rustdoc should link to its current version of the rustdoc book

[lolbinarycat]

currently, rustdoc just links to https://doc.rust-lang.org/rustdoc/

this could lead to confusion for old crates on docs.rs when someone tries to use a new feature and it doesn't work.

perhaps, rustdoc 1.80.1 should link to https://doc.rust-lang.org/1.80.1/rustdoc/ and other versions should link to their matching documentation...

[fmease]

rustdoc just links to […]

I assume you're referring to the first paragraph of the help dropdown?

You can find more information in the rustdoc book.

[lolbinarycat]

yes

[poliorcetics]

Wasn't it already done a while ago: 2f1939a ?

EDIT: It was only partially done, it hasn't been updated everywhere

[poliorcetics]

@rustbot claim

[camelid]

The linked PR somewhat addresses this, though because docs.rs uses nightly rustdoc, all the doc.rust-lang.org links will be /nightly/... rather than a specific version. However, there's not really anything more we can do from the linking side of things because nightly versions are (of course) unstable and not finalized and thus aren't posted under their version number on doc.rust-lang.org. I don't think this is a particularly big issue though, so it seems reasonable to me to consider this resolved with the PR.