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  1. PODEPRECATION WARNING: You have Rails 2.3-style plugins in vendor/plugins! Support will be removed in Rails 4.0
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    copied!<blockquote> <p><strong>Possible Duplicate:</strong><br> <a href="https://stackoverflow.com/questions/9027403/rails-2-3-style-plugins-and-deprecation-warnings-running-task-in-heroku">Rails 2.3-style plugins and deprecation warnings running task in Heroku</a> </p> </blockquote> <p>I am running rake db:migrate gives me the following warnings and then aborts:</p> <pre><code>$ heroku rake db:migration --trace DEPRECATION WARNING: You have Rails 2.3-style plugins in vendor/plugins! Support forthese 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 &lt;top (required)&gt; at /app/Rakefile:7) 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 &lt;top (required)&gt; at /app/Rakefile:7) 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 &lt;top (required)&gt; at /app/Rakefile:7) rake aborted! Don't know how to build task 'db:migration' /app/.bundle/gems/ruby/1.9.1/gems/rake-0.9.2.2/lib/rake/task_manager.rb:49:in `[]' /app/.bundle/gems/ruby/1.9.1/gems/rake-0.9.2.2/lib/rake/application.rb:115:in`invoke_task' /app/.bundle/gems/ruby/1.9.1/gems/rake-0.9.2.2/lib/rake/application.rb:94:in `block (2 levels) in top_level' /app/.bundle/gems/ruby/1.9.1/gems/rake-0.9.2.2/lib/rake/application.rb:94:in `each' /app/.bundle/gems/ruby/1.9.1/gems/rake-0.9.2.2/lib/rake/application.rb:94:in `block in top_level' /app/.bundle/gems/ruby/1.9.1/gems/rake-0.9.2.2/lib/rake/application.rb:133:in `standard_exception_handling' /app/.bundle/gems/ruby/1.9.1/gems/rake-0.9.2.2/lib/rake/application.rb:88:in `top_level' /app/.bundle/gems/ruby/1.9.1/gems/rake-0.9.2.2/lib/rake/application.rb:66:in `block in run' /app/.bundle/gems/ruby/1.9.1/gems/rake-0.9.2.2/lib/rake/application.rb:133:in `standard_exception_handling' /app/.bundle/gems/ruby/1.9.1/gems/rake-0.9.2.2/lib/rake/application.rb:63:in `run' /app/.bundle/gems/ruby/1.9.1/gems/rake-0.9.2.2/bin/rake:33:in `&lt;top (required)&gt;' /app/.bundle/gems/ruby/1.9.1/bin/rake:19:in `load' /app/.bundle/gems/ruby/1.9.1/bin/rake:19:in `&lt;main&gt;' </code></pre> <p>when I checked <code>vendor/plugins</code> folder I only found a file called <code>.gitkeep</code> and is empty</p>
 

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