traffic.out not found

Hi everyone,
I using TrafficSrever branch: master - [#828b7d3](https://github.com/apache/trafficserver/commit/828b7d3e40655982f8abc88a5e634ed17ec39681)
I added config to record.config, config as bellow:
```
CONFIG proxy.config.dump_mem_info_frequency INT 1
CONFIG proxy.config.res_track_memory INT 1
```
But when start trafficserver then traffic.out not found in ats/var/log/trafficserver

**To Reproduce**
```bash
autoreconf -i --force
./configure --prefix=/home/user/trafficserver/ats --enable-experimental-plugin
make && make install
/etc/init.d/trafficserver
```