error[E0495]: cannot infer an appropriate lifetime for lifetime parameter `'a` due to conflicting requirements --> $DIR/regions-normalize-in-where-clause-list.rs:24:4 | LL | fn bar<'a, 'b>() | ^^^ | note: first, the lifetime cannot outlive the lifetime `'a` as defined here... --> $DIR/regions-normalize-in-where-clause-list.rs:24:8 | LL | fn bar<'a, 'b>() | ^^ note: ...but the lifetime must also be valid for the lifetime `'b` as defined here... --> $DIR/regions-normalize-in-where-clause-list.rs:24:12 | LL | fn bar<'a, 'b>() | ^^ note: ...so that the types are compatible --> $DIR/regions-normalize-in-where-clause-list.rs:24:4 | LL | fn bar<'a, 'b>() | ^^^ = note: expected `Project<'a, 'b>` found `Project<'_, '_>` error: aborting due to previous error For more information about this error, try `rustc --explain E0495`.