title: rake aborted! Can't mass-assign protected attributes: authentication_token
body: <p>I already found some people fixing this issue modifying the attr_accessible but I think this error might be in the gem rake itself?</p>
  
  <pre><code>rake --trace db:seed
  </code></pre>
  
  <p>-- log output begin --</p>
  
  <pre><code>** Invoke db:seed (first_time)
  ** Execute db:seed
  ** Invoke db:abort_if_pending_migrations (first_time)
  ** Invoke environment (first_time)
  ** Execute environment
  ** Invoke db:load_config (first_time)
  ** Execute db:load_config
  ** Execute db:abort_if_pending_migrations
  rake aborted!
  Can't mass-assign protected attributes: authentication_token
  /Users/devx/.rvm/gems/ruby-1.9.3-p362/gems/activemodel-3.2.8/lib/active_model/mass_assignment_security/sanitizer.rb:48:in `process_removed_attributes'
  /Users/devx/.rvm/gems/ruby-1.9.3-p362/gems/activemodel-3.2.8/lib/active_model/mass_assignment_security/sanitizer.rb:20:in `debug_protected_attribute_removal'
  /Users/devx/.rvm/gems/ruby-1.9.3-p362/gems/activemodel-3.2.8/lib/active_model/mass_assignment_security/sanitizer.rb:12:in `sanitize'
  /Users/devx/.rvm/gems/ruby-1.9.3-p362/gems/activemodel-3.2.8/lib/active_model/mass_assignment_security.rb:230:in `sanitize_for_mass_assignment'
  /Users/devx/.rvm/gems/ruby-1.9.3-p362/gems/activerecord-3.2.8/lib/active_record/attribute_assignment.rb:75:in `assign_attributes'
  /Users/devx/.rvm/gems/ruby-1.9.3-p362/gems/activerecord-3.2.8/lib/active_record/base.rb:498:in `initialize'
  /Users/devx/.rvm/gems/ruby-1.9.3-p362/gems/activerecord-3.2.8/lib/active_record/persistence.rb:44:in `new'
  /Users/devx/.rvm/gems/ruby-1.9.3-p362/gems/activerecord-3.2.8/lib/active_record/persistence.rb:44:in `create'
  /Users/devx/passbook_rails_example/db/seeds.rb:1:in `&lt;top (required)&gt;'
  /Users/devx/.rvm/gems/ruby-1.9.3-p362/gems/activesupport-3.2.8/lib/active_support/dependencies.rb:245:in `load'
  /Users/devx/.rvm/gems/ruby-1.9.3-p362/gems/activesupport-3.2.8/lib/active_support/dependencies.rb:245:in `block in load'
  /Users/devx/.rvm/gems/ruby-1.9.3-p362/gems/activesupport-3.2.8/lib/active_support/dependencies.rb:236:in `load_dependency'
  /Users/devx/.rvm/gems/ruby-1.9.3-p362/gems/activesupport-3.2.8/lib/active_support/dependencies.rb:245:in `load'
  /Users/devx/.rvm/gems/ruby-1.9.3-p362/gems/railties-3.2.8/lib/rails/engine.rb:520:in `load_seed'
  /Users/devx/.rvm/gems/ruby-1.9.3-p362/gems/activerecord-3.2.8/lib/active_record/railties/databases.rake:309:in `block (2 levels) in &lt;top (required)&gt;'
  /Users/devx/.rvm/gems/ruby-1.9.3-p362/gems/rake-0.9.2.2/lib/rake/task.rb:205:in `call'
  /Users/devx/.rvm/gems/ruby-1.9.3-p362/gems/rake-0.9.2.2/lib/rake/task.rb:205:in `block in execute'
  /Users/devx/.rvm/gems/ruby-1.9.3-p362/gems/rake-0.9.2.2/lib/rake/task.rb:200:in `each'
  /Users/devx/.rvm/gems/ruby-1.9.3-p362/gems/rake-0.9.2.2/lib/rake/task.rb:200:in `execute'
  /Users/devx/.rvm/gems/ruby-1.9.3-p362/gems/rake-0.9.2.2/lib/rake/task.rb:158:in `block in invoke_with_call_chain'
  /Users/devx/.rvm/rubies/ruby-1.9.3-p362/lib/ruby/1.9.1/monitor.rb:211:in `mon_synchronize'
  /Users/devx/.rvm/gems/ruby-1.9.3-p362/gems/rake-0.9.2.2/lib/rake/task.rb:151:in `invoke_with_call_chain'
  /Users/devx/.rvm/gems/ruby-1.9.3-p362/gems/rake-0.9.2.2/lib/rake/task.rb:144:in `invoke'
  /Users/devx/.rvm/gems/ruby-1.9.3-p362/gems/rake-0.9.2.2/lib/rake/application.rb:116:in `invoke_task'
  /Users/devx/.rvm/gems/ruby-1.9.3-p362/gems/rake-0.9.2.2/lib/rake/application.rb:94:in `block (2 levels) in top_level'
  /Users/devx/.rvm/gems/ruby-1.9.3-p362/gems/rake-0.9.2.2/lib/rake/application.rb:94:in `each'
  /Users/devx/.rvm/gems/ruby-1.9.3-p362/gems/rake-0.9.2.2/lib/rake/application.rb:94:in `block in top_level'
  /Users/devx/.rvm/gems/ruby-1.9.3-p362/gems/rake-0.9.2.2/lib/rake/application.rb:133:in `standard_exception_handling'
  /Users/devx/.rvm/gems/ruby-1.9.3-p362/gems/rake-0.9.2.2/lib/rake/application.rb:88:in `top_level'
  /Users/devx/.rvm/gems/ruby-1.9.3-p362/gems/rake-0.9.2.2/lib/rake/application.rb:66:in `block in run'
  /Users/devx/.rvm/gems/ruby-1.9.3-p362/gems/rake-0.9.2.2/lib/rake/application.rb:133:in `standard_exception_handling'
  /Users/devx/.rvm/gems/ruby-1.9.3-p362/gems/rake-0.9.2.2/lib/rake/application.rb:63:in `run'
  /Users/devx/.rvm/gems/ruby-1.9.3-p362/gems/rake-0.9.2.2/bin/rake:33:in `&lt;top (required)&gt;'
  /Users/devx/.rvm/gems/ruby-1.9.3-p362/bin/rake:19:in `load'
  /Users/devx/.rvm/gems/ruby-1.9.3-p362/bin/rake:19:in `&lt;main&gt;'
  /Users/devx/.rvm/gems/ruby-1.9.3-p362/bin/ruby_noexec_wrapper:14:in `eval'
  /Users/devx/.rvm/gems/ruby-1.9.3-p362/bin/ruby_noexec_wrapper:14:in `&lt;main&gt;'
  Tasks: TOP =&gt; db:seed
  </code></pre>
  
  <p>-- log output end --</p>