Error in test

I would like to give some feedback about ...

From: https://py.checkio.org/mission/the-fastest-horse/solve/

In test after "check": Fail:fastest_horse(["1:10","1:15","1:20"],["1:05","1:10","1:15"],["2:59","2:59","2:59"])

Think what right: fastest_horse([["1:10","1:15","1:20"],["1:05","1:10","1:15"],["2:59","2:59","2:59"]])