Various fixes too make the CI green #2806

Job	Run time
cargo minimal-versions build	27s
cargo +1.36 build (futures-{core, io, sink})	1m 31s
cargo +stable build	42s
cargo test (ubuntu-latest)	2m 44s
cargo +beta build	37s
cargo +1.56 build	2m 6s
cargo test (macos-latest)	6m 32s
cargo +nightly build	37s
cargo bench	46s
cargo test (windows-latest)	4m 55s
cargo clippy	26s
cargo test (ubuntu-latest, aarch64-unknown-linux-gnu)	3m 26s
cargo doc	17s
cargo hack check --feature-powerset	2m 20s
cargo test (ubuntu-latest, armv7-unknown-linux-gnueabihf)	6m 34s
cargo fmt	5s
cargo test (ubuntu-latest, armv5te-unknown-linux-gnueabi)	6m 54s
cargo miri test	9m 42s
cargo test (ubuntu-latest, i686-unknown-linux-gnu)	3m 25s
cargo build --target thumbv7m-none-eabi	25s
cargo build --target thumbv6m-none-eabi	26s
cargo test -Z sanitizer=address	2m 56s
cargo test -Z sanitizer=memory	3m 49s
cargo test -Z sanitizer=thread	2m 24s
	1h 4m 6s

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