clippy error when using uri! macro with a placeholder named as a local binding

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This code compiles and works perfectly fine:

use rocket::{get, uri};

#[get("/test/<x>")]
pub fn endpoint(x: i32) -> &'static str {
    let _x = x;
    "x"
}

fn main() {
    let x = 123;
    let query = uri!(endpoint(x = x));
    println!("{}", query)
}

Cargo.toml:

[package]
name = "dd"
version = "0.1.0"
edition = "2021"

[dependencies]
rocket = "0.5.0-rc"

But when I run cargo clippy, it fails with:

error: redundant redefinition of a binding
  --> src/main.rs:10:9
   |
10 |     let x = 123;
   |         ^
11 |     let query = uri!(endpoint(x = x));
   |                                   ^
   |
   = help: remove the redefinition of `x`
   = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#redundant_locals
   = note: `#[deny(clippy::redundant_locals)]` on by default

error: could not compile `dd` (bin "dd") due to previous error

And the error doesn't really seem to make sense. Renaming the x binding resolves the issue.

Could this be a bug in clippy, or is it a problem with the uri! macro? Or the code above, maybe?

Relevant info:

  • this lint redundant_locals was only introduced in 1.73, the problem did not exist in 1.72,
  • maybe rocket is at fault here (problem in the macro), but I would expect the clippy error to refer to the macro, not the caller.
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