ARDUINO IDE debug level for stack trace only (nodeMCU 1.0) What is the minimum debug level (TOOLS tab) which will display the stack trace on crash?

I would like to reduce information clutter in the serial monitor.

I understand that debug port must point to my serial monitor.

In case it makes a difference, it is a NodeMCU, running C++, in Arduino IDE on a Ubuntu 16.04 machine.
The crash report is printed to 'standard output' by __wrap_system_restart_local in core_esp8266_postmortem.c in esp8266 Arduino core. 

The standard output is considered as debug output in esp8266 Arduino core. Debug output to hardware Serial can be enabled in runtime by Serial.setDebugOutput(true);. 

At compile time the initial debug output is controled by -DDEBUG_ESP_PORT=, for example -DDEBUG_ESP_PORT=Serial1. The Tools menu "Debug port" sets the DEBUG_ESP_PORT define. The crash report is not controlled by "Debug level" setting.