root.mu.Lock()
				root.duration += highPrecisionTimeSince(root.start)
				d := root.duration
				root.mu.Unlock()
				root.flushToParent(root.name, "--- FAIL: %s (%s)\n", root.name, fmtDuration(d))
			}
			didPanic = true
			panic(err)
		}
		if err != nil {
			doPanic(err)
		}

		// No panic or inappropriate Goexit.
		f.duration += highPrecisionTimeSince(f.start)

		if len(f.sub) > 0 {

// StopTimer stops timing a test. This can be used to pause the timer
// while performing complex initialization that you don't
// want to measure.
func (b *B) StopTimer() {
	if b.timerOn {
		b.duration += highPrecisionTimeSince(b.start)
		runtime.ReadMemStats(&memStats)
		b.netAllocs += memStats.Mallocs - b.startAllocs
		b.netBytes += memStats.TotalAlloc - b.startBytes
		b.timerOn = false
	}
}