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