Rust

Implement BLS12-381 `contracttype` support #4715

Job	Run time
cargo-deny (advisories)	41s
fmt	6s
cargo-deny (bans licenses sources)	39s
docs	2m 2s
build-fuzz	34s
semver-checks	5m 57s
migration-docs	8s
publish-dry-run	0s
check-git-rev-deps	6s
readme	39s
build-and-test (msrv, ubuntu-latest, x86_64-unknown-linux-gnu)	4m 28s
build-and-test (msrv, windows-latest, x86_64-pc-windows-msvc)	15m 24s
build-and-test (msrv, ubuntu-latest, aarch64-unknown-linux-gnu, true)	2m 2s
build-and-test (latest, ubuntu-latest, x86_64-unknown-linux-gnu)	4m 19s
build-and-test (latest, ubuntu-latest, aarch64-unknown-linux-gnu, true)	1m 49s
build-and-test (latest, windows-latest, x86_64-pc-windows-msvc)	15m 22s
complete	3s
	54m 19s

Provide feedback