pub fn init_tracing(default_filter: &str) -> Result<(), TryInitError>Expand description
Initialize structured logging with a simple filter string.
Convenience function for callers that don’t use ObservabilityConfig.
Respects RUST_LOG env var. Falls back to default_filter (e.g. "info").
§Errors
Returns TryInitError if a global tracing subscriber has already
been installed. This makes the function safe to call repeatedly from
tests or embedders without panicking.