error: `map_err(|_|...` wildcard pattern discards the original error --> $DIR/map_err.rs:22:32 | LL | println!("{:?}", x.map_err(|_| Errors::Ignored)); | ^^^ | = note: `-D clippy::map-err-ignore` implied by `-D warnings` = help: consider storing the original error as a source in the new error, or silence this warning using an ignored identifier (`.map_err(|_foo| ...`) error: aborting due to previous error