我推送了最新的代码，然后我的heroku应用程序停止了工作。我检查了日志，收到了一条错误消息。有没有我应该移除的特定宝石？这是数据库错误吗？
弃用警告：供应商/插件中有Rails 2.3风格的插件！Rails4.0将删除对这些插件的支持。将它们移出并绑定到Gem文件中，或者将它们作为lib/myplugin/*和config/initializers/myplugin.rb折叠到应用程序中。有关更多信息，请参阅发行说明：http://weblog.rubyonrails.org/2012/1/4/rails-3-2-0-rc2-has-been-released。（从/app/config/environment.rb:5的<top（required）>调用）2012-05-23T00:08:04+00:0 app[web.1]：弃用警告：供应商/插件中有Rails 2.3风格的插件！Rails4.0将删除对这些插件的支持。将它们移出并绑定到Gem文件中，或者将它们作为lib/myplugin/*和config/initializers/myplugin.rb折叠到应用程序中。有关此方面的详细信息，请参阅发行说明：http://weblog.rubyonrails.org/2012/1/4/rails-3-2-0-rc2-has-been-released。（从/app/config/environment.rb:5的<top（required）>调用）2012-05-23T00:08:11+00:00 app[web.1]：/app/app/controllers/admin/users_controller.rb:1:在“<top（required）>”中：类UsersController的超类不匹配（TypeError）
我运行了一个heroku运行的rakedb:migrate，以防出现问题，并收到了类似的警告：
弃用警告：供应商/插件中有Rails 2.3风格的插件！Rails 4.0将删除对这些插件的支持。将它们移出并绑定到Gem文件中，或者将它们作为lib/myplugin/*和config/initializers/myplugin.rb折叠到应用程序中。有关更多信息，请参阅发行说明：http://weblog.rubyonrails.org/2012/1/4/rails-3-2-0-rc2-has-been-released。（从/app/config/environment.rb:5的<top（required）>调用）弃用警告：供应商/插件中有Rails 2.3风格的插件！Rails4.0将删除对这些插件的支持。将它们移出并绑定到Gem文件中，或者将它们作为lib/myplugin/*和config/initializers/myplugin.rb折叠到应用程序中。有关更多信息，请参阅发行说明：http://weblog.rubyonrails.org/2012/1/4/rails-3-2-0-rc2-has-been-released。（从/app/config/environment.rb:5的<top（required）>调用）/app/app/controllers/admin/users_controller.rb:1:in“<top（required）>”：类UsersController的超类不匹配（TypeError）来自/app/vendor/bundle/ruby/1.9.1/gems/activesupport-3.2.3/lib/active_support/dependencies。rb:251：在“require”中来自/app/vendor/bundle/ruby/1.9.1/gems/activesupport-3.2.3/lib/active_support/dependencies。rb:251：在“请求中的块”中来自/app/vendor/bundle/ruby/1.9.1/gems/activesupport-3.2.3/lib/active_support/dependency.rb:236:in“load_dependency”来自/app/vendor/bundle/ruby/1.9.1/gems/activesupport-3.2.3/lib/active_support/dependencies。rb:251：在“require”中来自/app/vendor/bundle/ruby/1.9.1/gems/activesupport-3.2.3/lib/active_support/dependencies。rb:359：在“require_or_load”中来自/app/vendor/bundle/ruby/1.9.1/gems/activesupport-3.2.3/lib/active_support/dependencies。rb:313:in `depend_on'来自/app/vendor/bundle/ruby/1.9.1/gems/activesupport-3.2.3/lib/active_support/dependencies。rb:225：在“require_dependency”中来自/app/vendor/bundle/ruby/1.9.1/gems/railties-3.2.3/lib/rails/engine.rb:439:in `block（2 levels）in eager_load！'来自/app/vendor/bundle/ruby/1.9.1/gems/railties-3.2.3/lib/rails/engine.rb:438:in“each”来自/app/vendor/bundle/ruby/1.9.1/gems/railies-3.2.3/lib/rails/engine.rb:438:in `block in eager_load！'来自/app/vendor/bundle/ruby/1.9.1/gems/railties-3.2.3/lib/rails/engine.rb:436:in“each”来自/app/vendor/bundle/ruby/1.9.1/gems/railies-3.2.3/lib/rails/engine.rb:436:in `eager_load！'来自/app/vendor/bundle/ruby/1.9.1/gems/railies-3.2.3/lib/rails/application/finisher.rb:53:in“block in<module:finisher>”来自/app/vendor/bundle/ruby/1.9.1/gems/railties-3.2.3/lib/rails/initializable.rb:30:in“instance_exec”来自/app/vendor/bundle/ruby/1.9.1/gems/railties-3.2.3/lib/rails/initializable.rb:30:in“run”来自/app/vendor/bundle/ruby/1.9.1/gems/railties-3.2.3/lib/rails/initializable.rb:55:in“run_initializers中的块”来自/app/vendor/bundle/ruby/1.9.1/gems/railies-3.2.3/lib/rails/initializable.rb:54:in“each”来自/app/vendor/bundle/ruby/1.9.1/gems/railties-3.2.3/lib/rails/initializable.rb:54:in `run_initializers'来自/app/vendor/bundle/ruby/1.9.1/gems/railties-3.2.3/lib/rails/application.rb:136:in“initialize！”来自/app/vendor/bundle/ruby/1.9.1/gems/railies-3.2.3/lib/rails/railtie/configurable.rb:30:in“method_missing”来自/app/config/environment.rb:5:in“＜顶部（必需）＞”来自/app/vendor/bundle/ruby/1.9.1/gems/activesupport-3.2.3/lib/active_support/dependencies。rb:251：在“require”中来自/app/vendor/bundle/ruby/1.9.1/gems/activesupport-3.2.3/lib/active_support/dependencies。rb:251：在“请求中的块”中来自/app/vendor/bundle/ruby/1.9.1/gems/activesupport-3.2.3/lib/active_support/dependency.rb:236:in“load_dependency”来自/app/vendor/bundle/ruby/1.9.1/gems/activesupport-3.2.3/lib/active_support/dependencies。rb:251：在“require”中来自/app/vendor/bundle/ruby/1.9.1/gems/railties-3.2.3/lib/rails/application.rb:103:in`require_environment！'来自/app/vendor/bundle/ruby/1.9.1/gems/railties-3.2.3/lib/rails/commands.rb:40:in“＜顶部（必需）＞”来自script/rails:6:在“require”中来自script/rails:6:在“<main>”中
这是我的宝石文件：
源'https://rubygems.org网站'gem'rails'，'3.2.3'gem“bootstrap-ass”，“2.0.0”gem“omniauth”gem“omniauth-facebook”gem'omniauth-twitter'gem'omniauth-oauth'宝石“设计”gem“cancan”宝石“回形针”宝石“谣言”gem“activeadmin”gem“acts_as_tree”宝石“成形”#捆绑边缘栏杆：#gem'rails'，：git=>'git://github.com/rails/rails.git'组：开发，：测试dogem“sqlite3”gem“nifty-generators”结束组：生产do宝石“pg”宝石“薄”结束#宝石仅用于资产，不需要#默认情况下在生产环境中。组：资产dogem“sass-rails”，“~>3.2.3”宝石“咖啡轨道”，“~>3.2.1'#请参见https://github.com/sstephenson/execjs#自述文件获得更多支持的运行时#gem'therubyracer'，：platform=>：rubygem“丑陋者”，'>=1.0.3'结束gem“jquery-rails”#使用ActiveModel has_secure_password#gem“bcrypt-ruby”，“~>3.0.0”#将Jbuilder模板用于JSON#gem“jbuilder”#使用unicorn作为应用服务器#宝石“独角兽”#使用Capistrano部署#宝石“capistrano”#使用调试器#gem“ruby-debug19”，：required=>“ruby-debug”
有没有我应该移除的特定宝石？
