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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