`manual_let_else` recommends invalid syntax involving pair pattern binding

Description

The lint warning shows the form of the original code and the recommendation:

warning: this could be rewritten as `let...else`
   --> src/collision/mod.rs:694:9
    |
694 | /         let (object_pair, contact) = match constraint {
695 | |           contact@(_, constraint::Variant::Contact (_)) => contact,
696 | |           _ => continue
697 | |         };
    | |__________^ help: consider writing: `let (object_pair, contact) @ (_, constraint::Variant::Contact(_)) = constraint else { continue };`
    |
    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#manual_let_else
    = note: requested on the command line with `-W clippy::manual-let-else`

The recommended code results in the error:

error: left-hand side of `@` must be a binding
   --> src/collision/mod.rs:694:13
    |
694 |         let (object_pair, contact) @ (_, constraint::Variant::Contact(_)) = constraint else { continue };
    |             ----------------------^^^------------------------------------
    |             |                        |
    |             |                        also a pattern
    |             interpreted as a pattern, not a binding
    |
    = note: bindings are `x`, `mut x`, `ref x`, and `ref mut x`

I believe a correct refactor would be:

let (object_pair, contact@constraint::Variant::Contact(_)) = constraint else { continue };

Version

rustc 1.98.0-nightly (8b6558a02 2026-06-20)
binary: rustc
commit-hash: 8b6558a02b2774acfb25cf15e199467c37ba7490
commit-date: 2026-06-20
host: x86_64-unknown-linux-gnu
release: 1.98.0-nightly
LLVM version: 22.1.7

Additional Labels

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