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### What it does
It checks for `std::iter::Empty::default()` and suggests replacing it with
`std::iter::empty()`.
### Why is this bad?
`std::iter::empty()` is the more idiomatic way.
### Example
```
let _ = std::iter::Empty::<usize>::default();
let iter: std::iter::Empty<usize> = std::iter::Empty::default();
```
Use instead:
```
let _ = std::iter::empty::<usize>();
let iter: std::iter::Empty<usize> = std::iter::empty();
```
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