try

shim/legacy/legacy.go

@@ -77,7 +77,7 @@ func (l *Legacy) Update(batch triedb.Batch) (common.Hash, error) {
 		if len(kv.Key) == 64 {
 			continue
 		}
-		fmt.Println("Account Update", kv.Key, kv.Value)
+		fmt.Printf("Account Update: %x, %x\n", kv.Key, kv.Value)
 		accounts.MustUpdate(kv.Key, kv.Value)
 	}
 	next, set, err := accounts.Commit(true)
@@ -89,6 +89,7 @@ func (l *Legacy) Update(batch triedb.Batch) (common.Hash, error) {
 	if err := l.triedb.Update(next, l.root, l.count, nodes, nil); err != nil {
 		return common.Hash{}, err
 	}
+	fmt.Printf("Legacy Update: %x\n", next)
 
 	// TODO: fix hashdb scheme later
 	l.root = next