1 test fails in test suite with debian:sid

[irene]

I'm using Dockerfile-debian-python3-sqlite with debian:sid

I can't use debian:buster because this distro has a bug with gcc in python

$ docker build -t mediagoblin - < Dockerfile-debian-python3-sqlite

Log1 debian:sid :

```
...
RUN ./bin/python -m pytest ./mediagoblin/tests --boxed
 ---> Running in 06e59b6eaced
============================= test session starts ==============================
platform linux -- Python 3.9.2, pytest-6.0.2, py-1.10.0, pluggy-0.13.0
rootdir: /opt/mediagoblin/mediagoblin/tests, configfile: pytest.ini
plugins: celery-4.2.2, xdist-2.2.0, forked-1.3.0
collected 182 items / 2 skipped / 180 selected

mediagoblin/tests/test_api.py F.....................                     [ 12%]
mediagoblin/tests/test_audio.py ..                                       [ 13%]
mediagoblin/tests/test_auth.py ...                                       [ 14%]
mediagoblin/tests/test_basic_auth.py ...                                 [ 16%]
mediagoblin/tests/test_celery_setup.py .                                 [ 17%]
mediagoblin/tests/test_collections.py .                                  [ 17%]
mediagoblin/tests/test_config.py ..                                      [ 18%]
mediagoblin/tests/test_csrf_middleware.py ...                            [ 20%]
mediagoblin/tests/test_edit.py ....                                      [ 22%]
mediagoblin/tests/test_exif.py ......                                    [ 25%]
mediagoblin/tests/test_globals.py .                                      [ 26%]
mediagoblin/tests/test_legacy_api.py ..                                  [ 27%]
mediagoblin/tests/test_messages.py .                                     [ 28%]
mediagoblin/tests/test_metadata.py .                                     [ 28%]
mediagoblin/tests/test_misc.py .....                                     [ 31%]
mediagoblin/tests/test_modelmethods.py .............                     [ 38%]
mediagoblin/tests/test_moderation.py ....                                [ 40%]
mediagoblin/tests/test_notifications.py ...                              [ 42%]
mediagoblin/tests/test_oauth1.py ....                                    [ 44%]
mediagoblin/tests/test_pdf.py s                                          [ 45%]
mediagoblin/tests/test_persona.py .                                      [ 45%]
mediagoblin/tests/test_piwigo.py .                                       [ 46%]
mediagoblin/tests/test_pluginapi.py ...........                          [ 52%]
mediagoblin/tests/test_privileges.py ..                                  [ 53%]
mediagoblin/tests/test_processing.py ..                                  [ 54%]
mediagoblin/tests/test_reporting.py ...                                  [ 56%]
mediagoblin/tests/test_response.py ....                                  [ 58%]
mediagoblin/tests/test_session.py .                                      [ 58%]
mediagoblin/tests/test_sql_migrations.py .                               [ 59%]
mediagoblin/tests/test_staticdirect.py .                                 [ 59%]
mediagoblin/tests/test_storage.py .............                          [ 67%]
mediagoblin/tests/test_submission.py ........................sss         [ 81%]
mediagoblin/tests/test_subtitles.py ...                                  [ 83%]
mediagoblin/tests/test_tags.py .                                         [ 84%]
mediagoblin/tests/test_timesince.py .                                    [ 84%]
mediagoblin/tests/test_tools.py ..........                               [ 90%]
mediagoblin/tests/test_util.py ..........                                [ 95%]
mediagoblin/tests/test_video.py ...                                      [ 97%]
mediagoblin/tests/test_workbench.py .....                                [100%]

=================================== FAILURES ===================================
_________________________ TestAPI.test_can_post_image __________________________
Traceback (most recent call last):
  File "/opt/mediagoblin/mediagoblin/tests/test_api.py", line 134, in 
test_can_post_image
    assert data["object"]["fullImage"]["url"].endswith("unknown.jpe")
AssertionError: assert False
 +  where False = <built-in method endswith of str object at 
0x7feea0042490>('unknown.jpe')
 +    where <built-in method endswith of str object at 0x7feea0042490> = 
'http://localhost/mgoblin_media/media_entries/1/unknown.jfif'.endswith
---------------------------- Captured stdout setup -----------------------------
Laying foundations for __main__:
   + Laying foundations for Privilege table
Laying foundations for __main__:
   + Laying foundations for Privilege table
---------------------------- Captured stderr setup -----------------------------
INFO  [alembic.runtime.migration] Context impl SQLiteImpl.
INFO  [alembic.runtime.migration] Will assume non-transactional DDL.
INFO  [alembic.runtime.migration] Running upgrade  -> 52bf0ccbedc1, initial 
revision
INFO  [alembic.runtime.migration] Running upgrade 52bf0ccbedc1 -> 101510e3a713, 
#5382 Removes graveyard items from collections
INFO  [alembic.runtime.migration] Running upgrade 101510e3a713 -> 8429e33fdf7, 
Remove the Graveyard objects from CommentNotification objects
INFO  [alembic.runtime.migration] Running upgrade 8429e33fdf7 -> 4066b9f8b84a, 
use_comment_link_ids_notifications
INFO  [alembic.runtime.migration] Running upgrade 4066b9f8b84a -> 3145accb8fe3, 
remove tombstone comment wrappers
INFO  [alembic.runtime.migration] Running upgrade 3145accb8fe3 -> 228916769bd2, 
ensure Report.object_id is nullable
INFO  [alembic.runtime.migration] Running upgrade 52bf0ccbedc1 -> a98c1a320e88, 
Image media type initial migration
INFO  [alembic.runtime.migration] Running upgrade 52bf0ccbedc1 -> 071abb33d1da, 
OpenID plugin initial migration
INFO  [alembic.runtime.migration] Running upgrade 228916769bd2 -> afd3d1da5e29, 
Subtitle plugin initial migration
INFO  [alembic.runtime.migration] Running upgrade 228916769bd2 -> cc3651803714, 
add main transcoding progress column to MediaEntry
INFO  [alembic.runtime.migration] Context impl SQLiteImpl.
INFO  [alembic.runtime.migration] Will assume non-transactional DDL.
INFO  [alembic.runtime.migration] Running upgrade  -> 52bf0ccbedc1, initial 
revision
INFO  [alembic.runtime.migration] Running upgrade 52bf0ccbedc1 -> 101510e3a713, 
#5382 Removes graveyard items from collections
INFO  [alembic.runtime.migration] Running upgrade 101510e3a713 -> 8429e33fdf7, 
Remove the Graveyard objects from CommentNotification objects
INFO  [alembic.runtime.migration] Running upgrade 8429e33fdf7 -> 4066b9f8b84a, 
use_comment_link_ids_notifications
INFO  [alembic.runtime.migration] Running upgrade 4066b9f8b84a -> 3145accb8fe3, 
remove tombstone comment wrappers
INFO  [alembic.runtime.migration] Running upgrade 3145accb8fe3 -> 228916769bd2, 
ensure Report.object_id is nullable
INFO  [alembic.runtime.migration] Running upgrade 52bf0ccbedc1 -> a98c1a320e88, 
Image media type initial migration
INFO  [alembic.runtime.migration] Running upgrade 52bf0ccbedc1 -> 071abb33d1da, 
OpenID plugin initial migration
INFO  [alembic.runtime.migration] Running upgrade 228916769bd2 -> afd3d1da5e29, 
Subtitle plugin initial migration
INFO  [alembic.runtime.migration] Running upgrade 228916769bd2 -> cc3651803714, 
add main transcoding progress column to MediaEntry
=============================== warnings summary ===============================
lib/python3.9/site-packages/PyLD-1.0.5-py3.9.egg/pyld/jsonld.py:4413
lib/python3.9/site-packages/PyLD-1.0.5-py3.9.egg/pyld/jsonld.py:4413
  
/opt/mediagoblin/lib/python3.9/site-packages/PyLD-1.0.5-py3.9.egg/pyld/jsonld.py:4413:
 DeprecationWarning: invalid escape sequence \?

lib/python3.9/site-packages/PyLD-1.0.5-py3.9.egg/pyld/jsonld.py:577
lib/python3.9/site-packages/PyLD-1.0.5-py3.9.egg/pyld/jsonld.py:577
  
/opt/mediagoblin/lib/python3.9/site-packages/PyLD-1.0.5-py3.9.egg/pyld/jsonld.py:577:
 SyntaxWarning: "is" with a literal. Did you mean "=="?

lib/python3.9/site-packages/celery-4.2.2-py3.9.egg/celery/canvas.py:12
  
/opt/mediagoblin/lib/python3.9/site-packages/celery-4.2.2-py3.9.egg/celery/canvas.py:12:
 DeprecationWarning: Using or importing the ABCs from 'collections' instead of 
from 'collections.abc' is deprecated since Python 3.3, and in 3.10 it will stop 
working
    from collections import MutableSequence, deque

lib/python3.9/site-packages/celery-4.2.2-py3.9.egg/celery/schedules.py:8
  
/opt/mediagoblin/lib/python3.9/site-packages/celery-4.2.2-py3.9.egg/celery/schedules.py:8:
 DeprecationWarning: Using or importing the ABCs from 'collections' instead of 
from 'collections.abc' is deprecated since Python 3.3, and in 3.10 it will stop 
working
    from collections import Iterable, namedtuple

mediagoblin/tests/test_modelmethods.py:139
  /opt/mediagoblin/mediagoblin/tests/test_modelmethods.py:139: 
DeprecationWarning: invalid escape sequence \ 
    """

<unknown>:139
<unknown>:139
<unknown>:139
  <unknown>:139: DeprecationWarning: invalid escape sequence \

-- Docs: https://docs.pytest.org/en/stable/warnings.html
=========================== short test summary info ============================
FAILED mediagoblin/tests/test_api.py::TestAPI::test_can_post_image
====== 1 failed, 177 passed, 6 skipped, 10 warnings in 231.81s (0:03:51) =======
The command '/bin/sh -c ./bin/python -m pytest ./mediagoblin/tests --boxed' 
returned a non-zero code: 1

```

Log2 debian:buster

```
...
Best match: py-bcrypt 0.4
Processing py-bcrypt-0.4.tar.gz
Writing /tmp/easy_install-dp9tf1e6/py-bcrypt-0.4/setup.cfg
Running py-bcrypt-0.4/setup.py -q bdist_egg --dist-dir 
/tmp/easy_install-dp9tf1e6/py-bcrypt-0.4/egg-dist-tmp-cnyl82x_
error: Setup script exited with error: command 'x86_64-linux-gnu-gcc' failed 
with exit status 1
make: *** [Makefile:119: bin/python] Error 1
The command '/bin/sh -c make' returned a non-zero code: 2
```