java.lang.LinkageError: hudson/tasks/test/TestResultProjectAction
 at org.jenkinsci.plugins.xunit.XUnitPublisher.getProjectAction(XUnitPublisher.java:195)
 at hudson.tasks.BuildStepCompatibilityLayer.getProjectActions(BuildStepCompatibilityLayer.java:103)
 at hudson.maven.MavenModuleSet.createTransientActions(MavenModuleSet.java:485)
 at hudson.model.AbstractProject.updateTransientActions(AbstractProject.java:726)
 at hudson.maven.MavenModuleSet.updateTransientActions(MavenModuleSet.java:472)
 at hudson.model.AbstractProject.onLoad(AbstractProject.java:322)
 at hudson.maven.MavenModuleSet.onLoad(MavenModuleSet.java:810)
 at hudson.model.Items.load(Items.java:376)
 at jenkins.model.Jenkins$13.run(Jenkins.java:3276)
 at org.jvnet.hudson.reactor.TaskGraphBuilder$TaskImpl.run(TaskGraphBuilder.java:169)
 at org.jvnet.hudson.reactor.Reactor.runTask(Reactor.java:296)
 at jenkins.model.Jenkins$5.runTask(Jenkins.java:1130)
 at org.jvnet.hudson.reactor.Reactor$2.run(Reactor.java:214)
 at org.jvnet.hudson.reactor.Reactor$Node.run(Reactor.java:117)
 at jenkins.security.ImpersonatingExecutorService$1.run(ImpersonatingExecutorService.java:68)
 at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1149)
 at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:624)
 at java.lang.Thread.run(Thread.java:748)

java.lang.LinkageError: loader (instance of  hudson/ClassicPluginStrategy$AntClassLoader2): attempted  duplicate class definition for name: "hudson/tasks/test/TestResultProjectAction" at java.lang.ClassLoader.defineClass1(Native Method)
 at java.lang.ClassLoader.defineClass(ClassLoader.java:763)
 at jenkins.util.AntClassLoader.defineClassFromData(AntClassLoader.java:1155)
 at hudson.ClassicPluginStrategy$AntClassLoader2.defineClassFromData(ClassicPluginStrategy.java:717)
 at jenkins.util.AntClassLoader.getClassFromStream(AntClassLoader.java:1326)
 at jenkins.util.AntClassLoader.findClassInComponents(AntClassLoader.java:1377)
 at jenkins.util.AntClassLoader.findClass(AntClassLoader.java:1342)
 at jenkins.ClassLoaderReflectionToolkit._findClass(ClassLoaderReflectionToolkit.java:107)
 at hudson.ClassicPluginStrategy$DependencyClassLoader.findClass(ClassicPluginStrategy.java:636)
 at java.lang.ClassLoader.loadClass(ClassLoader.java:424)
 at java.lang.ClassLoader.loadClass(ClassLoader.java:357)
 at jenkins.util.AntClassLoader.findBaseClass(AntClassLoader.java:1406)
 at jenkins.util.AntClassLoader.loadClass(AntClassLoader.java:1085)
 at java.lang.ClassLoader.loadClass(ClassLoader.java:357)
 at org.jenkinsci.plugins.xunit.XUnitPublisher.getProjectAction(XUnitPublisher.java:195)
 at hudson.tasks.BuildStepCompatibilityLayer.getProjectActions(BuildStepCompatibilityLayer.java:103)
 at hudson.matrix.MatrixProject.createTransientActions(MatrixProject.java:460)
 at hudson.model.AbstractProject.updateTransientActions(AbstractProject.java:726)
 at hudson.matrix.MatrixProject.updateTransientActions(MatrixProject.java:471)
 at hudson.model.AbstractProject.onLoad(AbstractProject.java:322)
 at hudson.matrix.MatrixProject.onLoad(MatrixProject.java:512)
 at hudson.model.Items.load(Items.java:376)
 at jenkins.model.Jenkins$13.run(Jenkins.java:3276)
 at org.jvnet.hudson.reactor.TaskGraphBuilder$TaskImpl.run(TaskGraphBuilder.java:169)
 at org.jvnet.hudson.reactor.Reactor.runTask(Reactor.java:296)
 at jenkins.model.Jenkins$5.runTask(Jenkins.java:1130)
 at org.jvnet.hudson.reactor.Reactor$2.run(Reactor.java:214)
 at org.jvnet.hudson.reactor.Reactor$Node.run(Reactor.java:117)
 at jenkins.security.ImpersonatingExecutorService$1.run(ImpersonatingExecutorService.java:68)
 at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1149)
 at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:624)
 at java.lang.Thread.run(Thread.java:748)