Misleading diagnostic for error[E0277]

[jjl9807]

Code

enum Foo<T> {
    Bar {
        v23: T,
        y: isize
    }
}

fn f(x: &Foo) {
    match *x {
        Foo::Bar { y: y, v23: x } => {
            assert_eq!(x, 1);
            assert_eq!(y, 2);
        }
    }
}

pub fn main() {
    let x = Foo::Bar { x: 1, y: 2 };
    f(&x);
}

Current output

error[E0107]: missing generics for enum `Foo`
  --> test.rs:11:10
   |
11 | fn f(x: &Foo) {
   |          ^^^ expected 1 generic argument
   |
note: enum defined here, with 1 generic parameter: `T`
  --> test.rs:4:6
   |
4  | enum Foo<T> {
   |      ^^^ -
help: add missing generic argument
   |
11 | fn f(x: &Foo<T>) {
   |             +++

error[E0277]: can't compare `&isize` with `{integer}`
  --> test.rs:15:13
   |
15 |             assert_eq!(y, 2);
   |             ^^^^^^^^^^^^^^^^ no implementation for `&isize == {integer}`
   |
   = help: the trait `PartialEq<{integer}>` is not implemented for `&isize`
   = note: this error originates in the macro `assert_eq` (in Nightly builds, run with -Z macro-backtrace for more info)
help: consider dereferencing here
  --> /home/jl-jiang/.rustup/toolchains/nightly-x86_64-unknown-linux-gnu/lib/rustlib/src/rust/library/core/src/macros/mod.rs:46:22
   |
46 |                 if !(**left_val == *right_val) {
   |                      +

error[E0559]: variant `Foo<_>::Bar` has no field named `x`
  --> test.rs:21:24
   |
21 |     let x = Foo::Bar { x: 1, y: 2 };
   |                        ^ `Foo<_>::Bar` does not have this field
   |
   = note: available fields are: `v23`

error: aborting due to 3 previous errors

Some errors have detailed explanations: E0107, E0277, E0559.
For more information about an error, try `rustc --explain E0107`.

Desired output

Rationale and extra context

I'm not entirely sure what the compiler's output should be, but it is inappropriate to suggest modifying the standard library when the issue lies in the user code. This suggestion is clearly flawed.

Other cases

Rust Version

rustc 1.88.0-nightly (e2014e876 2025-04-01)
binary: rustc
commit-hash: e2014e876e3efaa69bf51c19579adb16c3df5f81
commit-date: 2025-04-01
host: x86_64-unknown-linux-gnu
release: 1.88.0-nightly
LLVM version: 20.1.1

Anything else?

No response