error: matching over `()` is more explicit
  --> $DIR/ignored_unit_patterns.rs:10:12
   |
LL |         Ok(_) => {},
   |            ^ help: use `()` instead of `_`: `()`
   |
   = note: `-D clippy::ignored-unit-patterns` implied by `-D warnings`
   = help: to override `-D warnings` add `#[allow(clippy::ignored_unit_patterns)]`

error: matching over `()` is more explicit
  --> $DIR/ignored_unit_patterns.rs:11:13
   |
LL |         Err(_) => {},
   |             ^ help: use `()` instead of `_`: `()`

error: matching over `()` is more explicit
  --> $DIR/ignored_unit_patterns.rs:13:15
   |
LL |     if let Ok(_) = foo() {}
   |               ^ help: use `()` instead of `_`: `()`

error: matching over `()` is more explicit
  --> $DIR/ignored_unit_patterns.rs:14:28
   |
LL |     let _ = foo().map_err(|_| todo!());
   |                            ^ help: use `()` instead of `_`: `()`

error: aborting due to 4 previous errors