java.util.ConcurrentModificationException
at java.util.AbstractList$Itr.checkForComodification(AbstractList.java:448)
at java.util.AbstractList$Itr.next(AbstractList.java:419)
at org.apache.maven.continuum.execution.maven.m1.DefaultMavenOneMetadataHelper.mapMetadata(DefaultMavenOneMetadataHelper.java:288)
at org.apache.maven.continuum.execution.maven.m1.MavenOneBuildExecutor.updateProjectFromCheckOut(MavenOneBuildExecutor.java:108)
at org.apache.maven.continuum.core.action.UpdateProjectFromWorkingDirectoryContinuumAction.execute(UpdateProjectFromWorkingDirectoryContinuumAction.java:62)
at org.apache.maven.continuum.buildcontroller.DefaultBuildController.build(DefaultBuildController.java:169)
at org.apache.maven.continuum.buildcontroller.BuildProjectTaskExecutor.executeTask(BuildProjectTaskExecutor.java:53)
at org.codehaus.plexus.taskqueue.execution.ThreadedTaskQueueExecutor$ExecutorRunnable.run(ThreadedTaskQueueExecutor.java:103)
at java.lang.Thread.run(Thread.java:534)