Use new transaction release to get the fix for zopefoundation/ZODB#208.

CHANGES.rst

@@ -28,6 +28,10 @@ Bugfixes
   stdlib in Python 3.
   (`#368 <https://github.com/zopefoundation/Zope/issues/368>`_)
 
+- Fix KeyError on releasing resources of a Connection when closing the DB.
+  This requires at least version 2.4 of the `transaction` package.
+  See `issue 208 <https://github.com/zopefoundation/ZODB/issues/208>`.
+
 - Fix rendering of ordered folder icon in ZMI.
 
 Other changes

constraints.txt

@@ -34,7 +34,7 @@ persistent==4.4.3
 pytz==2018.5
 shutilwhich==1.1.0
 six==1.11.0
-transaction==2.3.0
+transaction==2.4.0
 waitress==1.1.0
 z3c.pt==3.1.0
 zExceptions==4.1

requirements-full.txt

@@ -34,7 +34,7 @@ persistent==4.4.3
 pytz==2018.5
 shutilwhich==1.1.0
 six==1.11.0
-transaction==2.3.0
+transaction==2.4.0
 waitress==1.1.0
 z3c.pt==3.1.0
 zExceptions==4.1

setup.py

@@ -78,7 +78,7 @@ def _read_file(filename):
         'ipaddress ; python_version=="2.7"',
         'setuptools >= 36.2',
         'six',
-        'transaction',
+        'transaction >= 2.4',
         'waitress',
         'zExceptions >= 3.4',
         'z3c.pt',

src/ZPublisher/tests/test_WSGIPublisher.py

@@ -615,11 +615,11 @@ def counts(self):
         transaction.manager.registerSynch(counter)
 
         transaction.begin()
-        self.assertIsNotNone(transaction.manager._txn)
+        self.assertIsNotNone(transaction.manager.manager._txn)
         with load_app(self._makeModuleInfo()):
             transaction.abort()
 
-        self.assertIsNone(transaction.manager._txn)
+        self.assertIsNone(transaction.manager.manager._txn)
         self.assertEqual(counter.counts(), (1, 1))
 
 

versions-prod.cfg

@@ -32,7 +32,7 @@ Record = 3.5
 RestrictedPython = 4.0b6
 shutilwhich = 1.1.0
 six = 1.11.0
-transaction = 2.3.0
+transaction = 2.4.0
 waitress = 1.1.0
 WebOb = 1.8.3
 WebTest = 2.0.32