})
	}

	// The loopclosure analyzer (aka "rangeloop" before CL 140578)
	// is a no-op for files whose version >= go1.22, so we use a
	// go.mod file in the rangeloop directory to "downgrade".
	//
	// TOOD(adonovan): delete when go1.21 goes away.
	t.Run("loopclosure", func(t *testing.T) {
		cmd := testenv.Command(t, testenv.GoToolPath(t), "vet", "-vettool="+vetPath(t), ".")
		cmd.Env = append(os.Environ(), "GOWORK=off")