rvm:
  - 2.0.0
  - 2.1
  - 2.2
  - 2.3.0
  - 2.4.0
  - 2.5.0
  - 2.6.0
  - 2.7.0
  - 3.0.0
  - ruby-head

before_install:
  - gem install bundler -v '1.11.2'

matrix:
  fast_finish: true