Log style logging to stdout while sending spans to Opentelemetry

[dvdsk]

Hi,

I am trying to get tracing to send its spans to jaeger (working) while printing only events to stdout similar to how log does. That is a single line only containing the event msg and no span info.

I have the following setup function:

fn setup_tracing(opt: &Opt) {
    use opentelemetry::KeyValue;
    opentelemetry::global::set_text_map_propagator(opentelemetry_jaeger::Propagator::new());
    let instance_name = opt.name.clone().unwrap_or(
        gethostname()
            .into_string()
            .expect("hostname not valid utf8"),
    );

    let tracer = opentelemetry_jaeger::new_pipeline()
        .with_agent_endpoint(format!("{}:6831", opt.tracing_endpoint))
        .with_service_name("mock-fs")
        .with_tags(vec![
            KeyValue::new("instance", instance_name.to_owned()),
            KeyValue::new("run", opt.run_numb),
        ])
        .install_batch(opentelemetry::runtime::Tokio)
        .unwrap();

    use tracing_subscriber::prelude::*;
    use tracing_subscriber::{fmt, Registry};
    let telemetry = tracing_opentelemetry::subscriber().with_tracer(tracer);
    let stdout = fmt::subscriber()
            .with_span_events(fmt::format::FmtSpan::NONE);
            // .with_span_list(false)
            // .with_current_span(false);

    let subscriber = Registry::default()
        .with(stdout)
        .with(telemetry);
    tracing::collect::set_global_default(subscriber).unwrap();
}

I can not use .with_span_list(false) or .with_current_span(false) as including those gives the compile error:

1. no method named `with_span_list` found for struct `FmtSubscriber<_>` in the current scope
the method was found for
- `FmtSubscriber<C, JsonFields, tracing_subscriber::fmt::format::Format<Json, T>, W>`
2. no method named `with_span_list` found for struct `FmtSubscriber<_>` in the current scope
the method was found for
- `FmtSubscriber<C, JsonFields, tracing_subscriber::fmt::format::Format<tracing_subscriber::fmt::format::Json, T>, W>`

I have both the json and fmt feature for tracing_subscriber enabled. Only using with_span_events NONE still prints the entire span on each event.

Does anyone have advice how to proceed?