1 error: attempt to subtract with overflow
2 --> $DIR/const-len-underflow-subspans.rs:18:17
4 LL | let a: [i8; ONE - TWO] = unimplemented!();
7 = note: #[deny(const_err)] on by default
9 error[E0080]: could not evaluate constant expression
10 --> $DIR/const-len-underflow-subspans.rs:18:12
12 LL | let a: [i8; ONE - TWO] = unimplemented!();
15 | attempt to subtract with overflow
17 error: aborting due to 2 previous errors
19 For more information about this error, try `rustc --explain E0080`.