Tomcat returns 404 error if there is a # character in the name of testcase:
JUnit XML result:
testcase name="en.test#00-24" classname="en.test#00-24" time="0">
<failure message="AssertionFailedError: expected:8, but was:1"
type="AssertionFailedError"/>
</testcase>

The URL to test result in this case looks like
http://localhost:8080/hudson/job/my-
project/lastBuild/testReport/en.test/test#00-24/en_test_test_00_24