title: Where did the ubuntu wily sources go?
body: <p>I'm getting fail to fetch errors in apt-get:</p>
  
  <blockquote>
    <p>Failed to fetch
    <a href="http://us.archive.ubuntu.com/ubuntu/dists/wily/main/binary-amd64/Packages" rel="noreferrer">http://us.archive.ubuntu.com/ubuntu/dists/wily/main/binary-amd64/Packages</a>
    404  Not Found [IP: 91.189.91.23 80]</p>
  </blockquote>
  
  <p>I thought it was a sources error, or DNS error, but /dists/wily/ really doesn't exist at us.archive.ubuntu.com anymore. Nor does it exist in several mirrors I tried. Where did it go? What's the valid wily source now?</p>