Error when viewing Gists of another user

I can't reproduce this in every case, but nonetheless I do sometimes see this when running `<user> gist`:

<img width="532" alt="screen shot 2017-07-28 at 9 06 27 pm" src="https://user-images.githubusercontent.com/934497/28740863-c8db2876-73d8-11e7-87d0-c0505e6c984a.png">
