error[E0662]: input operand constraint contains '='
  --> $DIR/asm-in-bad-modifier.rs:33:39
   |
LL |         asm!("mov $1, $0" : "=r"(x) : "=r"(5)); //~ ERROR operand constraint contains '='
   |                                       ^^^^

error[E0663]: input operand constraint contains '+'
  --> $DIR/asm-in-bad-modifier.rs:34:39
   |
LL |         asm!("mov $1, $0" : "=r"(y) : "+r"(5)); //~ ERROR operand constraint contains '+'
   |                                       ^^^^

error: aborting due to 2 previous errors

Some errors occurred: E0662, E0663.
For more information about an error, try `rustc --explain E0662`.