regression: error[E0277]: the trait bound `Box<dyn OptValueParse<'_>>: From<&mut [char]>` is not satisfied

[cuviper]

• https://crater-reports.s3.amazonaws.com/beta-1.84.0-4-retry2/beta-2024-12-08/reg/app-0.6.5/log.txt

[INFO] [stdout] error[E0277]: the trait bound `Box<dyn OptValueParse<'_>>: From<&mut [char]>` is not satisfied
[INFO] [stdout]    --> src/ovp.rs:513:23
[INFO] [stdout]     |
[INFO] [stdout] 513 |         OptValue::new(Box::from(self))
[INFO] [stdout]     |                       ^^^ the trait `From<&mut [char]>` is not implemented for `Box<dyn OptValueParse<'_>>`
[INFO] [stdout]     |
[INFO] [stdout]     = help: the following other types implement trait `From<T>`:
[INFO] [stdout]               `Box<CStr>` implements `From<&CStr>`
[INFO] [stdout]               `Box<CStr>` implements `From<&mut CStr>`
[INFO] [stdout]               `Box<CStr>` implements `From<CString>`
[INFO] [stdout]               `Box<CStr>` implements `From<Cow<'_, CStr>>`
[INFO] [stdout]               `Box<OsStr>` implements `From<&OsStr>`
[INFO] [stdout]               `Box<OsStr>` implements `From<&mut OsStr>`
[INFO] [stdout]               `Box<OsStr>` implements `From<Cow<'_, OsStr>>`
[INFO] [stdout]               `Box<OsStr>` implements `From<OsString>`
[INFO] [stdout]             and 23 others

... and many more errors with different From<_> types.

Version it worked on

It most recently worked on: 1.83.0

Version with regression

Using rustc 1.84.0-beta.4 in crater #134138.

@rustbot modify labels: +regression-from-stable-to-beta -regression-untriaged

[compiler-errors]

I bisected this to the rollup: 7028d93 / #132555.

I'm suspicious about this PR: #129329

[compiler-errors]

Funny enough, the implementation was changed after the crater run was performed (#129329 (comment)) so the crater results are kinda useless at that point.

@cuviper @Amanieu: Why wasn't another crater run performed after another impl was added? 🤔

[cuviper]

I didn't pay much attention myself after handing off to libs-api.

[Amanieu]

We discussed this in the libs-api meeting today. As there is only one broken crate and it hasn't been updated since 2018 we consider this to be acceptable breakage.