src/tomcat6/test/build.xml is broken. It tries to compile and execute org.apache.catalina.tomcat.util.http.TestCookies where there is available only org.apache.tomcat.util.http.TestCookies
There are two places that needs fixing - in the "compile" and in the "all" targets. Test passes after the simple fix.
It is a bug in the upstream 6.0.24 also so obviously upstream is released without running this test.
This issue is not present in the EWS 1.0.0 sources.