Given following log snippets, their explanation, and nothing else, explain what failure, if any, occurred during build of this package.

  Snippets are in a format of [X] : [Y], where [X] is a log snippet, and [Y] is the explanation.

  Snippets are delimited with '================'.

  Drawing on information from all snippets, provide a concise explanation of the issue and recommend a solution.

  Explanation of the issue, and recommended solution, should take a handful of sentences.

  Snippets:

  [collecting ... collected 0 items / 20 errors]: [The test suite wasn't run successfully, all tests errored.]
=============
[________________ ERROR collecting _empty/tests/test_aiohttp.py _________________
ImportError while importing test module '/builddir/build/BUILD/python-uvloop-0.21.0-build/uvloop-0.21.0/_empty/tests/test_aiohttp.py'.
Hint: make sure your test modules/packages have valid Python names.
Traceback:
tests/test_aiohttp.py:14: in <module>
    from uvloop import _testbase as tb
../../BUILDROOT/usr/lib64/python3.14/site-packages/uvloop/__init__.py:6: in <module>
    from asyncio.events import BaseDefaultEventLoopPolicy as __BasePolicy
E   ImportError: cannot import name 'BaseDefaultEventLoopPolicy' from 'asyncio.events' (/usr/lib64/python3.14/asyncio/events.py)
]: [A traceback showing where the error happened. BaseDefaultEventLoopPolicy couldn't be imported from 'asyncio.events'.]
=============
[!!!!!!!!!!!!!!!!!!! Interrupted: 20 errors during collection !!!!!!!!!!!!!!!!!!!
============================== 20 errors in 0.47s ==============================]: [Summary shows that all 20 tests errored.]

Issue: 'BaseDefaultEventLoopPolicy' was removed from 'asyncio.events' in Python 3.14. uvloop code tries to import it and it fails.
Resolution: Package code needs to be updated to stop relying on a now-removed function.