coveragepy: SQLite error: "Error binding parameter 0 - probably unsupported type" (PyPy related?)

The following error happened with Python 3.6.9[pypy-7.3.1-final].

If I remember correctly I’ve seen this before (likely also with PyPy so it might be a (compatibility) issue there), but it is not reproducible easily (i.e. depends on some randomness somewhere, but e.g. pytest-xdist / parallel execution is not involved here).

Traceback (most recent call last):
  File "/home/runner/work/pytest/pytest/.tox/pypy3-coverage/bin/coverage", line 8, in <module>
    sys.exit(main())
  File "/home/runner/work/pytest/pytest/.tox/pypy3-coverage/site-packages/coverage/cmdline.py", line 865, in main
    status = CoverageScript().command_line(argv)
  File "/home/runner/work/pytest/pytest/.tox/pypy3-coverage/site-packages/coverage/cmdline.py", line 582, in command_line
    return self.do_run(options, args)
  File "/home/runner/work/pytest/pytest/.tox/pypy3-coverage/site-packages/coverage/cmdline.py", line 747, in do_run
    self.coverage.save()
  File "/home/runner/work/pytest/pytest/.tox/pypy3-coverage/site-packages/coverage/control.py", line 651, in save
    data = self.get_data()
  File "/home/runner/work/pytest/pytest/.tox/pypy3-coverage/site-packages/coverage/control.py", line 705, in get_data
    if self._collector and self._collector.flush_data():
  File "/home/runner/work/pytest/pytest/.tox/pypy3-coverage/site-packages/coverage/collector.py", line 423, in flush_data
    self.covdata.add_arcs(self.mapped_file_dict(self.data))
  File "/home/runner/work/pytest/pytest/.tox/pypy3-coverage/site-packages/coverage/sqldata.py", line 480, in add_arcs
    data,
  File "/home/runner/work/pytest/pytest/.tox/pypy3-coverage/site-packages/coverage/sqldata.py", line 1089, in executemany
    return self.con.executemany(sql, data)
  File "/opt/hostedtoolcache/PyPy/3.6.9/x64/lib_pypy/_sqlite3.py", line 423, in executemany
    return cur.executemany(*args)
  File "/opt/hostedtoolcache/PyPy/3.6.9/x64/lib_pypy/_sqlite3.py", line 773, in wrapper
    return func(self, *args, **kwargs)
  File "/opt/hostedtoolcache/PyPy/3.6.9/x64/lib_pypy/_sqlite3.py", line 938, in executemany
    return self.__execute(True, sql, many_params)
  File "/opt/hostedtoolcache/PyPy/3.6.9/x64/lib_pypy/_sqlite3.py", line 889, in __execute
    self.__statement._set_params(params)
  File "/opt/hostedtoolcache/PyPy/3.6.9/x64/lib_pypy/_sqlite3.py", line 1180, in _set_params
    "probably unsupported type." % i)
_sqlite3.InterfaceError: Error binding parameter 0 - probably unsupported type.

(Relevant) build log snippet:

2020-07-10T12:02:21.1241557Z ##[group]Run tox -e pypy3-coverage
2020-07-10T12:02:21.1241784Z  tox -e pypy3-coverage
2020-07-10T12:02:21.1283065Z shell: /bin/bash -e {0}
2020-07-10T12:02:21.1283288Z env:
2020-07-10T12:02:21.1283409Z   pythonLocation: /opt/hostedtoolcache/PyPy/3.6.9/x64/bin
2020-07-10T12:02:21.1283544Z   PY_CACHE_KEY: a7b50a511a2559972db1d08dcdfb271afef80b32fea9877f227b24b0046b1cbc
2020-07-10T12:02:21.1283683Z   PYTEST_ADDOPTS: -ra --durations=50 -m 'pypy_specific or acceptance_tests'
2020-07-10T12:02:21.1283790Z   COLUMNS: 120
2020-07-10T12:02:21.1283899Z ##[endgroup]
2020-07-10T12:02:23.2514091Z Using /home/runner/work/pytest/pytest/.tox/.package/bin/python (3.6.9 (2ad108f17bdb, Apr 07 2020, 02:59:05)).
2020-07-10T12:02:26.4351047Z Using /home/runner/work/pytest/pytest/.tox/pypy3-coverage/bin/python (3.6.9 (2ad108f17bdb, Apr 07 2020, 02:59:05)).
2020-07-10T12:02:26.4411333Z pypy3-coverage inst-nodeps: /home/runner/work/pytest/pytest/.tox/.tmp/package/1/pytest-5.2.3.dev1473+gebe4a61e1.tar.gz
2020-07-10T12:03:05.2452703Z pypy3-coverage installed: argcomplete==1.11.1,attrs==19.3.0,certifi==2020.6.20,cffi==1.14.0,chardet==3.0.4,coverage==5.2,coverage-enable-subprocess==1.0,elementpath==1.4.6,greenlet==0.4.13,idna==2.10,importlib-metadata==1.7.0,mock==4.0.2,more-itertools==8.4.0,nose==1.3.7,packaging==20.4,pluggy==0.13.1,py==1.8.1,pyparsing==2.4.7,pytest @ file:///home/runner/work/pytest/pytest/.tox/.tmp/package/1/pytest-5.2.3.dev1473%2Bgebe4a61e1.tar.gz,readline==6.2.4.1,requests==2.24.0,six==1.15.0,urllib3==1.25.9,wcwidth==0.2.5,xmlschema==1.2.2,zipp==3.1.0
2020-07-10T12:03:05.2462774Z pypy3-coverage run-test-pre: PYTHONHASHSEED='4253141730'
2020-07-10T12:03:05.2465149Z pypy3-coverage run-test: commands[0] | coverage run -m pytest
2020-07-10T12:03:09.4893852Z ================================================= test session starts ==================================================
2020-07-10T12:03:09.4913368Z platform linux -- Python 3.6.9[pypy-7.3.1-final], pytest-5.2.3.dev1473+gebe4a61e1, py-1.8.1, pluggy-0.13.1
2020-07-10T12:03:09.4968578Z rootdir: ~/work/pytest/pytest, inifile: tox.ini, testpaths: testing
2020-07-10T12:03:09.4975308Z implicit args: '-ra -p pytester --strict-markers -l' (addopts config), "-ra --durations=50 -m 'pypy_specific or acceptance_tests'" (PYTEST_ADDOPTS)
2020-07-10T12:03:09.4978821Z cachedir: .tox/pypy3-coverage/.pytest_cache
2020-07-10T12:03:59.1194338Z collected 2777 items / 2694 deselected / 83 selected
…
2020-07-10T12:05:40.9196933Z ============================== 82 passed, 2694 deselected, 1 xfailed in 151.41s (0:02:31) ==============================
2020-07-10T12:05:41.7220437Z Traceback (most recent call last):
2020-07-10T12:05:41.7222504Z   File "/home/runner/work/pytest/pytest/.tox/pypy3-coverage/site-packages/coverage/cmdline.py", line 740, in do_run
2020-07-10T12:05:41.7222740Z     runner.run()
2020-07-10T12:05:41.7223301Z   File "/home/runner/work/pytest/pytest/.tox/pypy3-coverage/site-packages/coverage/execfile.py", line 247, in run
2020-07-10T12:05:41.7223466Z     exec(code, main_mod.__dict__)
2020-07-10T12:05:41.7223885Z   File "/home/runner/work/pytest/pytest/.tox/pypy3-coverage/site-packages/pytest/__main__.py", line 8, in <module>
2020-07-10T12:05:41.7224061Z     raise SystemExit(pytest.main())
2020-07-10T12:05:41.7224178Z SystemExit: ExitCode.OK
2020-07-10T12:05:41.7224240Z 
2020-07-10T12:05:41.7224361Z During handling of the above exception, another exception occurred:
2020-07-10T12:05:41.7224447Z 
2020-07-10T12:05:41.7224542Z Traceback (most recent call last):
2020-07-10T12:05:41.7224913Z   File "/home/runner/work/pytest/pytest/.tox/pypy3-coverage/bin/coverage", line 8, in <module>
2020-07-10T12:05:41.7225065Z     sys.exit(main())
2020-07-10T12:05:41.7225452Z   File "/home/runner/work/pytest/pytest/.tox/pypy3-coverage/site-packages/coverage/cmdline.py", line 865, in main
2020-07-10T12:05:41.7225605Z     status = CoverageScript().command_line(argv)
2020-07-10T12:05:41.7226012Z   File "/home/runner/work/pytest/pytest/.tox/pypy3-coverage/site-packages/coverage/cmdline.py", line 582, in command_line
2020-07-10T12:05:41.7226166Z     return self.do_run(options, args)
2020-07-10T12:05:41.7226558Z   File "/home/runner/work/pytest/pytest/.tox/pypy3-coverage/site-packages/coverage/cmdline.py", line 747, in do_run
2020-07-10T12:05:41.7226706Z     self.coverage.save()
2020-07-10T12:05:41.7227090Z   File "/home/runner/work/pytest/pytest/.tox/pypy3-coverage/site-packages/coverage/control.py", line 651, in save
2020-07-10T12:05:41.7227236Z     data = self.get_data()
2020-07-10T12:05:41.7227754Z   File "/home/runner/work/pytest/pytest/.tox/pypy3-coverage/site-packages/coverage/control.py", line 705, in get_data
2020-07-10T12:05:41.7228150Z     if self._collector and self._collector.flush_data():
2020-07-10T12:05:41.7228735Z   File "/home/runner/work/pytest/pytest/.tox/pypy3-coverage/site-packages/coverage/collector.py", line 423, in flush_data
2020-07-10T12:05:41.7229015Z     self.covdata.add_arcs(self.mapped_file_dict(self.data))
2020-07-10T12:05:41.7229490Z   File "/home/runner/work/pytest/pytest/.tox/pypy3-coverage/site-packages/coverage/sqldata.py", line 480, in add_arcs
2020-07-10T12:05:41.7229648Z     data,
2020-07-10T12:05:41.7230071Z   File "/home/runner/work/pytest/pytest/.tox/pypy3-coverage/site-packages/coverage/sqldata.py", line 1089, in executemany
2020-07-10T12:05:41.7230235Z     return self.con.executemany(sql, data)
2020-07-10T12:05:41.7230420Z   File "/opt/hostedtoolcache/PyPy/3.6.9/x64/lib_pypy/_sqlite3.py", line 423, in executemany
2020-07-10T12:05:41.7230559Z     return cur.executemany(*args)
2020-07-10T12:05:41.7230736Z   File "/opt/hostedtoolcache/PyPy/3.6.9/x64/lib_pypy/_sqlite3.py", line 773, in wrapper
2020-07-10T12:05:41.7230896Z     return func(self, *args, **kwargs)
2020-07-10T12:05:41.7231075Z   File "/opt/hostedtoolcache/PyPy/3.6.9/x64/lib_pypy/_sqlite3.py", line 938, in executemany
2020-07-10T12:05:41.7231231Z     return self.__execute(True, sql, many_params)
2020-07-10T12:05:41.7231417Z   File "/opt/hostedtoolcache/PyPy/3.6.9/x64/lib_pypy/_sqlite3.py", line 889, in __execute
2020-07-10T12:05:41.7231695Z     self.__statement._set_params(params)
2020-07-10T12:05:41.7231873Z   File "/opt/hostedtoolcache/PyPy/3.6.9/x64/lib_pypy/_sqlite3.py", line 1180, in _set_params
2020-07-10T12:05:41.7232140Z     "probably unsupported type." % i)
2020-07-10T12:05:41.7232499Z _sqlite3.InterfaceError: Error binding parameter 0 - probably unsupported type.
2020-07-10T12:05:41.7345535Z ERROR: InvocationError for command /home/runner/work/pytest/pytest/.tox/pypy3-coverage/bin/coverage run -m pytest (exited with code 1)
2020-07-10T12:05:41.7345922Z pypy3-coverage run-test: commands[1] | coverage combine
2020-07-10T12:05:45.0303244Z pypy3-coverage run-test: commands[2] | coverage report -m
2020-07-10T12:05:57.9769748Z Name                                Stmts   Miss Branch BrPart     Cover   Missing
2020-07-10T12:05:57.9771268Z ----------------------------------------------------------------------------------
…
2020-07-10T12:05:57.9822381Z ----------------------------------------------------------------------------------
2020-07-10T12:05:57.9822586Z TOTAL                               11444   5065   4270    685    49.94%

(full: https://github.com/blueyed/pytest/runs/857827442)