error[E0308]: mismatched types --> $DIR/const-tup-index-span.rs:3:23 | LL | const TUP: (usize,) = 5usize << 64; | ^^^^^^^^^^^^ expected tuple, found usize | = note: expected type `(usize,)` found type `usize` error[E0080]: evaluation of constant value failed --> $DIR/const-tup-index-span.rs:6:18 | LL | const ARR: [i32; TUP.0] = []; | ^^^ referenced constant has errors error: aborting due to 2 previous errors Some errors have detailed explanations: E0080, E0308. For more information about an error, try `rustc --explain E0080`.