See JENKINS-5649 for details.
The attached file have been tested with the plugin JUnit Attachment with some fixes.
Test Failure Claim Link not present for Maven test results
Attachments are not collected for Maven2 jobs
(assigned to maven2 component)
Creating a pull request on Github would probably give you a better chance of getting this integrated soon.
or at least a patch diff
I have review your .java file.
It's difficult to review changes as it contains a lot of reformating
I just created a pull request https://github.com/jenkinsci/jenkins/pull/574 with Sebastien's changes.
Hope they'll get pulled in.
I'm also affected by this bug in JUnit Expected Diff Plugin (https://github.com/usultis/junit-expected-diff-plugin). With provided patch it works ok.
I think this was fixed in JENKINS-14585.
If not, please reopen