The builds are now running since issue36684 changed the build process splitting the coverage and there are now three test failures in test_gc, test_descr and test_typing (issue36905) unrelated to the original report : 

https://travis-ci.org/python/cpython/jobs/531845094#L1873

test test_gc failed -- Traceback (most recent call last):
  File "/home/travis/build/python/cpython/Lib/test/test_gc.py", line 817, in test_get_objects_arguments
    self.assertEqual(len(gc.get_objects()),
AssertionError: 103063 != 103064

https://travis-ci.org/python/cpython/jobs/531845094#L1816

test test_descr failed -- Traceback (most recent call last):
  File "/home/travis/build/python/cpython/Lib/test/test_descr.py", line 1272, in test_slots
    self.assertEqual(orig_objects, new_objects)
AssertionError: 94174 != 94180


This happens in C coverage test suite

https://travis-ci.org/python/cpython/jobs/531845095#L2486

======================================================================
ERROR: test_build_ext (distutils.tests.test_build_ext.BuildExtTestCase)
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Traceback (most recent call last):
  File "/home/travis/build/python/cpython/Lib/distutils/tests/test_build_ext.py", line 91, in test_build_ext
    import xx
ImportError: /tmp/tmpamh6bkg7/xx.cpython-38-x86_64-linux-gnu.so: undefined symbol: __gcov_merge_add
----------------------------------------------------------------------

I am not sure whether to keep this open for three test failures above or to have separate issues. I opened one for test_typing.