language: ruby
sudo: false
rvm:
  - 2.0
  - 2.1
  - 2.2
  - 2.3
  - 2.4
  - 2.5
  - 2.6
  - ruby-head
matrix:
  allow_failures:
    - rvm: ruby-head
script: 'bundle exec rspec'
notifications:
  email:
    - false