[ci] Fix running CI on Ruby 2.3.1

airbnb / nerve

A service registration daemon that performs health checks; companion to airbnb/synapse

MIT License

942 stars 151 forks source link

Closed panchr closed 4 years ago

panchr commented 4 years ago

Because of an unspecified Bundler version, CI broke on Ruby 2.3.1. For example, see: https://travis-ci.org/airbnb/nerve/jobs/649609864.

This mimics the CI configuration in airbnb/synapse.

@lcharignon