error[E0521]: borrowed data escapes outside of function --> $DIR/impl-on-dyn-trait-with-implicit-static-bound.rs:21:9 | LL | fn use_it<'a, T>(val: &'a dyn ObjectTrait) -> impl OtherTrait<'a> + 'a { | -- --- `val` is a reference that is only valid in the function body | | | lifetime `'a` defined here LL | val.use_self::() | ^^^^^^^^^^^^^^^^^^^ | | | `val` escapes the function body here | argument requires that `'a` must outlive `'static` | note: the used `impl` has a `'static` requirement --> $DIR/impl-on-dyn-trait-with-implicit-static-bound.rs:15:32 | LL | impl MyTrait for dyn ObjectTrait { | ^^^^^^^^^^^^^^ this has an implicit `'static` lifetime requirement LL | fn use_self(&self) -> &() { panic!() } | -------- calling this method introduces the `impl`'s `'static` requirement help: consider relaxing the implicit `'static` requirement | LL | impl MyTrait for dyn ObjectTrait + '_ { | ++++ error[E0521]: borrowed data escapes outside of function --> $DIR/impl-on-dyn-trait-with-implicit-static-bound.rs:70:9 | LL | fn use_it<'a>(val: &'a dyn ObjectTrait) -> impl OtherTrait<'a> + 'a { | -- --- `val` is a reference that is only valid in the function body | | | lifetime `'a` defined here LL | val.use_self() | ^^^^^^^^^^^^^^ | | | `val` escapes the function body here | argument requires that `'a` must outlive `'static` | note: the used `impl` has a `'static` requirement --> $DIR/impl-on-dyn-trait-with-implicit-static-bound.rs:65:14 | LL | impl dyn ObjectTrait { | ^^^^^^^^^^^ this has an implicit `'static` lifetime requirement LL | fn use_self(&self) -> &() { panic!() } | -------- calling this method introduces the `impl`'s `'static` requirement help: consider relaxing the implicit `'static` requirement | LL | impl dyn ObjectTrait + '_ { | ++++ error[E0521]: borrowed data escapes outside of function --> $DIR/impl-on-dyn-trait-with-implicit-static-bound.rs:90:9 | LL | fn use_it<'a>(val: &'a dyn ObjectTrait) -> impl OtherTrait<'a> { | -- --- `val` is a reference that is only valid in the function body | | | lifetime `'a` defined here LL | val.use_self() | ^^^^^^^^^^^^^^ | | | `val` escapes the function body here | argument requires that `'a` must outlive `'static` | note: the used `impl` has a `'static` requirement --> $DIR/impl-on-dyn-trait-with-implicit-static-bound.rs:87:26 | LL | fn use_self(&self) -> &() { panic!() } | -------- calling this method introduces the `impl`'s `'static` requirement ... LL | impl MyTrait for dyn ObjectTrait {} | ^^^^^^^^^^^ this has an implicit `'static` lifetime requirement help: consider relaxing the implicit `'static` requirement | LL | impl MyTrait for dyn ObjectTrait + '_ {} | ++++ error[E0521]: borrowed data escapes outside of function --> $DIR/impl-on-dyn-trait-with-implicit-static-bound.rs:110:9 | LL | fn use_it<'a>(val: &'a dyn ObjectTrait) -> impl OtherTrait<'a> + 'a { | -- --- `val` is a reference that is only valid in the function body | | | lifetime `'a` defined here LL | MyTrait::use_self(val) | ^^^^^^^^^^^^^^^^^^^^^^ | | | `val` escapes the function body here | argument requires that `'a` must outlive `'static` | note: the used `impl` has a `'static` requirement --> $DIR/impl-on-dyn-trait-with-implicit-static-bound.rs:106:26 | LL | fn use_self(&self) -> &() { panic!() } | -------- calling this method introduces the `impl`'s `'static` requirement ... LL | impl MyTrait for dyn ObjectTrait {} | ^^^^^^^^^^^ this has an implicit `'static` lifetime requirement help: consider relaxing the implicit `'static` requirement | LL | impl MyTrait for dyn ObjectTrait + '_ {} | ++++ error: aborting due to 4 previous errors For more information about this error, try `rustc --explain E0521`.