message: [state-tree]: make test stable
diff: @@ -89,6 +89,9 @@ pub fn test_state_proof() -> Result<()> {
  let hash_value = HashValue::random();
  let account1 = update_nibble(&hash_value, 0, 1);
  + // re-update to make sure account2 never equal to account1
  + let account1 = update_nibble(&account1, 2, 1);
  +
  let account2 = update_nibble(&account1, 2, 2);
  for (k, v) in vec![(account1, vec![0, 0, 0]), (account2, vec![1, 1, 1])] {
  state.put(k, v);
  