// better to hard-code a scale factor than to hard-code a constant delay.
		if wd := testTimeout / 10; wd < 5*time.Second {
			testWaitDelay = 5 * time.Second
		} else {
			testWaitDelay = wd
		}

		// We expect the test binary to terminate itself (and dump stacks) after
		// exactly testTimeout. We give it up to one WaitDelay or one minute,