Merge pull request #282 from epage/deprecated #408

Job	Run time
Check MSRV (ubuntu-latest)	27s
Docs	17s
rustfmt	14s
Coverage	40s
Test (windows-latest, stable)	1m 7s
clippy	27s
lockfile	16s
Test (ubuntu-latest, stable)	1m 55s
Minimal versions (ubuntu-latest)	25s
Test (macos-latest, stable)	37s
CI	3s
	6m 28s

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