More logging inside UR

ipa-core/src/helpers/buffers/unordered_receiver.rs

@@ -162,6 +162,9 @@ where
 {
     /// Determine whether `i` is the next record that we expect to receive.
     fn is_next(&self, i: usize) -> bool {
+        if i < self.next {
+            tracing::warn!("{i} is way behind {}", self.next)
+        }
         i == self.next
     }
 
@@ -201,6 +204,7 @@ where
     /// Wake the waker from the next future, if the next receiver has been polled.
     fn wake_next(&mut self) {
         self.next += 1;
+        tracing::trace!("Waking up next in line: {} ", self.next);
         let index = self.next % self.wakers.len();
         if let Some(w) = self.wakers[index].take() {
             w.wake();