error[E0623]: lifetime mismatch
  --> $DIR/ref-mut-self.rs:11:9
   |
LL |     fn ref_self(&mut self, f: &u32) -> &u32 {
   |                               ----     ----
   |                               |
   |                               this parameter and the return type are declared with different lifetimes...
LL |         f
   |         ^ ...but data from `f` is returned here

error[E0623]: lifetime mismatch
  --> $DIR/ref-mut-self.rs:17:9
   |
LL |     fn ref_Self(self: &mut Self, f: &u32) -> &u32 {
   |                                     ----     ----
   |                                     |
   |                                     this parameter and the return type are declared with different lifetimes...
LL |         f
   |         ^ ...but data from `f` is returned here

error[E0623]: lifetime mismatch
  --> $DIR/ref-mut-self.rs:21:9
   |
LL |     fn box_ref_Self(self: Box<&mut Self>, f: &u32) -> &u32 {
   |                                              ----     ----
   |                                              |
   |                                              this parameter and the return type are declared with different lifetimes...
LL |         f
   |         ^ ...but data from `f` is returned here

error[E0623]: lifetime mismatch
  --> $DIR/ref-mut-self.rs:25:9
   |
LL |     fn pin_ref_Self(self: Pin<&mut Self>, f: &u32) -> &u32 {
   |                                              ----     ----
   |                                              |
   |                                              this parameter and the return type are declared with different lifetimes...
LL |         f
   |         ^ ...but data from `f` is returned here

error[E0623]: lifetime mismatch
  --> $DIR/ref-mut-self.rs:29:9
   |
LL |     fn box_box_ref_Self(self: Box<Box<&mut Self>>, f: &u32) -> &u32 {
   |                                                       ----     ----
   |                                                       |
   |                                                       this parameter and the return type are declared with different lifetimes...
LL |         f
   |         ^ ...but data from `f` is returned here

error[E0623]: lifetime mismatch
  --> $DIR/ref-mut-self.rs:33:9
   |
LL |     fn box_pin_ref_Self(self: Box<Pin<&mut Self>>, f: &u32) -> &u32 {
   |                                                       ----     ----
   |                                                       |
   |                                                       this parameter and the return type are declared with different lifetimes...
LL |         f
   |         ^ ...but data from `f` is returned here

error: aborting due to 6 previous errors

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