title: Error during Ubuntu kernel source download
body: <p>I needed to download the source for the Ubuntu kernel that I'm running. So I followed <a href="https://wiki.ubuntu.com/Kernel/BuildYourOwnKernel" rel="nofollow noreferrer">these instructions</a>. The download was almost successful. Right at the end of it I got:</p>
  
  <blockquote>
    <p>W: Can't drop privileges for downloading as file
    'linux-hwe_4.10.0-32.36~16.04.1.dsc' couldn't be accessed by user
    '_apt'. - pkgAcquire::Run (13: Permission denied)</p>
  </blockquote>
  
  <p>Does anyone know what the problem is and what I should do?</p>