When running ./karaf on controller from built from master (build Finished at: 2015-04-17T04:09:59-04:00), an exception is thrown:

Error installing bundle listed in startup.properties with url: wrap:mvn:javax.servlet.jsp/jsp-api/2.1 and startlevel: 30
Exception in thread "main" java.lang.NullPointerException
at org.apache.karaf.main.Main.destroy(Main.java:525)
at org.apache.karaf.main.Main.main(Main.java:173)