ci: Work around sanitizer-related regression #2864

Job	Run time
cargo +1.56 build	1m 11s
cargo test (ubuntu-latest)	2m 50s
cargo test (macos-latest)	5m 50s
cargo bench	48s
cargo +stable build	33s
cargo +1.36 build (futures-{core, io, sink})	33s
cargo test (windows-latest)	4m 44s
cargo +beta build	41s
cargo test (ubuntu-latest, aarch64-unknown-linux-gnu)	3m 41s
cargo +nightly build	35s
cargo hack check --feature-powerset	2m 24s
cargo test (ubuntu-latest, armv7-unknown-linux-gnueabihf)	6m 33s
cargo minimal-versions build	27s
cargo test (ubuntu-latest, armv5te-unknown-linux-gnueabi)	6m 53s
cargo miri test	12m 34s
cargo build --target thumbv7m-none-eabi	28s
cargo test (ubuntu-latest, i686-unknown-linux-gnu)	3m 32s
cargo build --target thumbv6m-none-eabi	26s
cargo clippy	25s
cargo doc	17s
cargo fmt	3s
cargo test -Z sanitizer=address	3m 32s
cargo test -Z sanitizer=memory	4m 58s
cargo test -Z sanitizer=thread	2m 29s
	1h 6m 27s

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