error: `Err(_)` matches all errors
  --> $DIR/match_wild_err_arm.rs:14:9
   |
LL |         Err(_) => panic!("err"),
   |         ^^^^^^
   |
   = note: `-D clippy::match-wild-err-arm` implied by `-D warnings`
   = 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:20:9
   |
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:26:9
   |
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:34:9
   |
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