私が知る限り、私は favicon.ico を何らかの形で参照していませんが、(開発モードで) Rails サーバーへの各リクエストは次で終了します:
Started GET "/assets/ico/favicon.ico" for 127.0.0.1 at 2012-06-12 20:18:02 -0700
Served asset /ico/favicon.ico - 404 Not Found (3ms)
ActionController::RoutingError (No route matches [GET] "/assets/ico/favicon.ico"):
actionpack (3.2.3) lib/action_dispatch/middleware/debug_exceptions.rb:21:in `call'
actionpack (3.2.3) lib/action_dispatch/middleware/show_exceptions.rb:56:in `call'
railties (3.2.3) lib/rails/rack/logger.rb:26:in `call_app'
railties (3.2.3) lib/rails/rack/logger.rb:16:in `call'
actionpack (3.2.3) lib/action_dispatch/middleware/request_id.rb:22:in `call'
rack (1.4.1) lib/rack/methodoverride.rb:21:in `call'
rack (1.4.1) lib/rack/runtime.rb:17:in `call'
activesupport (3.2.3) lib/active_support/cache/strategy/local_cache.rb:72:in `call'
rack (1.4.1) lib/rack/lock.rb:15:in `call'
actionpack (3.2.3) lib/action_dispatch/middleware/static.rb:62:in `call'
railties (3.2.3) lib/rails/engine.rb:479:in `call'
railties (3.2.3) lib/rails/application.rb:220:in `call'
rack (1.4.1) lib/rack/content_length.rb:14:in `call'
railties (3.2.3) lib/rails/rack/log_tailer.rb:14:in `call'
rack (1.4.1) lib/rack/handler/webrick.rb:59:in `service'
/Users/twler/.rvm/rubies/ruby-1.9.3-p194/lib/ruby/1.9.1/webrick/httpserver.rb:138:in `service'
/Users/twler/.rvm/rubies/ruby-1.9.3-p194/lib/ruby/1.9.1/webrick/httpserver.rb:94:in `run'
/Users/twler/.rvm/rubies/ruby-1.9.3-p194/lib/ruby/1.9.1/webrick/server.rb:191:in `block in start_thread'
これは webrick 関連の問題ですか、それとも設定オプションなどを変更する必要がありますか?
編集: favicon.ico を app/assets/ico/favicon.ico、lib/assets/ico/favicon.ico、および public/favicon.ico に配置しました。favicon ロゴはブラウザにも表示されますが、Rails サーバーのログにはまだ 404 が表示されます。助言がありますか?