Man pages matching name rustdoc in section 1:

rustdoc.1.en	debian 10 / rustc
rustdoc.1.en	debian 10 / rustc-mozilla
rustdoc.1.en	debian 11 / rustc
rustdoc.1.en	debian 11 / rustc-mozilla
rustdoc.1.en	debian 11 / rustc-web
rustdoc.1.en	debian 12 / rustc
rustdoc.1.en	debian 12 / rustc-web
rustdoc.1.en	debian 13 / rustc