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Classloading from system classloader disabled
java.lang.ClassNotFoundException: Classloading from system classloader disabled	at hudson.remoting.RemoteClassLoader$ClassLoaderProxy.fetch4(RemoteClassLoader.java:770)	at hudson.remoting.RemoteClassLoader$ClassLoaderProxy.fetch3(RemoteClassLoader.java:803)	at sun.reflect.GeneratedMethodAccessor73.invoke(Unknown Source)	at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:56)	at java.lang.reflect.Method.invoke(Method.java:620)	at hudson.remoting.RemoteInvocationHandler$RPCRequest.perform(RemoteInvocationHandler.java:884)	at hudson.remoting.Request$2.run(Request.java:332)	at hudson.remoting.InterceptingExecutorService$1.call(InterceptingExecutorService.java:68)	at org.jenkinsci.remoting.CallableDecorator.call(CallableDecorator.java:18)	at hudson.remoting.CallableDecoratorList$1.call(CallableDecoratorList.java:21)	at jenkins.util.ContextResettingExecutorService$2.call(ContextResettingExecutorService.java:46)	at java.util.concurrent.FutureTask.run(FutureTask.java:274)	at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1157)	at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:627)	at java.lang.Thread.run(Thread.java:809)