Add missing symbols (#2883) #2813

Job	Run time
cargo +stable build	32s
cargo +beta build	45s
cargo +nightly build	34s
cargo hack check --feature-powerset	2m 21s
cargo bench	45s
cargo +1.36 build (futures-{core, io, sink})	1m 41s
cargo minimal-versions build	28s
cargo miri test	11m 31s
cargo build --target thumbv7m-none-eabi	30s
cargo test -Z sanitizer=address	2m 57s
cargo build --target thumbv6m-none-eabi	27s
cargo test -Z sanitizer=memory	3m 53s
cargo test (ubuntu-latest)	2m 39s
cargo +1.56 build	2m 13s
cargo test -Z sanitizer=thread	2m 25s
cargo test (macos-latest)	7m 0s
cargo test (windows-latest)	4m 59s
cargo clippy	24s
cargo test (ubuntu-latest, aarch64-unknown-linux-gnu)	3m 32s
cargo doc	21s
cargo test (ubuntu-latest, armv7-unknown-linux-gnueabihf)	6m 21s
cargo fmt	8s
cargo test (ubuntu-latest, armv5te-unknown-linux-gnueabi)	6m 56s
cargo test (ubuntu-latest, i686-unknown-linux-gnu)	3m 21s
	1h 6m 43s

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