I've been looking into this bug as part of my NM process.
As far as I can see, this package is abandoned upstream. Their webpage has a binary-only download link, and refers you to a non-existing SVN repository for the source. The wiki for the project refers to Dart2, which is a complete rewrite. I'm not sure if this package is Dart2 or Dart 1. On the mailing list for dart, the last few messages are from Jun 2008, recommending people to switch to CDash. CDash is alive and well, and a ITP (#536477) was filed this summer.
I was unable to get the current package to produce any testresults, and as the .jar files are used in the processing of results, it's hard to verify that a fix (if implemented) would work. Note that it's actually the client and not the server that uses the jar files, so the files probably should have been in dart-client instead.
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