error[E0491]: in type `&'a WithAssoc>`, reference has a longer lifetime than the data it references --> $DIR/regions-assoc-type-in-supertrait-outlives-container.rs:39:12 | LL | let _: &'a WithAssoc> = loop { }; | ^^^^^^^^^^^^^^^^^^^^^^^^^^ | note: the pointer is valid for the lifetime `'a` as defined on the function body at 33:15 --> $DIR/regions-assoc-type-in-supertrait-outlives-container.rs:33:15 | LL | fn with_assoc<'a,'b>() { | ^^ note: but the referenced data is only valid for the lifetime `'b` as defined on the function body at 33:18 --> $DIR/regions-assoc-type-in-supertrait-outlives-container.rs:33:18 | LL | fn with_assoc<'a,'b>() { | ^^ error: aborting due to previous error For more information about this error, try `rustc --explain E0491`.