Function pretty_filtered 

pub fn pretty_filtered<C, S>(
    config: &C,
) -> Filtered<Layer<S, Pretty, Format<Pretty>>, LevelFilter, S>
where
    C: TracingConfig,
    for<'a> S: Subscriber + LookupSpan<'a>,

Create a Pretty format filtered layer configured from the given TracingConfig.

Example

let config = TestAll;
let layer = pretty_filtered(&config);
let _unused = set_default(vec![layer.boxed()]);
info!("info level");