Please, fill the Jira issue with the steps to replicate the issue, add the details of the environment you are using, Jenkins Core, plugins, OS, etc. Without that information is impossible to know if it is an issue or not. Also, before using Jira to create an issue, please, ask in the Google groups/Discord to be sure that is an actual issue.
https://www.jenkins.io/participate/report-issue/
slave setup done. ERROR: Failed to monitor for Architecture java.util.concurrent.TimeoutException at hudson.remoting.Request$1.get(Request.java:321) at hudson.remoting.Request$1.get(Request.java:240) at hudson.remoting.FutureAdapter.get(FutureAdapter.java:66) at hudson.node_monitors.AbstractAsyncNodeMonitorDescriptor.monitorDetailed(AbstractAsyncNodeMonitorDescriptor.java:112) at hudson.node_monitors.AbstractAsyncNodeMonitorDescriptor.monitor(AbstractAsyncNodeMonitorDescriptor.java:76) at hudson.node_monitors.AbstractNodeMonitorDescriptor$Record.run(AbstractNodeMonitorDescriptor.java:305) ERROR: Failed to monitor for Clock Difference java.util.concurrent.TimeoutException at hudson.remoting.Request$1.get(Request.java:321) at hudson.remoting.Request$1.get(Request.java:240) at hudson.remoting.FutureAdapter.get(FutureAdapter.java:66) at hudson.node_monitors.AbstractAsyncNodeMonitorDescriptor.monitorDetailed(AbstractAsyncNodeMonitorDescriptor.java:112) at hudson.node_monitors.AbstractAsyncNodeMonitorDescriptor.monitor(AbstractAsyncNodeMonitorDescriptor.java:76) at hudson.node_monitors.AbstractNodeMonitorDescriptor$Record.run(AbstractNodeMonitorDescriptor.java:305) ERROR: Failed to monitor for Free Disk Space java.util.concurrent.TimeoutException at hudson.remoting.Request$1.get(Request.java:321) at hudson.remoting.Request$1.get(Request.java:240) at hudson.remoting.FutureAdapter.get(FutureAdapter.java:66) at hudson.node_monitors.AbstractAsyncNodeMonitorDescriptor.monitorDetailed(AbstractAsyncNodeMonitorDescriptor.java:112) at hudson.node_monitors.AbstractAsyncNodeMonitorDescriptor.monitor(AbstractAsyncNodeMonitorDescriptor.java:76) at hudson.node_monitors.AbstractNodeMonitorDescriptor$Record.run(AbstractNodeMonitorDescriptor.java:305) ERROR: Failed to monitor for Free Swap Space java.util.concurrent.TimeoutException at hudson.remoting.Request$1.get(Request.java:321) at hudson.remoting.Request$1.get(Request.java:240) at hudson.remoting.FutureAdapter.get(FutureAdapter.java:66) at hudson.node_monitors.AbstractAsyncNodeMonitorDescriptor.monitorDetailed(AbstractAsyncNodeMonitorDescriptor.java:112) at hudson.node_monitors.AbstractAsyncNodeMonitorDescriptor.monitor(AbstractAsyncNodeMonitorDescriptor.java:76) at hudson.node_monitors.AbstractNodeMonitorDescriptor$Record.run(AbstractNodeMonitorDescriptor.java:305) ERROR: Failed to monitor for Response Time java.util.concurrent.TimeoutException at hudson.remoting.Request$1.get(Request.java:321) at hudson.remoting.Request$1.get(Request.java:240) at hudson.remoting.FutureAdapter.get(FutureAdapter.java:66) at hudson.node_monitors.AbstractAsyncNodeMonitorDescriptor.monitorDetailed(AbstractAsyncNodeMonitorDescriptor.java:112) at hudson.node_monitors.ResponseTimeMonitor$1.monitor(ResponseTimeMonitor.java:56) at hudson.node_monitors.AbstractNodeMonitorDescriptor$Record.run(AbstractNodeMonitorDescriptor.java:305) ERROR: Failed to monitor for Free Temp Space java.util.concurrent.TimeoutException at hudson.remoting.Request$1.get(Request.java:321) at hudson.remoting.Request$1.get(Request.java:240) at hudson.remoting.FutureAdapter.get(FutureAdapter.java:66) at hudson.node_monitors.AbstractAsyncNodeMonitorDescriptor.monitorDetailed(AbstractAsyncNodeMonitorDescriptor.java:112) at hudson.node_monitors.AbstractAsyncNodeMonitorDescriptor.monitor(AbstractAsyncNodeMonitorDescriptor.java:76) at hudson.node_monitors.AbstractNodeMonitorDescriptor$Record.run(AbstractNodeMonitorDescriptor.java:305) ERROR: Unexpected error in launching an agent. This is probably a bug in Jenkins