2021-07-13T22:30:01,026 Created temporary directory: /tmp/pip-ephem-wheel-cache-lz0x94vq
2021-07-13T22:30:01,029 Created temporary directory: /tmp/pip-req-tracker-af4ypopv
2021-07-13T22:30:01,029 Initialized build tracking at /tmp/pip-req-tracker-af4ypopv
2021-07-13T22:30:01,029 Created build tracker: /tmp/pip-req-tracker-af4ypopv
2021-07-13T22:30:01,030 Entered build tracker: /tmp/pip-req-tracker-af4ypopv
2021-07-13T22:30:01,030 Created temporary directory: /tmp/pip-wheel-9rqcvyxi
2021-07-13T22:30:01,060 1 location(s) to search for versions of metablmath:
2021-07-13T22:30:01,060 * https://pypi.org/simple/metablmath/
2021-07-13T22:30:01,061 Fetching project page and analyzing links: https://pypi.org/simple/metablmath/
2021-07-13T22:30:01,061 Getting page https://pypi.org/simple/metablmath/
2021-07-13T22:30:01,063 Found index url https://pypi.org/simple
2021-07-13T22:30:01,158   Found link https://files.pythonhosted.org/packages/1f/7b/36c90f3214c300f446c2195da9db6e636d8b3814c52a9a146be1bbd719ed/metablmath-1.2.5.post1.tar.gz#sha256=952a6df2382e38a452f6325f11092769429992107142dce4ae163ed74953c985 (from https://pypi.org/simple/metablmath/), version: 1.2.5.post1
2021-07-13T22:30:01,159   Found link https://files.pythonhosted.org/packages/21/98/2cb025b49c35c91f4e8700c3e362eea4cdd2fcf87ed61ea52c5ba706ad84/metablmath-1.2.5.post2.tar.gz#sha256=31d428bb95574b9f77dce7a25fc4d5cbb37abeed4799c63aa6cbd2e3179b9a84 (from https://pypi.org/simple/metablmath/), version: 1.2.5.post2
2021-07-13T22:30:01,159   Found link https://files.pythonhosted.org/packages/5e/f0/1494cedaa446c55720d66ef40ef0d6f2ea2a501d7615e5481c74bb17c316/metablmath-1.2.5.post3.tar.gz#sha256=211f469edda48019cc7cfe0e41628552ee470655174db02ff345eb8ffef14868 (from https://pypi.org/simple/metablmath/), version: 1.2.5.post3
2021-07-13T22:30:01,159   Found link https://files.pythonhosted.org/packages/96/55/05ba7e6c5310f0e6ac201377227e9b6c77894f3ddc0d504ae600bbb8ed2b/metablmath-1.3.0.tar.gz#sha256=b4a01d1a1134b6cb923e206a5ab521c37e0611d633d7819e0caff1577d67ee7d (from https://pypi.org/simple/metablmath/), version: 1.3.0
2021-07-13T22:30:01,159   Found link https://files.pythonhosted.org/packages/1f/b8/80983ae3d4df2696f9fbe5aa89355ef7052c82ce94f9833c01c80c1c61b6/metablmath-1.4.0.tar.gz#sha256=0a05231ad40010b4d439b176238a767729c066383a202936e7310cab0af70c4c (from https://pypi.org/simple/metablmath/), version: 1.4.0
2021-07-13T22:30:01,160   Found link https://files.pythonhosted.org/packages/68/61/a0b57d0f5c0aa4cc446a8c7f49b72fed2066dd63674a559d55024953190a/metablmath-1.5.0.tar.gz#sha256=fe8ab1990c05b2254b582fd4fcb503179c83d8d4f33fd4e0d30e86a3878d9266 (from https://pypi.org/simple/metablmath/), version: 1.5.0
2021-07-13T22:30:01,160   Found link https://files.pythonhosted.org/packages/a3/ed/4f82587072ab72f5e2458ea7610769b32873d049f2d1596e9dc5876432aa/metablmath-1.6.0.tar.gz#sha256=286586aa6e64b6e95e159da7c9dee6ed091d2992dfe823344cc7f4b2a860d12b (from https://pypi.org/simple/metablmath/), version: 1.6.0
2021-07-13T22:30:01,160   Found link https://files.pythonhosted.org/packages/dc/68/01a295a3d6c8edb2a75038f48f987ba45b6e13b04b8e14fb1c0d6031b712/metablmath-1.6.1.tar.gz#sha256=c202040095c3b20ec8a9edddba652a7ec6f7940823cc5d269fef3e8e34342ce9 (from https://pypi.org/simple/metablmath/), version: 1.6.1
2021-07-13T22:30:01,160 Skipping link: not a file: https://pypi.org/simple/metablmath/
2021-07-13T22:30:01,181 Given no hashes to check 1 links for project 'metablmath': discarding no candidates
2021-07-13T22:30:01,201 Collecting metablmath==1.3.0
2021-07-13T22:30:01,203   Created temporary directory: /tmp/pip-unpack-c9dkreav
2021-07-13T22:30:01,388   Downloading metablmath-1.3.0.tar.gz (55 kB)
2021-07-13T22:30:01,572   Added metablmath==1.3.0 from https://files.pythonhosted.org/packages/96/55/05ba7e6c5310f0e6ac201377227e9b6c77894f3ddc0d504ae600bbb8ed2b/metablmath-1.3.0.tar.gz#sha256=b4a01d1a1134b6cb923e206a5ab521c37e0611d633d7819e0caff1577d67ee7d to build tracker '/tmp/pip-req-tracker-af4ypopv'
2021-07-13T22:30:01,573     Running setup.py (path:/tmp/pip-wheel-9rqcvyxi/metablmath_87dc5c70be7b4684b554cadfa22adf61/setup.py) egg_info for package metablmath
2021-07-13T22:30:01,574     Created temporary directory: /tmp/pip-pip-egg-info-o9694krf
2021-07-13T22:30:01,574     Running command python setup.py egg_info
2021-07-13T22:30:02,632     /tmp/pip-wheel-9rqcvyxi/metablmath_87dc5c70be7b4684b554cadfa22adf61/setup.py:7: DeprecationWarning: Due to possible ambiguity, 'convert()' is deprecated. Use 'convert_file()'  or 'convert_text()'.
2021-07-13T22:30:02,633       long_description = pypandoc.convert('README.md', 'rst')
2021-07-13T22:30:03,905     running egg_info
2021-07-13T22:30:03,908     creating /tmp/pip-pip-egg-info-o9694krf/metablmath.egg-info
2021-07-13T22:30:03,910     writing /tmp/pip-pip-egg-info-o9694krf/metablmath.egg-info/PKG-INFO
2021-07-13T22:30:03,914     writing dependency_links to /tmp/pip-pip-egg-info-o9694krf/metablmath.egg-info/dependency_links.txt
2021-07-13T22:30:03,916     writing requirements to /tmp/pip-pip-egg-info-o9694krf/metablmath.egg-info/requires.txt
2021-07-13T22:30:03,917     writing top-level names to /tmp/pip-pip-egg-info-o9694krf/metablmath.egg-info/top_level.txt
2021-07-13T22:30:03,919     writing manifest file '/tmp/pip-pip-egg-info-o9694krf/metablmath.egg-info/SOURCES.txt'
2021-07-13T22:30:04,349     reading manifest file '/tmp/pip-pip-egg-info-o9694krf/metablmath.egg-info/SOURCES.txt'
2021-07-13T22:30:04,351     reading manifest template 'MANIFEST.in'
2021-07-13T22:30:04,359     writing manifest file '/tmp/pip-pip-egg-info-o9694krf/metablmath.egg-info/SOURCES.txt'
2021-07-13T22:30:04,498   Source in /tmp/pip-wheel-9rqcvyxi/metablmath_87dc5c70be7b4684b554cadfa22adf61 has version 1.3.0, which satisfies requirement metablmath==1.3.0 from https://files.pythonhosted.org/packages/96/55/05ba7e6c5310f0e6ac201377227e9b6c77894f3ddc0d504ae600bbb8ed2b/metablmath-1.3.0.tar.gz#sha256=b4a01d1a1134b6cb923e206a5ab521c37e0611d633d7819e0caff1577d67ee7d
2021-07-13T22:30:04,500   Removed metablmath==1.3.0 from https://files.pythonhosted.org/packages/96/55/05ba7e6c5310f0e6ac201377227e9b6c77894f3ddc0d504ae600bbb8ed2b/metablmath-1.3.0.tar.gz#sha256=b4a01d1a1134b6cb923e206a5ab521c37e0611d633d7819e0caff1577d67ee7d from build tracker '/tmp/pip-req-tracker-af4ypopv'
2021-07-13T22:30:04,507 Created temporary directory: /tmp/pip-unpack-dl4_b6wi
2021-07-13T22:30:04,508 Building wheels for collected packages: metablmath
2021-07-13T22:30:04,523   Created temporary directory: /tmp/pip-wheel-ujqa56zg
2021-07-13T22:30:04,523   Building wheel for metablmath (setup.py): started
2021-07-13T22:30:04,524   Destination directory: /tmp/pip-wheel-ujqa56zg
2021-07-13T22:30:04,524   Running command /usr/bin/python3 -u -c 'import io, os, sys, setuptools, tokenize; sys.argv[0] = '"'"'/tmp/pip-wheel-9rqcvyxi/metablmath_87dc5c70be7b4684b554cadfa22adf61/setup.py'"'"'; __file__='"'"'/tmp/pip-wheel-9rqcvyxi/metablmath_87dc5c70be7b4684b554cadfa22adf61/setup.py'"'"';f = getattr(tokenize, '"'"'open'"'"', open)(__file__) if os.path.exists(__file__) else io.StringIO('"'"'from setuptools import setup; setup()'"'"');code = f.read().replace('"'"'\r\n'"'"', '"'"'\n'"'"');f.close();exec(compile(code, __file__, '"'"'exec'"'"'))' bdist_wheel -d /tmp/pip-wheel-ujqa56zg
2021-07-13T22:30:05,622   /tmp/pip-wheel-9rqcvyxi/metablmath_87dc5c70be7b4684b554cadfa22adf61/setup.py:7: DeprecationWarning: Due to possible ambiguity, 'convert()' is deprecated. Use 'convert_file()'  or 'convert_text()'.
2021-07-13T22:30:05,622     long_description = pypandoc.convert('README.md', 'rst')
2021-07-13T22:30:06,879   running bdist_wheel
2021-07-13T22:30:07,087   running build
2021-07-13T22:30:07,087   running build_py
2021-07-13T22:30:07,245   creating build
2021-07-13T22:30:07,245   creating build/lib.linux-armv7l-3.9
2021-07-13T22:30:07,246   creating build/lib.linux-armv7l-3.9/blmath
2021-07-13T22:30:07,247   copying blmath/value.py -> build/lib.linux-armv7l-3.9/blmath
2021-07-13T22:30:07,249   copying blmath/cache.py -> build/lib.linux-armv7l-3.9/blmath
2021-07-13T22:30:07,251   copying blmath/test_value.py -> build/lib.linux-armv7l-3.9/blmath
2021-07-13T22:30:07,253   copying blmath/__init__.py -> build/lib.linux-armv7l-3.9/blmath
2021-07-13T22:30:07,254   copying blmath/console.py -> build/lib.linux-armv7l-3.9/blmath
2021-07-13T22:30:07,256   copying blmath/test_units.py -> build/lib.linux-armv7l-3.9/blmath
2021-07-13T22:30:07,258   copying blmath/units.py -> build/lib.linux-armv7l-3.9/blmath
2021-07-13T22:30:07,262   creating build/lib.linux-armv7l-3.9/blmath/geometry
2021-07-13T22:30:07,263   copying blmath/geometry/surface_normals.py -> build/lib.linux-armv7l-3.9/blmath/geometry
2021-07-13T22:30:07,265   copying blmath/geometry/test_segment.py -> build/lib.linux-armv7l-3.9/blmath/geometry
2021-07-13T22:30:07,267   copying blmath/geometry/test_surface_normals.py -> build/lib.linux-armv7l-3.9/blmath/geometry
2021-07-13T22:30:07,269   copying blmath/geometry/convexify.py -> build/lib.linux-armv7l-3.9/blmath/geometry
2021-07-13T22:30:07,271   copying blmath/geometry/test_apex.py -> build/lib.linux-armv7l-3.9/blmath/geometry
2021-07-13T22:30:07,272   copying blmath/geometry/__init__.py -> build/lib.linux-armv7l-3.9/blmath/geometry
2021-07-13T22:30:07,274   copying blmath/geometry/apex.py -> build/lib.linux-armv7l-3.9/blmath/geometry
2021-07-13T22:30:07,276   copying blmath/geometry/barycentric.py -> build/lib.linux-armv7l-3.9/blmath/geometry
2021-07-13T22:30:07,278   copying blmath/geometry/segment.py -> build/lib.linux-armv7l-3.9/blmath/geometry
2021-07-13T22:30:07,281   copying blmath/geometry/test_convexify.py -> build/lib.linux-armv7l-3.9/blmath/geometry
2021-07-13T22:30:07,283   copying blmath/geometry/shapes.py -> build/lib.linux-armv7l-3.9/blmath/geometry
2021-07-13T22:30:07,286   creating build/lib.linux-armv7l-3.9/blmath/geometry/primitives
2021-07-13T22:30:07,287   copying blmath/geometry/primitives/box.py -> build/lib.linux-armv7l-3.9/blmath/geometry/primitives
2021-07-13T22:30:07,289   copying blmath/geometry/primitives/polyline.py -> build/lib.linux-armv7l-3.9/blmath/geometry/primitives
2021-07-13T22:30:07,292   copying blmath/geometry/primitives/plane.py -> build/lib.linux-armv7l-3.9/blmath/geometry/primitives
2021-07-13T22:30:07,295   copying blmath/geometry/primitives/test_plane.py -> build/lib.linux-armv7l-3.9/blmath/geometry/primitives
2021-07-13T22:30:07,298   copying blmath/geometry/primitives/__init__.py -> build/lib.linux-armv7l-3.9/blmath/geometry/primitives
2021-07-13T22:30:07,299   copying blmath/geometry/primitives/test_polyline.py -> build/lib.linux-armv7l-3.9/blmath/geometry/primitives
2021-07-13T22:30:07,303   creating build/lib.linux-armv7l-3.9/blmath/geometry/transform
2021-07-13T22:30:07,304   copying blmath/geometry/transform/test_rotation.py -> build/lib.linux-armv7l-3.9/blmath/geometry/transform
2021-07-13T22:30:07,307   copying blmath/geometry/transform/correspondence.py -> build/lib.linux-armv7l-3.9/blmath/geometry/transform
2021-07-13T22:30:07,309   copying blmath/geometry/transform/coordinate_manager.py -> build/lib.linux-armv7l-3.9/blmath/geometry/transform
2021-07-13T22:30:07,312   copying blmath/geometry/transform/composite.py -> build/lib.linux-armv7l-3.9/blmath/geometry/transform
2021-07-13T22:30:07,314   copying blmath/geometry/transform/rotation.py -> build/lib.linux-armv7l-3.9/blmath/geometry/transform
2021-07-13T22:30:07,316   copying blmath/geometry/transform/rigid_transform.py -> build/lib.linux-armv7l-3.9/blmath/geometry/transform
2021-07-13T22:30:07,318   copying blmath/geometry/transform/test_translation.py -> build/lib.linux-armv7l-3.9/blmath/geometry/transform
2021-07-13T22:30:07,320   copying blmath/geometry/transform/translation.py -> build/lib.linux-armv7l-3.9/blmath/geometry/transform
2021-07-13T22:30:07,322   copying blmath/geometry/transform/__init__.py -> build/lib.linux-armv7l-3.9/blmath/geometry/transform
2021-07-13T22:30:07,324   copying blmath/geometry/transform/rodrigues.py -> build/lib.linux-armv7l-3.9/blmath/geometry/transform
2021-07-13T22:30:07,327   copying blmath/geometry/transform/test_coordinate_manager.py -> build/lib.linux-armv7l-3.9/blmath/geometry/transform
2021-07-13T22:30:07,329   copying blmath/geometry/transform/test_composite.py -> build/lib.linux-armv7l-3.9/blmath/geometry/transform
2021-07-13T22:30:07,333   creating build/lib.linux-armv7l-3.9/blmath/numerics
2021-07-13T22:30:07,334   copying blmath/numerics/coercion.py -> build/lib.linux-armv7l-3.9/blmath/numerics
2021-07-13T22:30:07,336   copying blmath/numerics/numpy_ext.py -> build/lib.linux-armv7l-3.9/blmath/numerics
2021-07-13T22:30:07,338   copying blmath/numerics/vector_shortcuts.py -> build/lib.linux-armv7l-3.9/blmath/numerics
2021-07-13T22:30:07,341   copying blmath/numerics/test_predicates.py -> build/lib.linux-armv7l-3.9/blmath/numerics
2021-07-13T22:30:07,343   copying blmath/numerics/test_operations.py -> build/lib.linux-armv7l-3.9/blmath/numerics
2021-07-13T22:30:07,345   copying blmath/numerics/test_vector_shortcuts.py -> build/lib.linux-armv7l-3.9/blmath/numerics
2021-07-13T22:30:07,348   copying blmath/numerics/test_rounding.py -> build/lib.linux-armv7l-3.9/blmath/numerics
2021-07-13T22:30:07,350   copying blmath/numerics/rounding.py -> build/lib.linux-armv7l-3.9/blmath/numerics
2021-07-13T22:30:07,352   copying blmath/numerics/__init__.py -> build/lib.linux-armv7l-3.9/blmath/numerics
2021-07-13T22:30:07,354   copying blmath/numerics/test_coercion.py -> build/lib.linux-armv7l-3.9/blmath/numerics
2021-07-13T22:30:07,356   copying blmath/numerics/predicates.py -> build/lib.linux-armv7l-3.9/blmath/numerics
2021-07-13T22:30:07,358   copying blmath/numerics/operations.py -> build/lib.linux-armv7l-3.9/blmath/numerics
2021-07-13T22:30:07,360   copying blmath/numerics/matlab.py -> build/lib.linux-armv7l-3.9/blmath/numerics
2021-07-13T22:30:07,363   creating build/lib.linux-armv7l-3.9/blmath/numerics/linalg
2021-07-13T22:30:07,364   copying blmath/numerics/linalg/test_gram_schmidt.py -> build/lib.linux-armv7l-3.9/blmath/numerics/linalg
2021-07-13T22:30:07,367   copying blmath/numerics/linalg/gram_schmidt.py -> build/lib.linux-armv7l-3.9/blmath/numerics/linalg
2021-07-13T22:30:07,369   copying blmath/numerics/linalg/sparse_cg.py -> build/lib.linux-armv7l-3.9/blmath/numerics/linalg
2021-07-13T22:30:07,371   copying blmath/numerics/linalg/lchol.py -> build/lib.linux-armv7l-3.9/blmath/numerics/linalg
2021-07-13T22:30:07,373   copying blmath/numerics/linalg/test_isomorphism.py -> build/lib.linux-armv7l-3.9/blmath/numerics/linalg
2021-07-13T22:30:07,375   copying blmath/numerics/linalg/static_block_sparse_matrix.py -> build/lib.linux-armv7l-3.9/blmath/numerics/linalg
2021-07-13T22:30:07,377   copying blmath/numerics/linalg/isomorphism.py -> build/lib.linux-armv7l-3.9/blmath/numerics/linalg
2021-07-13T22:30:07,379   copying blmath/numerics/linalg/__init__.py -> build/lib.linux-armv7l-3.9/blmath/numerics/linalg
2021-07-13T22:30:07,381   copying blmath/numerics/linalg/test_cholmod.py -> build/lib.linux-armv7l-3.9/blmath/numerics/linalg
2021-07-13T22:30:07,384   creating build/lib.linux-armv7l-3.9/blmath/optimization
2021-07-13T22:30:07,385   copying blmath/optimization/__init__.py -> build/lib.linux-armv7l-3.9/blmath/optimization
2021-07-13T22:30:07,387   creating build/lib.linux-armv7l-3.9/blmath/optimization/objectives
2021-07-13T22:30:07,388   copying blmath/optimization/objectives/normals.py -> build/lib.linux-armv7l-3.9/blmath/optimization/objectives
2021-07-13T22:30:07,391   copying blmath/optimization/objectives/__init__.py -> build/lib.linux-armv7l-3.9/blmath/optimization/objectives
2021-07-13T22:30:07,394   creating build/lib.linux-armv7l-3.9/blmath/util
2021-07-13T22:30:07,395   copying blmath/util/json.py -> build/lib.linux-armv7l-3.9/blmath/util
2021-07-13T22:30:07,397   copying blmath/util/decorators.py -> build/lib.linux-armv7l-3.9/blmath/util
2021-07-13T22:30:07,399   copying blmath/util/__init__.py -> build/lib.linux-armv7l-3.9/blmath/util
2021-07-13T22:30:07,409   running build_ext
2021-07-13T22:30:07,415   building 'blmath.numerics.linalg.cholmod' extension
2021-07-13T22:30:07,416   creating build/temp.linux-armv7l-3.9
2021-07-13T22:30:07,416   creating build/temp.linux-armv7l-3.9/blmath
2021-07-13T22:30:07,417   creating build/temp.linux-armv7l-3.9/blmath/numerics
2021-07-13T22:30:07,418   creating build/temp.linux-armv7l-3.9/blmath/numerics/linalg
2021-07-13T22:30:07,418   arm-linux-gnueabihf-gcc -pthread -Wno-unused-result -Wsign-compare -DNDEBUG -g -fwrapv -O2 -Wall -g -ffile-prefix-map=/python3.9-3.9.2=. -fstack-protector-strong -Wformat -Werror=format-security -g -fwrapv -O2 -g -ffile-prefix-map=/python3.9-3.9.2=. -fstack-protector-strong -Wformat -Werror=format-security -Wdate-time -D_FORTIFY_SOURCE=2 -fPIC -I/home/piwheels/.local/lib/python3.9/site-packages/numpy/core/include -I/usr/include/suitesparse -I/usr/include/python3.9 -c blmath/numerics/linalg/cholmod.c -o build/temp.linux-armv7l-3.9/blmath/numerics/linalg/cholmod.o -O0 -fno-inline
2021-07-13T22:30:07,806   blmath/numerics/linalg/cholmod.c:4:10: fatal error: cholmod.h: No such file or directory
2021-07-13T22:30:07,806       4 | #include <cholmod.h>
2021-07-13T22:30:07,807         |          ^~~~~~~~~~~
2021-07-13T22:30:07,807   compilation terminated.
2021-07-13T22:30:07,811   error: command '/usr/bin/arm-linux-gnueabihf-gcc' failed with exit code 1
2021-07-13T22:30:07,939   Building wheel for metablmath (setup.py): finished with status 'error'
2021-07-13T22:30:07,939   ERROR: Failed building wheel for metablmath
2021-07-13T22:30:07,940   Running setup.py clean for metablmath
2021-07-13T22:30:07,940   Running command /usr/bin/python3 -u -c 'import io, os, sys, setuptools, tokenize; sys.argv[0] = '"'"'/tmp/pip-wheel-9rqcvyxi/metablmath_87dc5c70be7b4684b554cadfa22adf61/setup.py'"'"'; __file__='"'"'/tmp/pip-wheel-9rqcvyxi/metablmath_87dc5c70be7b4684b554cadfa22adf61/setup.py'"'"';f = getattr(tokenize, '"'"'open'"'"', open)(__file__) if os.path.exists(__file__) else io.StringIO('"'"'from setuptools import setup; setup()'"'"');code = f.read().replace('"'"'\r\n'"'"', '"'"'\n'"'"');f.close();exec(compile(code, __file__, '"'"'exec'"'"'))' clean --all
2021-07-13T22:30:08,967   /tmp/pip-wheel-9rqcvyxi/metablmath_87dc5c70be7b4684b554cadfa22adf61/setup.py:7: DeprecationWarning: Due to possible ambiguity, 'convert()' is deprecated. Use 'convert_file()'  or 'convert_text()'.
2021-07-13T22:30:08,968     long_description = pypandoc.convert('README.md', 'rst')
2021-07-13T22:30:10,196   running clean
2021-07-13T22:30:10,199   removing 'build/temp.linux-armv7l-3.9' (and everything under it)
2021-07-13T22:30:10,202   removing 'build/lib.linux-armv7l-3.9' (and everything under it)
2021-07-13T22:30:10,227   'build/bdist.linux-armv7l' does not exist -- can't clean it
2021-07-13T22:30:10,228   'build/scripts-3.9' does not exist -- can't clean it
2021-07-13T22:30:10,228   removing 'build'
2021-07-13T22:30:10,329 Failed to build metablmath
2021-07-13T22:30:10,330 ERROR: Failed to build one or more wheels
2021-07-13T22:30:10,330 Exception information:
2021-07-13T22:30:10,330 Traceback (most recent call last):
2021-07-13T22:30:10,330   File "/home/piwheels/.local/lib/python3.9/site-packages/pip/_internal/cli/base_command.py", line 180, in _main
2021-07-13T22:30:10,330     status = self.run(options, args)
2021-07-13T22:30:10,330   File "/home/piwheels/.local/lib/python3.9/site-packages/pip/_internal/cli/req_command.py", line 205, in wrapper
2021-07-13T22:30:10,330     return func(self, options, args)
2021-07-13T22:30:10,330   File "/home/piwheels/.local/lib/python3.9/site-packages/pip/_internal/commands/wheel.py", line 174, in run
2021-07-13T22:30:10,330     raise CommandError(
2021-07-13T22:30:10,330 pip._internal.exceptions.CommandError: Failed to build one or more wheels
2021-07-13T22:30:10,333 Removed build tracker: '/tmp/pip-req-tracker-af4ypopv'