Test

Add `SetExtLinux#wait_until` #308

Job	Run time
rustfmt	17s
semver	26s
clippy (macos-latest, stable)	51s
clippy (macos-latest, 1.61)	37s
clippy (windows-latest, stable)	48s
clippy (windows-latest, 1.61)	51s
clippy (ubuntu-latest, stable)	32s
clippy (ubuntu-latest, 1.61)	24s
test (macos-latest)	1m 6s
miri (windows-latest)	1m 0s
test (windows-latest)	56s
	7m 48s

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