Ask HN: Cross-platform free hosted CI server, with GitHub integration?

Popular hosted CI servers:

1. Gitlab CI

2. Drone.io CI

3. Travis CI

Special Requirements:

1. Cross-Platform, so that our python module can be tested and reported under Windows too.

2. Easy integration with Github

Current Setup

Travis CI - It is quite easy to setup, but lacks Windows support. Basically, something like Travis with windows support.

Is this possible?

It would be great if the CI server could report back which part of the test failed rather than just a FAIL message for any error. For eg. sometimes its good to know that only the PEP8 tests failed or it failed only on Python3 cases, without looking into the whole log.