Run tests

Add `is_nothing` alias #3418

Sign in to view logs

Run time

Learn about OS pricing on GitHub Actions

Job	Run time
Documentation	15m 40s
test (1.6, ubuntu-latest)	16m 53s
test (1.9, ubuntu-latest)	16m 11s
test (1.10, ubuntu-latest)	30m 36s
test (1.11-nightly, ubuntu-latest)	21m 47s
test (nightly, ubuntu-latest)	1m 55s
test (1.10, macOS-latest)	40m 54s
test (1.10, windows-latest)	39m 7s
	3h 3m 3s