Why go-sql-driver fails to handle NULL in MySQL bigint field?

I am using go-sql-driver to connect to MySQL database. In one of my table I am using a field called queue_length as BIGINT. This field is NULL by default. When I try to query all the fields from the table using go-sql-driver in Golang, the fields after queue_length are not coming in the result set including queue_length.

In my use case,

Table fields
[unique_id, qid, title, text, queue_length, user_id, date_created, last_updated]

When I execute the following code I am getting values for fields before queue_length but [queue_length, user_id, date_created, last_updated] fields are not coming in result set.

But if I don't select queue_length, all fields are coming in result set. I am scanning queue_length in queueLength variable in code which is of type int64. The value coming from table is NULL. I tried type conversion also. Didn't work.

Is this a bug in go-sql-driver or am I doing anything wrong? Could anyone help me with this?

func GetQueues(uniqueId string) ([]*objects.Queue, error) {
	db, err := GetDBConnection()
	defer db.Close()
	rows, err := db.Query("SELECT qid, title, text, queue_length, user_id, date_created, last_updated FROM queue WHERE unique_id = ?", uniqueId)
	if err != nil {
		panic(err.Error())
	}
	defer rows.Close()
	var qId             string
	var title           string
	var text            string
	var userId          string
	var dateCreated     string
	var lastUpdated     string
	var queueLength     int64
	var queue           *objects.Queue
	var queues          []*objects.Queue
	for rows.Next() {
		err           = rows.Scan(&qId, &title, &text, &queueLength, &userId, &dateCreated, &lastUpdated)
		queue         = &objects.Queue{ QId: qId, Title: title, Text: text, UniqueId: uniqueId, UserId: userId, DateCreated: dateCreated, LastUpdated: lastUpdated, QueueLength: queueLength }
		queues        = append(queues, queue)
	}
	err = rows.Err()
	if err != nil {
		panic(err.Error())
		return nil, err
	}
	return queues, err
}

queueLength should be a NullInt64 instead of an int64.

var queueLength sql.NullInt64

In Go ints can't be nil so there's no way for Scan to save NULL in queueLength.

I use this tool for Null and Zero fields, it includes many data types.

The github url is https://github.com/guregu/null