os: Linux skynet 4.9.0-8-amd64 #1 SMP Debian 4.9.130-2 (2018-10-27) x86_64 GNU/Linux
gcc: gcc (Debian 6.3.0-18+deb9u1) 6.3.0 20170516


FAIL: test_startup_imports (test.test_site.StartupImportTests)
----------------------------------------------------------------------
Traceback (most recent call last):
  File "/home/wencan/Downloads/Python-3.7.2/Lib/test/test_site.py", line 532, in test_startup_imports
    self.assertFalse(modules.intersection(collection_mods), stderr)
AssertionError: {'collections', 'operator', 'functools', 'types', 'keyword', 'reprlib', 'heapq'} is not false : import _frozen_importlib # frozen
import _imp # builtin
import '_thread' # <class '_frozen_importlib.BuiltinImporter'>
import '_warnings' # <class '_frozen_importlib.BuiltinImporter'>
import '_weakref' # <class '_frozen_importlib.BuiltinImporter'>
# installing zipimport hook
import 'zipimport' # <class '_frozen_importlib.BuiltinImporter'>
# installed zipimport hook
import '_frozen_importlib_external' # <class '_frozen_importlib.FrozenImporter'>
import '_io' # <class '_frozen_importlib.BuiltinImporter'>
import 'marshal' # <class '_frozen_importlib.BuiltinImporter'>
import 'posix' # <class '_frozen_importlib.BuiltinImporter'>
import _thread # previously loaded ('_thread')
import '_thread' # <class '_frozen_importlib.BuiltinImporter'>
import _weakref # previously loaded ('_weakref')
import '_weakref' # <class '_frozen_importlib.BuiltinImporter'>
# /home/wencan/Downloads/Python-3.7.2/build/../Lib/encodings/__pycache__/__init__.cpython-37.pyc matches /home/wencan/Downloads/Python-3.7.2/build/../Lib/encodings/__init__.py
# code object from '/home/wencan/Downloads/Python-3.7.2/build/../Lib/encodings/__pycache__/__init__.cpython-37.pyc'
# /home/wencan/Downloads/Python-3.7.2/build/../Lib/__pycache__/codecs.cpython-37.pyc matches /home/wencan/Downloads/Python-3.7.2/build/../Lib/codecs.py
# code object from '/home/wencan/Downloads/Python-3.7.2/build/../Lib/__pycache__/codecs.cpython-37.pyc'
import '_codecs' # <class '_frozen_importlib.BuiltinImporter'>
import 'codecs' # <_frozen_importlib_external.SourceFileLoader object at 0x7fac3f07a940>
# /home/wencan/Downloads/Python-3.7.2/build/../Lib/encodings/__pycache__/aliases.cpython-37.pyc matches /home/wencan/Downloads/Python-3.7.2/build/../Lib/encodings/aliases.py
# code object from '/home/wencan/Downloads/Python-3.7.2/build/../Lib/encodings/__pycache__/aliases.cpython-37.pyc'
import 'encodings.aliases' # <_frozen_importlib_external.SourceFileLoader object at 0x7fac3f095358>
import 'encodings' # <_frozen_importlib_external.SourceFileLoader object at 0x7fac3f07a3c8>
# /home/wencan/Downloads/Python-3.7.2/build/../Lib/encodings/__pycache__/utf_8.cpython-37.pyc matches /home/wencan/Downloads/Python-3.7.2/build/../Lib/encodings/utf_8.py
# code object from '/home/wencan/Downloads/Python-3.7.2/build/../Lib/encodings/__pycache__/utf_8.cpython-37.pyc'
import 'encodings.utf_8' # <_frozen_importlib_external.SourceFileLoader object at 0x7fac3f099080>
import '_signal' # <class '_frozen_importlib.BuiltinImporter'>
# /home/wencan/Downloads/Python-3.7.2/build/../Lib/encodings/__pycache__/latin_1.cpython-37.pyc matches /home/wencan/Downloads/Python-3.7.2/build/../Lib/encodings/latin_1.py
# code object from '/home/wencan/Downloads/Python-3.7.2/build/../Lib/encodings/__pycache__/latin_1.cpython-37.pyc'
import 'encodings.latin_1' # <_frozen_importlib_external.SourceFileLoader object at 0x7fac3f099b38>
# /home/wencan/Downloads/Python-3.7.2/build/../Lib/__pycache__/io.cpython-37.pyc matches /home/wencan/Downloads/Python-3.7.2/build/../Lib/io.py
# code object from '/home/wencan/Downloads/Python-3.7.2/build/../Lib/__pycache__/io.cpython-37.pyc'
# /home/wencan/Downloads/Python-3.7.2/build/../Lib/__pycache__/abc.cpython-37.pyc matches /home/wencan/Downloads/Python-3.7.2/build/../Lib/abc.py
# code object from '/home/wencan/Downloads/Python-3.7.2/build/../Lib/__pycache__/abc.cpython-37.pyc'
import '_abc' # <class '_frozen_importlib.BuiltinImporter'>
import 'abc' # <_frozen_importlib_external.SourceFileLoader object at 0x7fac3f0a4160>
import 'io' # <_frozen_importlib_external.SourceFileLoader object at 0x7fac3f099d68>
# /home/wencan/Downloads/Python-3.7.2/build/../Lib/__pycache__/_bootlocale.cpython-37.pyc matches /home/wencan/Downloads/Python-3.7.2/build/../Lib/_bootlocale.py
# code object from '/home/wencan/Downloads/Python-3.7.2/build/../Lib/__pycache__/_bootlocale.cpython-37.pyc'
import '_locale' # <class '_frozen_importlib.BuiltinImporter'>
import '_bootlocale' # <_frozen_importlib_external.SourceFileLoader object at 0x7fac3f0a4780>
Python 3.7.2 (default, Jan  9 2019, 09:31:17) 
[GCC 6.3.0 20170516] on linux
Type "help", "copyright", "credits" or "license" for more information.
# /home/wencan/Downloads/Python-3.7.2/build/../Lib/__pycache__/site.cpython-37.pyc matches /home/wencan/Downloads/Python-3.7.2/build/../Lib/site.py
# code object from '/home/wencan/Downloads/Python-3.7.2/build/../Lib/__pycache__/site.cpython-37.pyc'
# /home/wencan/Downloads/Python-3.7.2/build/../Lib/__pycache__/os.cpython-37.pyc matches /home/wencan/Downloads/Python-3.7.2/build/../Lib/os.py
# code object from '/home/wencan/Downloads/Python-3.7.2/build/../Lib/__pycache__/os.cpython-37.pyc'
# /home/wencan/Downloads/Python-3.7.2/build/../Lib/__pycache__/stat.cpython-37.pyc matches /home/wencan/Downloads/Python-3.7.2/build/../Lib/stat.py
# code object from '/home/wencan/Downloads/Python-3.7.2/build/../Lib/__pycache__/stat.cpython-37.pyc'
import '_stat' # <class '_frozen_importlib.BuiltinImporter'>
import 'stat' # <_frozen_importlib_external.SourceFileLoader object at 0x7fac3f042128>
# /home/wencan/Downloads/Python-3.7.2/build/../Lib/__pycache__/posixpath.cpython-37.pyc matches /home/wencan/Downloads/Python-3.7.2/build/../Lib/posixpath.py
# code object from '/home/wencan/Downloads/Python-3.7.2/build/../Lib/__pycache__/posixpath.cpython-37.pyc'
# /home/wencan/Downloads/Python-3.7.2/build/../Lib/__pycache__/genericpath.cpython-37.pyc matches /home/wencan/Downloads/Python-3.7.2/build/../Lib/genericpath.py
# code object from '/home/wencan/Downloads/Python-3.7.2/build/../Lib/__pycache__/genericpath.cpython-37.pyc'
import 'genericpath' # <_frozen_importlib_external.SourceFileLoader object at 0x7fac3f046be0>
import 'posixpath' # <_frozen_importlib_external.SourceFileLoader object at 0x7fac3f042860>
# /home/wencan/Downloads/Python-3.7.2/build/../Lib/__pycache__/_collections_abc.cpython-37.pyc matches /home/wencan/Downloads/Python-3.7.2/build/../Lib/_collections_abc.py
# code object from '/home/wencan/Downloads/Python-3.7.2/build/../Lib/__pycache__/_collections_abc.cpython-37.pyc'
import '_collections_abc' # <_frozen_importlib_external.SourceFileLoader object at 0x7fac3f050278>
import 'os' # <_frozen_importlib_external.SourceFileLoader object at 0x7fac3f0afda0>
# /home/wencan/Downloads/Python-3.7.2/build/../Lib/__pycache__/_sitebuiltins.cpython-37.pyc matches /home/wencan/Downloads/Python-3.7.2/build/../Lib/_sitebuiltins.py
# code object from '/home/wencan/Downloads/Python-3.7.2/build/../Lib/__pycache__/_sitebuiltins.cpython-37.pyc'
import '_sitebuiltins' # <_frozen_importlib_external.SourceFileLoader object at 0x7fac3f034198>
# /home/wencan/Downloads/Python-3.7.2/Lib/__pycache__/types.cpython-37.pyc matches /home/wencan/Downloads/Python-3.7.2/Lib/types.py
# code object from '/home/wencan/Downloads/Python-3.7.2/Lib/__pycache__/types.cpython-37.pyc'
import 'types' # <_frozen_importlib_external.SourceFileLoader object at 0x7fac3f0080b8>
# /home/wencan/Downloads/Python-3.7.2/Lib/importlib/__pycache__/__init__.cpython-37.pyc matches /home/wencan/Downloads/Python-3.7.2/Lib/importlib/__init__.py
# code object from '/home/wencan/Downloads/Python-3.7.2/Lib/importlib/__pycache__/__init__.cpython-37.pyc'
# /home/wencan/Downloads/Python-3.7.2/Lib/__pycache__/warnings.cpython-37.pyc matches /home/wencan/Downloads/Python-3.7.2/Lib/warnings.py
# code object from '/home/wencan/Downloads/Python-3.7.2/Lib/__pycache__/warnings.cpython-37.pyc'
import 'warnings' # <_frozen_importlib_external.SourceFileLoader object at 0x7fac3f008f98>
import 'importlib' # <_frozen_importlib_external.SourceFileLoader object at 0x7fac3f008b70>
# /home/wencan/Downloads/Python-3.7.2/Lib/importlib/__pycache__/util.cpython-37.pyc matches /home/wencan/Downloads/Python-3.7.2/Lib/importlib/util.py
# code object from '/home/wencan/Downloads/Python-3.7.2/Lib/importlib/__pycache__/util.cpython-37.pyc'
# /home/wencan/Downloads/Python-3.7.2/Lib/importlib/__pycache__/abc.cpython-37.pyc matches /home/wencan/Downloads/Python-3.7.2/Lib/importlib/abc.py
# code object from '/home/wencan/Downloads/Python-3.7.2/Lib/importlib/__pycache__/abc.cpython-37.pyc'
# /home/wencan/Downloads/Python-3.7.2/Lib/importlib/__pycache__/machinery.cpython-37.pyc matches /home/wencan/Downloads/Python-3.7.2/Lib/importlib/machinery.py
# code object from '/home/wencan/Downloads/Python-3.7.2/Lib/importlib/__pycache__/machinery.cpython-37.pyc'
import 'importlib.machinery' # <_frozen_importlib_external.SourceFileLoader object at 0x7fac3f01cb70>
import 'importlib.abc' # <_frozen_importlib_external.SourceFileLoader object at 0x7fac3f01c320>
# /home/wencan/Downloads/Python-3.7.2/Lib/__pycache__/contextlib.cpython-37.pyc matches /home/wencan/Downloads/Python-3.7.2/Lib/contextlib.py
# code object from '/home/wencan/Downloads/Python-3.7.2/Lib/__pycache__/contextlib.cpython-37.pyc'
# /home/wencan/Downloads/Python-3.7.2/Lib/collections/__pycache__/__init__.cpython-37.pyc matches /home/wencan/Downloads/Python-3.7.2/Lib/collections/__init__.py
# code object from '/home/wencan/Downloads/Python-3.7.2/Lib/collections/__pycache__/__init__.cpython-37.pyc'
# /home/wencan/Downloads/Python-3.7.2/Lib/__pycache__/operator.cpython-37.pyc matches /home/wencan/Downloads/Python-3.7.2/Lib/operator.py
# code object from '/home/wencan/Downloads/Python-3.7.2/Lib/__pycache__/operator.cpython-37.pyc'
import '_operator' # <class '_frozen_importlib.BuiltinImporter'>
import 'operator' # <_frozen_importlib_external.SourceFileLoader object at 0x7fac3efd12b0>
# /home/wencan/Downloads/Python-3.7.2/Lib/__pycache__/keyword.cpython-37.pyc matches /home/wencan/Downloads/Python-3.7.2/Lib/keyword.py
# code object from '/home/wencan/Downloads/Python-3.7.2/Lib/__pycache__/keyword.cpython-37.pyc'
import 'keyword' # <_frozen_importlib_external.SourceFileLoader object at 0x7fac3efdd358>
# /home/wencan/Downloads/Python-3.7.2/Lib/__pycache__/heapq.cpython-37.pyc matches /home/wencan/Downloads/Python-3.7.2/Lib/heapq.py
# code object from '/home/wencan/Downloads/Python-3.7.2/Lib/__pycache__/heapq.cpython-37.pyc'
# extension module '_heapq' loaded from '/home/wencan/Downloads/Python-3.7.2/build/build/lib.linux-x86_64-3.7/_heapq.cpython-37m-x86_64-linux-gnu.so'
# extension module '_heapq' executed from '/home/wencan/Downloads/Python-3.7.2/build/build/lib.linux-x86_64-3.7/_heapq.cpython-37m-x86_64-linux-gnu.so'
import '_heapq' # <_frozen_importlib_external.ExtensionFileLoader object at 0x7fac3efe3278>
import 'heapq' # <_frozen_importlib_external.SourceFileLoader object at 0x7fac3efddcc0>
import 'itertools' # <class '_frozen_importlib.BuiltinImporter'>
# /home/wencan/Downloads/Python-3.7.2/Lib/__pycache__/reprlib.cpython-37.pyc matches /home/wencan/Downloads/Python-3.7.2/Lib/reprlib.py
# code object from '/home/wencan/Downloads/Python-3.7.2/Lib/__pycache__/reprlib.cpython-37.pyc'
import 'reprlib' # <_frozen_importlib_external.SourceFileLoader object at 0x7fac3efe3358>
import '_collections' # <class '_frozen_importlib.BuiltinImporter'>
import 'collections' # <_frozen_importlib_external.SourceFileLoader object at 0x7fac3efb4470>
# /home/wencan/Downloads/Python-3.7.2/Lib/__pycache__/functools.cpython-37.pyc matches /home/wencan/Downloads/Python-3.7.2/Lib/functools.py
# code object from '/home/wencan/Downloads/Python-3.7.2/Lib/__pycache__/functools.cpython-37.pyc'
import '_functools' # <class '_frozen_importlib.BuiltinImporter'>
import 'functools' # <_frozen_importlib_external.SourceFileLoader object at 0x7fac3efb4860>
import 'contextlib' # <_frozen_importlib_external.SourceFileLoader object at 0x7fac3f01c9e8>
import 'importlib.util' # <_frozen_importlib_external.SourceFileLoader object at 0x7fac3f011630>
# possible namespace for /usr/local/lib/python3.7/site-packages/sphinxcontrib
import 'site' # <_frozen_importlib_external.SourceFileLoader object at 0x7fac3f0adac8>

Searching for the error message I reported a very similar one in the past issue34177 that is caused due to installed python causing some problem being imported in the test

It's likely a duplicate of bpo-28087.

Oops, I mean: bpo-27807 "Prevent site-packages .pth files from causing test_site failure".