【Rust】cargo doc でエラーが起きた話

Cargo doc したらエラー起きた

$ cargo doc
 Documenting pin-utils v0.1.0
 Documenting serde v1.0.123
 Documenting rocket_codegen v0.4.7
error[E0658]: linking to associated items of raw pointers is experimental
   |
   = note: see issue #80896 <https://github.com/rust-lang/rust/issues/80896> for more information
   = help: add `#![feature(intra_doc_pointers)]` to the crate attributes to enable
   = note: rustdoc does not allow disambiguating between `*const` and `*mut`, and pointers are unstable until it does

error: aborting due to previous error

For more information about this error, try `rustc --explain E0658`.
error: could not document `pin-utils`

Caused by:
  process didnt exit successfully: `rustdoc --edition=2018 --crate-type lib --crate-name pin_utils /Users/macuser/.cargo/registry/src/github.com-1ecc6299db9ec823/pin-utils-0.1.0/src/lib.rs --cap-lints allow -o /Users/macuser/xxxxxxxxxxx/target/doc --error-format=json --json=diagnostic-rendered-ansi -L dependency=/Users/macuser/line-bot-sdk-rust/target/debug/deps --crate-version 0.1.0` (exit code: 1)
warning: build failed, waiting for other jobs to finish...
error[E0658]: linking to associated items of raw pointers is experimental
   |
   = note: see issue #80896 <https://github.com/rust-lang/rust/issues/80896> for more information
   = help: add `#![feature(intra_doc_pointers)]` to the crate attributes to enable
   = note: rustdoc does not allow disambiguating between `*const` and `*mut`, and pointers are unstable until it does

error: aborting due to previous error

For more information about this error, try `rustc --explain E0658`.
error: build failed

どうやらpin-utilsって依存モジュールの doc 作成でエラってるっぽい。

cargo doc の公式ドキュメントを見てみる。
https://doc.rust-lang.org/cargo/commands/cargo-doc.html

OPTIONS

Documentation Options

--open
Open the docs in a browser after building them. This will use your default browser unless you define another one in the BROWSER environment variable.

--no-deps
Do not build documentation for dependencies.

--document-private-items
Include non-public items in the documentation.

依存モジュール実行しないってオプションあるやん。
なので、こうする。

$ cargo doc --no-deps
Finished dev [unoptimized + debuginfo] target(s) in 0.89s

おっけい。