Function accumulating_layer_with_spans

pub fn accumulating_layer_with_spans(
    log: Arc<RwLock<Vec<OwnedEventWithSpans>>>,
) -> CallbackLayerWithSpan

Returns a layer that accumulates OwnedEvent and parent spans into a shared vector. This can be useful for testing and achives something similar to what the tracing_test crate does but without the extra function injections.