error[E0623]: lifetime mismatch
  --> $DIR/ref-mut-self-async.rs:13:9
   |
LL |     async fn ref_self(&mut self, f: &u32) -> &u32 {
   |                       ---------              ----
   |                       |                      |
   |                       |                      this `async fn` implicitly returns an `impl Future<Output = &u32>`
   |                       this parameter and the returned future are declared with different lifetimes...
LL |         f
   |         ^ ...but data from `f` is held across an await point here

error[E0623]: lifetime mismatch
  --> $DIR/ref-mut-self-async.rs:19:9
   |
LL |     async fn ref_Self(self: &mut Self, f: &u32) -> &u32 {
   |                             ---------              ----
   |                             |                      |
   |                             |                      this `async fn` implicitly returns an `impl Future<Output = &u32>`
   |                             this parameter and the returned future are declared with different lifetimes...
LL |         f
   |         ^ ...but data from `f` is held across an await point here

error[E0623]: lifetime mismatch
  --> $DIR/ref-mut-self-async.rs:23:9
   |
LL |     async fn box_ref_Self(self: Box<&mut Self>, f: &u32) -> &u32 {
   |                                     ---------               ----
   |                                     |                       |
   |                                     |                       this `async fn` implicitly returns an `impl Future<Output = &u32>`
   |                                     this parameter and the returned future are declared with different lifetimes...
LL |         f
   |         ^ ...but data from `f` is held across an await point here

error[E0623]: lifetime mismatch
  --> $DIR/ref-mut-self-async.rs:27:9
   |
LL |     async fn pin_ref_Self(self: Pin<&mut Self>, f: &u32) -> &u32 {
   |                                     ---------               ----
   |                                     |                       |
   |                                     |                       this `async fn` implicitly returns an `impl Future<Output = &u32>`
   |                                     this parameter and the returned future are declared with different lifetimes...
LL |         f
   |         ^ ...but data from `f` is held across an await point here

error[E0623]: lifetime mismatch
  --> $DIR/ref-mut-self-async.rs:31:9
   |
LL |     async fn box_box_ref_Self(self: Box<Box<&mut Self>>, f: &u32) -> &u32 {
   |                                             ---------                ----
   |                                             |                        |
   |                                             |                        this `async fn` implicitly returns an `impl Future<Output = &u32>`
   |                                             this parameter and the returned future are declared with different lifetimes...
LL |         f
   |         ^ ...but data from `f` is held across an await point here

error[E0623]: lifetime mismatch
  --> $DIR/ref-mut-self-async.rs:35:9
   |
LL |     async fn box_pin_ref_Self(self: Box<Pin<&mut Self>>, f: &u32) -> &u32 {
   |                                             ---------                ----
   |                                             |                        |
   |                                             |                        this `async fn` implicitly returns an `impl Future<Output = &u32>`
   |                                             this parameter and the returned future are declared with different lifetimes...
LL |         f
   |         ^ ...but data from `f` is held across an await point here

error: aborting due to 6 previous errors

For more information about this error, try `rustc --explain E0623`.