message: print block's info
diff: @@ -440,9 +440,11 @@ impl RawBufPackWriter {
  match read_block_raw_next(&mut reader) {
  Ok(rblock) => {
  let block = blockchain::RawBlock::from_dat(compression::decompress_conditional(rblock.as_ref()));
  - self.writer.append(block.to_header().compute_hash().bytes(), rblock.as_ref());
  + let blk = block.decode().unwrap();
  + info!(" - block {}", blk.get_header().get_slotid());
  + self.writer.append(blk.get_header().compute_hash().bytes(), rblock.as_ref());
  self.last = Some(block);
  - bytes.len()
  + rblock.as_ref().len()
  },
  Err(err) => {
  if err.kind() == ::std::io::ErrorKind::UnexpectedEof {
  