Collecting numpy
455  Downloading numpy-1.18.1.zip (5.4 MB)
456  Installing build dependencies: started
457  Installing build dependencies: still running...
458  Installing build dependencies: finished with status 'done'
459  Getting requirements to build wheel: started
460  Getting requirements to build wheel: finished with status 'done'
461    Preparing wheel metadata: started
462    Preparing wheel metadata: finished with status 'done'
463  WARNING: Building wheel for numpy failed: [Errno 13] Permission denied: '/home/travis/.cache/pip/wheels/92'
464Building wheels for collected packages: numpy
465Failed to build numpy
466ERROR: Could not build wheels for numpy which use PEP 517 and cannot be installed directly
467
468The command "pip install --upgrade numpy" failed. Retrying, 2 of 3.

=================================== FAILURES ===================================
1181____________________________ test_isolve_gmres[COO] ____________________________
1182[gw1] linux -- Python 3.6.7 /home/travis/virtualenv/python3.6.7/bin/python
1183/home/travis/virtualenv/python3.6.7/lib/python3.6/site-packages/scipy/sparse/linalg/tests/test_pydata_sparse.py:65: in test_isolve_gmres
1184    x, info = splin.gmres(A_sparse, b, atol=1e-15)
1185<decorator-gen-9>:2: in gmres
1186    ???
1187/home/travis/virtualenv/python3.6.7/lib/python3.6/site-packages/scipy/_lib/_threadsafety.py:46: in caller
1188    return func(*a, **kw)
1189/home/travis/virtualenv/python3.6.7/lib/python3.6/site-packages/scipy/sparse/linalg/isolve/iterative.py:609: in gmres
1190    work[slice2] += sclr1*matvec(work[slice1])
1191/home/travis/virtualenv/python3.6.7/lib/python3.6/site-packages/scipy/sparse/linalg/interface.py:229: in matvec
1192    y = self._matvec(x)
1193/home/travis/virtualenv/python3.6.7/lib/python3.6/site-packages/scipy/sparse/linalg/interface.py:196: in _matvec
1194    return self.matmat(x.reshape(-1, 1))
1195/home/travis/virtualenv/python3.6.7/lib/python3.6/site-packages/scipy/sparse/linalg/interface.py:334: in matmat
1196    Y = self._matmat(X)
1197/home/travis/virtualenv/python3.6.7/lib/python3.6/site-packages/scipy/sparse/linalg/interface.py:728: in _matmat
1198    return self.A.dot(X)
1199/home/travis/virtualenv/python3.6.7/lib/python3.6/site-packages/sparse/_coo/core.py:1635: in dot
1200    return dot(self, other)
1201/home/travis/virtualenv/python3.6.7/lib/python3.6/site-packages/sparse/_coo/common.py:287: in dot
1202    return tensordot(a, b, axes=(a_axis, b_axis))
1203/home/travis/virtualenv/python3.6.7/lib/python3.6/site-packages/sparse/_coo/common.py:168: in tensordot
1204    res = _dot(at, bt)
1205/home/travis/virtualenv/python3.6.7/lib/python3.6/site-packages/sparse/_coo/common.py:304: in _dot
1206    return _dot_coo_ndarray_type(a.dtype, b.dtype)(a.coords, a.data, b, out_shape)
1207/home/travis/virtualenv/python3.6.7/lib/python3.6/site-packages/numba/dispatcher.py:420: in _compile_for_args
1208    raise e
1209/home/travis/virtualenv/python3.6.7/lib/python3.6/site-packages/numba/dispatcher.py:353: in _compile_for_args
1210    return self.compile(tuple(argtypes))
1211/home/travis/virtualenv/python3.6.7/lib/python3.6/site-packages/numba/compiler_lock.py:32: in _acquire_compile_lock
1212    return func(*args, **kwargs)
1213/home/travis/virtualenv/python3.6.7/lib/python3.6/site-packages/numba/dispatcher.py:768: in compile
1214    cres = self._compiler.compile(args, return_type)
1215/home/travis/virtualenv/python3.6.7/lib/python3.6/site-packages/numba/dispatcher.py:77: in compile
1216    status, retval = self._compile_cached(args, return_type)
1217/home/travis/virtualenv/python3.6.7/lib/python3.6/site-packages/numba/dispatcher.py:91: in _compile_cached
1218    retval = self._compile_core(args, return_type)
1219/home/travis/virtualenv/python3.6.7/lib/python3.6/site-packages/numba/dispatcher.py:109: in _compile_core
1220    pipeline_class=self.pipeline_class)
1221/home/travis/virtualenv/python3.6.7/lib/python3.6/site-packages/numba/compiler.py:550: in compile_extra
1222    args, return_type, flags, locals)
1223/home/travis/virtualenv/python3.6.7/lib/python3.6/site-packages/numba/compiler.py:281: in __init__
1224    targetctx.refresh()
1225/home/travis/virtualenv/python3.6.7/lib/python3.6/site-packages/numba/targets/base.py:281: in refresh
1226    self.load_additional_registries()
1227/home/travis/virtualenv/python3.6.7/lib/python3.6/site-packages/numba/targets/cpu.py:80: in load_additional_registries
1228    numba.entrypoints.init_all()
1229/home/travis/virtualenv/python3.6.7/lib/python3.6/site-packages/numba/entrypoints.py:23: in init_all
1230    func = entry_point.load()
1231/home/travis/virtualenv/python3.6.7/lib/python3.6/site-packages/pkg_resources/__init__.py:2443: in load
1232    self.require(*args, **kwargs)
1233/home/travis/virtualenv/python3.6.7/lib/python3.6/site-packages/pkg_resources/__init__.py:2466: in require
1234    items = working_set.resolve(reqs, env, installer, extras=self.extras)
1235/home/travis/virtualenv/python3.6.7/lib/python3.6/site-packages/pkg_resources/__init__.py:792: in resolve
1236    raise VersionConflict(dist, req).with_context(dependent_req)
1237E   pkg_resources.ContextualVersionConflict: (numpy 1.14.6 (/home/travis/virtualenv/python3.6.7/lib/python3.6/site-packages), Requirement.parse('numpy>=1.15'), {'numba'})
1238=============================== warnings summary ===============================
1239/home/travis/virtualenv/python3.6.7/lib/python3.6/distutils/__init__.py:4
1240/home/travis/virtualenv/python3.6.7/lib/python3.6/distutils/__init__.py:4
1241/home/travis/virtualenv/python3.6.7/lib/python3.6/distutils/__init__.py:4
1242  /home/travis/virtualenv/python3.6.7/lib/python3.6/distutils/__init__.py:4: DeprecationWarning: the imp module is deprecated in favour of importlib; see the module's documentation for alternative uses
1243    import imp
1244
1245-- Docs: https://docs.pytest.org/en/latest/warnings.html
1246=========================== short test summary info ============================
1247FAILED ../../sparse/linalg/tests/test_pydata_sparse.py::test_isolve_gmres[COO]