RuntimeError: instance.__dict__ not accessible in restricted mode

[jsmall@…]

How to Reproduce

While doing a GET operation on /wiki/WPIBuild, Trac issued an internal error.

(please provide additional details here)

Request parameters:

{'page': u'WPIBuild'}

User Agent was: Mozilla/5.0 (OS/2; U; Warp 4.5; en-US; rv:1.8.1.17) Gecko/20080925 SeaMonkey/1.1.12

System Information

Trac	0.11.1
Python	2.5.2 (r252:60911, Oct 20 2008, 12:26:15) [GCC 3.4.6 [FreeBSD] 20060305]
setuptools	0.6c9
SQLite	3.3.7
pysqlite	2.3.5
Genshi	0.5.1
mod_python	3.3.1
Pygments	0.11.1
Subversion	1.5.2 (r32768)
jQuery:	1.2.6

Python Traceback

Traceback (most recent call last):
  File "/usr/local/lib/python2.5/site-packages/Trac-0.11.1-py2.5.egg/trac/web/main.py", line 423, in _dispatch_request
    dispatcher.dispatch(req)
  File "/usr/local/lib/python2.5/site-packages/Trac-0.11.1-py2.5.egg/trac/web/main.py", line 173, in dispatch
    chosen_handler)
  File "/usr/local/lib/python2.5/site-packages/Trac-0.11.1-py2.5.egg/trac/web/main.py", line 286, in _pre_process_request
    chosen_handler = filter_.pre_process_request(req, chosen_handler)
  File "/usr/local/lib/python2.5/site-packages/Trac-0.11.1-py2.5.egg/trac/versioncontrol/api.py", line 86, in pre_process_request
    self.get_repository(req.authname).sync()
  File "/usr/local/lib/python2.5/site-packages/Trac-0.11.1-py2.5.egg/trac/versioncontrol/api.py", line 157, in get_repository
    repos = self._connector.get_repository(rtype, rdir, authname)
  File "/usr/local/lib/python2.5/site-packages/Trac-0.11.1-py2.5.egg/trac/versioncontrol/svn_fs.py", line 280, in get_repository
    'branches': self.branches})
  File "/usr/local/lib/python2.5/site-packages/Trac-0.11.1-py2.5.egg/trac/versioncontrol/svn_fs.py", line 390, in __init__
    self.pool = Pool()
  File "/usr/local/lib/python2.5/site-packages/Trac-0.11.1-py2.5.egg/trac/versioncontrol/svn_fs.py", line 151, in __init__
    self._pool = core.svn_pool_create(self._parent_pool())
  File "/usr/local/lib/python2.5/site-packages/svn/core.py", line 248, in svn_pool_create
    return Pool(parent_pool)
  File "/usr/local/lib/python2.5/site-packages/libsvn/core.py", line 1440, in svn_pool_create
    return apply(_core.svn_pool_create, args)
  File "/usr/local/lib/python2.5/site-packages/libsvn/core.py", line 5010, in _wrap
    obj.set_parent_pool(self)
  File "/usr/local/lib/python2.5/site-packages/libsvn/core.py", line 4923, in set_parent_pool
    self._parent_pool = parent_pool or application_pool
  File "/usr/local/lib/python2.5/site-packages/libsvn/core.py", line 4911, in <lambda>
    __setattr__ = lambda self, name, value: _swig_setattr(self, apr_pool_t, name, value)
  File "/usr/local/lib/python2.5/site-packages/libsvn/core.py", line 24, in _swig_setattr
    return _swig_setattr_nondynamic(self,class_type,name,value,0)
  File "/usr/local/lib/python2.5/site-packages/libsvn/core.py", line 19, in _swig_setattr_nondynamic
    self.__dict__[name] = value
RuntimeError: instance.__dict__ not accessible in restricted mode

[Remy Blank]

Funny, this is the 40^th duplicate of #3371. Do we get a prize or something?

Oh, wait, it's only the 39^th. Too bad. Maybe next time :-)

In the meantime, have a look at MostFrequentDuplicates and TracSubversion#instance-dict-restricted-mode and set PythonInterpreter main_interpreter in your Apache configuration.

(We really should have a search for similar tickets displayed at the top of /newticket.)

[Christian Boos]

Well, in this case, the ticket was created and posted from the Trac error page. Not that we don't say there that they must search for existing tickets, but this notice could eventually be made a bit more prominent (see source:trunk/trac/templates/error.html@6851#L123​).