language: ruby
rvm:
  - 2.0.0
  - 2.1.1
  - 2.2.5
  - 2.3.4
  - 2.4.2
  - jruby
  - ruby-head
  - jruby-head
matrix:
  allow_failures:
    - rvm: ruby-head
    - rvm: jruby-head