return
	}

	// We don't want to include the time we spend waiting for serial tests
	// in the test duration. Record the elapsed time thus far and reset the
	// timer afterwards.
	t.duration += highPrecisionTimeSince(t.start)

	// Add to the list of tests to be released by the parent.
	t.parent.sub = append(t.parent.sub, t)

	// Report any races during execution of this test up to this point.
	//