language: ruby
rvm:
  - ruby-head
  - 2.0
  - 2.1
  - 2.2
  - 2.3
  - 2.4
cache:
  bundler: true
sudo: false
matrix:
  allow_failures:
    - rvm: ruby-head
  fast_finish: true

language: ruby
rvm:
  - ruby-head
  - 2.6
  - 2.7
  - 2.8
  - 2.9
  - 3.0
cache:
  bundler: true
sudo: false
matrix:
  allow_failures:
    - rvm: ruby-head
  fast_finish: true

Test modern versions of Ruby
Test modern versions of Ruby