fails:Enumerable#zip combines each element of the receiver with the element of the same index in arrays given as arguments
fails:Enumerable#zip passes each element of the result array to a block and return nil if a block is given
fails:Enumerable#zip fills resulting array with nils if an argument array is too short
fails:Enumerable#zip converts arguments to enums using #to_enum
fails:Enumerable#zip gathers whole arrays as elements when each yields multiple
