Mutating through Option::inspect gives bogus suggestion

[Swatinem]

Code

#[derive(Debug)]
struct A {
    a: u32,
}

fn main() {
    let mut opt = Some(A { a: 123 });
    let ref_mut_opt = opt.as_mut().inspect(|a| {
        a.a += 123;
    });
    dbg!(ref_mut_opt);
}

Current output

error[E0594]: cannot assign to `a.a`, which is behind a `&` reference
  --> src/main.rs:18:9
   |
17 |     let ref_mut_opt = opt.as_mut().inspect(|a| {
   |                                             - consider changing this binding's type to be: `&mut &mut A`
18 |         a.a += 123;
   |         ^^^^^^^^^^ `a` is a `&` reference, so the data it refers to cannot be written

Desired output

No response

Rationale and extra context

The compiler suggests to "consider changing this binding's type". But Option::inspect is outside my control, and it will give me a & &mut A. There is nothing for me to change there.

Here is a playground link: https://play.rust-lang.org/?version=nightly&mode=debug&edition=2021&gist=f54e1ae60f8e1a790c6a6379afe746fa

The code comes from a broken clippy suggestion which I also raised here: rust-lang/rust-clippy#13185

Other cases

No response

Rust Version

rustc 1.82.0-nightly (7120fdac7 2024-07-25)
binary: rustc
commit-hash: 7120fdac7a6e55a5e4b606256042890b36067052
commit-date: 2024-07-25
host: x86_64-apple-darwin
release: 1.82.0-nightly
LLVM version: 18.1.7

Anything else?

No response