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java.util.ConcurrentModificationException: 	at java.util.HashMap$HashIterator.nextNode(HashMap.java:1437)	at java.util.HashMap$EntryIterator.next(HashMap.java:1471)	at java.util.HashMap$EntryIterator.next(HashMap.java:1469)	at com.atlassian.bamboo.utils.ConfigUtils.addMapToConfiguration(ConfigUtils.java:135)	at com.atlassian.bamboo.fieldvalue.TaskConfigurationUtils.addTaskDefinitionsToConfig(TaskConfigurationUtils.java:90)	at com.atlassian.bamboo.fieldvalue.BuildDefinitionConverter.fromObject(BuildDefinitionConverter.java:91)	at com.atlassian.bamboo.serialization.xstream.BuildDefinitionXStreamConverter.marshal(BuildDefinitionXStreamConverter.java:48)	at com.thoughtworks.xstream.core.AbstractReferenceMarshaller.convert(AbstractReferenceMarshaller.java:69)	at com.thoughtworks.xstream.core.TreeMarshaller.convertAnother(TreeMarshaller.java:58)	at com.thoughtworks.xstream.core.AbstractReferenceMarshaller$1.convertAnother(AbstractReferenceMarshaller.java:84)	at com.thoughtworks.xstream.converters.reflection.AbstractReflectionConverter.marshallField(AbstractReflectionConverter.java:274)	at com.thoughtworks.xstream.converters.reflection.AbstractReflectionConverter$2.writeField(AbstractReflectionConverter.java:250)	at com.thoughtworks.xstream.converters.reflection.AbstractReflectionConverter$2.(AbstractReflectionConverter.java:213)	at com.thoughtworks.xstream.converters.reflection.AbstractReflectionConverter.doMarshal(AbstractReflectionConverter.java:144)	at com.thoughtworks.xstream.converters.reflection.AbstractReflectionConverter.marshal(AbstractReflectionConverter.java:90)	at com.atlassian.bamboo.serialization.xstream.BuildContextXStreamConverter.marshal(BuildContextXStreamConverter.java:46)	at com.thoughtworks.xstream.core.AbstractReferenceMarshaller.convert(AbstractReferenceMarshaller.java:69)	at com.thoughtworks.xstream.core.TreeMarshaller.convertAnother(TreeMarshaller.java:58)	at com.thoughtworks.xstream.core.TreeMarshaller.convertAnother(TreeMarshaller.java:43)	at com.thoughtworks.xstream.core.TreeMarshaller.start(TreeMarshaller.java:82)	at com.thoughtworks.xstream.core.AbstractTreeMarshallingStrategy.marshal(AbstractTreeMarshallingStrategy.java:37)	at com.thoughtworks.xstream.XStream.marshal(XStream.java:1067)	at com.thoughtworks.xstream.XStream.marshal(XStream.java:1056)	at com.thoughtworks.xstream.XStream.toXML(XStream.java:1029)	at com.atlassian.bamboo.v2.build.queue.queues.XStreamQueuePersisterImpl.save(XStreamQueuePersisterImpl.java:54)	at com.atlassian.bamboo.v2.build.queue.queues.CommonContextMaps$ForwardingOffloadingCommonContextMap.put(CommonContextMaps.java:144)	at com.atlassian.bamboo.v2.build.queue.queues.AbstractQueueOfExecutables.enqueue(AbstractQueueOfExecutables.java:105)	at com.atlassian.bamboo.v2.build.queue.BuildQueueManagerImpl$2.doInTransactionWithoutResult(BuildQueueManagerImpl.java:183)	at org.springframework.transaction.support.TransactionCallbackWithoutResult.doInTransaction(TransactionCallbackWithoutResult.java:34)	at org.springframework.transaction.support.TransactionTemplate.execute(TransactionTemplate.java:133)	at com.atlassian.bamboo.v2.build.queue.BuildQueueManagerImpl.addToQueue(BuildQueueManagerImpl.java:175)	at com.atlassian.bamboo.v2.build.queue.BuildTriggeredListener.handleEvent(BuildTriggeredListener.java:33)	at sun.reflect.GeneratedMethodAccessor2355.invoke(Unknown Source)	at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)	at java.lang.reflect.Method.invoke(Method.java:498)	at com.atlassian.event.internal.SingleParameterMethodListenerInvoker.invoke(SingleParameterMethodListenerInvoker.java:36)	at com.atlassian.event.internal.AsynchronousAbleEventDispatcher$1$1.run(AsynchronousAbleEventDispatcher.java:46)	at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1142)	at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:617)	at com.atlassian.bamboo.utils.BambooRunnables$1.run(BambooRunnables.java:51)	at com.atlassian.bamboo.security.ImpersonationHelper.runWith(ImpersonationHelper.java:31)	at com.atlassian.bamboo.security.ImpersonationHelper.runWithSystemAuthority(ImpersonationHelper.java:20)	at com.atlassian.bamboo.security.ImpersonationHelper$1.run(ImpersonationHelper.java:52)	at java.lang.Thread.run(Thread.java:745)