That's how Homebrew works. Other could use it but not install or upgrade. From H...

		garretraziel on Oct 1, 2015 \| parent \| context \| favorite \| on: El Capitan and Homebrew That's how Homebrew works. Other could use it but not install or upgrade. From Homebrew docs: https://github.com/Homebrew/homebrew/blob/master/share/doc/h...