Fix cleanup of test controller

IPython/testing/iptestcontroller.py

@@ -95,7 +95,7 b' class IPTestController(object):'
             subprocess.call(["coverage", "xml", "-o", self.coverage_xml])
         return retcode
 
-    def cleanup(self):
+    def cleanup_process(self):
         """Cleanup on exit by killing any leftover processes."""
         subp = self.process
         if subp is None or (subp.poll() is not None):
@@ -119,6 +119,9 b' class IPTestController(object):'
             # The process did not die...
             print('... failed. Manual cleanup may be required.')
         
+    def cleanup(self):
+        "Kill process if it's still alive, and clean up temporary directories"
+        self.cleanup_process()
         for td in self.dirs:
             td.cleanup()
     

IPython/utils/tempdir.py

@@ -5,6 +5,8 b' This is copied from the stdlib and will be standard in Python 3.2 and onwards.'
 from __future__ import print_function
 
 import os as _os
+import warnings as _warnings
+import sys as _sys
 
 # This code should only be used in Python versions < 3.2, since after that we
 # can rely on the stdlib itself.
@@ -49,7 +51,7 b' except ImportError:'
                 self._closed = True
                 if _warn:
                     self._warn("Implicitly cleaning up {!r}".format(self),
-                               ResourceWarning)
+                               Warning)
 
         def __exit__(self, exc, value, tb):
             self.cleanup()
@@ -69,6 +71,7 b' except ImportError:'
         _remove = staticmethod(_os.remove)
         _rmdir = staticmethod(_os.rmdir)
         _os_error = _os.error
+        _warn = _warnings.warn
 
         def _rmtree(self, path):
             # Essentially a stripped down version of shutil.rmtree.  We can't