groovy indy jar causes lots of warnings in JBoss EAP 6 when deployed

Issue

We are seeing a lot of warnings with we deploy the groovy indy jar, groovy-all-2.2.1-indy.jar, in our application, such as:

09:22:27,162 WARN  [org.jboss.as.server.deployment] (MSC service thread 1-12) JBAS015852: Could not index class groovy/ui/Console$_compileScript_closure18_closure36.class at /content/helloWorld.war/WEB-INF/lib/groovy-all-2.2.1-indy.jar: java.lang.IllegalStateException: Unknown tag! pos=39 poolCount = 113
  at org.jboss.jandex.Indexer.processConstantPool(Indexer.java:606) [jandex-1.0.3.Final-redhat-2.jar:1.0.3.Final-redhat-2]
  at org.jboss.jandex.Indexer.index(Indexer.java:640) [jandex-1.0.3.Final-redhat-2.jar:1.0.3.Final-redhat-2]
  at org.jboss.as.server.deployment.annotation.ResourceRootIndexer.indexResourceRoot(ResourceRootIndexer.java:100) [jboss-as-server-7.3.0.Final-redhat-14.jar:7.3.0.Final-redhat-14]
  at org.jboss.as.server.deployment.annotation.AnnotationIndexProcessor.deploy(AnnotationIndexProcessor.java:51) [jboss-as-server-7.3.0.Final-redhat-14.jar:7.3.0.Final-redhat-14]
  at org.jboss.as.server.deployment.DeploymentUnitPhaseService.start(DeploymentUnitPhaseService.java:120) [jboss-as-server-7.3.0.Final-redhat-14.jar:7.3.0.Final-redhat-14]
  at org.jboss.msc.service.ServiceControllerImpl$StartTask.startService(ServiceControllerImpl.java:1811) [jboss-msc-1.0.4.GA-redhat-1.jar:1.0.4.GA-redhat-1]
  at org.jboss.msc.service.ServiceControllerImpl$StartTask.run(ServiceControllerImpl.java:1746) [jboss-msc-1.0.4.GA-redhat-1.jar:1.0.4.GA-redhat-1]
  at java.util.concurrent.ThreadPoolExecutor$Worker.runTask(ThreadPoolExecutor.java:895) [rt.jar:1.6.0_45]
  at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:918) [rt.jar:1.6.0_45]
  at java.lang.Thread.run(Thread.java:662) [rt.jar:1.6.0_45]