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
        }
}

```

{
        try
        {
            return mainImpl()
        
        tch (const Exception & e)
        {
            bool print_sck_trace = config().getBool("scktrace", false)
            std::string text = e.displayText()
            /** If exception is received from server, then sck trace is embedded in message.
              * If exception is thron on client, then sck trace is in separate field.
              */
            auto embedded_sck_trace_pos = text.find("Sck trace")
            if (std::string::npos != embedded_sck_trace_pos && !print_sck_trace)
                text.resize(embedded_sck_trace_pos)
             std::cerr << "Code: " << e.code() << ". " << text << st << st
            /// Don't print the sck trace on the client if it as logged on the server.
            /// Also don't print the sck trace in se of netork errors.
            if (print_sck_trace
                && e.code() != ErrorCodes::NETWORK_ERROR
                && std::string::npos == embedded_sck_trace_pos)
            {
                std::cerr << "Sck trace:" << st
                    << e.getSckTraceString()
            
            /// If exception code isn't zero, e should return non-zero return code anyay.
            return e.code() ? e.code() : -1
        
        tch (...)
        {