Build hangs on Running org.onehippo.cms7.channelmanager.templatecomposer.iframe.InitializationTest

Building the channel-manager hangs, last output is for the InitializationTest.
Running with the CMS dependency from iteration-12 and the test passes.
Output differs from successful previous build showing some jquery errors

unning org.onehippo.cms7.channelmanager.ExtTest
17.03.2014 11:00:14 INFO [org.mortbay.log.Slf4jLog.info():67] Logging to org.slf4j.impl.Log4jLoggerAdapter(org.mortbay.log) via org.mortbay.log.Slf4jLog
17.03.2014 11:00:14 INFO [org.mortbay.log.Slf4jLog.info():67] jetty-6.1.22
17.03.2014 11:00:14 INFO [org.mortbay.log.Slf4jLog.info():67] Started SelectChannelConnector@localhost:8888
17.03.2014 11:00:14 DEBUG [org.onehippo.cms7.channelmanager.ResourceServlet.doGet():102] Processing request for resource /org/apache/wicket/resource/jquery/jquery.js
17.03.2014 11:00:14 DEBUG [org.onehippo.cms7.channelmanager.ResourceServlet.getJarResource():188] Searching classpath for resource: org/apache/wicket/resource/jquery/jquery.js
17.03.2014 11:00:14 DEBUG [org.onehippo.cms7.channelmanager.ResourceServlet.doGet():109] Resource not found: /org/apache/wicket/resource/jquery/jquery.js
17.03.2014 11:00:14 ERROR [com.gargoylesoftware.htmlunit.html.HtmlPage.loadExternalJavaScriptFile():961] Error loading JavaScript from http://localhost:8888/resources/org/apache/wicket/resource/jquery/jquery.js.
com.gargoylesoftware.htmlunit.FailingHttpStatusCodeException: 404 Not Found for http://localhost:8888/resources/org/apache/wicket/resource/jquery/jquery.js
at com.gargoylesoftware.htmlunit.WebClient.throwFailingHttpStatusCodeExceptionIfNecessary(WebClient.java:535)

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Running org.onehippo.cms7.channelmanager.templatecomposer.iframe.InitializationTest
17.03.2014 09:59:50 INFO [org.mortbay.log.Slf4jLog.info():67] Logging to org.slf4j.impl.Log4jLoggerAdapter(org.mortbay.log) via org.mortbay.log.Slf4jLog
17.03.2014 09:59:50 INFO [org.mortbay.log.Slf4jLog.info():67] jetty-6.1.22
17.03.2014 09:59:50 INFO [org.mortbay.log.Slf4jLog.info():67] Started SelectChannelConnector@localhost:8888
17.03.2014 10:00:00 ERROR [com.gargoylesoftware.htmlunit.html.DomNode.querySelectorAll():1528] Error parsing CSS selectors from '[t^='']': Error in attribute selector. Invalid token "^". Was expecting one of: <S>, "=", "]", "~=", "|=".
com.steadystate.css.sac.TestCSSParseException: Error in attribute selector. Invalid token "^". Was expecting one of: <S>, "=", "]", "~=", "|=".