.remoting.ObjectInputStreamEx.(ObjectInputStreamEx.java:49) at hudson.remoting.Command.readFrom(Command.java:140) at hudson.remoting.Command.readFrom(Command.java:126) at hudson.remoting.AbstractSynchronousByteArrayCommandTransport.read(AbstractSynchronousByteArrayCommandTransport.java:36) at hudson.remoting.SynchronousCommandTransport$ReaderThread.run(SynchronousCommandTransport.java:63) Caused: java.io.IOException: Unexpected termination of the channel at hudson.remoting.SynchronousCommandTransport$ReaderThread.run(SynchronousCommandTransport.java:77) [03/12/19 08:51:26] [SSH] Connection closed.