Rustc and clippy warnings generated by derive(FromRef)

[Garmelon]

• I have looked for existing issues (including closed) about this

Bug Report

Version

• axum v0.6.1
• axum-core v0.3.0
• axum-macros v0.3.0 (proc-macro)

Platform

Linux alpha 6.1.1 #1-NixOS SMP PREEMPT_DYNAMIC Wed Dec 21 16:48:12 UTC 2022 x86_64 GNU/Linux

Crates

axum-macros

Description

When deriving FromRef for &'static Something, the following lints are triggered by the generated code:

• clippy::clone_double_ref (deny by default)
• noop_method_call (allow by default)

I expect the generated code to cause no errors, possibly by suppressing the ones mentioned above.

Minimal example:

#![warn(noop_method_call)]

#[derive(axum::extract::FromRef)]
struct State {
    foo: &'static str,
}