Hmm apparently there is a cargo feature for it now: https://github.com/rust-lang/cargo/blob/master/src/doc/src/reference/unstable.md#rustdoc-map https://github.

Hmm apparently there is a cargo feature for it now: https://github.com/rust-lang/cargo/blob/master/src/doc/src/reference/unstable.md#rustdoc-map https://github.com/rust-lang/cargo/blob/master/src/doc/src/r... So something like this in .cargo/config: [doc.extern-map] std = "local" And then cargo +nightly doc -Zrustdoc-map.