never type appears in duplicate diagnostics

[mejrs]

Code

const fn foo() -> Option<()> { None?; None }

Current output

error[E0015]: `?` is not allowed on `Option<!>` in constant functions
 --> src/lib.rs:1:32
  |
1 | const fn foo() -> Option<()> { None?; None }
  |                                ^^^^^
  |
  = note: calls in constant functions are limited to constant functions, tuple structs and tuple variants

error[E0015]: `?` is not allowed on `Option<()>` in constant functions
 --> src/lib.rs:1:32
  |
1 | const fn foo() -> Option<()> { None?; None }
  |                                ^^^^^
  |
  = note: calls in constant functions are limited to constant functions, tuple structs and tuple variants

For more information about this error, try `rustc --explain E0015`.
error: could not compile `playground` (lib) due to 2 previous errors

Desired output

Minus the diagnostic about `Option<!>`

Rationale and extra context

This only happens on edition 2024.

Other cases

Rust Version

edition 2024

Anything else?

https://play.rust-lang.org/?version=stable&mode=debug&edition=2024&gist=44414f7fe4f727ef3120e30015bfdd28

[chenyukang]

it's not exactly duplicated, the first is

not allowed on `Option<!>`

the second is:

not allowed on `Option<()>`

Except for the type message is different, all the other part of words is same, because these two slug are same:

rust/compiler/rustc_const_eval/messages.ftl

Lines 274 to 278 in 9f8929f

	const_eval_non_const_question_branch =
	`?` is not allowed on `{$ty}` in {const_eval_const_context}s
	const_eval_non_const_question_from_residual =
	`?` is not allowed on `{$ty}` in {const_eval_const_context}s