fails:Time#+ increments the time by the specified amount as rational numbers
fails:Time#+ is a commutative operator
fails:Time#+ adds a negative Float
fails:Time#+ accepts arguments that can be coerced into Rational
fails:Time#+ raises TypeError on argument that can't be coerced into Rational
fails:Time#+ returns a UTC time if self is UTC
fails:Time#+ returns a non-UTC time if self is non-UTC
fails:Time#+ returns a time with the same fixed offset as self
fails:Time#+ tracks microseconds
fails:Time#+ tracks nanoseconds
fails:Time#+ maintains microseconds precision
fails:Time#+ maintains nanoseconds precision
fails:Time#+ maintains subseconds precision
fails:Time#+ maintains precision
