=> Booting WEBrick => Rails 4.2.4 application starting in development on http://localhost:3000 => Run `rails server -h` for more startup options => Ctrl-C to shutdown server DEPRECATION WARNING: Sprockets method `register_engine` is deprecated. Please register a mime type using `register_mime_type` then use `register_compressor` or `register_transformer`. https://github.com/rails/sprockets/blob/master/guides/extending_sprockets.md#supporting-all-versions-of-sprockets-in-processors (called from block in <class:Railtie> at /home/francesco/.rvm/gems/ruby-2.2.2@crm_2016/bundler/gems/less-rails-05186ebeea3a/lib/less/rails/railtie.rb:16) DEPRECATION WARNING: You are using the a deprecated processor interface Less::Rails::ImportProcessor. Please update your processor interface: https://github.com/rails/sprockets/blob/master/guides/extending_sprockets.md#supporting-all-versions-of-sprockets-in-processors (called from block in <class:Railtie> at /home/francesco/.rvm/gems/ruby-2.2.2@crm_2016/bundler/gems/less-rails-05186ebeea3a/lib/less/rails/railtie.rb:21) [2016-07-22 11:24:33] INFO WEBrick 1.3.1 [2016-07-22 11:24:33] INFO ruby 2.2.2 (2015-04-13) [x86_64-linux] [2016-07-22 11:24:33] INFO WEBrick::HTTPServer#start: pid=22380 port=3000