Garbage value when declare a variable inside of a for loop

[MilkeeyCat]

fn printf(format: *i8, _: usize) -> void;
fn main() -> u8 {
    for let i: u8 = 0; i < 2; i = i + 1 {
        let value: usize = i as usize;

        printf("%d\n", value);
    }
}

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