"lyrics" plugin is hanging on import

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1

This has been working for months but today, if lyrics is enabled and auto is set to yes, importing an album hangs.

With double-verbose enabled, the final line before hanging is:

lyrics: failed to fetch: https://www.musixmatch.com/lyrics/Massive-Attack/Protection (404)

Ctrl-Cing Python reveals it has hung in “threading.py”. Setting “auto” to “no” for lyrics fixes the problem.

^C^CTraceback (most recent call last):
  File "/usr/local/lib/python3.7/dist-packages/beets/util/pipeline.py", line 426, in run_parallel
    threads[-1].join(1)
  File "/usr/lib/python3.7/threading.py", line 1036, in join
    self._wait_for_tstate_lock(timeout=max(timeout, 0))
  File "/usr/lib/python3.7/threading.py", line 1048, in _wait_for_tstate_lock
    elif lock.acquire(block, timeout):
KeyboardInterrupt

During handling of the above exception, another exception occurred:

Traceback (most recent call last):
  File "/usr/local/lib/python3.7/dist-packages/beets/ui/__init__.py", line 1266, in main
    _raw_main(args)
  File "/usr/local/lib/python3.7/dist-packages/beets/ui/__init__.py", line 1253, in _raw_main
    subcommand.func(lib, suboptions, subargs)
  File "/usr/local/lib/python3.7/dist-packages/beets/ui/commands.py", line 955, in import_func
    import_files(lib, paths, query)
  File "/usr/local/lib/python3.7/dist-packages/beets/ui/commands.py", line 925, in import_files
    session.run()
  File "/usr/local/lib/python3.7/dist-packages/beets/importer.py", line 329, in run
    pl.run_parallel(QUEUE_SIZE)
  File "/usr/local/lib/python3.7/dist-packages/beets/util/pipeline.py", line 439, in run_parallel
    thread.join()
  File "/usr/lib/python3.7/threading.py", line 1032, in join
    self._wait_for_tstate_lock()
  File "/usr/lib/python3.7/threading.py", line 1048, in _wait_for_tstate_lock
    elif lock.acquire(block, timeout):
KeyboardInterrupt

^CException ignored in: <module 'threading' from '/usr/lib/python3.7/threading.py'>
Traceback (most recent call last):
  File "/usr/lib/python3.7/threading.py", line 1281, in _shutdown
    t.join()
  File "/usr/lib/python3.7/threading.py", line 1032, in join
    self._wait_for_tstate_lock()
  File "/usr/lib/python3.7/threading.py", line 1048, in _wait_for_tstate_lock
    elif lock.acquire(block, timeout):
KeyboardInterrupt
2

Running the “lyrics” command standalone, after import, does not hang.