E0277 shows invalid help in closures

[MariaSolOs]

Code

trait Foo {}

fn print_foos(foos: impl Iterator<Item = dyn Foo>) {
    foos.for_each(|foo| {
        println("{:?}", foo);
    });
}

Current output

error[E0277]: the size for values of type `(dyn Foo + 'static)` cannot be known at compilation time
 --> crates/shebling-lexer/src/tests.rs:4:17
  |
4 |     v.for_each(|foo| {
  |                 ^^^ doesn't have a size known at compile-time
  |
  = help: the trait `Sized` is not implemented for `(dyn Foo + 'static)`
  = help: unsized fn params are gated as an unstable feature
help: you can use `impl Trait` as the argument type
  |
4 |     v.for_each(|impl foo| {
  |                 ++++
help: function arguments must have a statically known size, borrowed types always have a known size
  |
4 |     v.for_each(|&foo| {
  |                 +

Notice how the last 2 suggestions aren't valid in such a closure:

error[E0593]: closure is expected to take 1 argument, but it takes 2 arguments
 --> crates/shebling-lexer/src/tests.rs:4:7
  |
4 |     v.for_each(|impl foo| {
  |       ^^^^^^^^ ---------- takes 2 arguments
  |       |
  |       expected closure that takes 1 argument

error[E0308]: mismatched types
 --> crates/shebling-lexer/src/tests.rs:4:17
  |
4 |     v.for_each(|&foo| {
  |                 ^---
  |                 ||
  |                 |expected due to this
  |                 expected `dyn Foo`, found `&_`
  |
  = note: expected trait object `(dyn Foo + 'static)`
                found reference `&_`
help: consider removing `&` from the pattern
  |
4 -     v.for_each(|&foo| {
4 +     v.for_each(|foo| {
  |

Desired output

The suggestions given in help should help me get closer to fixing the error, or at least not have invalid syntax.

Rationale and extra context

No response

Other cases

No response

Anything else?

Output of rustc -V: rustc 1.71.0-nightly (2c41369ac 2023-05-13)

[jieyouxu]

(if println! is used in the snippet, #112007 comes up again with leaking implementation details)

note: required by a bound in `core::fmt::ArgumentV1::<'a>::new_debug`
   --> /home/jieyouxu/.rustup/toolchains/stable-x86_64-unknown-linux-gnu/lib/rustlib/src/rust/library/core/src/fmt/mod.rs:353:5
    |
353 |     arg_new!(new_debug, Debug);
    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^ required by this bound in `ArgumentV1::<'a>::new_debug`
    = note: this error originates in the macro `$crate::format_args_nl` which comes from the expansion of the macro `arg_new` (in Nightly builds, run with -Z macro-backtrace for more info)