如何调试不执行测试的rake规范；无限悬挂问题（导轨3）

source \'http://rubygems.org\'

gem \'rails\', \'3.0.4\'
gem \'rake\', \'0.9.2\'

# Bundle edge Rails instead:
# gem \'rails\', :git => \'git://github.com/rails/rails.git\'

# gem \'sqlite3-ruby\', :require => \'sqlite3\'
gem \'warden\'
gem \'devise\', \"= 1.2.1\"
gem \'devise_invitable\'
gem \'mysql\'
gem \'will_paginate\', \"~> 3.0.pre2\"
gem \'acts-as-taggable-on\'
gem \'acts_as_list\'
gem \'activemerchant\'
gem \'braintree\'
gem \'bartt-ssl_requirement\', :require => \'ssl_requirement\'
gem \"paperclip\"
gem \'jeditable-rails\'
gem \'rdiscount\'
gem \"nifty-generators\", :group => :development

gem \"exception_notification\", :git => \"git://github.com/rails/exception_notification\", :require => \'exception_notifier\'

# Deploy with Capistrano
gem \'capistrano\'
gem \'capistrano-ext\'



# Bundle gems for the local environment. Make sure to
# put test-only gems in this group so their generators
# and rake tasks are available in development mode:
group :development, :test do
  gem \'webrat\', \">=0.7.2\"
  gem \"rspec-rails\"
  gem \"ZenTest\"
  #gem \"autotest\"
  #gem \"autotest-rails\"
  gem \"cucumber\",         :git => \"git://github.com/cucumber/cucumber.git\"
  gem \"database_cleaner\", :git => \'git://github.com/bmabey/database_cleaner.git\'
  gem \"cucumber-rails\", \">= 0.3.2\",   :git => \"git://github.com/cucumber/cucumber-rails.git\"
  gem \'factory_girl_rails\'
  gem \"capybara\"
  #gem \"capybara-envjs\"
  gem \"launchy\"
  gem \"spork\"
  #gem \"ruby-debug\"
  gem \"cancan\"
end

bill$ rake spec
/Users/bill/.rvm/gems/ruby-1.9.2-head/gems/bundler-1.0.0/lib/bundler.rb:197: warning: Insecure world writable dir /opt in PATH, mode 040777
/Users/bill/.rvm/rubies/ruby-1.9.2-head/bin/ruby -S bundle exec rspec ./spec/controllers/products_controller_spec.rb ./spec/controllers/roles_controller_spec.rb ./spec/controllers/users_controller_spec.rb ./spec/models/product_spec.rb ./spec/models/role_spec.rb ./spec/models/user_spec.rb
/Users/bill/.rvm/gems/ruby-1.9.2-head/gems/bundler-1.0.0/lib/bundler.rb:197: warning: Insecure world writable dir /opt in PATH, mode 040777
/Users/bill/.rvm/gems/ruby-1.9.2-head/gems/bundler-1.0.0/lib/bundler.rb:197: warning: Insecure world writable dir /opt in PATH, mode 040777