3 ms·

Rails 4.0.0 application starting in development on http://0.0.0.0:3000 http://0.0.0.0:3000 This most likely means Rack::Lock is used in your test.

• resca79 13y ago
  I used the following command rails s puma -e production
• rubiquity 13y ago
  Rack::Lock was removed as a default in Rails 4.