Preparation for Rust 1.80. #642

Job	Run time
incremental-mutants	24s
build (ubuntu, stable, locked, true)	12m 45s
deny	44s
miri	1m 41s
build (windows, stable, locked, false)	25m 4s
build (macos, stable, locked, false)	11m 31s
no_std	30s
build (ubuntu, nightly, locked, false)	12m 35s
build (ubuntu, beta, locked, false)	14m 38s
build (ubuntu, stable, latest, false)	16m 38s
build (ubuntu, stable, minimal, false)	1m 10s
features	28m 22s
fuzz	15m 42s
deploy	0s
	2h 21m 44s

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