### What it does
Checks for loops on `y.into_iter()` where `y` will do, and
suggests the latter.
### Why is this bad?
Readability.
### Example
```
// with `y` a `Vec` or slice:
for x in y.into_iter() {
// ..
}
```
can be rewritten to
```
for x in y {
// ..
}
```