pub trait BuildSubscriberRet:
Subscriber
+ for<'span> LookupSpan<'span>
+ Send
+ Sync { }
Expand description
Trait alias for the complex return type of build_subscriber
in
init_logger_with_additional_layer. A Registry with any composition of tracing::Subscribers
(e.g. Registry::default().with(custom_layer)
) should be compatible with this type.
Having an alias is also useful so rustc_driver_impl does not need to explicitly depend on
tracing_subscriber
.