error[E0493]: destructor of `Vec` cannot be evaluated at compile-time --> $DIR/issue-65394.rs:12:9 | LL | let mut x = Vec::::new(); | ^^^^^ the destructor for this type cannot be evaluated in constants ... LL | }; | - value is dropped here error: aborting due to 1 previous error For more information about this error, try `rustc --explain E0493`.