sudo: false
language: ruby
cache: bundler
rvm:
  - 1.9.3
  - 2.0.0
  - 2.1
  - 2.2.1
  - 2.2.2
  - 2.3.3
  - 2.4.0
  - jruby-19mode
  - jruby-20mode
before_install:
  - gem install bundler

sudo: false
language: ruby
cache: bundler
rvm:
  - 1.9.3
  - 2.0.0
  - 2.1
  - 2.2.1
  - 2.2.2
  - 2.3.3
  - 2.4.0
  - jruby-19mode
  - jruby-20mode
before_install:
  - gem install bundler:1.17.3

Use bundler 1.17.3 to pass CI in Ruby < 2.3
Use bundler 1.17.3 to pass CI in Ruby < 2.3
