error: unused pinned `MustUsePtr` that must be used
  --> $DIR/must_use-pin.rs:42:5
   |
LL |     pin_must_use_ptr();
   |     ^^^^^^^^^^^^^^^^^^
   |
note: the lint level is defined here
  --> $DIR/must_use-pin.rs:1:9
   |
LL | #![deny(unused_must_use)]
   |         ^^^^^^^^^^^^^^^

error: unused pinned boxed `MustUse` that must be used
  --> $DIR/must_use-pin.rs:44:5
   |
LL |     pin_box_must_use();
   |     ^^^^^^^^^^^^^^^^^^

error: aborting due to 2 previous errors