CI & style Cleanups #3447

Job	Run time
cargo +nightly build	35s
cargo +1.71 build	36s
cargo +beta build	35s
cargo test (ubuntu-24.04-arm)	2m 48s
cargo +1.36 build (futures-{core, io, sink})	2m 17s
cargo build --target thumbv7m-none-eabi	28s
cargo test -Z sanitizer=address	1m 9s
cargo +stable build	36s
cargo test (ubuntu-latest, armv5te-unknown-linux-gnueabi)	6m 13s
tidy	17s
cargo test (windows-latest)	5m 44s
cargo test (ubuntu-latest, i686-unknown-linux-gnu)	3m 26s
cargo test (ubuntu-24.04-arm, armv7-unknown-linux-gnueabihf)	3m 5s
cargo hack check --feature-powerset	2m 39s
cargo test (macos-latest)	4m 34s
clippy / clippy	25s
cargo bench	47s
cargo test -Z sanitizer=memory	1m 12s
docs / docs	21s
cargo build --target thumbv6m-none-eabi	25s
cargo miri test	11m 29s
cargo minimal-versions build	29s
cargo test -Z sanitizer=thread	1m 4s
cargo test (ubuntu-latest, s390x-unknown-linux-gnu)	4m 35s
cargo test (ubuntu-latest)	2m 55s
	58m 44s

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