}()

	// Run the benchmark for at least the specified amount of time.
	if b.benchTime.n > 0 {
		// We already ran a single iteration in run1.
		// If -benchtime=1x was requested, use that result.
		// See https://golang.org/issue/32051.
		if b.benchTime.n > 1 {
			b.runN(b.benchTime.n)
		}
	} else {
		d := b.benchTime.d
		for n := int64(1); !b.failed && b.duration < d && n < 1e9; {
			last := n