`unnecessary_unwrap` doesn't work with `.as_ref().unwrap()` and `.as_mut().unwrap()`

[jakubdabek]

Summary

The lint should recognize Option::as_ref and Option::as_mut methods and suggest code with if let, matching on &foo/&mut foo, or alternatively with ref/ref mut in the pattern.

Lint Name

unnecessary_unwrap

Reproducer

I tried this code:

let a = Some(1);
if a.is_some() {
    let x = a.as_ref().unwrap();
    println!("{x}");
}

I expected to see this happen:

The lint would trigger and suggest the following code:

let a = Some(1);
if let Some(x) = &a {
    println!("{x}");
}

Instead, the lint didn't trigger.

Version

0.1.73 (2023-08-20 5c6a7e7) on playground