error[E0277]: the trait bound `Pin<&MyUnpinType>: DerefMut` is not satisfied
  --> $DIR/pin-impl-deref.rs:24:20
   |
LL |     impl_deref_mut(r_unpin)
   |     -------------- ^^^^^^^ the trait `DerefMut` is not implemented for `Pin<&MyUnpinType>`
   |     |
   |     required by a bound introduced by this call
   |
   = note: required for `Pin<&MyUnpinType>` to implement `DerefMut`
note: required by a bound in `impl_deref_mut`
  --> $DIR/pin-impl-deref.rs:22:27
   |
LL | fn impl_deref_mut(_: impl DerefMut) {}
   |                           ^^^^^^^^ required by this bound in `impl_deref_mut`
help: consider mutably borrowing here
   |
LL |     impl_deref_mut(&mut r_unpin)
   |                    ++++

error[E0277]: the trait bound `Pin<&MyPinType>: DerefMut` is not satisfied
  --> $DIR/pin-impl-deref.rs:31:20
   |
LL |     impl_deref_mut(r_pin)
   |     -------------- ^^^^^ the trait `DerefMut` is not implemented for `Pin<&MyPinType>`
   |     |
   |     required by a bound introduced by this call
   |
   = note: required for `Pin<&MyPinType>` to implement `DerefMut`
note: required by a bound in `impl_deref_mut`
  --> $DIR/pin-impl-deref.rs:22:27
   |
LL | fn impl_deref_mut(_: impl DerefMut) {}
   |                           ^^^^^^^^ required by this bound in `impl_deref_mut`
help: consider mutably borrowing here
   |
LL |     impl_deref_mut(&mut r_pin)
   |                    ++++

error[E0277]: `PhantomPinned` cannot be unpinned
  --> $DIR/pin-impl-deref.rs:31:20
   |
LL |     impl_deref_mut(r_pin)
   |     -------------- ^^^^^ within `MyPinType`, the trait `Unpin` is not implemented for `PhantomPinned`
   |     |
   |     required by a bound introduced by this call
   |
   = note: consider using the `pin!` macro
           consider using `Box::pin` if you need to access the pinned value outside of the current scope
note: required because it appears within the type `MyPinType`
  --> $DIR/pin-impl-deref.rs:15:8
   |
LL | struct MyPinType(core::marker::PhantomPinned);
   |        ^^^^^^^^^
   = note: required for `Pin<&MyPinType>` to implement `DerefMut`
note: required by a bound in `impl_deref_mut`
  --> $DIR/pin-impl-deref.rs:22:27
   |
LL | fn impl_deref_mut(_: impl DerefMut) {}
   |                           ^^^^^^^^ required by this bound in `impl_deref_mut`

error[E0277]: `PhantomPinned` cannot be unpinned
  --> $DIR/pin-impl-deref.rs:36:20
   |
LL |     impl_deref_mut(r_pin)
   |     -------------- ^^^^^ within `MyPinType`, the trait `Unpin` is not implemented for `PhantomPinned`
   |     |
   |     required by a bound introduced by this call
   |
   = note: consider using the `pin!` macro
           consider using `Box::pin` if you need to access the pinned value outside of the current scope
note: required because it appears within the type `MyPinType`
  --> $DIR/pin-impl-deref.rs:15:8
   |
LL | struct MyPinType(core::marker::PhantomPinned);
   |        ^^^^^^^^^
   = note: required for `Pin<&mut MyPinType>` to implement `DerefMut`
note: required by a bound in `impl_deref_mut`
  --> $DIR/pin-impl-deref.rs:22:27
   |
LL | fn impl_deref_mut(_: impl DerefMut) {}
   |                           ^^^^^^^^ required by this bound in `impl_deref_mut`

error: aborting due to 4 previous errors

For more information about this error, try `rustc --explain E0277`.