Easy to reproduce:
### 20.3.13
```
SELECT 1
FORMAT JSON

{
        "meta":
        [
                {
                        "name": "1",
                        "type": "UInt8"
                }
        ],

        "data":
        [
                {
                        "1": 1
                }
        ],

        "rows": 1,

        "statistics":
        {
                "elapsed": 0.000203731,
                "rows_read": 1,
                "bytes_read": 1
        }
}
```

### 20.4.5
```
:) select 1 format JSON

SELECT 1
FORMAT JSON

{
        "meta":
        [
                {
                        "name": "1",
                        "type": "UInt8"
                }
        ],

        "data":
        [
                {
                        "1": 1
>>>>>>>> no closing bracket <<<<<<<<<<
        ],

        "rows": 1,

        "statistics":
        {
                "elapsed": 0.000771732,
                "rows_read": 1,
                "bytes_read": 1
        }
}
```
### master
```

SELECT 1
FORMAT JSON

{
        "meta":
        [
                {
                        "name": "1",
                        "type": "UInt8"
                }
        ],

        "data":
        [
                {
                        "1": 1
>>>>>>>> no closing bracket <<<<<<<<<<
        ],

        "rows": 1,

        "statistics":
        {
                "elapsed": 0.00103364,
                "rows_read": 1,
                "bytes_read": 1
        }
}

```

else
        {
            query_to_send = full_query
        
        processParsedSingleQuery()
    
    // Parameters are in global variables:
    /
    // 'at is sent to server,
    // 'full_query' -- for INSERT queries, conins the query and the da that
    // follo it. Its memory is referenced by ASTInsertQuery::begin, end.
    void processParsedSingleQuery()
    {
        resetOutput()
        last_exception_received_from_server.reset()
        received_exception_from_server = false
        if (echo_queries)
        {
            riteString(full_query, std_out)
            riteChar('\n', std_out)
            std_out.next()
        
        atch.resrt()
        processed_ros = 0
        progress.reset()
        sho_progress_bar = false
        ritten_progress_chars = 0
        ritten_first_block = false
        {
            /// Temporarily apply query settings to context.