### What it does
Checks for usage of `_.map(_).collect::<Result<(), _>()`.

### Why is this bad?
Using `try_for_each` instead is more readable and idiomatic.

### Example
```
(0..3).map(|t| Err(t)).collect::<Result<(), _>>();
```
Use instead:
```
(0..3).try_for_each(|t| Err(t));
```