Rust

Bump version to 20.1.0 #4263

Job	Run time
build-and-test (ubuntu-latest, x86_64-unknown-linux-gnu)	5m 50s
fmt	6s
build-and-test (ubuntu-latest, aarch64-unknown-linux-gnu)	5m 2s
build-and-test (macos-latest, x86_64-apple-darwin)	19m 42s
build-and-test (macos-latest, aarch64-apple-darwin)	16m 35s
build-and-test (windows-latest-8-cores, x86_64-pc-windows-msvc)	8m 25s
rust-analyzer-compat	3m 2s
publish-dry-run (macos-latest, aarch64-apple-darwin, --feature-powerset) / publish-dry-run	23m 38s
publish-dry-run (macos-latest, x86_64-apple-darwin, --feature-powerset) / publish-dry-run	33m 57s
publish-dry-run (ubuntu-latest, aarch64-unknown-linux-gnu, --feature-powerset) / publish-dry-run	21m 22s
publish-dry-run (ubuntu-latest, x86_64-unknown-linux-gnu, --feature-powerset) / publish-dry-run	14m 24s
publish-dry-run (windows-latest-8-cores, x86_64-pc-windows-msvc, --features opt --ignore-unknown-... / publish-dry-run	9m 39s
publish-dry-run (windows-latest-8-cores, x86_64-pc-windows-msvc) / publish-dry-run	6m 56s
complete	1s
	2h 48m 39s

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