title: Appengine appcfg.py vacuum_indexes stuck
body: <p>I am trying to remove unused indexes from my appengine app, but it seems like the command is stuck. I have ran it like 30 minutes ago, nothing is showing in my command line, indexes still exist in cloud console:</p>
  
  <pre><code>$ appcfg.py vacuum_indexes . --noisy
  12:10 PM Host: appengine.google.com
  12:10 PM Fetching index definitions diff.
  2016-05-18 12:10:13,874 DEBUG appengine_rpc_httplib2.py:465 _Authenticate configuring auth; needs_auth=False
  2016-05-18 12:10:13,874 DEBUG appengine_rpc_httplib2.py:244 Sending request to https://appengine.google.com/api/datastore/index/diff?app_id=&lt;myappname&gt; headers={'X-appcfg-api-version': '1', 'content-length': '2154', 'Content-Type': 'application/octet-stream'} body=indexes:
  &lt;indexes&gt;
  </code></pre>
  
  <p>Any ideas what could be causing this?</p>