我们遇到了服务器问题，因此替换 VM 启动了许多复制到新 VM（即 Ubuntu 12.04）的项目。
我正在运行 cap deploy 到服务器，一切顺利，直到 rake db:migrate 步骤，此时我得到：
** [out :: 63.247.75.161] 耙子中止！** [out :: 63.247.75.161] 未知验证器：'RedirectUriValidator' ** [out :: 63.247.75.161] /var/www/test/shared/bundle/ruby/1.9.1/gems/activemodel-3.2.14 /lib/active_model/validations/validates.rb:96:in rescue in block in validates'
** [out :: 63.247.75.161] /var/www/test/shared/bundle/ruby/1.9.1/gems/activemodel-3.2.14/lib/active_model/validations/validates.rb:93:inblock in validates' ** [out :: 63.247.75.161] /var/www/test/shared/bundle/ruby/1.9.1/gems/activemodel-3.2 .14/lib/active_model/validations/validates.rb:90:in each'
** [out :: 63.247.75.161] /var/www/test/shared/bundle/ruby/1.9.1/gems/activemodel-3.2.14/lib/active_model/validations/validates.rb:90:invalidates' ** [out :: 63.247.75.161] /var/www/test/shared/bundle/ruby/1.9.1/gems/doorkeeper-0.6 .7/lib/doorkeeper/models/application.rb:10:in <class:Application>'
** [out :: 63.247.75.161] /var/www/test/shared/bundle/ruby/1.9.1/gems/doorkeeper-0.6.7/lib/doorkeeper/models/application.rb:2:in' ** [out :: 63.247.75.161] /var/www/test/shared/bundle/ruby/1.9.1/gems/doorkeeper-0.6。 7/lib/doorkeeper/models/application.rb:1:in<top (required)>'
** [out :: 63.247.75.161] /var/www/test/shared/bundle/ruby/1.9.1/gems/activesupport-3.2.14/lib/active_support/dependencies.rb:251:in要求'** [out :: 63.247.75.161] /var/www/test/shared/bundle/ruby/1.9.1/gems/activesupport-3.2.14/lib/active_support/dependencies.rb:251:in block in require'
** [out :: 63.247.75.161] /var/www/test/shared/bundle/ruby/1.9.1/gems/activesupport-3.2.14/lib/active_support/dependencies.rb:236:inload_dependency' ** [out :: 63.247.75.161] /var/www/test/shared/bundle/ruby/1.9.1/gems/activesupport-3.2.14/lib/active_support/dependencies.rb:251:in require'
** [out :: 63.247.75.161] /var/www/test/shared/bundle/ruby/1.9.1/gems/doorkeeper-0.6.7/lib/doorkeeper/config.rb:24:inenable_orm' ** [出:: 63.247.75.161] /var/www/test/shared/bundle/ruby/1.9.1/gems/doorkeeper-0.6.7/lib/doorkeeper/config.rb:10:in configure'
** [out :: 63.247.75.161] /var/www/test/releases/20131011015404/config/initializers/doorkeeper.rb:2:in' ** [出: ：63.247.75.161] /var/www/test/shared/bundle/ruby/1.9.1/gems/activesupport-3.2.14/lib/active_support/dependencies.rb:245:in load'
** [out :: 63.247.75.161] /var/www/test/shared/bundle/ruby/1.9.1/gems/activesupport-3.2.14/lib/active_support/dependencies.rb:245:inblock in load' ** [out : ：63.247.75.161] /var/www/test/shared/bundle/ruby/1.9.1/gems/activesupport-3.2.14/lib/active_support/dependencies.rb:236:inload_dependency'
** [out :: 63.247.75.161] /var/www/test/shared/bundle/ruby/1.9.1/gems/activesupport-3.2.14/lib/active_support/dependencies.rb:245:in加载'** [out :: 63.247.75.161] /var/www/test/shared/bundle/ruby/1.9.1/gems/railties-3.2.14/lib/rails/engine.rb:593:in block (2 levels) in <class:Engine>'
** [out :: 63.247.75.161] /var/www/test/shared/bundle/ruby/1.9.1/gems/railties-3.2.14/lib/rails/engine.rb:592:ineach' ** [out :: 63.247.75.161] /var/www/test/shared/bundle/ruby/1.9.1/gems/railties-3.2.14/lib/rails/engine.rb:592:in block in <class:Engine>'
** [out :: 63.247.75.161] /var/www/test/shared/bundle/ruby/1.9.1/gems/railties-3.2.14/lib/rails/initializable.rb:30:ininstance_exec' ** [out :: 63.247.75.161] ** [out :: 63.247.75.161] /var/www/test/shared/bundle/ruby/1.9.1/gems/railties-3.2.14/lib/rails/initializable.rb :30:in run'
** [out :: 63.247.75.161] /var/www/test/shared/bundle/ruby/1.9.1/gems/railties-3.2.14/lib/rails/initializable.rb:55:inblock in run_initializers' ** [out :: 63.247.75.161] /var/www/test/shared/bundle/ruby/1.9.1/gems/railties-3.2.14/lib/rails/initializable.rb :54:in each'
** [out :: 63.247.75.161] /var/www/test/shared/bundle/ruby/1.9.1/gems/railties-3.2.14/lib/rails/initializable.rb:54:inrun_initializers' ** [out :: 63.247.75.161] /var/www/test/shared/bundle/ruby/1.9.1/gems/railties-3.2.14/lib/rails/application.rb:136 ：在initialize!'
** [out :: 63.247.75.161] /var/www/test/shared/bundle/ruby/1.9.1/gems/railties-3.2.14/lib/rails/railtie/configurable.rb:30:inmethod_missing' ** [out :: 63.247.75.161] /var/www/test/releases/20131011015404/config/environment.rb:5:in<top (required)>'
** [out :: 63.247.75.161] /var/www/test/shared/bundle/ruby/1.9.1/gems/activesupport-3.2.14/lib/active_support/dependencies.rb:251:in要求' ** [out :: 63.247.75.161] /var/www/test /shared/bundle/ruby/1.9.1/gems/activesupport-3.2.14/lib/active_support/dependencies.rb:251:in block in require'
** [out :: 63.247.75.161] /var/www/test/shared/bundle/ruby/1.9.1/gems/activesupport-3.2.14/lib/active_support/dependencies.rb:236:inload_dependency' ** [out :: 63.247.75.161] /var/www/test/shared /bundle/ruby/1.9.1/gems/activesupport-3.2.14/lib/active_support/dependencies.rb:251:in require'
** [out :: 63.247.75.161] /var/www/test/shared/bundle/ruby/1.9.1/gems/railties-3.2.14/lib/rails/application.rb:103:inrequire_environment！** [out :: 63.247.75.161] /var/www/test/shared/bundle/ruby/1.9.1/gems/railties-3.2.14/lib/rails/application.rb:305:in `block (2 level) in initialize_tasks' ** [out :: 63.247.75.161] Tasks: TOP => db:migrate => environment ** [out :: 63.247.75.161] （通过使用 --trace 运行任务查看完整跟踪）
我尝试了几种不同的门卫，以及 ruby 1.9.2 和 1.9.3。
我不明白为什么这会突然坏掉。自上次部署以来，我已经做了很多应用程序更改，但没有围绕门卫实施。