f2306f3729
Fix removed version numbers of `doc_auto_cfg` and `doc_cfg_hide`
Tracking issue: https://github.com/rust-lang/rust/issues/43781
The `doc_auto_cfg` and `doc_cfg_hide` features were removed in a recent nightly (by https://github.com/rust-lang/rust/pull/138907).
I believe that the rustc version numbers at which the features were declared to be removed were incorrect, however, and should both be "1.92" (±1). As evidence in favour of this, the error we get from using this was:
```text
error[E0557]: feature has been removed
--> src/lib.rs:22:29
|
22 | #![cfg_attr(docsrs, feature(doc_auto_cfg))]
| ^^^^^^^^^^^^ feature has been removed
|
= note: removed in 1.58.0; see <https://github.com/rust-lang/rust/pull/138907> for more information
= note: merged into `doc_cfg`
```
Note especially the "removed in 1.58" claim. Further evidence is found in the comment further up this file: 4ffeda10e1/compiler/rustc_feature/src/removed.rs (L49-L53)
I've chosen 1.92 as that was the milestone which https://github.com/rust-lang/rust/pull/138907 was added to.
cc `@GuillaumeGomez`
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