Rust

Implement BLS12-381 `contracttype` support #4710

Job	Run time
check-git-rev-deps	7s
cargo-deny (bans licenses sources)	41s
fmt	7s
cargo-deny (advisories)	45s
semver-checks	6m 2s
build-fuzz	1m 20s
publish-dry-run	0s
docs	2m 41s
readme	1m 12s
build-and-test (msrv, ubuntu-latest, x86_64-unknown-linux-gnu)	4m 25s
build-and-test (msrv, ubuntu-latest, aarch64-unknown-linux-gnu, true)	2m 21s
migration-docs	13s
build-and-test (msrv, windows-latest, x86_64-pc-windows-msvc)	8m 38s
build-and-test (latest, windows-latest, x86_64-pc-windows-msvc)	8m 38s
build-and-test (latest, ubuntu-latest, aarch64-unknown-linux-gnu, true)	2m 1s
build-and-test (latest, ubuntu-latest, x86_64-unknown-linux-gnu)	4m 53s
complete	2s
	44m 6s

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