my $error;
  my @got;
  {
    local $@;
    @got = eval { $self->call(); };
    if ($@) {
      if (ref($@) && $@ == $cut) {
         push @return, @$cut;
         next;
       } else {
         $error = $@;
       }
     }
  }
  die $error if $error;
  push @return, @got;