error[E0401]: can't use generic parameters from outer item --> $DIR/use-self-in-inner-fn.rs:6:25 | LL | impl A { | ---- `Self` type implicitly declared here, by this `impl` ... LL | fn peach(this: &Self) { | ^^^^ | | | use of generic parameter from outer item | refer to the type directly here instead error: aborting due to previous error For more information about this error, try `rustc --explain E0401`.