Man pages matching name cargo-rustdoc in section 1:

cargo-rustdoc.1.en	debian 10 / cargo
cargo-rustdoc.1.en	debian 10 / cargo-mozilla
cargo-rustdoc.1.en	debian 11 / cargo
cargo-rustdoc.1.en	debian 11 / cargo-mozilla
cargo-rustdoc.1.en	debian 12 / cargo