Found one Java-level deadlock:
=============================
"Handling POST /jenkins/view/QA/view/Verification/createItem : http-bio-8080-exec-189":
  waiting to lock monitor 0x000000004eba7ca8 (object 0x000000070032c4c8, a hudson.model.Hudson),
  which is held by "Handling POST /jenkins/view/RE/view/Onsite/view/Dev/job/RE-Onsite-Build-ATG-Stg/doRename : http-bio-8080-exec-140"
"Handling POST /jenkins/view/RE/view/Onsite/view/Dev/job/RE-Onsite-Build-ATG-Stg/doRename : http-bio-8080-exec-140":
  waiting to lock monitor 0x000000004f70e1e0 (object 0x0000000752e08ea0, a hudson.maven.MavenModuleSet),
  which is held by "Handling POST /jenkins/view/Maintenance/job/__tst1__/doDelete : http-bio-8080-exec-166"
"Handling POST /jenkins/view/Maintenance/job/__tst1__/doDelete : http-bio-8080-exec-166":
  waiting to lock monitor 0x000000004eba7ca8 (object 0x000000070032c4c8, a hudson.model.Hudson),
  which is held by "Handling POST /jenkins/view/RE/view/Onsite/view/Dev/job/RE-Onsite-Build-ATG-Stg/doRename : http-bio-8080-exec-140"

"Handling POST /jenkins/view/QA/view/Verification/createItem : http-bio-8080-exec-189":
        at jenkins.model.Jenkins.doCreateItem(Jenkins.java:2889)
        - waiting to lock <0x000000070032c4c8> (a hudson.model.Hudson)
        at jenkins.model.Jenkins.doCreateItem(Jenkins.java:312)
        at hudson.model.ListView.doCreateItem(ListView.java:262)
        at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
        at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:39)
        at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:25)
        at java.lang.reflect.Method.invoke(Method.java:597)
        at org.kohsuke.stapler.Function$InstanceFunction.invoke(Function.java:297)
        at org.kohsuke.stapler.Function.bindAndInvoke(Function.java:160)
        at org.kohsuke.stapler.Function.bindAndInvokeAndServeResponse(Function.java:95)
        at org.kohsuke.stapler.MetaClass$1.doDispatch(MetaClass.java:111)
        at org.kohsuke.stapler.NameBasedDispatcher.dispatch(NameBasedDispatcher.java:53)
        at org.kohsuke.stapler.Stapler.tryInvoke(Stapler.java:684)
        at org.kohsuke.stapler.Stapler.invoke(Stapler.java:777)
        at org.kohsuke.stapler.MetaClass$6.doDispatch(MetaClass.java:239)
        at org.kohsuke.stapler.NameBasedDispatcher.dispatch(NameBasedDispatcher.java:53)
        at org.kohsuke.stapler.Stapler.tryInvoke(Stapler.java:684)
        at org.kohsuke.stapler.Stapler.invoke(Stapler.java:777)
        at org.kohsuke.stapler.MetaClass$6.doDispatch(MetaClass.java:239)
        at org.kohsuke.stapler.NameBasedDispatcher.dispatch(NameBasedDispatcher.java:53)
        at org.kohsuke.stapler.Stapler.tryInvoke(Stapler.java:684)
        at org.kohsuke.stapler.Stapler.invoke(Stapler.java:777)
        at org.kohsuke.stapler.Stapler.invoke(Stapler.java:586)
        at org.kohsuke.stapler.Stapler.service(Stapler.java:217)
        at javax.servlet.http.HttpServlet.service(HttpServlet.java:722)
        at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:305)
        at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:210)
        at hudson.util.PluginServletFilter$1.doFilter(PluginServletFilter.java:96)
        at net.bull.javamelody.MonitoringFilter.doFilter(MonitoringFilter.java:208)
        at net.bull.javamelody.MonitoringFilter.doFilter(MonitoringFilter.java:181)
        at net.bull.javamelody.PluginMonitoringFilter.doFilter(PluginMonitoringFilter.java:86)
        at org.jvnet.hudson.plugins.monitoring.HudsonMonitoringFilter.doFilter(HudsonMonitoringFilter.java:84)

"Handling POST /jenkins/view/RE/view/Onsite/view/Dev/job/RE-Onsite-Build-ATG-Stg/doRename : http-bio-8080-exec-140":
        at hudson.model.AbstractProject.save(AbstractProject.java:278)
        - waiting to lock <0x0000000752e08ea0> (a hudson.maven.MavenModuleSet)
        at hudson.plugins.copyartifact.CopyArtifact$ListenerImpl.onRenamed(CopyArtifact.java:331)
        at hudson.model.AbstractItem.renameTo(AbstractItem.java:294)
        - locked <0x0000000709ca3ef8> (a hudson.model.FreeStyleProject)
        - locked <0x000000070032c4c8> (a hudson.model.Hudson)
        at hudson.model.Job.renameTo(Job.java:575)
        at hudson.model.Job.doDoRename(Job.java:1294)
        at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
        at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:39)
        at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:25)
        at java.lang.reflect.Method.invoke(Method.java:597)
        at org.kohsuke.stapler.Function$InstanceFunction.invoke(Function.java:297)
        at org.kohsuke.stapler.interceptor.RequirePOST$Processor.invoke(RequirePOST.java:29)
        at org.kohsuke.stapler.Function$InterceptedFunction.invoke(Function.java:398)
        at org.kohsuke.stapler.Function.bindAndInvoke(Function.java:160)
        at org.kohsuke.stapler.Function.bindAndInvokeAndServeResponse(Function.java:95)
        at org.kohsuke.stapler.MetaClass$1.doDispatch(MetaClass.java:111)
        at org.kohsuke.stapler.NameBasedDispatcher.dispatch(NameBasedDispatcher.java:53)
        at org.kohsuke.stapler.Stapler.tryInvoke(Stapler.java:684)
        at org.kohsuke.stapler.Stapler.invoke(Stapler.java:777)
        at org.kohsuke.stapler.MetaClass$6.doDispatch(MetaClass.java:239)
        at org.kohsuke.stapler.NameBasedDispatcher.dispatch(NameBasedDispatcher.java:53)
        at org.kohsuke.stapler.Stapler.tryInvoke(Stapler.java:684)
        at org.kohsuke.stapler.Stapler.invoke(Stapler.java:777)
        at org.kohsuke.stapler.MetaClass$6.doDispatch(MetaClass.java:239)
        at org.kohsuke.stapler.NameBasedDispatcher.dispatch(NameBasedDispatcher.java:53)
        at org.kohsuke.stapler.Stapler.tryInvoke(Stapler.java:684)
        at org.kohsuke.stapler.Stapler.invoke(Stapler.java:777)
        at org.kohsuke.stapler.MetaClass$6.doDispatch(MetaClass.java:239)
        at org.kohsuke.stapler.NameBasedDispatcher.dispatch(NameBasedDispatcher.java:53)
        at org.kohsuke.stapler.Stapler.tryInvoke(Stapler.java:684)
        at org.kohsuke.stapler.Stapler.invoke(Stapler.java:777)
        at org.kohsuke.stapler.MetaClass$6.doDispatch(MetaClass.java:239)
        at org.kohsuke.stapler.NameBasedDispatcher.dispatch(NameBasedDispatcher.java:53)
        at org.kohsuke.stapler.Stapler.tryInvoke(Stapler.java:684)
        at org.kohsuke.stapler.Stapler.invoke(Stapler.java:777)
        at org.kohsuke.stapler.Stapler.invoke(Stapler.java:586)
        at org.kohsuke.stapler.Stapler.service(Stapler.java:217)
        at javax.servlet.http.HttpServlet.service(HttpServlet.java:722)
        at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:305)

"Handling POST /jenkins/view/Maintenance/job/__tst1__/doDelete : http-bio-8080-exec-166":
        at jenkins.model.Jenkins.save(Jenkins.java:2635)
        - waiting to lock <0x000000070032c4c8> (a hudson.model.Hudson)
        at jenkins.model.Jenkins.onDeleted(Jenkins.java:2435)
        at jenkins.model.Jenkins.onDeleted(Jenkins.java:312)
        at hudson.model.AbstractItem.invokeOnDeleted(AbstractItem.java:524)
        at hudson.model.AbstractItem.delete(AbstractItem.java:511)
        - locked <0x0000000752e08ea0> (a hudson.maven.MavenModuleSet)
        at hudson.model.Job.delete(Job.java:585)
        - locked <0x0000000752e08ea0> (a hudson.maven.MavenModuleSet)
        at hudson.model.AbstractProject.doDoDelete(AbstractProject.java:1915)
        at sun.reflect.GeneratedMethodAccessor1652.invoke(Unknown Source)
        at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:25)
        at java.lang.reflect.Method.invoke(Method.java:597)
        at org.kohsuke.stapler.Function$InstanceFunction.invoke(Function.java:297)
        at org.kohsuke.stapler.interceptor.RequirePOST$Processor.invoke(RequirePOST.java:29)
        at org.kohsuke.stapler.Function$InterceptedFunction.invoke(Function.java:398)
        at org.kohsuke.stapler.Function.bindAndInvoke(Function.java:160)
        at org.kohsuke.stapler.Function.bindAndInvokeAndServeResponse(Function.java:95)
        at org.kohsuke.stapler.MetaClass$1.doDispatch(MetaClass.java:111)
        at org.kohsuke.stapler.NameBasedDispatcher.dispatch(NameBasedDispatcher.java:53)
        at org.kohsuke.stapler.Stapler.tryInvoke(Stapler.java:684)
        at org.kohsuke.stapler.Stapler.invoke(Stapler.java:777)
        at org.kohsuke.stapler.MetaClass$6.doDispatch(MetaClass.java:239)
        at org.kohsuke.stapler.NameBasedDispatcher.dispatch(NameBasedDispatcher.java:53)
        at org.kohsuke.stapler.Stapler.tryInvoke(Stapler.java:684)
        at org.kohsuke.stapler.Stapler.invoke(Stapler.java:777)
        at org.kohsuke.stapler.MetaClass$6.doDispatch(MetaClass.java:239)
        at org.kohsuke.stapler.NameBasedDispatcher.dispatch(NameBasedDispatcher.java:53)
        at org.kohsuke.stapler.Stapler.tryInvoke(Stapler.java:684)
        at org.kohsuke.stapler.Stapler.invoke(Stapler.java:777)
        at org.kohsuke.stapler.Stapler.invoke(Stapler.java:586)