You are setting a key that conflicts with a built-in method Apivore::Swagger#version

[MiralDesai]

Rest of the error:

/$userpath/.rbenv/versions/2.4.2/lib/ruby/gems/2.4.0/gems/apivore-1.6.2/lib/apivore/swagger.rb:19.

I assume it's talking about this line in my request spec:

subject { Apivore::SwaggerChecker.instance_for('/docs/swagger.json') }

However to me it looks like it's setup exactly as the docs suggest. Seems like a bug with the gem.

[wvengen]

See omniauth/omniauth#872 for what looks like a similar issue in Omniauth.