pub fn init(dir: Option<&Path>) -> Result<()>Expand description
Initialize the global tracing subscriber with a colorized console layer.
If dir is Some, also writes daily log files to that directory:
YYYY-MM-DD.txt for the combined log and YYYY-MM-DD_<level>.txt for each
tracing level. The directory is created if it does not exist, and any
*.txt file older than 7 days is pruned on startup.