Hi I got frustrated that usinge jruby there were a lot of rake target not working in my buildr checkout.
Therefore I invested some time to fix the problem. Please look at my patch under https://github.com/apache/buildr/pull/5 Also I did set up some CI builds on my jenkins, where you can see the results without my patch under http://ngiger.dyndns.org/jenkins/job/buildr-matrix/ and from my fork under http://ngiger.dyndns.org/jenkins/job/buildr-matrix- ngiger/ The RSpec results are not too bad. Usually just 3 or 4 failures of over 2200 examples, e.g. http://ngiger.dyndns.org/jenkins/job/buildr-matrix- ngiger/Rake_Target=spec,rubies=ruby-1.9.2-p320/ws/_reports/specs.html The Jenkins build for buildr.apache.org at https://builds.apache.org/ seem a bit outdated, and I think a matrix based build as in my example is quite nice to read and could be an inspiration to update the buildr at https://builds.apache.org/ My Matrix build misses tests on different platforms, mainly because I don't have enough CPUs/RAM to run the tests also under Windows and MacOSX. Regards Niklaus