debug logging for Travis builds
debug logging for Travis builds

aglne/lenskit,martinlaz/lenskit,tajinder-txstate/lenskit,linjunleo/lenskit,martinlaz/lenskit,vaibhav345/lenskit,chrysalag/lenskit,kluver/lenskit,linjunleo/lenskit,blankazucenalg/lenskit,binweiwu/lenskit,blankazucenalg/lenskit,tajinder-txstate/lenskit,chrysalag/lenskit,amaliujia/lenskit,vijayvani/Lenskit,amaliujia/lenskit,vaibhav345/lenskit,kluver/lenskit,tajinder-txstate/lenskit,aglne/lenskit,tajinder-txstate/lenskit,kluver/lenskit,binweiwu/lenskit,kluver/lenskit,vaibhav345/lenskit,vaibhav345/lenskit,kluver/lenskit,vijayvani/Lenskit