error: used `expect()` on an `Option` value
  --> $DIR/expect_used.rs:7:13
   |
LL |     let _ = opt.expect("");
   |             ^^^^^^^^^^^^^^
   |
   = help: if this value is `None`, it will panic
   = note: `-D clippy::expect-used` implied by `-D warnings`

error: used `expect()` on a `Result` value
  --> $DIR/expect_used.rs:12:13
   |
LL |     let _ = res.expect("");
   |             ^^^^^^^^^^^^^^
   |
   = help: if this value is an `Err`, it will panic

error: aborting due to 2 previous errors