const time.RFC3339Nano

7 uses

	time (current package)
		format.go#L120: 	RFC3339Nano = "2006-01-02T15:04:05.999999999Z07:00"
		format.go#L660: 	case RFC3339Nano:
		format.go#L1025: 	if layout == RFC3339 || layout == RFC3339Nano {
		format.go#L1040: 	if layout == RFC3339 || layout == RFC3339Nano {
		time.go#L1592: 	b := make([]byte, 0, len(RFC3339Nano)+len(`""`))
		time.go#L1639: 	return t.appendTo(make([]byte, 0, len(RFC3339Nano)), "Time.MarshalText: ")

	net/http
		transport.go#L2969: 		logf(time.Now().Format(time.RFC3339Nano)+": "+format, args...)