LL | let peekable = std::iter::empty::<u32>().peekable();
| ^^^^^^^^
|
- = note: `-D clippy::unused-peekable` implied by `-D warnings`
= help: consider removing the call to `peekable`
+ = note: `-D clippy::unused-peekable` implied by `-D warnings`
error: `peek` never called on `Peekable` iterator
--> $DIR/unused_peekable.rs:18:9