error: register `s1` conflicts with register `d0`
  --> $DIR/reg-conflict.rs:17:31
   |
LL |         asm!("", out("d0") _, out("s1") _);
   |                  -----------  ^^^^^^^^^^^ register `s1`
   |                  |
   |                  register `d0`

error: aborting due to 1 previous error