1 error[E0080]: evaluation of constant value failed
2 --> $DIR/const-len-underflow-subspans.rs:8:17
4 LL | let a: [i8; ONE - TWO] = unimplemented!();
5 | ^^^^^^^^^ attempt to subtract with overflow
7 error: aborting due to previous error
9 For more information about this error, try `rustc --explain E0080`.