Function tracing::collect::set_default

pub fn set_default<C>(collector: C) -> DefaultGuard where
    C: Collect + Send + Sync + 'static, 

Available on crate feature std only.

Sets the collector as the default for the duration of the lifetime of the returned DefaultGuard

The default collector is used when creating a new Span or Event, if no span is currently executing. If a span is currently executing, new spans or events are dispatched to the collector that tagged that span, instead.