SSHLauncher{host='172.18.24.195', port=52631, credentialsId='InstanceIdentity', jvmOptions='', javaPath='', prefixStartSlaveCmd='', suffixStartSlaveCmd='', launchTimeoutSeconds=60, maxNumRetries=10, retryWaitTime=15, sshHostKeyVerificationStrategy=hudson.plugins.sshslaves.verifiers.NonVerifyingKeyVerificationStrategy, tcpNoDelay=true, trackCredentials=true}
[07/01/21 09:22:58] [SSH] Opening SSH connection to 172.18.24.195:52631.
[07/01/21 09:22:58] [SSH] WARNING: SSH Host Keys are not being verified. Man-in-the-middle attacks may be possible against this connection.
[07/01/21 09:22:58] [SSH] Authentication successful.
[07/01/21 09:22:58] [SSH] The remote user's environment is:
BASH=/bin/bash
BASHOPTS=checkwinsize:cmdhist:complete_fullquote:extquote:force_fignore:globasciiranges:hostcomplete:interactive_comments:progcomp:promptvars:sourcepath
BASH_ALIASES=()
BASH_ARGC=([0]="0")
BASH_ARGV=()
BASH_CMDS=()
BASH_EXECUTION_STRING=set
BASH_LINENO=()
BASH_SOURCE=()
BASH_VERSINFO=([0]="5" [1]="0" [2]="3" [3]="1" [4]="release" [5]="x86_64-pc-linux-gnu")
BASH_VERSION='5.0.3(1)-release'
DIRSTACK=()
EUID=1000
GROUPS=()
HOME=/home/jenkins
HOSTNAME=a5eeef5a4102
HOSTTYPE=x86_64
IFS=$' \t\n'
JAVA_HOME=/usr/local/openjdk-8
JAVA_VERSION=8u282
JENKINS_AGENT_HOME=/home/jenkins
JENKINS_SLAVE_SSH_PUBKEY='ssh-rsa AAAAB3NzaC1yc2EAAAABIwAAAQEA1iPm4AVgs04ZT/3B85Arie5QAX/B6TP4J4DU5FKULnCwV/oJjn3dUV9H17RxEuLDH9/k4dHBb6EsY+PyUnlnR3VCcCI8Hpg1SqLbzksBbeRvSNcKoBshrONvZzYVLdHQ/IJGsXAddtrKtJI/hKx028T72l4by1NcV2VduW82rPKhVimDbSpBoLZsEpb/Dfv6mdpxc9acP3LRto5aLnCpRpbEFUcFiy090cWfbijfWfyPSIbF3780KjkjgYWpa8S27FUUxfZ51bGw9ziq4KAJ6FGgceBAF6ffQdgbgJo/uSWslIj+adGVQFW5/Zo80lNxNlFxH0FewRThsVk2XpmfjQ== root@swpsci06'
LOGNAME=jenkins
MACHTYPE=x86_64-pc-linux-gnu
MAIL=/var/mail/jenkins
OPTERR=1
OPTIND=1
OSTYPE=linux-gnu
PATH=/usr/local/bin:/usr/bin:/bin:/usr/games
PIPESTATUS=([0]="0")
PPID=24
PS4='+ '
PWD=/home/jenkins
SHELL=/bin/bash
SHELLOPTS=braceexpand:hashall:interactive-comments
SHLVL=1
SSH_CLIENT='172.18.24.52 53028 22'
SSH_CONNECTION='172.18.24.52 53028 172.17.0.12 22'
TERM=dumb
UID=1000
USER=jenkins
_=']'
ERROR: class io.jenkins.docker.connector.DockerComputerSSHConnector$DockerSSHLauncher is missing its descriptor
java.lang.AssertionError: class io.jenkins.docker.connector.DockerComputerSSHConnector$DockerSSHLauncher is missing its descriptor
	at jenkins.model.Jenkins.getDescriptorOrDie(Jenkins.java:1598)
	at hudson.model.AbstractDescribableImpl.getDescriptor(AbstractDescribableImpl.java:42)
	at hudson.plugins.sshslaves.SSHLauncher.checkJavaIsInPath(SSHLauncher.java:529)
	at hudson.plugins.sshslaves.SSHLauncher.access$300(SSHLauncher.java:111)
	at hudson.plugins.sshslaves.SSHLauncher$1.call(SSHLauncher.java:449)
	at hudson.plugins.sshslaves.SSHLauncher$1.call(SSHLauncher.java:421)
	at java.util.concurrent.FutureTask.run(FutureTask.java:266)
	at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1149)
	at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:624)
	at java.lang.Thread.run(Thread.java:748)
[07/01/21 09:22:58] Launch failed - cleaning up connection
[07/01/21 09:22:58] [SSH] Connection closed.