Compilation hangs on `rotate_left` call

[mrk-its]

#![no_std]
#![feature(start)]
#![allow(unused_variables)]

use core::panic::PanicInfo;
use ufmt_stdio::*;

#[panic_handler]
fn panic(info: &PanicInfo) -> ! {
    loop {}
}

#[start]
fn main(_argc: isize, _argv: *const *const u8) -> isize {
    let mut result: u16 = 0xff;

    for i in 0..2u32 {
        result = result.rotate_left(i);
        println!("r: {}", result);
    }
    0
}

[mrk-its]

https://github.com/llvm-mos/llvm-mos/issues/234