language: ruby
sudo: false
rvm:
  - 2.1
  - 2.2
  - 2.3
  - 2.4
  - ruby-head
  - jruby-head
  - rbx-2
env:
  - COVERAGE=true
matrix:
  allow_failures:
    - rvm: "rbx-2"
    - rvm: "ruby-head"
    - rvm: "jruby-head"