...	SEVERE	jenkins.InitReactorRunner$1#onTaskFailed: Failed Discovering plugin initialization tasks
java.lang.NoClassDefFoundError: hudson/maven/MavenBuild
	at java.lang.Class.getDeclaredMethods0(Native Method)
	at java.lang.Class.privateGetDeclaredMethods(Class.java:2451)
	at java.lang.Class.getDeclaredMethods(Class.java:1810)
	at org.jvnet.hudson.annotation_indexer.Index$2$1.fetch(Index.java:101)
	at org.jvnet.hudson.annotation_indexer.Index$2$1.hasNext(Index.java:71)
	at org.jvnet.hudson.annotation_indexer.FilterIterator.fetch(FilterIterator.java:23)
	at org.jvnet.hudson.annotation_indexer.FilterIterator.hasNext(FilterIterator.java:42)
	at hudson.init.InitializerFinder.discoverTasks(InitializerFinder.java:70)
	at hudson.PluginManager$2$1$3.run(PluginManager.java:367)
	at org.jvnet.hudson.reactor.TaskGraphBuilder$TaskImpl.run(TaskGraphBuilder.java:146)
	at org.jvnet.hudson.reactor.Reactor.runTask(Reactor.java:259)
	at jenkins.model.Jenkins$7.runTask(Jenkins.java:888)
	at org.jvnet.hudson.reactor.Reactor$2.run(Reactor.java:187)
	at org.jvnet.hudson.reactor.Reactor$Node.run(Reactor.java:94)
	at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1145)
	at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:615)
	at java.lang.Thread.run(Thread.java:722)
Caused by: java.lang.ClassNotFoundException: hudson.maven.MavenBuild
	at java.net.URLClassLoader$1.run(URLClassLoader.java:366)
	at java.net.URLClassLoader$1.run(URLClassLoader.java:355)
	at java.security.AccessController.doPrivileged(Native Method)
	at java.net.URLClassLoader.findClass(URLClassLoader.java:354)
	at java.lang.ClassLoader.loadClass(ClassLoader.java:423)
	at java.lang.ClassLoader.loadClass(ClassLoader.java:356)
	... 17 more
...	SEVERE	hudson.WebAppMain$2#run: Failed to initialize Jenkins
org.jvnet.hudson.reactor.ReactorException: java.lang.NoClassDefFoundError: hudson/maven/MavenBuild
	at org.jvnet.hudson.reactor.Reactor.execute(Reactor.java:246)
	at jenkins.InitReactorRunner.run(InitReactorRunner.java:43)
	at jenkins.model.Jenkins.executeReactor(Jenkins.java:899)
	at jenkins.model.Jenkins.<init>(Jenkins.java:801)
	at hudson.model.Hudson.<init>(Hudson.java:81)
	at hudson.model.Hudson.<init>(Hudson.java:77)
	at hudson.WebAppMain$2.run(WebAppMain.java:214)
Caused by: java.lang.NoClassDefFoundError: hudson/maven/MavenBuild
	at java.lang.Class.getDeclaredMethods0(Native Method)
	at java.lang.Class.privateGetDeclaredMethods(Class.java:2451)
	at java.lang.Class.getDeclaredMethods(Class.java:1810)
	at org.jvnet.hudson.annotation_indexer.Index$2$1.fetch(Index.java:101)
	at org.jvnet.hudson.annotation_indexer.Index$2$1.hasNext(Index.java:71)
	at org.jvnet.hudson.annotation_indexer.FilterIterator.fetch(FilterIterator.java:23)
	at org.jvnet.hudson.annotation_indexer.FilterIterator.hasNext(FilterIterator.java:42)
	at hudson.init.InitializerFinder.discoverTasks(InitializerFinder.java:70)
	at hudson.PluginManager$2$1$3.run(PluginManager.java:367)
	at org.jvnet.hudson.reactor.TaskGraphBuilder$TaskImpl.run(TaskGraphBuilder.java:146)
	at org.jvnet.hudson.reactor.Reactor.runTask(Reactor.java:259)
	at jenkins.model.Jenkins$7.runTask(Jenkins.java:888)
	at org.jvnet.hudson.reactor.Reactor$2.run(Reactor.java:187)
	at org.jvnet.hudson.reactor.Reactor$Node.run(Reactor.java:94)
	at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1145)
	at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:615)
	at java.lang.Thread.run(Thread.java:722)
Caused by: java.lang.ClassNotFoundException: hudson.maven.MavenBuild
	at java.net.URLClassLoader$1.run(URLClassLoader.java:366)
	at java.net.URLClassLoader$1.run(URLClassLoader.java:355)
	at java.security.AccessController.doPrivileged(Native Method)
	at java.net.URLClassLoader.findClass(URLClassLoader.java:354)
	at java.lang.ClassLoader.loadClass(ClassLoader.java:423)
	at java.lang.ClassLoader.loadClass(ClassLoader.java:356)
	... 17 more