% curl www.google.com/humans.txt
  Google is built by a large team of engineers, designers, researchers,
  robots, and others in many different sites across the globe. It is
  updated continuously, and built with more tools and technologies than
  we can shake a stick at. If you'd like to help us out, see
  google.com/jobs.

Apparently some security scanner tests some php vulnerability based on fopen trying to load that.