Rust

smart copy patches #82

Job	Run time
test	58s
build (x86_64-pc-windows-msvc, windows-latest)	2m 34s
build (x86_64-apple-darwin, macos-latest)	1m 54s
build (aarch64-apple-darwin, macos-latest)	1m 44s
build (x86_64-unknown-linux-musl, ubuntu-latest)	1m 11s
	8m 21s

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