Spotted on CI of https://github.com/pantsbuild/pants/pull/13286/checks?check_run_id=3920580662

Exception in thread Thread-2:
Traceback (most recent call last):
  File "/opt/hostedtoolcache/Python/3.7.12/x64/lib/python3.7/threading.py", line 926, in _bootstrap_inner
    self.run()
  File "/home/runner/work/pants/pants/src/python/pants/engine/streaming_workunit_handler.py", line 264, in run
    self.poll_workunits(finished=False)
  File "/home/runner/work/pants/pants/src/python/pants/engine/streaming_workunit_handler.py", line 257, in poll_workunits
    context=self.context,
  File "/home/runner/.cache/pants/named_caches/pex_root/venvs/short/696b29ac/lib/python3.7/site-packages/toolchain/pants/buildsense/reporter.py", line 182, in __call__
    finished=finished,
  File "/home/runner/.cache/pants/named_caches/pex_root/venvs/short/696b29ac/lib/python3.7/site-packages/toolchain/pants/buildsense/reporter.py", line 208, in handle_workunits
    self._build_state.queue_workunits(self._call_count, work_units_map)
  File "/home/runner/.cache/pants/named_caches/pex_root/venvs/short/696b29ac/lib/python3.7/site-packages/toolchain/pants/buildsense/state.py", line 85, in queue_workunits
    self._workunits_chunks_queue.put_nowait((call_num, workunits, timestamp))
  File "/opt/hostedtoolcache/Python/3.7.12/x64/lib/python3.7/queue.py", line 190, in put_nowait
    return self.put(item, block=False)
  File "/opt/hostedtoolcache/Python/3.7.12/x64/lib/python3.7/queue.py", line 136, in put
    raise Full
queue.Full

Never seen that before!

Just a warning, not fatal, but maybe worth a look!

Known issue in the Toolchain pants plugin . We already fixed it and there will be a version of the plugin with this fix in the next couple of days. This should not be breaking the build.