Sync with v0.8 branch #2518

Job	Run time
dependencies	20s
careful	5m 24s
clippy	19s
features (1.61)	32s
codegen	33s
features (nightly)	27s
loom	1m 0s
miri	20m 30s
rustfmt	11s
san	13m 44s
test (1.61, ubuntu-latest)	10m 51s
test (1.61, windows-latest)	15m 24s
shellcheck	9s
docs	12s
test (stable, ubuntu-latest)	9m 38s
test (stable, windows-latest)	14m 3s
test (nightly, ubuntu-latest)	9m 42s
test (nightly, windows-latest)	13m 41s
test (nightly, ubuntu-latest, i686-unknown-linux-gnu)	9m 52s
test (nightly, ubuntu-latest, armv7-unknown-linux-gnueabihf)	15m 39s
test (nightly, ubuntu-latest, armv5te-unknown-linux-gnueabi)	16m 4s
	2h 38m 15s

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