WARNING: Failed to load /var/lib/jenkins/github-plugin-configuration.xml
java.io.IOException: Unable to read /var/lib/jenkins/github-plugin-configuration.xml
        at hudson.XmlFile.unmarshal(XmlFile.java:165)
        at hudson.model.Descriptor.load(Descriptor.java:885)
        at org.jenkinsci.plugins.github.config.GitHubPluginConfig.<init>(GitHubPluginConfig.java:77)
        at org.jenkinsci.plugins.github.config.GitHubPluginConfig$$FastClassByGuice$$cfc1c5a3.newInstance(<generated>)
        at com.google.inject.internal.cglib.reflect.$FastConstructor.newInstance(FastConstructor.java:40)
        at com.google.inject.internal.DefaultConstructionProxyFactory$1.newInstance(DefaultConstructionProxyFactory.java:61)
        at com.google.inject.internal.ConstructorInjector.provision(ConstructorInjector.java:108)
        at com.google.inject.internal.ConstructorInjector.construct(ConstructorInjector.java:88)
        at com.google.inject.internal.ConstructorBindingImpl$Factory.get(ConstructorBindingImpl.java:269)
        at com.google.inject.internal.ProviderToInternalFactoryAdapter$1.call(ProviderToInternalFactoryAdapter.java:46)
        at com.google.inject.internal.InjectorImpl.callInContext(InjectorImpl.java:1058)
        at com.google.inject.internal.ProviderToInternalFactoryAdapter.get(ProviderToInternalFactoryAdapter.java:40)
        at com.google.inject.Scopes$1$1.get(Scopes.java:65)
        at hudson.ExtensionFinder$GuiceFinder$FaultTolerantScope$1.get(ExtensionFinder.java:424)
        at com.google.inject.internal.InternalFactoryToProviderAdapter.get(InternalFactoryToProviderAdapter.java:41)
        at com.google.inject.internal.InjectorImpl$3$1.call(InjectorImpl.java:1005)
        at com.google.inject.internal.InjectorImpl.callInContext(InjectorImpl.java:1051)
        at com.google.inject.internal.InjectorImpl$3.get(InjectorImpl.java:1001)
        at hudson.ExtensionFinder$GuiceFinder._find(ExtensionFinder.java:386)
        at hudson.ExtensionFinder$GuiceFinder.find(ExtensionFinder.java:377)
        at hudson.ClassicPluginStrategy.findComponents(ClassicPluginStrategy.java:478)
        at hudson.ExtensionList.load(ExtensionList.java:349)
        at hudson.ExtensionList.ensureLoaded(ExtensionList.java:287)
        at hudson.ExtensionList.iterator(ExtensionList.java:156)
        at jenkins.model.Jenkins.getDescriptorByType(Jenkins.java:1430)
        at hudson.plugins.copyartifact.BuildSelectorParameter.initAliases(BuildSelectorParameter.java:156)
        at hudson.plugins.copyartifact.CopyArtifactPlugin.postInitialize(CopyArtifactPlugin.java:35)
        at hudson.PluginManager$2$1$2.run(PluginManager.java:542)
        at org.jvnet.hudson.reactor.TaskGraphBuilder$TaskImpl.run(TaskGraphBuilder.java:169)
        at org.jvnet.hudson.reactor.Reactor.runTask(Reactor.java:282)
        at jenkins.model.Jenkins$7.runTask(Jenkins.java:1026)
        at org.jvnet.hudson.reactor.Reactor$2.run(Reactor.java:210)
        at org.jvnet.hudson.reactor.Reactor$Node.run(Reactor.java:117)
        at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1142)
        at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:617)
        at java.lang.Thread.run(Thread.java:745)
Caused by: com.thoughtworks.xstream.mapper.CannotResolveClassException: github-plugin-configuration
        at com.thoughtworks.xstream.mapper.DefaultMapper.realClass(DefaultMapper.java:79)
        at com.thoughtworks.xstream.mapper.MapperWrapper.realClass(MapperWrapper.java:30)
        at com.thoughtworks.xstream.mapper.DynamicProxyMapper.realClass(DynamicProxyMapper.java:55)
        at com.thoughtworks.xstream.mapper.MapperWrapper.realClass(MapperWrapper.java:30)
        at com.thoughtworks.xstream.mapper.PackageAliasingMapper.realClass(PackageAliasingMapper.java:88)
        at com.thoughtworks.xstream.mapper.MapperWrapper.realClass(MapperWrapper.java:30)
        at com.thoughtworks.xstream.mapper.ClassAliasingMapper.realClass(ClassAliasingMapper.java:79)
        at com.thoughtworks.xstream.mapper.MapperWrapper.realClass(MapperWrapper.java:30)
        at com.thoughtworks.xstream.mapper.MapperWrapper.realClass(MapperWrapper.java:30)
        at com.thoughtworks.xstream.mapper.MapperWrapper.realClass(MapperWrapper.java:30)
        at com.thoughtworks.xstream.mapper.MapperWrapper.realClass(MapperWrapper.java:30)
        at com.thoughtworks.xstream.mapper.MapperWrapper.realClass(MapperWrapper.java:30)
        at com.thoughtworks.xstream.mapper.MapperWrapper.realClass(MapperWrapper.java:30)
        at com.thoughtworks.xstream.mapper.ArrayMapper.realClass(ArrayMapper.java:74)
        at com.thoughtworks.xstream.mapper.MapperWrapper.realClass(MapperWrapper.java:30)
        at com.thoughtworks.xstream.mapper.MapperWrapper.realClass(MapperWrapper.java:30)
        at com.thoughtworks.xstream.mapper.MapperWrapper.realClass(MapperWrapper.java:30)
        at com.thoughtworks.xstream.mapper.MapperWrapper.realClass(MapperWrapper.java:30)
        at com.thoughtworks.xstream.mapper.MapperWrapper.realClass(MapperWrapper.java:30)
        at com.thoughtworks.xstream.mapper.MapperWrapper.realClass(MapperWrapper.java:30)
        at com.thoughtworks.xstream.mapper.SecurityMapper.realClass(SecurityMapper.java:71)
        at com.thoughtworks.xstream.mapper.MapperWrapper.realClass(MapperWrapper.java:30)
        at com.thoughtworks.xstream.mapper.MapperWrapper.realClass(MapperWrapper.java:30)
        at com.thoughtworks.xstream.mapper.MapperWrapper.realClass(MapperWrapper.java:30)
        at hudson.util.XStream2$CompatibilityMapper.realClass(XStream2.java:282)
        at com.thoughtworks.xstream.mapper.MapperWrapper.realClass(MapperWrapper.java:30)
        at hudson.util.xstream.MapperDelegate.realClass(MapperDelegate.java:43)
        at com.thoughtworks.xstream.mapper.MapperWrapper.realClass(MapperWrapper.java:30)
        at com.thoughtworks.xstream.mapper.CachingMapper.realClass(CachingMapper.java:48)
        at com.thoughtworks.xstream.core.util.HierarchicalStreams.readClassType(HierarchicalStreams.java:29)
        at com.thoughtworks.xstream.core.TreeUnmarshaller.start(TreeUnmarshaller.java:133)
        at com.thoughtworks.xstream.core.AbstractTreeMarshallingStrategy.unmarshal(AbstractTreeMarshallingStrategy.java:32)
        at com.thoughtworks.xstream.XStream.unmarshal(XStream.java:1189)
        at hudson.util.XStream2.unmarshal(XStream2.java:114)
        at com.thoughtworks.xstream.XStream.unmarshal(XStream.java:1173)
        at hudson.XmlFile.unmarshal(XmlFile.java:163)
        ... 35 more