fails:Random.srand returns an arbitrary seed if .srand wasn't called previously with an argument and no argument is supplied this time
fails:Random.srand returns the previous argument to .srand if one was given and no argument is supplied
fails:Random.srand returns an arbitrary seed if .srand wasn't called previously with an argument and 0 is supplied this time
fails:Random.srand returns the previous argument to .srand if one was given and 0 is supplied
fails:Random.srand seeds Random.rand such that its return value is deterministic
fails:Random.srand seeds Kernel.rand such that its return value is deterministic
