error: `Err(_)` matches all errors
  --> $DIR/match_wild_err_arm.rs:24:9
   |
LL |         Err(_) => panic!("err"),
   |         ^^^^^^
   |
   = note: match each error separately or use the error output, or use `.expect(msg)` if the error case is unreachable
   = note: `-D clippy::match-wild-err-arm` implied by `-D warnings`
   = help: to override `-D warnings` add `#[allow(clippy::match_wild_err_arm)]`

error: `Err(_)` matches all errors
  --> $DIR/match_wild_err_arm.rs:32:9
   |
LL |         Err(_) => panic!(),
   |         ^^^^^^
   |
   = note: match each error separately or use the error output, or use `.expect(msg)` if the error case is unreachable

error: `Err(_)` matches all errors
  --> $DIR/match_wild_err_arm.rs:40:9
   |
LL |         Err(_) => {
   |         ^^^^^^
   |
   = note: match each error separately or use the error output, or use `.expect(msg)` if the error case is unreachable

error: `Err(_e)` matches all errors
  --> $DIR/match_wild_err_arm.rs:50:9
   |
LL |         Err(_e) => panic!(),
   |         ^^^^^^^
   |
   = note: match each error separately or use the error output, or use `.expect(msg)` if the error case is unreachable

error: aborting due to 4 previous errors