error: using `as _` conversion
  --> $DIR/as_underscore.rs:9:9
   |
LL |     foo(n as _);
   |         ^^^^^-
   |              |
   |              help: consider giving the type explicitly: `usize`
   |
   = note: `-D clippy::as-underscore` implied by `-D warnings`

error: using `as _` conversion
  --> $DIR/as_underscore.rs:12:18
   |
LL |     let _n: u8 = n as _;
   |                  ^^^^^-
   |                       |
   |                       help: consider giving the type explicitly: `u8`

error: aborting due to 2 previous errors