Rust

Better docs for `Sides` #12524

Job	Run time
Format + check + test	5m 22s
Check wasm32 + wasm-bindgen	2m 30s
android	20s
cargo-deny aarch64-apple-darwin	37s
ios	21s
Check Windows	1m 39s
cargo-deny aarch64-linux-android	38s
cargo-deny i686-pc-windows-gnu	36s
cargo-deny i686-pc-windows-msvc	41s
cargo-deny i686-unknown-linux-gnu	42s
cargo-deny wasm32-unknown-unknown	40s
cargo-deny x86_64-apple-darwin	40s
cargo-deny x86_64-pc-windows-gnu	38s
cargo-deny x86_64-pc-windows-msvc	41s
cargo-deny x86_64-unknown-linux-gnu	41s
cargo-deny x86_64-unknown-linux-musl	38s
cargo-deny x86_64-unknown-redox	40s
	18m 4s

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