Running the test suite to check refleaks over test.test_tools.test_c_analyzer will always fail, make it impossible for the refleak buildbots to run correctly. 

Steps to reproduce:

./python -m test test_tools -v -R 3:3


======================================================================
FAIL: test_typical (test.test_tools.test_c_analyzer.test_c_globals.test_find.StaticsTest)
----------------------------------------------------------------------
Traceback (most recent call last):
  File "/home/pablogsal/github/cpython/Lib/test/test_tools/test_c_analyzer/test_c_globals/test_find.py", line 319, in test_typical
    self.assertEqual(found, [
AssertionError: Lists differ: [Vari[413 chars]rc1/sub/ham.c', funcname=None, name='var1'), v[318 chars]nt')] != [Vari[413 chars]rc1/spam.c', funcname=None, name='freelist'), [431 chars]nt')]

First differing element 4:
Varia[21 chars]rc1/sub/ham.c', funcname=None, name='var1'), v[30 chars]t *')
Varia[21 chars]rc1/spam.c', funcname=None, name='freelist'), [34 chars]10]')

Second list contains 1 additional elements.
First extra element 8:
Variable(id=ID(filename='Include/spam.h', funcname=None, name='data'), vartype='static const int')

  [Variable(id=ID(filename='src1/spam.c', funcname=None, name='var1'), vartype='static const char *'),
   Variable(id=ID(filename='src1/spam.c', funcname='ham', name='initialized'), vartype='static int'),
   Variable(id=ID(filename='src1/spam.c', funcname=None, name='var2'), vartype='static PyObject *'),
   Variable(id=ID(filename='src1/eggs.c', funcname='tofu', name='ready'), vartype='static int'),
+  Variable(id=ID(filename='src1/spam.c', funcname=None, name='freelist'), vartype='static (PyTupleObject *)[10]'),
   Variable(id=ID(filename='src1/sub/ham.c', funcname=None, name='var1'), vartype='static const char const *'),
   Variable(id=ID(filename='src2/jam.c', funcname=None, name='var1'), vartype='static int'),
   Variable(id=ID(filename='src2/jam.c', funcname=None, name='var2'), vartype='static MyObject *'),
   Variable(id=ID(filename='Include/spam.h', funcname=None, name='data'), vartype='static const int')]

----------------------------------------------------------------------

Ran 219 tests in 3.769s

FAILED (failures=1, skipped=2, expected failures=14)
test test_tools failed
test_tools failed

== Tests result: FAILURE ==

1 test failed:
    test_tools

Total duration: 19 sec 101 ms
Tests result: FAILURE

Check this failure in the buildbots for reference:

https://buildbot.python.org/all/#/builders/80/builds/705/steps/4/logs/stdio

I also opened https://bugs.python.org/issue38177#msg352474 we should only track this leak in a single issue, you can close bpo-38177.

New changeset 6fbc924696b4b5097c273c06ca2d82662940e184 by Pablo Galindo in branch 'master':
bpo-38187: Fix reference leak in test_tools (GH-16233)
https://github.com/python/cpython/commit/6fbc924696b4b5097c273c06ca2d82662940e184

PR 16233 fixes the reference leaks but the original error is still present and

./python -m test test_tools -v -R 3:3

is still failing (as in the test fails, instead of failing because there are leaks).

New changeset 6693f730e0eb77d9453f73a3da33b78a97e996ee by Eric Snow in branch 'master':
bpo-38187: Fix a refleak in Tools/c-analyzer. (gh-16304)
https://github.com/python/cpython/commit/6693f730e0eb77d9453f73a3da33b78a97e996ee