ServerSideScriptsTest / installer-duplicate.jsp integration test fails

This test consistently fails at
https://builds.apache.org/view/S-Z/view/Sling/job/sling-trunk-1.6

[verifyContent[0](org.apache.sling.junit.scriptable.TestAllPaths): Unexpected content at path /apps/testing/sling/scripted-tests/installer-duplicate.test.txt, should be just TEST_PASSED (lines starting with # and empty lines are ignored)
content was:
Active resources: [group[[resource[entityId=bundle:org.apache.felix.http.whiteboard, scheme=launchpad, url=launchpad:file:/home/jenkins/jenkins-slave/maven-repositories/0/org/apache/felix/org.apache.felix.http.whiteboard/2.3.2/org.apache.felix.http.whiteboard-2.3.2.jar, type=bundle, state=INSTALL, version=2.3.2, lastChange=-1, priority=50, digest=1418650455000]]]]