Description

The ownership check for move closures is broken in Rust 2021 and 2024 editions, but works correctly in 2015 and 2018 editions.

Reproduction

#[derive(Debug)]
struct Point { x: i32, y: i32 }

fn main() {
    let mut a = Point { x: 1, y: 2 };
    let mut add = move |x, y| {
        a.x += x;
        a.y += y;
    };
    add(10, 10);
    println!("{:?}", a); // Should error but doesn't in 2021/2024
}

rustc 1.90.0 (1159e78c4 2025-09-14)
binary: rustc
commit-hash: 1159e78c43dd055665addee1ca6e30c4251b9b0a
commit-date: 2025-09-14
host: x86_64-pc-windows-msvc
release: 1.90.0

Expected behavior (as in 2015/2018 editions)
Compilation error E0382: borrow of moved value a

Actual behavior in 2021/2024 editions
Code compiles without error

Output: Point { x: 1, y: 2 } (closure has no effect)

Test results
✅ rustc --edition=2015 main.rs: Correct error

✅ rustc --edition=2018 main.rs: Correct error

❌ rustc --edition=2021 main.rs: Incorrectly compiles

❌ rustc --edition=2024 main.rs: Incorrectly compiles

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