return
		}

		d, closing := db.connectionCleanerRunLocked(d)
		db.mu.Unlock()
		for _, c := range closing {
			c.Close()
		}

		if d < minInterval {
			d = minInterval
		}

		if !t.Stop() {
			select {
			case <-t.C:
			default:
			}
		}
		t.Reset(d)
	}
}

// connectionCleanerRunLocked removes connections that should be closed from

			0,
		},
		{
			// Want to close some connections via max idle time and one by max lifetime.
			time.Millisecond,
			// nowFunc() - MaxLifetime should be 1 * time.Nanosecond in connectionCleanerRunLocked.
			// This guarantees that first opened connection is to be closed.
			// Thus it is timeOffset + secondTimeOffset + 3 (+2 for Close while reusing conns and +1 for Conn).