error: you should not implement `visit_string` without also implementing `visit_str` --> $DIR/serde.rs:39:5 | 39 | / fn visit_string(self, _v: String) -> Result 40 | | where E: serde::de::Error, 41 | | { 42 | | unimplemented!() 43 | | } | |_____^ | = note: `-D serde-api-misuse` implied by `-D warnings`