error: matching over `()` is more explicit
  --> $DIR/ignored_unit_patterns.rs:12:12
   |
LL |         Ok(_) => {},
   |            ^ help: use `()` instead of `_`: `()`
   |
   = note: `-D clippy::ignored-unit-patterns` implied by `-D warnings`

error: matching over `()` is more explicit
  --> $DIR/ignored_unit_patterns.rs:13:13
   |
LL |         Err(_) => {},
   |             ^ help: use `()` instead of `_`: `()`

error: matching over `()` is more explicit
  --> $DIR/ignored_unit_patterns.rs:15:15
   |
LL |     if let Ok(_) = foo() {}
   |               ^ help: use `()` instead of `_`: `()`

error: matching over `()` is more explicit
  --> $DIR/ignored_unit_patterns.rs:16:28
   |
LL |     let _ = foo().map_err(|_| todo!());
   |                            ^ help: use `()` instead of `_`: `()`

error: aborting due to 4 previous errors