title: Heroku not resetting database
body: <p>I am attempting to reset my database on heroku using this:</p>
  
  <pre><code>heroku pg:reset SHARED_DATABASE
  </code></pre>
  
  <p>and then run:</p>
  
  <pre><code>heroku run rake db:create db:migrate db:seed
  </code></pre>
  
  <p>But I am getting the following error:</p>
  
  <pre><code>Validation failed: Email has already been taken
  </code></pre>
  
  <p>I have noticed by going into the heroku rails console that the users are not being dropped and thus this validation has failed.  What am I missing here?</p>