title: Two gitlab-ci runners for one project
body: <p>I used to have a project on github with a <a href="https://travis-ci.org/" rel="noreferrer">travis</a> and an <a href="https://www.appveyor.com/" rel="noreferrer">appveyor</a> integration service configured. Thus I was able to make sur my project was compiling ok on both <em>OSX</em> and <em>Windows</em> plateform.</p>
  
  <p>I'm now working with gitlab and ci runners. I have two runners configured:</p>
  
  <ul>
  <li>One on a <em>OSX</em> machine</li>
  <li>One on a <em>Windows</em> machine</li>
  </ul>
  
  <p>Unfortunately when I add both runners in my project settings > CI/CD > Runners settings, only one is triggered upon push (the <em>OSX</em> one). </p>
  
  <p>If I disable the <em>OSX</em> runner, the <em>Windows</em> runner is triggered fine.</p>