language: ruby
cache: bundler
sudo: false
dist: trusty
matrix:
  fast_finish: true
  include:
    - rvm: 2.1
    - rvm: 2.2
    - rvm: 2.3
    - rvm: 2.4
    - rvm: 2.5
    - rvm: jruby-head
  allow_failures:
  # allow 2.5 to fail until Travis CI is fixed.
  # See travis-ci/travis-ci#8969
    - rvm: 2.5
    - rvm: jruby-head
notifications:
  email: false