[missing_const_for_fn] does not take into account whether receiver is ~const Destruct

[KisaragiEffective]

Summary

missing_const_for_fn does not taike into account whether receiver is ~const Destruct.

Lint Name

missing_const_for_fn

Reproducer

I tried this code:

#![warn(clippy::missing_const_for_fn)]

pub struct Identifier(String);

impl Identifier {
    #[must_use = "If you don't use it, it will drop entire String"]
    pub fn name(self) -> String {
        self.0
    }
}

I saw this happen:

warning: this could be a `const fn`
 --> src/lib.rs:7:5
  |
7 | /     pub fn name(self) -> String {
8 | |         self.0
9 | |     }
  | |_____^
  |
  = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#missing_const_for_fn

I expected to the lint does not fire.

Version

rustc 1.70.0-nightly (1459b3128 2023-03-23)
binary: rustc
commit-hash: 1459b3128e288a85fcc4dd1fee7ada2cdcf28794
commit-date: 2023-03-23
host: x86_64-unknown-linux-gnu
release: 1.70.0-nightly
LLVM version: 15.0.7

Additional Labels

No response

[KisaragiEffective]

@rustbot label +I-suggestion-causes-error