FAILED mypy/test/testdaemon.py::DaemonSuite::testDaemonStatusKillRestartRecheck

Bug Report
When rebuilding packages for python 3.9 mypy 0.812 unit test mypy/test/testdaemon.py::DaemonSuite::testDaemonStatusKillRestartRecheck fails.

To Reproduce

1. build python 3.9 on alpine linux x86_64
2. build mypy 0.812
3. run unit tests

Expected Behavior

unit tests passes

Actual Behavior

=================================================== FAILURES ===================================================
______________________________________ testDaemonStatusKillRestartRecheck ______________________________________
[gw15] linux -- Python 3.9.1 /usr/bin/python3
data: /home/ncopa/aports/community/py3-mypy/src/mypy-0.812/test-data/unit/daemon.test:142:
/home/ncopa/aports/community/py3-mypy/src/mypy-0.812/mypy/test/testdaemon.py:27: in run_case
    test_daemon(testcase)
/home/ncopa/aports/community/py3-mypy/src/mypy-0.812/mypy/test/testdaemon.py:46: in test_daemon
    assert_string_arrays_equal(expected_lines,
/home/ncopa/aports/community/py3-mypy/src/mypy-0.812/mypy/test/helpers.py:116: in assert_string_arrays_equal
    raise AssertionError(msg)
E   AssertionError: Command 14 (dmypy status) did not give expected output
--------------------------------------------- Captured stderr call ---------------------------------------------
Expected:
  Daemon has died                               (diff)
  == Return code: 2                             (diff)
Actual:
  Daemon is stuck; consider /home/ncopa/aports/community/py3-mypy/src/mypy-0.812/mypy/dmypy/__main__.py kill (diff)
  error                   : [Errno 111] Connection refused (diff)
  == Return code: 2                             (diff)

Alignment of first line difference:
  E: Daemon has died...
  A: Daemon is stuck; consider /home/ncopa/aports/community/py3-mypy/src/mypy...
            ^
=========================================== short test summary info ============================================
FAILED mypy/test/testdaemon.py::DaemonSuite::testDaemonStatusKillRestartRecheck
=========================== 1 failed, 8700 passed, 362 skipped in 169.82s (0:02:49) ============================

Your Environment

• Mypy version used: 0.812
• Mypy command-line flags: py.test-3 -v
• Mypy configuration options from mypy.ini (and other config files):
• Python version used: Python 3.9.1
• Operating system and version: Alpine Linux edge x86_64

Inizia con mypy/test/testdaemon.py::DaemonSuite::testDaemonStatusKillRestartRecheck e il relativo caso in test-data/unit/daemon.test. Riproduci il malfunzionamento su Python 3.9 con Alpine Linux, quindi confronta l’output previsto e quello effettivo del comando dmypy status. Il lavoro è concluso quando il test unitario indicato passa con l’output di stato del daemon previsto.