Ruby on rails heroku在部署时请求调试器

Heroku不会部署。我得到以下错误：

2013-07-20T05:46:05.382706+00:00 heroku[web.1]: Starting process with command `bundle exec rails server -p 15871`
2013-07-20T05:46:10.657881+00:00 app[web.1]: DEPRECATION WARNING: You have Rails 2.3-style plugins in vendor/plugins! Support for these plugins will be removed in Rails 4.0. Move them out and bundle them in your Gemfile, or fold them in to your app as lib/myplugin/* and config/initializers/myplugin.rb. See the release notes for more on this: http://weblog.rubyonrails.org/2012/1/4/rails-3-2-0-rc2-has-been-released. (called from <top (required)> at /app/config/environment.rb:5)
2013-07-20T05:46:10.658274+00:00 app[web.1]: DEPRECATION WARNING: You have Rails 2.3-style plugins in vendor/plugins! Support for these plugins will be removed in Rails 4.0. Move them out and bundle them in your Gemfile, or fold them in to your app as lib/myplugin/* and config/initializers/myplugin.rb. See the release notes for more on this: http://weblog.rubyonrails.org/2012/1/4/rails-3-2-0-rc2-has-been-released. (called from <top (required)> at /app/config/environment.rb:5)
2013-07-20T05:46:13.705246+00:00 app[web.1]: => Booting WEBrick
2013-07-20T05:46:13.705246+00:00 app[web.1]: => Rails 3.2.13 application starting in production on http://0.0.0.0:15871
2013-07-20T05:46:13.705246+00:00 app[web.1]: => Call with -d to detach
2013-07-20T05:46:13.705246+00:00 app[web.1]: => Ctrl-C to shutdown server
2013-07-20T05:46:13.705246+00:00 app[web.1]: Connecting to database specified by DATABASE_URL
2013-07-20T05:46:18.032181+00:00 app[web.1]: Exiting
2013-07-20T05:46:18.035248+00:00 app[web.1]: /app/vendor/bundle/ruby/1.9.1/gems/activesupport-3.2.13/lib/active_support/dependencies.rb:317:in `rescue in depend_on': No such file to load -- debugger (LoadError)
2013-07-20T05:46:18.035248+00:00 app[web.1]:  from /app/vendor/bundle/ruby/1.9.1/gems/activesupport-3.2.13/lib/active_support/dependencies.rb:312:in `depend_on'
2013-07-20T05:46:18.035248+00:00 app[web.1]:  from /app/vendor/bundle/ruby/1.9.1/gems/activesupport-3.2.13/lib/active_support/dependencies.rb:225:in `require_dependency'
2013-07-20T05:46:18.035248+00:00 app[web.1]:  from /app/vendor/bundle/ruby/1.9.1/gems/railties-3.2.13/lib/rails/engine.rb:439:in `block (2 levels) in eager_load!'
2013-07-20T05:46:18.035248+00:00 app[web.1]:  from /app/vendor/bundle/ruby/1.9.1/gems/railties-3.2.13/lib/rails/engine.rb:438:in `each'
2013-07-20T05:46:18.035248+00:00 app[web.1]:  from /app/vendor/bundle/ruby/1.9.1/gems/railties-3.2.13/lib/rails/engine.rb:438:in `block in eager_load!'
2013-07-20T05:46:18.035248+00:00 app[web.1]:  from /app/vendor/bundle/ruby/1.9.1/gems/railties-3.2.13/lib/rails/engine.rb:436:in `each'
2013-07-20T05:46:18.035248+00:00 app[web.1]:  from /app/vendor/bundle/ruby/1.9.1/gems/railties-3.2.13/lib/rails/engine.rb:436:in `eager_load!'
2013-07-20T05:46:18.035248+00:00 app[web.1]:  from /app/vendor/bundle/ruby/1.9.1/gems/railties-3.2.13/lib/rails/application/finisher.rb:53:in `block in <module:Finisher>'
2013-07-20T05:46:18.035248+00:00 app[web.1]:  from /app/vendor/bundle/ruby/1.9.1/gems/railties-3.2.13/lib/rails/initializable.rb:30:in `instance_exec'
2013-07-20T05:46:18.035421+00:00 app[web.1]:  from /app/vendor/bundle/ruby/1.9.1/gems/railties-3.2.13/lib/rails/initializable.rb:30:in `run'
2013-07-20T05:46:18.035421+00:00 app[web.1]:  from /app/vendor/bundle/ruby/1.9.1/gems/railties-3.2.13/lib/rails/initializable.rb:55:in `block in run_initializers'
2013-07-20T05:46:18.035421+00:00 app[web.1]:  from /app/vendor/bundle/ruby/1.9.1/gems/railties-3.2.13/lib/rails/initializable.rb:54:in `each'
2013-07-20T05:46:18.035421+00:00 app[web.1]:  from /app/vendor/bundle/ruby/1.9.1/gems/railties-3.2.13/lib/rails/initializable.rb:54:in `run_initializers'
2013-07-20T05:46:18.035421+00:00 app[web.1]:  from /app/vendor/bundle/ruby/1.9.1/gems/railties-3.2.13/lib/rails/application.rb:136:in `initialize!'
2013-07-20T05:46:18.035421+00:00 app[web.1]:  from /app/vendor/bundle/ruby/1.9.1/gems/railties-3.2.13/lib/rails/railtie/configurable.rb:30:in `method_missing'
2013-07-20T05:46:18.035421+00:00 app[web.1]:  from /app/config/environment.rb:5:in `<top (required)>'
2013-07-20T05:46:18.043408+00:00 app[web.1]:  from /app/vendor/bundle/ruby/1.9.1/gems/activesupport-3.2.13/lib/active_support/dependencies.rb:251:in `require'
2013-07-20T05:46:18.043408+00:00 app[web.1]:  from /app/vendor/bundle/ruby/1.9.1/gems/activesupport-3.2.13/lib/active_support/dependencies.rb:251:in `block in require'
2013-07-20T05:46:18.043408+00:00 app[web.1]:  from /app/vendor/bundle/ruby/1.9.1/gems/activesupport-3.2.13/lib/active_support/dependencies.rb:236:in `load_dependency'
2013-07-20T05:46:18.043408+00:00 app[web.1]:  from /app/vendor/bundle/ruby/1.9.1/gems/activesupport-3.2.13/lib/active_support/dependencies.rb:251:in `require'
2013-07-20T05:46:18.043408+00:00 app[web.1]:  from /app/config.ru:3:in `block in <main>'
2013-07-20T05:46:18.043408+00:00 app[web.1]:  from /app/vendor/bundle/ruby/1.9.1/gems/rack-1.4.5/lib/rack/builder.rb:51:in `instance_eval'
2013-07-20T05:46:18.043408+00:00 app[web.1]:  from /app/vendor/bundle/ruby/1.9.1/gems/rack-1.4.5/lib/rack/builder.rb:51:in `initialize'
2013-07-20T05:46:18.043408+00:00 app[web.1]:  from /app/config.ru:in `new'
2013-07-20T05:46:18.043408+00:00 app[web.1]:  from /app/config.ru:in `<main>'
2013-07-20T05:46:18.043408+00:00 app[web.1]:  from /app/vendor/bundle/ruby/1.9.1/gems/rack-1.4.5/lib/rack/builder.rb:40:in `eval'
2013-07-20T05:46:18.043631+00:00 app[web.1]:  from /app/vendor/bundle/ruby/1.9.1/gems/rack-1.4.5/lib/rack/builder.rb:40:in `parse_file'
2013-07-20T05:46:18.045133+00:00 app[web.1]:  from /app/vendor/bundle/ruby/1.9.1/gems/rack-1.4.5/lib/rack/server.rb:200:in `app'
2013-07-20T05:46:18.045133+00:00 app[web.1]:  from /app/vendor/bundle/ruby/1.9.1/gems/railties-3.2.13/lib/rails/commands/server.rb:46:in `app'
2013-07-20T05:46:18.045133+00:00 app[web.1]:  from /app/vendor/bundle/ruby/1.9.1/gems/rack-1.4.5/lib/rack/server.rb:304:in `wrapped_app'
2013-07-20T05:46:18.045133+00:00 app[web.1]:  from /app/vendor/bundle/ruby/1.9.1/gems/rack-1.4.5/lib/rack/server.rb:254:in `start'
2013-07-20T05:46:18.045133+00:00 app[web.1]:  from /app/vendor/bundle/ruby/1.9.1/gems/railties-3.2.13/lib/rails/commands/server.rb:70:in `start'
2013-07-20T05:46:18.045133+00:00 app[web.1]:  from /app/vendor/bundle/ruby/1.9.1/gems/railties-3.2.13/lib/rails/commands.rb:55:in `block in <top (required)>'
2013-07-20T05:46:18.045133+00:00 app[web.1]:  from /app/vendor/bundle/ruby/1.9.1/gems/railties-3.2.13/lib/rails/commands.rb:50:in `tap'
2013-07-20T05:46:18.045133+00:00 app[web.1]:  from /app/vendor/bundle/ruby/1.9.1/gems/railties-3.2.13/lib/rails/commands.rb:50:in `<top (required)>'
2013-07-20T05:46:18.045133+00:00 app[web.1]:  from script/rails:6:in `require'
2013-07-20T05:46:18.045133+00:00 app[web.1]:  from script/rails:6:in `<main>'
2013-07-20T05:46:19.556879+00:00 heroku[web.1]: Process exited with status 1
2013-07-20T05:46:19.566212+00:00 heroku[web.1]: State changed from starting to crashed

2013-07-20T05:46:05.382706+00:00 heroku[web.1]：使用命令“bundle exec rails server-p 15871”启动进程`
2013-07-20T05:46:10.657881+00:00应用程序[web.1]：弃用警告：供应商/插件中有Rails 2.3样式的插件！对这些插件的支持将在Rails 4.0中删除。将它们移出并打包到您的Gemfile中，或者将它们作为lib/myplugin/*和config/initializers/myplugin.rb折叠到您的应用程序中。有关这方面的更多信息，请参阅发行说明：http://weblog.rubyonrails.org/2012/1/4/rails-3-2-0-rc2-has-been-released. （从at/app/config/environment.rb:5调用）
2013-07-20T05:46:10.658274+00:00应用程序[web.1]：弃用警告：供应商/插件中有Rails 2.3样式的插件！对这些插件的支持将在Rails 4.0中删除。将它们移出并打包到您的Gemfile中，或者将它们作为lib/myplugin/*和config/initializers/myplugin.rb折叠到您的应用程序中。有关这方面的更多信息，请参阅发行说明：http://weblog.rubyonrails.org/2012/1/4/rails-3-2-0-rc2-has-been-released. （从at/app/config/environment.rb:5调用）
2013-07-20T05:46:13.705246+00:00应用程序[web.1]：=>启动WEBrick
2013-07-20T05:46:13.705246+00:00应用程序[web.1]：=>Rails 3.2.13应用程序在http://0.0.0.0:15871
2013-07-20T05:46:13.705246+00:00应用程序[web.1]：=>使用-d调用以分离
2013-07-20T05:46:13.705246+00:00应用程序[web.1]：=>Ctrl-C关闭服务器
2013-07-20T05:46:13.705246+00:00应用程序[web.1]：连接到数据库URL指定的数据库
2013-07-20T05:46:18.032181+00:00应用程序[网站1]：退出
2013-07-20T05:46:18.035248+00:00应用程序[web.1]：/app/vendor/bundle/ruby/1.9.1/gems/activesupport-3.2.13/lib/active\u support/dependencies.rb:317:in“rescue in dependence”中：没有这样的文件要加载--调试器（LoadError）
2013-07-20T05:46:18.035248+00:00应用程序[web.1]：from/app/vendor/bundle/ruby/1.9.1/gems/activesupport-3.2.13/lib/active\u support/dependencies.rb:312:in“依赖”
2013-07-20T05:46:18.035248+00:00应用程序[web.1]：from/app/vendor/bundle/ruby/1.9.1/gems/activesupport-3.2.13/lib/active_support/dependenciencies.rb:225:“需要依赖项”中
2013-07-20T05:46:18.035248+00:00应用程序[web.1]：from/app/vendor/bundle/ruby/1.9.1/gems/railties-3.2.13/lib/rails/engine.rb:439:in“块（两个级别）在加载中！”
2013-07-20T05:46:18.035248+00:00应用程序[web.1]：from/app/vendor/bundle/ruby/1.9.1/gems/railties-3.2.13/lib/rails/engine.rb:438:in'each'
2013-07-20T05:46:18.035248+00:00应用程序[web.1]：from/app/vendor/bundle/ruby/1.9.1/gems/railties-3.2.13/lib/rails/engine.rb:438:in'block in eager_load！'
2013-07-20T05:46:18.035248+00:00应用程序[web.1]：from/app/vendor/bundle/ruby/1.9.1/gems/railties-3.2.13/lib/rails/engine.rb:436:in'each'
2013-07-20T05:46:18.035248+00:00应用程序[web.1]：from/app/vendor/bundle/ruby/1.9.1/gems/railties-3.2.13/lib/rails/engine.rb:436:in'eager_load！'
2013-07-20T05:46:18.035248+00:00应用程序[web.1]：from/app/vendor/bundle/ruby/1.9.1/gems/railties-3.2.13/lib/rails/application/finisher.rb:53:in'block in'
2013-07-20T05:46:18.035248+00:00应用程序[web.1]：from/app/vendor/bundle/ruby/1.9.1/gems/railties-3.2.13/lib/rails/initializable.rb:30:in'instance_exec'
2013-07-20T05:46:18.035421+00:00应用程序[web.1]：from/app/vendor/bundle/ruby/1.9.1/gems/railties-3.2.13/lib/rails/initializable.rb:30:in'run'
2013-07-20T05:46:18.035421+00:00应用程序[web.1]：from/app/vendor/bundle/ruby/1.9.1/gems/railties-3.2.13/lib/rails/initializable.rb:55:in'block in run_initializer'
2013-07-20T05:46:18.035421+00:00应用程序[web.1]：from/app/vendor/bundle/ruby/1.9.1/gems/railties-3.2.13/lib/rails/initializable.rb:54:in'each'
2013-07-20T05:46:18.035421+00:00应用程序[web.1]：from/app/vendor/bundle/ruby/1.9.1/gems/railties-3.2.13/lib/rails/initializable.rb:54:in'run_initializers'
2013-07-20T05:46:18.035421+00:00应用程序[web.1]：from/app/vendor/bundle/ruby/1.9.1/gems/railties-3.2.13/lib/rails/application.rb:136:in'initialize！'
2013-07-20T05:46:18.035421+00:00应用程序[web.1]：from/app/vendor/bundle/ruby/1.9.1/gems/railties-3.2.13/lib/rails/railtie/configurable.rb:30:in'method_missing'
2013-07-20T05:46:18.035421+00:00应用程序[web.1]：from/app/config/environment.rb:5:in`'
2013-07-20T05:46:18.043408+00:00应用程序[web.1]：from/app/vendor/bundle/ruby/1.9.1/gems/activesupport-3.2.13/lib/active_support/dependenciences.rb:251:in'require'
2013-07-20T05:46:18.043408+00:00应用程序[web.1]：from/app/vendor/bundle/ruby/1.9.1/gems/activesupport-3.2.13/lib/active_support/dependenciences.rb:251:“请求中的块”中
2013-07-20T05:46:18.043408+00:00应用程序[web.1]：from/app/vendor/bundle/ruby/1.9.1/gems/activesupport-3.2.13/lib/active_support/dependenciencies.rb:236:in'load_dependenciency'
2013-07-20T05:46:18.043408+00:00应用程序[web.1]：from/app/vendor/bundle/ruby/1.9.1/gems/activesupport-3.2.13/lib/active_support/dependenciences.rb:251:in'require'
2013-07-20T05:46:18.043408+00:00应用程序[web.1]：from/app/config.ru:3:in'block in'
2013-07-20T05:46:18.043408+00:00应用程序[web.1]：from/app/vendor/bundle/ruby/1.9.1/gems/rack-1.4.5/lib/rack/builder.rb:51:in'instance_eval'
2013-07-20T05:46:18.043408+00:00应用程序[web.1]：from/app/vendor/bundle/ruby/1.9.1/gems/rack-1.4.5/lib/rack/builder.rb:51:在“初始化”中
2013-07-20T05:46:18.043408+00:00应用程序[web.1]：from/app/config.ru:in'new'
2013-07-20T05:46:18.043408+00:00应用程序[web.1]：from/app/config.ru:in`'
2013-07-20T05:46:18.043408+00:00应用程序[web.1]：from/app/vendor/bundle/ruby/1.9.1/gems/rack-1.4.5/lib/rack/builder.rb:40:in'eval'
2013-07-20T05:46:18.043631+00:00应用程序[web.1]：from/app/vendor/bundle/ruby/1.9.1/gems/rack-1.4.5/lib/rack/builder.rb:40:in'parse_file'
2013-07-20T05:46:18.045133+00:00应用程序[web.1]：from/app/vendor/bundle/ruby/1.9.1/gems/rack-1.4.5/lib/rack/server.rb:200:in'app'
2013-07-20T05:46:18.045133+00:00应用程序[web.1]：from/app/vendor/bundle/ruby/1.9.1/gems/railties-3.2.13/lib/rails/commands/server.rb:46:in'app'
2013-07-20T05:46:18.045133+00:00应用程序[web.1]：from/app/vendor/bundle/ruby/1.9.1/gems/rack-1.4.5/lib/rack/s
heroku config:unset PATH