Changing the logging output

Iai-Callgrind uses env_logger and the default logging level WARN. To set the logging level to something different, set the environment variable IAI_CALLGRIND_LOG for example to IAI_CALLGRIND_LOG=DEBUG. Accepted values are:

error, warn (default), info, debug, trace.

The logging output is colored per default but follows the Color settings.

See also the documentation of env_logger.