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java.lang.ClassCastException: hudson.ClassicPluginStrategy$AntClassLoader2 incompatible with java.net.URLClassLoader	at com.ibm.team.build.internal.hjplugin.RTCFacadeFactory.newFacade(RTCFacadeFactory.java:160)	at com.ibm.team.build.internal.hjplugin.RTCFacadeFactory.getFacade(RTCFacadeFactory.java:67)	at com.ibm.team.build.internal.hjplugin.RTCScm.checkout(RTCScm.java:727)	at hudson.model.AbstractProject.checkout(AbstractProject.java:1408)	at hudson.model.AbstractBuild$AbstractBuildExecution.defaultCheckout(AbstractBuild.java:676)	at jenkins.scm.SCMCheckoutStrategy.checkout(SCMCheckoutStrategy.java:88)	at hudson.model.AbstractBuild$AbstractBuildExecution.run(AbstractBuild.java:581)	at hudson.model.Run.execute(Run.java:1603)	at hudson.maven.MavenModuleSetBuild.run(MavenModuleSetBuild.java:506)	at hudson.model.ResourceController.execute(ResourceController.java:88)	at hudson.model.Executor.run(Executor.java:247)