One of two Travis CI builds failing: how can that be?

Hello everybody,

I’m a little confused about what Travis CI does. In an OpenSource project I’m contributing to we have as a problem - amongst others - that Travis is currently not passing. Problem is: In development locally everything is fine but one (of two) Travis builds seems to fail and I don’t quite understand why. Here’s the PR where you’ll find Travis’ reports: Fix master by andneuma · Pull Request #228 · magdalena19/ratMap · GitHub

I’d be glad if anyone could give me a clue!

thx and regards,