Missing source links in std::iter::Iterator docs

[qrilka]

I was looking into https://doc.rust-lang.org/std/iter/trait.Iterator.html trying to find source code for the zip method

I expected to see "src" with a link to the function source code.

Instead, there appear to be no such link and other methods (even next!) of this trait also lack source code links.

[ThePuzzlemaker]

This appears to have been fixed in nightly. (see https://doc.rust-lang.org/nightly/std/iter/trait.Iterator.html, the nightly docs for std::iter::Iterator).

[qrilka]

Then probably this could be closed, one thing though is to find the reason that happened and have some measures against it reintroduced again.

[GuillaumeGomez]

It'd require to add a test to prevent the regression (in src/test/rustdoc). I'll mark the issue as E-medium because it might require to extend those tests to be able to check directly on std docs.

[Stupremee]

Is there a reason this issue is still open? Since this seems to be fixed already

[GuillaumeGomez]

We still need to add a test to ensure that the [src] link is present, I'll do that so we can close it.