{
      my $error = $!;
      $log->error($error)
    }

##</code><code>##

    my $return = do { my $error = $!; $log->error($error) };

##</code><code>##

    my $return = $log->error(${ \(my $e = $!) });

##</code><code>##

    my $return = $log->error(@{[$!]});