TypeError is raised from apr_pool_t.__del__ on termination of functional-test with Subversion trunk

[Jun Omae]

$ git log --max-count=1 HEAD
commit e86a59be505cfbd4a045d7b1b43475c86f2d31fe (HEAD, mirror/1.0-stable)
Author: jomae <jomae@af82e41b-90c4-0310-8c96-b1721e28e2e2>
Date:   Thu Jan 23 03:09:44 2020 +0000

    1.0.20dev: avoid using openssl from homebrew on building Python 2.6 for OSX in Travis CI (closes #13238)


    git-svn-id: http://trac.edgewall.org/intertrac/log:/branches/1.0-stable@17232 af82e41b-90c4-0310-8c96-b1721e28e2e2

$ make python=27-svn functional-test

Python: /home/jun66j5/venv/py27-svn/bin/python

  Package        Version
  -------------------------------------------------------
  Python       : 2.7.12 (default, Oct  8 2019, 14:14:10)
               : [GCC 5.4.0 20160609]
  Setuptools   : 42.0.2
  Pip          : 19.3.1
  Wheel        : 0.33.6
  Genshi       : 0.7.3 (with speedups)
  Babel        : 2.8.0
  sqlite3      : 2.6.0 (3.11.0)
  PySqlite     : 2.8.3 (3.31.1)
  MySQLdb      : 1.2.5
  Psycopg2     : 2.8.4 (dt dec pq3 ext lo64)
  SVN bindings : 1.14.0 (under development)
  Mercurial    : 5.3.1
  Pygments     : 2.5.2
  Textile      : 3.0.4
  Pytz         : 2019.3
  ConfigObj    : 5.0.6
  Docutils     : 0.16
  Twill        : 0.9
  LXML         : 4.5.0
  coverage     : 5.0.4
  figleaf      : not installed

Variables:
  PATH=/home/jun66j5/venv/py27-svn/bin:/home/jun66j5/bin:/home/jun66j5/.gem/ruby/2.0.0/bin:/usr/local/sbin:/usr/local/bin:/usr/sbin:/usr/bin:/sbin:/bin:/usr/games:/usr/local/games
  PYTHONPATH=.
  TRAC_TEST_DB_URI=
  server-options= -p 3000 -a '*,/home/jun66j5/src/trac-htdigest.txt,auth'  -e

External dependencies:
  Git version: git version 2.25.2
  Subversion version: 1.14.0-dev

python setup.py egg_info
running egg_info
writing requirements to Trac.egg-info/requires.txt
writing Trac.egg-info/PKG-INFO
writing top-level names to Trac.egg-info/top_level.txt
writing dependency_links to Trac.egg-info/dependency_links.txt
writing entry points to Trac.egg-info/entry_points.txt
reading manifest file 'Trac.egg-info/SOURCES.txt'
writing manifest file 'Trac.egg-info/SOURCES.txt'
python trac/tests/functional/__init__.py
.................................................................................................................................................................................................
----------------------------------------------------------------------
Ran 193 tests in 180.170s

OK
Exception TypeError: TypeError("'NoneType' object is not callable",) in <bound method apr_pool_t.__del__ of <libsvn.core.apr_pool_t; proxy of <Swig Object of type 'apr_pool_t *' at 0x7effbb6e28a0> >> ignored

[Jun Omae]

I found workaround to avoid the exception but I'm unsure why.

trac/tests/functional/__init__.py

@@ -81 +81 @@
 try:
     # This is the first indicator of whether the subversion bindings are
     # correctly installed.
-    from svn import core
-    has_svn = True
+    import svn
 except ImportError:
     has_svn = False
+else:
+    has_svn = True
 
 try:
     from configobj import ConfigObj

[Ryan J Ollos]

Please move back to 1.0.20 if you wish to fix for release 1.0.20 (#13294).

[Ryan J Ollos]

In TracSubversion#Checklist we recommend running python -c "from svn import core". Have you seen any cases in which python -c "import svn" succeeds but python -c "from svn import core" fails?

[Ryan J Ollos]

I haven't seen the issue and the comment:1 change is already applied to 1.4-stable: tags/trac-1.4.2/trac/tests/functional/__init__.py@:63-68#L58​.

Please reopen if there's an additional changes associated with this ticket.