Here are the results from regrtest.py -R ::

..
301 tests OK.
7 tests failed:
    test_collections test_cprofile test_frozen test_inspect
    test_logging test_pkg test_profile
..
$ cat reflog.txt
test_cmd_line leaked [-23, 0, 0, 23] references, sum=0
test_compiler leaked [0, 0, 18, 0] references, sum=18
test_deque leaked [100, 100, 100, 100] references, sum=400
test_ftplib leaked [0, 172, -6, -166] references, sum=0
test_heapq leaked [108, 130, 121, 114] references, sum=473
test_itertools leaked [7380, 7380, 7380, 7380] references, sum=29520
test_list leaked [50, 50, 50, 50] references, sum=200
test_set leaked [680, 680, 680, 680] references, sum=2720
test_smtplib leaked [0, 0, -86, 86] references, sum=0
test_threading leaked [0, 86, -86, 86] references, sum=86
test_urllib2_localnet leaked [3, 3, 3, 3] references, sum=12
test_userlist leaked [50, 50, 50, 50] references, sum=200

Do buildbots run -R regressions?