fails:Integer#times returns self
fails:Integer#times yields each value from 0 to self - 1
fails:Integer#times skips the current iteration when encountering 'next'
fails:Integer#times skips all iterations when encountering 'break'
fails:Integer#times skips all iterations when encountering break with an argument and returns that argument
fails:Integer#times executes a nested while loop containing a break expression
fails:Integer#times executes a nested #times
fails:Integer#times returns an Enumerator
