java.lang.IllegalArgumentException: duplicate key: jenkins/label
	at com.google.common.base.Preconditions.checkArgument(Preconditions.java:115)
	at com.google.common.collect.RegularImmutableMap.<init>(RegularImmutableMap.java:72)
	at com.google.common.collect.ImmutableMap$Builder.fromEntryList(ImmutableMap.java:245)
	at com.google.common.collect.ImmutableMap$Builder.build(ImmutableMap.java:231)
	at org.csanchez.jenkins.plugins.kubernetes.PodTemplate.getLabelsMap(PodTemplate.java:387)
	at org.csanchez.jenkins.plugins.kubernetes.KubernetesCloud.addProvisionedSlave(KubernetesCloud.java:599)
	at org.csanchez.jenkins.plugins.kubernetes.KubernetesCloud.provision(KubernetesCloud.java:542)
	at hudson.slaves.NodeProvisioner$StandardStrategyImpl.apply(NodeProvisioner.java:729)
	at hudson.slaves.NodeProvisioner.update(NodeProvisioner.java:334)
	at hudson.slaves.NodeProvisioner.access$900(NodeProvisioner.java:64)
	at hudson.slaves.NodeProvisioner$NodeProvisionerInvoker.doRun(NodeProvisioner.java:823)
	at hudson.triggers.SafeTimerTask.run(SafeTimerTask.java:70)
	at jenkins.security.ImpersonatingScheduledExecutorService$1.run(ImpersonatingScheduledExecutorService.java:58)
	at java.util.concurrent.Executors$RunnableAdapter.call(Executors.java:511)
	at java.util.concurrent.FutureTask.runAndReset(FutureTask.java:308)
	at java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.access$301(ScheduledThreadPoolExecutor.java:180)
	at java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.run(ScheduledThreadPoolExecutor.java:294)
	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)