Perftools错误：找不到符号：\ ruby\ ruby 1.9.3-p194的当前\u线程

我在尝试执行rake db:migrate时遇到了这个错误。相当令人沮丧。我已经安装了perftools 2.0，但似乎没有帮助

这是完整的跟踪：

dn51vdfn:rails jasonvdm$ rake db:migrate --trace
** Invoke db:migrate (first_time)
** Invoke environment (first_time)
** Execute environment
rake aborted!
dlopen(/Users/jasonvdm/.rvm/gems/ruby-1.9.3-p194@wheelz/gems/perftools.rb-0.5.6/lib/perftools.bundle, 9): Symbol not found: _ruby_current_thread
Referenced from: /Users/jasonvdm/.rvm/gems/ruby-1.9.3-p194@wheelz/gems/perftools.rb-0.5.6/lib/perftools.bundle
Expected in: flat namespace
in /Users/jasonvdm/.rvm/gems/ruby-1.9.3-p194@wheelz/gems/perftools.rb-0.5.6/lib/perftools.bundle - /Users/jasonvdm/.rvm/gems/ruby-1.9.3-p194@wheelz/gems/perftools.rb-0.5.6/lib/perftools.bundle
/Users/jasonvdm/.rvm/gems/ruby-1.9.3-p194@wheelz/gems/activesupport-3.1.3/lib/active_support/dependencies.rb:240:in `require'
/Users/jasonvdm/.rvm/gems/ruby-1.9.3-p194@wheelz/gems/activesupport-3.1.3/lib/active_support/dependencies.rb:240:in `block in require'
/Users/jasonvdm/.rvm/gems/ruby-1.9.3-p194@wheelz/gems/activesupport-3.1.3/lib/active_support/dependencies.rb:223:in `block in load_dependency'
/Users/jasonvdm/.rvm/gems/ruby-1.9.3-p194@wheelz/gems/activesupport-3.1.3/lib/active_support/dependencies.rb:640:in `new_constants_in'
/Users/jasonvdm/.rvm/gems/ruby-1.9.3-p194@wheelz/gems/activesupport-3.1.3/lib/active_support/dependencies.rb:223:in `load_dependency'
/Users/jasonvdm/.rvm/gems/ruby-1.9.3-p194@wheelz/gems/activesupport-3.1.3/lib/active_support/dependencies.rb:240:in `require'
/Users/jasonvdm/.rvm/gems/ruby-1.9.3-p194@wheelz/gems/rack-perftools_profiler-0.5.0/lib/rack/perftools_profiler/profiler.rb:43:in `initialize'
/Users/jasonvdm/.rvm/gems/ruby-1.9.3-p194@wheelz/gems/rack-perftools_profiler-0.5.0/lib/rack/perftools_profiler/profiler_middleware.rb:20:in `new'
/Users/jasonvdm/.rvm/gems/ruby-1.9.3-p194@wheelz/gems/rack-perftools_profiler-0.5.0/lib/rack/perftools_profiler/profiler_middleware.rb:20:in `initialize'
/Users/jasonvdm/.rvm/gems/ruby-1.9.3-p194@wheelz/gems/rack-perftools_profiler-0.5.0/lib/rack/perftools_profiler.rb:20:in `new'
/Users/jasonvdm/.rvm/gems/ruby-1.9.3-p194@wheelz/gems/rack-perftools_profiler-0.5.0/lib/rack/perftools_profiler.rb:20:in `new'
/Users/jasonvdm/.rvm/gems/ruby-1.9.3-p194@wheelz/gems/actionpack-3.1.3/lib/action_dispatch/middleware/stack.rb:43:in `build'
/Users/jasonvdm/.rvm/gems/ruby-1.9.3-p194@wheelz/gems/actionpack-3.1.3/lib/action_dispatch/middleware/stack.rb:112:in `block in build'
/Users/jasonvdm/.rvm/gems/ruby-1.9.3-p194@wheelz/gems/actionpack-3.1.3/lib/action_dispatch/middleware/stack.rb:112:in `each'
/Users/jasonvdm/.rvm/gems/ruby-1.9.3-p194@wheelz/gems/actionpack-3.1.3/lib/action_dispatch/middleware/stack.rb:112:in `inject'
/Users/jasonvdm/.rvm/gems/ruby-1.9.3-p194@wheelz/gems/actionpack-3.1.3/lib/action_dispatch/middleware/stack.rb:112:in `build'
/Users/jasonvdm/.rvm/gems/ruby-1.9.3-p194@wheelz/gems/railties-3.1.3/lib/rails/engine.rb:447:in `app'
/Users/jasonvdm/.rvm/gems/ruby-1.9.3-p194@wheelz/gems/railties-3.1.3/lib/rails/application/finisher.rb:37:in `block in <module:Finisher>'

Tasks: TOP => db:migrate => environment

dn51vdfn:rails jasonvdm$rake db:migrate--trace
**调用数据库：迁移（第一次）
**调用环境（第一次）
**执行环境
雷克流产了！
dlopen（/Users/jasonvdm/.rvm/gems/ruby-1.9.3）-p194@wheelz/gems/perftools.rb-0.5.6/lib/perftools.bundle，9）：未找到符号：\u ruby\u current\u thread
引用自：/Users/jasonvdm/.rvm/gems/ruby-1.9.3-p194@wheelz/gems/perftools.rb-0.5.6/lib/perftools.bundle
应为：平面命名空间
在/Users/jasonvdm/.rvm/gems/ruby-1.9.3中-p194@wheelz/gems/perftools.rb-0.5.6/lib/perftools.bundle-/Users/jasonvdm/.rvm/gems/ruby-1.9.3-p194@wheelz/gems/perftools.rb-0.5.6/lib/perftools.bundle
/Users/jasonvdm/.rvm/gems/ruby-1.9.3-p194@wheelz/gems/activesupport-3.1.3/lib/active\u-support/dependencies.rb:240:in'require'
/Users/jasonvdm/.rvm/gems/ruby-1.9.3-p194@wheelz/gems/activesupport-3.1.3/lib/active\u support/dependencies.rb:240:in`block in require'
/Users/jasonvdm/.rvm/gems/ruby-1.9.3-p194@wheelz/gems/activesupport-3.1.3/lib/active\u-support/dependencies.rb:223:in'block-in-load\u-dependencity'
/Users/jasonvdm/.rvm/gems/ruby-1.9.3-p194@wheelz/gems/activesupport-3.1.3/lib/active\u-support/dependencies.rb:640:in'new\u-constants\u-in'
/Users/jasonvdm/.rvm/gems/ruby-1.9.3-p194@wheelz/gems/activesupport-3.1.3/lib/active\u-support/dependencies.rb:223:in'load\u-dependency'
/Users/jasonvdm/.rvm/gems/ruby-1.9.3-p194@wheelz/gems/activesupport-3.1.3/lib/active\u-support/dependencies.rb:240:in'require'
/Users/jasonvdm/.rvm/gems/ruby-1.9.3-p194@wheelz/gems/rack-perftools_profiler-0.5.0/lib/rack/perftools_profiler/profiler.rb:43:in'initialize'
/Users/jasonvdm/.rvm/gems/ruby-1.9.3-p194@wheelz/gems/rack-perftools\u profiler-0.5.0/lib/rack/perftools\u profiler/profiler\u中间件。rb:20:in'new'
/Users/jasonvdm/.rvm/gems/ruby-1.9.3-p194@wheelz/gems/rack-perftools\u profiler-0.5.0/lib/rack/perftools\u profiler/profiler\u中间件。rb:20:in'initialize'
/Users/jasonvdm/.rvm/gems/ruby-1.9.3-p194@wheelz/gems/rack-perftools_profiler-0.5.0/lib/rack/perftools_profiler.rb:20:in'new'
/Users/jasonvdm/.rvm/gems/ruby-1.9.3-p194@wheelz/gems/rack-perftools_profiler-0.5.0/lib/rack/perftools_profiler.rb:20:in'new'
/Users/jasonvdm/.rvm/gems/ruby-1.9.3-p194@wheelz/gems/actionpack-3.1.3/lib/action\u dispatch/middleware/stack.rb:43:in'build'
/Users/jasonvdm/.rvm/gems/ruby-1.9.3-p194@wheelz/gems/actionpack-3.1.3/lib/action\u dispatch/middleware/stack.rb:112:in'block in build'
/Users/jasonvdm/.rvm/gems/ruby-1.9.3-p194@wheelz/gems/actionpack-3.1.3/lib/action\u dispatch/middleware/stack.rb:112:in'each'
/Users/jasonvdm/.rvm/gems/ruby-1.9.3-p194@wheelz/gems/actionpack-3.1.3/lib/action\u dispatch/middleware/stack.rb:112:in'inject'
/Users/jasonvdm/.rvm/gems/ruby-1.9.3-p194@wheelz/gems/actionpack-3.1.3/lib/action\u dispatch/middleware/stack.rb:112:in'build'
/Users/jasonvdm/.rvm/gems/ruby-1.9.3-p194@wheelz/gems/railties-3.1.3/lib/rails/engine.rb:447:in'app'
/Users/jasonvdm/.rvm/gems/ruby-1.9.3-p194@wheelz/gems/railties-3.1.3/lib/rails/application/finisher.rb:37:in'block in'
任务：TOP=>db:migrate=>environment

---

帮忙？我正在使用Ruby 1.9.3-p194

我发现了这个：我也是，但是上面提到的修复没有帮助。他们似乎是为P0设计的，但仍然无法修复它，有人需要帮助吗？你说你安装了perftools 2.0。为什么错误消息仍然引用

perftools.rb-0.5.6

？试着清理一下你的宝石？很好。我应该先卸载perftools，然后重新安装吗？