Aha, you caught me:
[WARNING] Rule 0: org.apache.maven.plugin.enforcer.BannedDependencies failed with message: Found Banned Dependency: org.jboss.microcontainer:jboss-container:jar:2.0.0.Beta10
$ mvn dependency:tree -Dincludes=org.jboss.microcontainer:jboss-container [INFO] [dependency:tree] [INFO] org.jboss.ejb3:jboss-ejb3-core:jar:0.1.2-SNAPSHOT [INFO] \- org.jboss.ejb3:jboss-ejb3-common:jar:0.1.1-SNAPSHOT:compile [INFO] \- org.jboss.microcontainer:jboss-managed:jar:2.0.0.Beta10:compile [INFO] \- org.jboss.microcontainer:jboss-container:jar:2.0.0.Beta10:compile