message: Count F as N/2 to work with unstable pool.
diff: @@ -391,7 +391,9 @@ impl PoolWorker {
  Ok(mt)
  }
  + #[allow(unreachable_code)]
  fn get_f(cnt: usize) -> usize {
  + return cnt / 2; /* FIXME ugly hack to work with pool instability, remove after pool will be fixed */
  if cnt < 4 {
  return 0
  }
  @@ -797,6 +799,7 @@ mod tests {
  }
  #[test]
  + #[ignore] /* FIXME remove after get_f will be restored */
  fn pool_worker_get_f_works() {
  assert_eq!(PoolWorker::get_f(0), 0);
  assert_eq!(PoolWorker::get_f(3), 0);
  