rustdoc: Invalid automatic link

[Hywan]

I open https://docs.rs/smol/latest/smol/stream/struct.Map.html.
I see a link to StreamExt::map(), which is an auto-intra-link, see the source code:

pin_project! {
    /// Stream for the [`StreamExt::map()`] method.
    #[derive(Clone, Debug)]
    #[must_use = "streams do nothing unless polled"]
    pub struct Map<S, F> {
        #[pin]
        stream: S,
        f: F,
    }
}

rustdoc computes it as a link to …/prelude/trait._.html#method.map, which is incorrect.

As agreed with @GuillaumeGomez, I'm opening this bug to track it 🐛.

[poliorcetics]

Mostly minimalized repro (still depends on futures-lite but I have to go to sleep now and I couldn't get it to work with local crates in the same workspace, maybe two workspace would work ?)

Looks at the docs for ./target/doc/rustdoc_repro_142456/stream/struct.Map.html, the link to StreamExt::map() is wrong, it points to doc/rustdoc_repro_142456/prelude/trait._.html#method.map.

[package]
name = "rustdoc-repro-142456"
version = "0.1.0"
edition = "2024" # Also tested with "2018", it's also affected

[dependencies]
futures-lite = "2.0.0"

// src/lib.rs

#[doc(inline)]
pub use futures_lite::{prelude, stream};    // BUG
// pub use futures_lite::{prelude, stream}; // no bug (`io` is a module)
// pub use futures_lite::{ready, stream};   // no bug (`ready!` is a macro)

cargo +stable doc --open  # rustdoc 1.87.0 (17067e9ac 2025-05-09)
cargo +nightly doc --open # rustdoc 1.89.0-nightly (586ad391f 2025-06-15)

Both stable and latest nightly (when I wrote this) reproduce the bug