The XPathOrderByTest test methods are all failing during the Hudson API compatibility run, but they pass when running this same API compatibility run locally and during the regular test runs on Hudson (http://hudson.jboss.org/hudson/job/ModeShape%20continuous/org.modeshape$modeshape-jcr/1053/testReport/org.modeshape.jcr/JcrTckTest/)

Here is one example of an error:

junit.framework.AssertionFailedError: Workspace does not contain sufficient content to test ordering on result nodes.
at junit.framework.Assert.fail(Assert.java:47)
at org.apache.jackrabbit.test.api.query.AbstractQueryTest.evaluateResultOrder(AbstractQueryTest.java:217)
at org.apache.jackrabbit.test.api.query.XPathOrderByTest.testOrderBy(XPathOrderByTest.java:83)
at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:39)
at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:25)

This sounds like it's grabbing the wrong repositoryStubImpl.properties file.

Here's the internal link: http://hudson.qa.jboss.com/hudson/view/ModeShape/job/ModeShape%20API%20compatibility/252/#showFailuresLink
The public report doesn't appear to have copied yet.