message: Fix issue with `is_isomorphic_matching` on directed graphs
diff: @@ -437,10 +437,10 @@ mod matching {
  continue;
  }
  - let e0 = (field!(nodes, $j), n_neigh);
  + let e0 = (n_neigh, field!(nodes, $j));
  let e1 = (
  - field!(nodes, 1 - $j),
  field!(st, 1 - $j).graph.from_index(m_neigh),
  + field!(nodes, 1 - $j),
  );
  let edges = (e0, e1);
  if !edge_match.eq(
  