error: attempt to subtract with overflow
  --> $DIR/pub_const_err.rs:15:20
   |
LL | pub const Z: u32 = 0 - 1;
   |                    ^^^^^
   |
note: lint level defined here
  --> $DIR/pub_const_err.rs:11:9
   |
LL | #![deny(const_err)]
   |         ^^^^^^^^^

error: aborting due to previous error