AttributeError: 'Environment' object has no attribute 'get_db_cnx'

How to Reproduce

While doing a POST operation on /ticket/12636, Trac issued an internal error.

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Request parameters:

{u'__FORM_TOKEN': u'73aa35b2c757eee5d2b0ae62',
 u'action': u'leave',
 u'action_assign_reassign_owner': u'bollu',
 u'action_resolve_resolve_resolution': u'fixed',
 u'comment': u'I believe the guarantee at that chunk of code is that `void_total` of the era will be `>= 0`.\r\n\r\nI could add an asset at those sections of code if need be. If not, what is the correct type to be used here? I think `size_t` is reasonable as none of them are supposed to be negative in the first place.\r\n\r\n',
 u'field_architecture': u'Unknown/Multiple',
 u'field_blockedby': u'',
 u'field_blocking': u'',
 u'field_cc': u'simonmar',
 u'field_component': u'Runtime System',
 u'field_description': u'during compile I noticed\r\n\r\n{{{\r\nrts\\ProfHeap.c: In function \'dumpCensus\':\r\n\r\nrts\\ProfHeap.c:768:26: error:\r\n     warning: format \'%lu\' expects argument of type \'long unsigned int\', but argument 3 has type \'long long unsigned int\' [-Wformat=]\r\n             fprintf(hp_file, "VOID\\t%lu\\n",\r\n                              ^\r\n\r\nrts\\ProfHeap.c:770:26: error:\r\n     warning: format \'%lu\' expects argument of type \'long unsigned int\', but argument 3 has type \'long long unsigned int\' [-Wformat=]\r\n             fprintf(hp_file, "LAG\\t%lu\\n",\r\n                              ^\r\n\r\nrts\\ProfHeap.c:772:26: error:\r\n     warning: format \'%lu\' expects argument of type \'long unsigned int\', but argument 3 has type \'long long unsigned int\' [-Wformat=]\r\n             fprintf(hp_file, "USE\\t%lu\\n",\r\n                              ^\r\n\r\nrts\\ProfHeap.c:774:26: error:\r\n     warning: format \'%lu\' expects argument of type \'long unsigned int\', but argument 3 has type \'long long unsigned int\' [-Wformat=]\r\n             fprintf(hp_file, "INHERENT_USE\\t%lu\\n",\r\n                              ^\r\n\r\nrts\\ProfHeap.c:776:26: error:\r\n     warning: format \'%lu\' expects argument of type \'long unsigned int\', but argument 3 has type \'long long unsigned int\' [-Wformat=]\r\n             fprintf(hp_file, "DRAG\\t%lu\\n",\r\n                              ^\r\n}}}\r\n',
 u'field_differential': u'',
 u'field_failure': u'None/Unknown',
 u'field_keywords': u'newcomer',
 u'field_milestone': u'',
 u'field_os': u'Windows',
 u'field_priority': u'normal',
 u'field_related': u'',
 u'field_summary': u"ProfHeap's printf modifiers are incorrect",
 u'field_testcase': u'',
 u'field_type': u'bug',
 u'field_version': u'8.0.1',
 u'field_wikipage': u'',
 'id': u'12636',
 u'replyto': u'',
 u'sfp_email': u'',
 u'sfph_mail': u'',
 u'start_time': u'1486808510359145',
 u'submit': u'Submit changes',
 u'view_time': u'1486808510359145'}

User agent: #USER_AGENT#

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Python Traceback

Traceback (most recent call last):
  File "/usr/local/lib/python2.7/dist-packages/trac/web/main.py", line 613, in _dispatch_request
    dispatcher.dispatch(req)
  File "/usr/local/lib/python2.7/dist-packages/trac/web/main.py", line 253, in dispatch
    resp = chosen_handler.process_request(req)
  File "/usr/local/lib/python2.7/dist-packages/trac/ticket/web_ui.py", line 177, in process_request
    return self._process_ticket_request(req)
  File "/usr/local/lib/python2.7/dist-packages/trac/ticket/web_ui.py", line 661, in _process_ticket_request
    valid = self._validate_ticket(req, ticket, not valid) and valid
  File "/usr/local/lib/python2.7/dist-packages/trac/ticket/web_ui.py", line 1378, in _validate_ticket
    for field, message in manipulator.validate_ticket(req, ticket):
  File "build/bdist.linux-x86_64/egg/defaultcc/main.py", line 31, in validate_ticket
    comp_default_cc = DefaultCC(self.env, ticket['component'])
  File "build/bdist.linux-x86_64/egg/defaultcc/model.py", line 25, in __init__
    db = self.env.get_db_cnx()
AttributeError: 'Environment' object has no attribute 'get_db_cnx'

Trac metadata

Trac field	Value
Version	8.0.1
Type	Bug
TypeOfFailure	OtherFailure
Priority	normal
Resolution	Unresolved
Component	Compiler
Test case
Differential revisions
BlockedBy
Related
Blocking
CC
Operating system
Architecture