error[E0621]: explicit lifetime required in the type of `p` --> $DIR/regions-infer-at-fn-not-param.rs:13:57 | LL | fn take1<'a>(p: Parameterized1) -> Parameterized1<'a> { p } | -------------- ^ lifetime `'a` required | | | help: add explicit lifetime `'a` to the type of `p`: `Parameterized1<'a>` error: aborting due to 1 previous error For more information about this error, try `rustc --explain E0621`.