error: unused "map closure" when calling `Result::map_or_else` value
  --> $DIR/unnecessary_result_map_or_else.rs:6:5
   |
LL |     x.map_or_else(|err| err, |n| n);
   |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: consider using `unwrap_or_else`: `x.unwrap_or_else(|err| err)`
   |
   = note: `-D clippy::unnecessary-result-map-or-else` implied by `-D warnings`
   = help: to override `-D warnings` add `#[allow(clippy::unnecessary_result_map_or_else)]`

error: unused "map closure" when calling `Result::map_or_else` value
  --> $DIR/unnecessary_result_map_or_else.rs:10:5
   |
LL |     x.map_or_else(|err: ()| err, |n: ()| n);
   |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: consider using `unwrap_or_else`: `x.unwrap_or_else(|err: ()| err)`

error: unused "map closure" when calling `Result::map_or_else` value
  --> $DIR/unnecessary_result_map_or_else.rs:15:19
   |
LL |     let y: &str = x.map_or_else(|err| err, |n| n);
   |                   ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: consider using `unwrap_or_else`: `x.unwrap_or_else(|err| err)`

error: unused "map closure" when calling `Result::map_or_else` value
  --> $DIR/unnecessary_result_map_or_else.rs:19:5
   |
LL | /     x.map_or_else(
LL | |
LL | |         |err| err,
LL | |         |n| {
...  |
LL | |         },
LL | |     );
   | |_____^ help: consider using `unwrap_or_else`: `x.unwrap_or_else(|err| err)`

error: aborting due to 4 previous errors