title: rails s: Could not find rake-10.4.2 in any of the sources (Bundler::GemNotFound)
body: <p>When I start rails with:</p>
  
  <pre><code>$ rails s
  </code></pre>
  
  <p>I get:</p>
  
  <pre><code>/Users/snowcrash/.rvm/gems/ruby-2.1.5@global/gems/bundler-1.3.5/lib/bundler/spec_set.rb:92:in `block in materialize': Could not find rake-10.4.2 in any of the sources (Bundler::GemNotFound)
  </code></pre>
  
  <p>So, I ran <code>bundle install</code>:</p>
  
  <pre><code>$ bundle install
  Using rake 10.4.2
  </code></pre>
  
  <p>but <code>gem list rake</code> gives:</p>
  
  <pre><code>*** LOCAL GEMS ***
  
  rake (10.1.0, 10.0.4)
  </code></pre>
  
  <p>How come I don't have <code>rake 10.4.2</code> installed?</p>
  
  <p>Also, when I run <code>bundle check</code> it gives me:</p>
  
  <pre><code>The Gemfile's dependencies are satisfied
  </code></pre>
  
  <p>which does not seem to be correct. Why?</p>
  
  <p>==== UPDATE</p>
  
  <p>I fixed the problem with <code>rake</code> by doing:</p>
  
  <pre><code>gem install rake
  </code></pre>
  
  <p>but why did I have to install it manually? I thought that was Bundler's job.</p>
  
  <p>And trying to start rails again gave me another problem:</p>
  
  <pre><code>Could not find multi_json-1.10.1 in any of the sources (Bundler::GemNotFound)
  </code></pre>
  
  <p>Clearly there's some underlying problem here. Any suggestions?</p>