Mail Queue Service fails to start

2016-09-03 07:50:00,069 Caesium-1-1 ERROR anonymous    Mail Queue Service [c.a.jira.service.ServiceRunner] An error occurred while trying to run service 'Mail Queue Service'. Caesium-1-1 WorkContext has been severed: WorkContext{instanceId=6214}
com.atlassian.workcontext.exception.WorkContextSeveredException: Caesium-1-1 WorkContext has been severed: WorkContext{instanceId=6214}
     	at com.atlassian.workcontext.api.PrivateWorkContext.lambda$getLocalMap$0(PrivateWorkContext.java:143)
     	at java.util.Optional.orElseThrow(Optional.java:290)
     	at com.atlassian.workcontext.api.PrivateWorkContext.getLocalMap(PrivateWorkContext.java:143)
     	at com.atlassian.workcontext.api.PrivateWorkContext.setLocal(PrivateWorkContext.java:151)
     	at com.atlassian.workcontext.api.WorkContextLocal.set(WorkContextLocal.java:83)
     	at com.atlassian.jira.security.JiraAuthenticationContextImpl.clearRequestCache(JiraAuthenticationContextImpl.java:58)
     	at com.atlassian.jira.util.thread.JiraThreadLocalUtils.preCall(JiraThreadLocalUtils.java:71)
     	at com.atlassian.jira.service.JiraServiceContainerImpl.run(JiraServiceContainerImpl.java:59)
     	at com.atlassian.jira.service.ServiceRunner.runService(ServiceRunner.java:63)
     	at com.atlassian.jira.service.ServiceRunner.runServiceId(ServiceRunner.java:44)
     	at com.atlassian.jira.service.ServiceRunner.runJob(ServiceRunner.java:32)
     	at com.atlassian.scheduler.core.JobLauncher.runJob(JobLauncher.java:153)
     	at com.atlassian.scheduler.core.JobLauncher.launchAndBuildResponse(JobLauncher.java:118)
     	at com.atlassian.scheduler.core.JobLauncher.launch(JobLauncher.java:97)
     	at com.atlassian.scheduler.caesium.impl.CaesiumSchedulerService.launchJob(CaesiumSchedulerService.java:443)
     	at com.atlassian.scheduler.caesium.impl.CaesiumSchedulerService.executeLocalJob(CaesiumSchedulerService.java:410)
     	at com.atlassian.scheduler.caesium.impl.CaesiumSchedulerService.executeQueuedJob(CaesiumSchedulerService.java:388)
     	at com.atlassian.scheduler.caesium.impl.CaesiumSchedulerService$1.consume(CaesiumSchedulerService.java:285)
     	at com.atlassian.scheduler.caesium.impl.CaesiumSchedulerService$1.consume(CaesiumSchedulerService.java:282)
     	at com.atlassian.scheduler.caesium.impl.SchedulerQueueWorker.executeJob(SchedulerQueueWorker.java:65)
     	at com.atlassian.scheduler.caesium.impl.SchedulerQueueWorker.executeNextJob(SchedulerQueueWorker.java:59)
     	at com.atlassian.scheduler.caesium.impl.SchedulerQueueWorker.run(SchedulerQueueWorker.java:34)
     	at java.lang.Thread.run(Thread.java:745)