Rust

Replace once_cell by std::sync::OnceLock #124

Job	Run time
Check wasm32 + wasm-bindgen	3m 25s
android	33s
cargo-deny aarch64-apple-darwin	39s
ios	30s
Check Windows	2m 29s
Format + check + test	6m 1s
cargo-deny aarch64-linux-android	40s
cargo-deny i686-pc-windows-gnu	37s
cargo-deny i686-pc-windows-msvc	39s
cargo-deny i686-unknown-linux-gnu	40s
cargo-deny wasm32-unknown-unknown	38s
cargo-deny x86_64-apple-darwin	41s
cargo-deny x86_64-pc-windows-gnu	38s
cargo-deny x86_64-pc-windows-msvc	39s
cargo-deny x86_64-unknown-linux-gnu	39s
cargo-deny x86_64-unknown-linux-musl	38s
cargo-deny x86_64-unknown-redox	40s
	20m 46s

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