Comment 4 for bug 2031341

same result using `show_metadata` after adding the book

`calibredb show_metadata --with-library http://127.0.0.1:8080/#Test 1`

results in

Traceback (most recent call last):
  File "runpy.py", line 196, in _run_module_as_main
  File "runpy.py", line 86, in _run_code
  File "site.py", line 83, in <module>
  File "site.py", line 78, in main
  File "site.py", line 50, in run_entry_point
  File "calibre\db\cli\main.py", line 252, in main
  File "calibre\db\cli\main.py", line 40, in run_cmd
  File "calibre\db\cli\cmd_show_metadata.py", line 46, in main
  File "calibre\db\cli\main.py", line 183, in run
  File "calibre\db\cli\main.py", line 206, in remote_run
  File "calibre\utils\serialize.py", line 107, in msgpack_loads
  File "msgpack/_unpacker.pyx", line 194, in msgpack._cmsgpack.unpackb
  File "calibre\utils\serialize.py", line 101, in msgpack_decoder
  File "calibre\utils\serialize.py", line 107, in msgpack_loads
  File "msgpack/_unpacker.pyx", line 194, in msgpack._cmsgpack.unpackb
  File "calibre\utils\serialize.py", line 101, in msgpack_decoder
  File "calibre\utils\serialize.py", line 83, in decode_datetime
  File "calibre\utils\iso8601.py", line 26, in parse_iso8601
TypeError: timezone() argument 1 must be datetime.timedelta, not int