cargo doc rustdoc-scrape-examples failure

[huang12zheng]

Problem

I found there are two cases, scrape example is not working:

1. Required Methods

pub trait ITrait {
    fn it(&self);  // <<<< This Required Methods wouldn't scrape the example
    fn it2(&self) {
        self.it();
    }
    fn it3(&self) {}
}

I don't see it in RFC3123,So this may be a supplementary form
I didn't see such information in rust-lang/rust#88791 either

2. with #[test] macro
   Something to do with this: Add --scrape-tests option to rustdoc to scrape functions marked #[test] rust#93497
   My guess is that rustdoc supports this functionality, but Cargo doesn't.

I tried a few things:

RUSTDOCFLAGS="-Zunstable-options --scrape-tests" cargo doc -Zunstable-options -Zrustdoc-scrape-examples=all --open --document-private-items

cargo doc -Zunstable-options -Zrustdoc-scrape-examples=all --open --document-private-items `-- --scrape-tests`

But it doesn't work

Proposed Solution

No response

Notes

No response

[willcrichton]

Thanks for the report. If trait method aren't being scraped, that's an issue within Rustdoc and not Cargo, so I will open an issue over there once I confirm.

We are still figuring out how to manage tests within Cargo. The functionality is there, but there's tricky issues around dev-dependencies as described in #10343.