error[E0106]: missing lifetime specifier --> $DIR/rfc1623.rs:8:42 | LL | static NON_ELIDABLE_FN: &fn(&u8, &u8) -> &u8 = | ^ expected lifetime parameter | = help: this function's return type contains a borrowed value, but the signature does not say whether it is borrowed from argument 1 or argument 2 error[E0106]: missing lifetime specifier --> $DIR/rfc1623.rs:10:39 | LL | &(non_elidable as fn(&u8, &u8) -> &u8); | ^ expected lifetime parameter | = help: this function's return type contains a borrowed value, but the signature does not say whether it is borrowed from argument 1 or argument 2 error: aborting due to 2 previous errors For more information about this error, try `rustc --explain E0106`.