title: Rails: Could not find minitest-4.7.5 in any of the sources
body: <p>Here is a trouble: on my remote server command <code>gem list</code> shows:</p>
  
  <pre><code>some gems
  minitest (4.7.5)  
  ....
  </code></pre>
  
  <p><code>bundle show minitest</code> command shows:</p>
  
  <pre><code>/var/lib/gems/1.9.1/gems/minitest-4.7.5
  </code></pre>
  
  <p><code>bundle show rails</code> shows the same directory</p>
  
  <p><code>bundle -v</code> - 1.6.2 (the latest version)</p>
  
  <p>But I've an error: <code>Could not find minitest-4.7.5 in any of the sources (Bundler::GemNotFound)</code></p>
  
  <h2>The steps I've made</h2>
  
  <ul>
  <li>Delete <code>Gemfile.lock</code> and <code>bundle install</code> again</li>
  <li>Reinstall bundler</li>
  <li>Ruby version 2.1.2</li>
  </ul>
  
  <p>Bundle install output shows <code>Using minitest (4.7.5)</code></p>