rspec/rspec-mocks — pull request #371 by JonRowe (2013-07-19 04:02:31+00:00)
Title: Make at_least(0) raise

> At least 0 is weird and deprecated. This removes it for RSpec 3.

This is @samphippen's #342 picked across to a fresh branch, as it seems the original PR has some hellish kind of git muddle...