error[E0277]: the trait bound `S: Deref` is not satisfied
  --> $DIR/arbitrary_self_types_pin_needing_borrow.rs:10:14
   |
LL |     Pin::new(S).x();
   |     -------- ^ the trait `Deref` is not implemented for `S`
   |     |
   |     required by a bound introduced by this call
   |
note: required by a bound in `Pin::<Ptr>::new`
  --> $SRC_DIR/core/src/pin.rs:LL:COL
help: consider borrowing here
   |
LL |     Pin::new(&S).x();
   |              +
LL |     Pin::new(&mut S).x();
   |              ++++

error[E0599]: no method named `x` found for struct `Pin` in the current scope
  --> $DIR/arbitrary_self_types_pin_needing_borrow.rs:10:17
   |
LL |     Pin::new(S).x();
   |                 ^ method not found in `Pin<S>`
   |
note: method is available for `Pin<&mut S>`
  --> $DIR/arbitrary_self_types_pin_needing_borrow.rs:5:5
   |
LL |     fn x(self: Pin<&mut Self>) {
   |     ^^^^^^^^^^^^^^^^^^^^^^^^^^

error: aborting due to 2 previous errors

Some errors have detailed explanations: E0277, E0599.
For more information about an error, try `rustc --explain E0277`.