Analyse following RPM build log snippet. Describe contents accurately, without speculation or suggestions for resolution.            
Your analysis must be as concise as possible, while keeping relevant information intact.
Snippet: 
/usr/lib64/python3.14/importlib/__init__.py:88: in import_module
    return _bootstrap._gcd_import(name[level:], package, level)
<frozen importlib._bootstrap>:1398: in _gcd_import
    ???
<frozen importlib._bootstrap>:1371: in _find_and_load
    ???
<frozen importlib._bootstrap>:1342: in _find_and_load_unlocked
    ???
<frozen importlib._bootstrap>:938: in _load_unlocked
    ???
/usr/lib/python3.14/site-packages/_pytest/assertion/rewrite.py:184: in exec_module
    exec(co, module.__dict__)
aiosmtpd/tests/conftest.py:18: in <module>
    from aiosmtpd.controller import Controller
aiosmtpd/controller.py:32: in <module>
    from aiosmtpd.smtp import SMTP
aiosmtpd/smtp.py:38: in <module>
    from aiosmtpd.proxy_protocol import ProxyData, get_proxy
aiosmtpd/proxy_protocol.py:12: in <module>
    from typing import Any, ByteString, Dict, Optional, Tuple, Union
E   ImportError: cannot import name 'ByteString' from 'typing' (/usr/lib64/python3.14/typing.py)

The extended traceback shows where the failure happened. aiosmtpd/proxy_protocol.py tries to import a bunch of names from typing modules. ByteString is not importable, probably because it doesn't exist.