This should be on CPAN as an applicaton. I think you know how to do it. :)
Update (an aside): Before discovering http://analysis.cpantesters.org I wrote a little script that processed the tester's JSON dump, pulled in the text of the actual individual reports, and filled in a bunch of fields in an SQLite database, one row per report. Then I could SELECT ..... WHERE and find similarities across multiple failures. But it was really a one-off script: I was working on one particular module at the time, and soon discovered the analysis report that was more thorough and more useful. ...can't seem to find it now.