CI #2847

Job	Run time
cargo +stable build	41s
cargo +beta build	38s
cargo minimal-versions build	24s
cargo +nightly build	35s
cargo +1.36 build (futures-{core, io, sink})	36s
cargo test (ubuntu-latest)	5m 6s
cargo test (macos-latest)	5m 41s
cargo +1.56 build	1m 4s
cargo bench	52s
cargo test (windows-latest)	4m 55s
cargo test (ubuntu-latest, aarch64-unknown-linux-gnu)	3m 43s
cargo clippy	25s
cargo doc	20s
cargo test (ubuntu-latest, armv7-unknown-linux-gnueabihf)	7m 25s
cargo hack check --feature-powerset	2m 22s
cargo fmt	12s
cargo test (ubuntu-latest, armv5te-unknown-linux-gnueabi)	7m 17s
cargo test (ubuntu-latest, i686-unknown-linux-gnu)	3m 51s
cargo miri test	12m 42s
cargo build --target thumbv7m-none-eabi	29s
cargo build --target thumbv6m-none-eabi	26s
cargo test -Z sanitizer=address	3m 19s
cargo test -Z sanitizer=memory	4m 58s
cargo test -Z sanitizer=thread	2m 22s
	1h 10m 23s

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