For scripts to help you find projects running 1.0, generate a draft 2.0 config.yml file, and to get started with migration, see the CircleCI 2.0 Migration documentation which has a complete list of tools with links and descriptions.
CircleCI does not recognize the Ruby version
We infer your Ruby version from your .rvmrc file, .ruby-version file, or Gemfile.
You can also specify it in your circle.yml
If you don’t do any of the above, we’ll use Ruby 1.9.3-p448
or 1.8.7-p358, whichever we think is best.
You can control the version
if we got it wrong.