title: Homebrew doctor crashes
body: <p>I just upgraded &amp; updated my homebrew and now if I run <code>brew doctor</code>, I get the following errors and it fails to run. May I deleted the unexpected header files or is there a better solution?</p>
  
  <p><code>
  Warning: Your XQuartz (2.7.6) is outdated
  Please install XQuartz 2.7.7:
    <a href="https://xquartz.macosforge.org" rel="nofollow">https://xquartz.macosforge.org</a></p>
  
  <p>Warning: Unbrewed header files were found in /usr/local/include.
  If you didn't put them there on purpose they could cause problems when
  building Homebrew formulae, and may need to be deleted.</p>
  
  <p>Unexpected header files:
      /usr/local/include/node/ares.h
      /usr/local/include/node/ares_version.h
      /usr/local/include/node/eio-emul.h
      /usr/local/include/node/ev-emul.h
      /usr/local/include/node/node.h
      /usr/local/include/node/node_buffer.h
      /usr/local/include/node/node_object_wrap.h
      /usr/local/include/node/node_version.h
      /usr/local/include/node/uv-private/eio.h
      /usr/local/include/node/uv-private/ev.h
      /usr/local/include/node/uv-private/ngx-queue.h
      /usr/local/include/node/uv-private/tree.h
      /usr/local/include/node/uv-private/uv-unix.h
      /usr/local/include/node/uv-private/uv-win.h
      /usr/local/include/node/uv.h
      /usr/local/include/node/v8-debug.h
      /usr/local/include/node/v8-preparser.h
      /usr/local/include/node/v8-profiler.h
      /usr/local/include/node/v8-testing.h
      /usr/local/include/node/v8.h
      /usr/local/include/node/v8stdint.h
  </code></p>