error: non-binding `let` on a type that implements `Drop` --> $DIR/let_underscore_drop.rs:17:5 | LL | let _ = Box::new(()); | ^^^^^^^^^^^^^^^^^^^^^ | = help: consider using an underscore-prefixed named binding or dropping explicitly with `std::mem::drop` = note: `-D clippy::let-underscore-drop` implied by `-D warnings` error: non-binding `let` on a type that implements `Drop` --> $DIR/let_underscore_drop.rs:18:5 | LL | let _ = Droppable; | ^^^^^^^^^^^^^^^^^^ | = help: consider using an underscore-prefixed named binding or dropping explicitly with `std::mem::drop` error: non-binding `let` on a type that implements `Drop` --> $DIR/let_underscore_drop.rs:19:5 | LL | let _ = Some(Droppable); | ^^^^^^^^^^^^^^^^^^^^^^^^ | = help: consider using an underscore-prefixed named binding or dropping explicitly with `std::mem::drop` error: aborting due to 3 previous errors