Not possible to use bigger type than u8 in for loop

[MilkeeyCat]

fn printf(format: *i8, _: usize) -> void;
fn main() -> u8 {
    for let i: usize = 0; i < 2; i = i + 1 {
        printf("%d\n", i);
    }
}

{standard input}: Assembler messages:
{standard input}:43: Error: operand type mismatch for `mov'
ld: cannot find main.o: No such file or directory
No such file or directory (os error 2)