docker-library/official-images — pull request #253 by tianon (2014-10-10 20:04:57+00:00)
Title: Switch Travis to "language: bash" (which will actually avoid all the "ruby" output once they deploy the change)

See also https://github.com/travis-ci/travis-ci/issues/2856 and https://github.com/travis-ci/travis-build/pull/306