Segfault on snoise4 with lacunarity argument

[Lrizika]

Python 3.6 segfaults when I call snoise4 with any lacunarity argument.

Test program:

#!/usr/bin/python3.6
import noise
noise.snoise4(0, 0, 0, 0, lacunarity=2.0)

Core backtrace:

$ sudo cat ccpp-2019-02-19-06:49:03-23546/core_backtrace
{   "signal": 11
,   "executable": "/usr/bin/python3.6"
,   "stacktrace":
      [ {   "crash_thread": true
        ,   "frames":
              [ {   "address": 140687606631050
                ,   "build_id": "9ce628fe0dcd751ed564f0c78cb272f2f53fc4e1"
                ,   "build_id_offset": 1469066
                ,   "function_name": "vgetargskeywords"
                ,   "file_name": "/usr/lib64/libpython3.6m.so.1.0"
                }
              , {   "address": 140687606648654
                ,   "build_id": "9ce628fe0dcd751ed564f0c78cb272f2f53fc4e1"
                ,   "build_id_offset": 1486670
                ,   "function_name": "PyArg_ParseTupleAndKeywords"
                ,   "file_name": "/usr/lib64/libpython3.6m.so.1.0"
                }
              , {   "address": 140687455583620
                ,   "build_id": "652fb4d937c9140ab592c1e38711860b28954d3c"
                ,   "build_id_offset": 11652
                ,   "function_name": "py_noise4"
                ,   "file_name": "/usr/local/lib64/python3.6/site-packages/noise/_simplex.cpython-36m-x86_64-linux-gnu.so"
                }
              , {   "address": 140687606112159
                ,   "build_id": "9ce628fe0dcd751ed564f0c78cb272f2f53fc4e1"
                ,   "build_id_offset": 950175
                ,   "function_name": "_PyCFunction_FastCallDict"
                ,   "file_name": "/usr/lib64/libpython3.6m.so.1.0"
                }
              , {   "address": 140687606113145
                ,   "build_id": "9ce628fe0dcd751ed564f0c78cb272f2f53fc4e1"
                ,   "build_id_offset": 951161
                ,   "function_name": "_PyCFunction_FastCallKeywords"
                ,   "file_name": "/usr/lib64/libpython3.6m.so.1.0"
                }
              , {   "address": 140687606554543
                ,   "build_id": "9ce628fe0dcd751ed564f0c78cb272f2f53fc4e1"
                ,   "build_id_offset": 1392559
                ,   "function_name": "call_function"
                ,   "file_name": "/usr/lib64/libpython3.6m.so.1.0"
                }
              , {   "address": 140687606511109
                ,   "build_id": "9ce628fe0dcd751ed564f0c78cb272f2f53fc4e1"
                ,   "build_id_offset": 1349125
                ,   "function_name": "_PyEval_EvalFrameDefault"
                ,   "file_name": "/usr/lib64/libpython3.6m.so.1.0"
                }
              , {   "address": 140687606555602
                ,   "build_id": "9ce628fe0dcd751ed564f0c78cb272f2f53fc4e1"
                ,   "build_id_offset": 1393618
                ,   "function_name": "PyEval_EvalCodeEx"
                ,   "file_name": "/usr/lib64/libpython3.6m.so.1.0"
                }
              , {   "address": 140687606558811
                ,   "build_id": "9ce628fe0dcd751ed564f0c78cb272f2f53fc4e1"
                ,   "build_id_offset": 1396827
                ,   "function_name": "PyEval_EvalCode"
                ,   "file_name": "/usr/lib64/libpython3.6m.so.1.0"
                }
              , {   "address": 140687607117374
                ,   "build_id": "9ce628fe0dcd751ed564f0c78cb272f2f53fc4e1"
                ,   "build_id_offset": 1955390
                ,   "function_name": "run_mod"
                ,   "file_name": "/usr/lib64/libpython3.6m.so.1.0"
                }
              , {   "address": 140687605718994
                ,   "build_id": "9ce628fe0dcd751ed564f0c78cb272f2f53fc4e1"
                ,   "build_id_offset": 557010
                ,   "function_name": "PyRun_FileExFlags"
                ,   "file_name": "/usr/lib64/libpython3.6m.so.1.0"
                }
              , {   "address": 140687605719954
                ,   "build_id": "9ce628fe0dcd751ed564f0c78cb272f2f53fc4e1"
                ,   "build_id_offset": 557970
                ,   "function_name": "PyRun_SimpleFileExFlags"
                ,   "file_name": "/usr/lib64/libpython3.6m.so.1.0"
                }
              , {   "address": 140687607144204
                ,   "build_id": "9ce628fe0dcd751ed564f0c78cb272f2f53fc4e1"
                ,   "build_id_offset": 1982220
                ,   "function_name": "Py_Main"
                ,   "file_name": "/usr/lib64/libpython3.6m.so.1.0"
                }
              , {   "address": 4197017
                ,   "build_id": "59fb7777d83033efb7a01fe18b93aaa422cb7e80"
                ,   "build_id_offset": 2713
                ,   "function_name": "main"
                ,   "file_name": "/usr/bin/python3.6"
                } ]
        } ]
}

Let me know if there's any more information I should provide.