alexreisner/geocoder — pull request #670 by petergoldstein (2014-06-25 08:39:05+00:00)
Title: Switch to byebug for MRI 2.x debugging.

Debugger is not working for 2.1.2 and up, and was never fully 2.x compatible. See details here - https://github.com/cldwalker/debugger#known-issues