Pointless suggestion for when pattern field is not mutable

[sunjay]

Rust Playground

struct Foo {
    items: Vec<i32>,
}

fn main() {
    let Foo {items} = &Foo {items: vec![]};
    items.push(12);
}

This produces the error:

error[E0596]: cannot borrow immutable borrowed content `*items` as mutable
 --> src/main.rs:7:5
  |
6 |     let Foo {items} = &Foo {items: vec![]};
  |              ----- consider changing this to `items`
7 |     items.push(12);
  |     ^^^^^ cannot borrow as mutable

The suggestion "consider changing this to items" is pointless in that it won't solve the problem.

[pnkfelix]

This is a dupe, probably of #51244. It is definitely fixed in beta and nightly. (i believe the fix was in PR #52242.)

[sunjay]

Thanks!