message: Rename methods to match values they access.
diff: @@ -214,7 +214,7 @@ impl<I: NodeIdT, C: Context + 'static> Synchronizer<I, C> {
  }
  // Returns number of elements in `vertex_deps` queue.
  - fn vertex_deps_len(&self) -> u64 {
  + fn vertices_awaiting_deps_len(&self) -> u64 {
  self.vertices_awaiting_deps
  .iter()
  .map(|(_, pv)| pv.len())
  @@ -222,7 +222,7 @@ impl<I: NodeIdT, C: Context + 'static> Synchronizer<I, C> {
  }
  // Returns number of elements in `vertices_to_be_added` queue.
  - fn vertices_to_be_added_len(&self) -> u64 {
  + fn vertices_no_deps_len(&self) -> u64 {
  self.vertices_no_deps.len()
  }
  @@ -230,8 +230,8 @@ impl<I: NodeIdT, C: Context + 'static> Synchronizer<I, C> {
  debug!(
  era_id = ?self.instance_id,
  vertices_to_be_added_later = self.vertices_to_be_added_later_len(),
  - vertex_deps = self.vertex_deps_len(),
  - vertices_to_be_added = self.vertices_to_be_added_len(),
  + vertices_no_deps = self.vertices_no_deps_len(),
  + vertices_awaiting_deps = self.vertices_awaiting_deps_len(),
  "synchronizer queue lengths"
  );
  // All units seen have seq_number == 0.
  