error[E0309]: the parameter type `T` may not live long enough --> $DIR/regions-struct-not-wf.rs:13:5 | LL | impl<'a, T> Trait<'a, T> for usize { | - help: consider adding an explicit lifetime bound `T: 'a`... LL | type Out = &'a T; | ^^^^^^^^^^^^^^^^^ | note: ...so that the reference type `&'a T` does not outlive the data it points at --> $DIR/regions-struct-not-wf.rs:13:5 | LL | type Out = &'a T; | ^^^^^^^^^^^^^^^^^ error[E0309]: the parameter type `T` may not live long enough --> $DIR/regions-struct-not-wf.rs:21:5 | LL | impl<'a, T> Trait<'a, T> for u32 { | - help: consider adding an explicit lifetime bound `T: 'a`... LL | type Out = RefOk<'a, T>; | ^^^^^^^^^^^^^^^^^^^^^^^^ | note: ...so that the type `T` will meet its required lifetime bounds --> $DIR/regions-struct-not-wf.rs:21:5 | LL | type Out = RefOk<'a, T>; | ^^^^^^^^^^^^^^^^^^^^^^^^ error[E0491]: in type `&'a &'b T`, reference has a longer lifetime than the data it references --> $DIR/regions-struct-not-wf.rs:25:5 | LL | type Out = &'a &'b T; | ^^^^^^^^^^^^^^^^^^^^^ | note: the pointer is valid for the lifetime 'a as defined on the impl at 24:6 --> $DIR/regions-struct-not-wf.rs:24:6 | LL | impl<'a, 'b, T> Trait1<'a, 'b, T> for u32 { | ^^ note: but the referenced data is only valid for the lifetime 'b as defined on the impl at 24:10 --> $DIR/regions-struct-not-wf.rs:24:10 | LL | impl<'a, 'b, T> Trait1<'a, 'b, T> for u32 { | ^^ error: aborting due to 3 previous errors Some errors occurred: E0309, E0491. For more information about an error, try `rustc --explain E0309`.