message: subscriber: call `inner` instead of `subscriber`
  Bit of a bug and mistake.
diff: @@ -722,7 +722,7 @@ where
  fn enabled(&self, metadata: &Metadata<'_>, ctx: Context<'_, C>) -> bool {
  if self.subscriber.enabled(metadata, ctx.clone()) {
  // if the outer subscriber enables the callsite metadata, ask the inner subscriber.
  - self.subscriber.enabled(metadata, ctx)
  + self.inner.enabled(metadata, ctx)
  } else {
  // otherwise, the callsite is disabled by this subscriber
  false
  