Race condition in ManagedBeanTestCase

13:59:08,662 ERROR [org.jboss.msc.service.fail] (MSC service thread 1-15) MSC00001: Failed to start service jboss.deployment.subunit."managedbean-example.ear"."managedbean-example.jar".POST_MODULE: org.jboss.msc.service.StartException in service jboss.deployment.subunit."managedbean-example.ear"."managedbean-example.jar".POST_MODULE: Failed to process phase POST_MODULE of subdeployment "managedbean-example.jar" of deployment "managedbean-example.ear"
        at org.jboss.as.server.deployment.DeploymentUnitPhaseService.start(DeploymentUnitPhaseService.java:108) [jboss-as-server-7.0.0.Beta3-SNAPSHOT.jar:7.0.0.Beta3-SNAPSHOT]
        at org.jboss.msc.service.ServiceControllerImpl$StartTask.run(ServiceControllerImpl.java:1675) [jboss-msc-1.0.0.Beta8.jar:1.0.0.Beta8]
        at java.util.concurrent.ThreadPoolExecutor$Worker.runTask(ThreadPoolExecutor.java:886) [:1.6.0_24]
        at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:908) [:1.6.0_24]
        at java.lang.Thread.run(Thread.java:662) [:1.6.0_24]
Caused by: java.lang.NullPointerException
        at org.jboss.as.weld.deployment.processors.BeanArchiveProcessor.deploy(BeanArchiveProcessor.java:87)
        at org.jboss.as.server.deployment.DeploymentUnitPhaseService.start(DeploymentUnitPhaseService.java:102) [jboss-as-server-7.0.0.Beta3-SNAPSHOT.jar:7.0.0.Beta3-SNAPSHOT]
        ... 4 more