language: ruby
rvm:
  - 2.1.10
  - 2.2.5
  - 2.3.1

git:
  submodules: false

before_install:
  - gem install bundler --version=1.17.3

script:
  - bundle exec rake test

language: ruby
rvm:
  - 2.1.10
  - 2.2.5
  - 2.3.1

git:
  submodules: false

before_install:
  - gem install bundler -v '< 2'

script:
  - bundle exec rake test

Install the latest non-2.0 Bundler in CI rather than a specific version
Install the latest non-2.0 Bundler in CI rather than a specific version
