java.util.concurrent.ExecutionException: java.io.IOException: Agent failed to connect, even though the launcher didn't report it. See the log output for details.
	at java.base/java.util.concurrent.FutureTask.report(FutureTask.java:122)
	at java.base/java.util.concurrent.FutureTask.get(FutureTask.java:191)
	at hudson.node_monitors.ResponseTimeMonitorTest.skipOfflineAgent(ResponseTimeMonitorTest.java:51)
	at java.base/java.lang.reflect.Method.invoke(Method.java:580)
	at org.jvnet.hudson.test.JenkinsRule$1.evaluate(JenkinsRule.java:659)
	at java.base/java.util.concurrent.FutureTask.run(FutureTask.java:317)
	at java.base/java.lang.Thread.run(Thread.java:1583)
Caused by: java.io.IOException: Agent failed to connect, even though the launcher didn't report it. See the log output for details.
	at hudson.slaves.SlaveComputer.lambda$_connect$0(SlaveComputer.java:325)
	at jenkins.util.ContextResettingExecutorService$2.call(ContextResettingExecutorService.java:46)
	at jenkins.security.ImpersonatingExecutorService$2.call(ImpersonatingExecutorService.java:80)
	at java.base/java.util.concurrent.FutureTask.run(FutureTask.java:317)
	at java.base/java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1144)
	at java.base/java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:642)
	... 1 more

0.174 [id=98]	INFO	o.jvnet.hudson.test.JenkinsRule#createWebServer2: Running on http://localhost:33737/jenkins/
   0.180 [id=98]	INFO	jenkins.model.Jenkins#<init>: Starting version 2.492.3-rc35800.d667ea_507cd3
   0.185 [id=111]	INFO	jenkins.InitReactorRunner$1#onAttained: Started initialization
   0.186 [id=115]	INFO	jenkins.InitReactorRunner$1#onAttained: Listed all plugins
   0.189 [id=116]	INFO	j.b.api.BouncyCastlePlugin#start: /home/jenkins/agent/workspace/Core_jenkins_PR-10417/test/target/j h14656213209941423601/plugins/bouncycastle-api/WEB-INF/optional-lib not found; for non RealJenkinsRule this is fine and can be ignored.
   0.378 [id=114]	INFO	jenkins.InitReactorRunner$1#onAttained: Prepared all plugins
   0.380 [id=112]	INFO	jenkins.InitReactorRunner$1#onAttained: Started all plugins
   0.381 [id=112]	INFO	jenkins.InitReactorRunner$1#onAttained: Augmented all extensions
   0.633 [id=110]	INFO	jenkins.InitReactorRunner$1#onAttained: System config loaded
   0.634 [id=114]	INFO	jenkins.InitReactorRunner$1#onAttained: System config adapted
   0.634 [id=114]	INFO	jenkins.InitReactorRunner$1#onAttained: Loaded all jobs
   0.635 [id=115]	INFO	jenkins.InitReactorRunner$1#onAttained: Configuration for all jobs updated
   0.670 [id=111]	INFO	jenkins.InitReactorRunner$1#onAttained: Completed initialization
   2.174 [id=96]	INFO	o.j.h.test.SimpleCommandLauncher#launch: agent launched for slave0
   2.294 [id=91]	WARNING	o.j.h.test.SimpleCommandLauncher#launch
java.io.EOFException: unexpected stream termination
	at hudson.remoting.ChannelBuilder.negotiate(ChannelBuilder.java:478)
	at hudson.remoting.ChannelBuilder.build(ChannelBuilder.java:422)
	at hudson.slaves.SlaveComputer.setChannel(SlaveComputer.java:440)
	at hudson.slaves.SlaveComputer.setChannel(SlaveComputer.java:407)
	at org.jvnet.hudson.test.SimpleCommandLauncher.launch(SimpleCommandLauncher.java:83)
	at hudson.slaves.SlaveComputer.lambda$_connect$0(SlaveComputer.java:297)
	at jenkins.util.ContextResettingExecutorService$2.call(ContextResettingExecutorService.java:46)
	at jenkins.security.ImpersonatingExecutorService$2.call(ImpersonatingExecutorService.java:80)
	at java.base/java.util.concurrent.FutureTask.run(FutureTask.java:317)
	at java.base/java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1144)
	at java.base/java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:642)
	at java.base/java.lang.Thread.run(Thread.java:1583)
   2.299 [id=98]	INFO	hudson.lifecycle.Lifecycle#onStatusUpdate: Stopping Jenkins
   2.306 [id=77]	INFO	o.j.h.test.SimpleCommandLauncher#afterDisconnect: killed Process[pid=76752, exitValue=143] with {HUDSON_COOKIE=8604a1c0-a06c-446f-8a40-09be24df6028} for slave0
   2.307 [id=140]	INFO	o.j.h.test.SimpleCommandLauncher#afterDisconnect: no process for slave0
   2.307 [id=139]	INFO	o.j.h.test.SimpleCommandLauncher#afterDisconnect: no process for slave0
   2.314 [id=98]	INFO	hudson.lifecycle.Lifecycle#onStatusUpdate: Jenkins stopped
   2.419 [id=98]	INFO	o.j.h.t.TemporaryDirectoryAllocator#dispose: deleting /home/jenkins/agent/workspace/Core_jenkins_PR-10417/test/target/j h14656213209941423601

=== Starting skipOfflineAgent(hudson.node_monitors.ResponseTimeMonitorTest)