COMMIT kill warnings	http://github.com/rubyspec/mspec/commit/12a59ca3739d448c7985f48a44d581bf10a52a41
COMMIT "should_not raise_error" will now output what error was raised, if any.	http://github.com/rubyspec/mspec/commit/56b084cb6dea7b818122cb11084058b7f4a52f13