Nicholas Nethercote b7e18cabd2 De-genericize some IntoDiagnostic impls.
These impls are all needed for just a single `IntoDiagnostic` type, not
a family of them.

Note that `ErrorGuaranteed` is the default type parameter for
`IntoDiagnostic`.
2023-12-04 18:57:42 +11:00
..
2023-11-23 14:11:02 +03:00
2023-11-26 09:25:07 +08:00