caffeine having ConcurrentModificationException

[jvalkeal]

I have had this running few hours now, below have happened 3 times.

2017-04-06 16:36:44.266  WARN 17502 --- [onPool-worker-2] c.g.b.caffeine.cache.BoundedLocalCache   : Exception thrown by removal listener

java.util.ConcurrentModificationException: null
	at java.util.LinkedList$ListItr.checkForComodification(LinkedList.java:966) ~[na:1.8.0_111]
	at java.util.LinkedList$ListItr.next(LinkedList.java:888) ~[na:1.8.0_111]
	at org.springframework.cloud.stream.app.metrics.collector.support.CacheRemovalListener.onRemoval(CacheRemovalListener.java:52) ~[spring-cloud-starter-stream-collector-metrics-1.0.0.BUILD-SNAPSHOT.jar!/:1.0.0.BUILD-SNAPSHOT]
	at org.springframework.cloud.stream.app.metrics.collector.support.CacheRemovalListener.onRemoval(CacheRemovalListener.java:36) ~[spring-cloud-starter-stream-collector-metrics-1.0.0.BUILD-SNAPSHOT.jar!/:1.0.0.BUILD-SNAPSHOT]
	at com.github.benmanes.caffeine.cache.BoundedLocalCache.lambda$notifyRemoval$1(BoundedLocalCache.java:286) ~[caffeine-2.3.5.jar!/:na]
	at java.util.concurrent.ForkJoinTask$RunnableExecuteAction.exec(ForkJoinTask.java:1402) ~[na:1.8.0_111]
	at java.util.concurrent.ForkJoinTask.doExec(ForkJoinTask.java:289) ~[na:1.8.0_111]
	at java.util.concurrent.ForkJoinPool$WorkQueue.runTask(ForkJoinPool.java:1056) ~[na:1.8.0_111]
	at java.util.concurrent.ForkJoinPool.runWorker(ForkJoinPool.java:1692) ~[na:1.8.0_111]
	at java.util.concurrent.ForkJoinWorkerThread.run(ForkJoinWorkerThread.java:157) ~[na:1.8.0_111]