2026-03-20T07:28:13,262 Created temporary directory: /tmp/pip-ephem-wheel-cache-bkolq_ab 2026-03-20T07:28:13,264 Created temporary directory: /tmp/pip-build-tracker-2k8a0b1k 2026-03-20T07:28:13,265 Initialized build tracking at /tmp/pip-build-tracker-2k8a0b1k 2026-03-20T07:28:13,265 Created build tracker: /tmp/pip-build-tracker-2k8a0b1k 2026-03-20T07:28:13,266 Entered build tracker: /tmp/pip-build-tracker-2k8a0b1k 2026-03-20T07:28:13,267 Created temporary directory: /tmp/pip-wheel-pu0zahxc 2026-03-20T07:28:13,270 DEPRECATION: --no-binary currently disables reading from the cache of locally built wheels. In the future --no-binary will not influence the wheel cache. pip 23.1 will enforce this behaviour change. A possible replacement is to use the --no-cache-dir option. You can use the flag --use-feature=no-binary-enable-wheel-cache to test the upcoming behaviour. Discussion can be found at https://github.com/pypa/pip/issues/11453 2026-03-20T07:28:13,272 Created temporary directory: /tmp/pip-ephem-wheel-cache-bheld7vl 2026-03-20T07:28:13,295 Looking in indexes: https://pypi.org/simple, https://www.piwheels.org/simple 2026-03-20T07:28:13,299 2 location(s) to search for versions of pyensmallen: 2026-03-20T07:28:13,299 * https://pypi.org/simple/pyensmallen/ 2026-03-20T07:28:13,299 * https://www.piwheels.org/simple/pyensmallen/ 2026-03-20T07:28:13,300 Fetching project page and analyzing links: https://pypi.org/simple/pyensmallen/ 2026-03-20T07:28:13,300 Getting page https://pypi.org/simple/pyensmallen/ 2026-03-20T07:28:13,302 Found index url https://pypi.org/simple 2026-03-20T07:28:13,527 Fetched page https://pypi.org/simple/pyensmallen/ as application/vnd.pypi.simple.v1+json 2026-03-20T07:28:13,543 Skipping link: No binaries permitted for pyensmallen: 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https://files.pythonhosted.org/packages/eb/0a/ca4ff8bcdfce28c3fd08f5e7583690b55d7c07a66f3e01c42fdf81e6be23/pyensmallen-0.4.4-cp312-cp312-manylinux_2_17_x86_64.manylinux2014_x86_64.whl (from https://pypi.org/simple/pyensmallen/) (requires-python:>=3.10) 2026-03-20T07:28:13,590 Found link https://files.pythonhosted.org/packages/0d/2a/8de0229546883c84b0adc9a76e82d853e8f8e9c24c672eb004706e215c93/pyensmallen-0.4.4.tar.gz (from https://pypi.org/simple/pyensmallen/) (requires-python:>=3.10), version: 0.4.4 2026-03-20T07:28:13,591 Skipping link: No binaries permitted for pyensmallen: https://files.pythonhosted.org/packages/49/11/aceb8ba537293f4c613f697d479b4a063965100074f8ffa89f9afeaf8806/pyensmallen-0.4.5-cp310-cp310-macosx_11_0_arm64.whl (from https://pypi.org/simple/pyensmallen/) (requires-python:>=3.10) 2026-03-20T07:28:13,591 Skipping link: No binaries permitted for pyensmallen: 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https://files.pythonhosted.org/packages/55/23/cdb4459ce2e8324d1b8bfc15182f09438d70e00f1de8b59231248d96240a/pyensmallen-0.4.5-cp313-cp313-manylinux_2_24_x86_64.manylinux_2_28_x86_64.whl (from https://pypi.org/simple/pyensmallen/) (requires-python:>=3.10) 2026-03-20T07:28:13,595 Skipping link: No binaries permitted for pyensmallen: https://files.pythonhosted.org/packages/83/c8/662ec5d703751b1bd4f0ff9bd26326cfc6eab1e00feafecdb71f894907d8/pyensmallen-0.4.5-cp314-cp314-macosx_11_0_arm64.whl (from https://pypi.org/simple/pyensmallen/) (requires-python:>=3.10) 2026-03-20T07:28:13,596 Skipping link: No binaries permitted for pyensmallen: https://files.pythonhosted.org/packages/a5/b3/c967e0c86c10250f2238688a32102ba9b19cbd34d2fdb93650e7eb8504bd/pyensmallen-0.4.5-cp314-cp314-manylinux_2_24_x86_64.manylinux_2_28_x86_64.whl (from https://pypi.org/simple/pyensmallen/) (requires-python:>=3.10) 2026-03-20T07:28:13,596 Found link https://files.pythonhosted.org/packages/0a/f1/2d4c87f7cc7a1d34ede0189d360d1388d3d89084ae96a448d14fd5fded2b/pyensmallen-0.4.5.tar.gz (from https://pypi.org/simple/pyensmallen/) (requires-python:>=3.10), version: 0.4.5 2026-03-20T07:28:13,597 Fetching project page and analyzing links: https://www.piwheels.org/simple/pyensmallen/ 2026-03-20T07:28:13,598 Getting page https://www.piwheels.org/simple/pyensmallen/ 2026-03-20T07:28:13,599 Found index url https://www.piwheels.org/simple 2026-03-20T07:28:13,768 Fetched page https://www.piwheels.org/simple/pyensmallen/ as text/html 2026-03-20T07:28:13,769 Skipping link: not a file: https://www.piwheels.org/simple/pyensmallen/ 2026-03-20T07:28:13,770 Skipping link: not a file: https://pypi.org/simple/pyensmallen/ 2026-03-20T07:28:13,792 Given no hashes to check 1 links for project 'pyensmallen': discarding no candidates 2026-03-20T07:28:13,811 Collecting pyensmallen==0.4.5 2026-03-20T07:28:13,814 Created temporary directory: /tmp/pip-unpack-vo_77_sy 2026-03-20T07:28:13,963 Downloading pyensmallen-0.4.5.tar.gz (4.6 MB) 2026-03-20T07:28:14,792 Added pyensmallen==0.4.5 from https://files.pythonhosted.org/packages/0a/f1/2d4c87f7cc7a1d34ede0189d360d1388d3d89084ae96a448d14fd5fded2b/pyensmallen-0.4.5.tar.gz to build tracker '/tmp/pip-build-tracker-2k8a0b1k' 2026-03-20T07:28:14,802 Created temporary directory: /tmp/pip-build-env-lvtq8w_s 2026-03-20T07:28:14,806 Installing build dependencies: started 2026-03-20T07:28:14,808 Running command pip subprocess to install build dependencies 2026-03-20T07:28:15,928 Using pip 23.0.1 from /usr/lib/python3/dist-packages/pip (python 3.11) 2026-03-20T07:28:16,509 DEPRECATION: --no-binary currently disables reading from the cache of locally built wheels. In the future --no-binary will not influence the wheel cache. pip 23.1 will enforce this behaviour change. A possible replacement is to use the --no-cache-dir option. You can use the flag --use-feature=no-binary-enable-wheel-cache to test the upcoming behaviour. Discussion can be found at https://github.com/pypa/pip/issues/11453 2026-03-20T07:28:16,533 Looking in indexes: https://pypi.org/simple, https://www.piwheels.org/simple 2026-03-20T07:28:18,333 Collecting setuptools>=42 2026-03-20T07:28:18,420 Using cached https://www.piwheels.org/simple/setuptools/setuptools-82.0.1-py3-none-any.whl (1.0 MB) 2026-03-20T07:28:18,684 Collecting wheel 2026-03-20T07:28:18,699 Using cached https://www.piwheels.org/simple/wheel/wheel-0.46.3-py3-none-any.whl (30 kB) 2026-03-20T07:28:18,959 Collecting ninja 2026-03-20T07:28:18,971 Using cached ninja-1.13.0-py3-none-manylinux_2_28_armv7l.manylinux_2_31_armv7l.whl (146 kB) 2026-03-20T07:28:19,189 Collecting pybind11>=2.4 2026-03-20T07:28:19,218 Using cached https://www.piwheels.org/simple/pybind11/pybind11-3.0.2-py3-none-any.whl (310 kB) 2026-03-20T07:28:19,343 Collecting meson-python 2026-03-20T07:28:19,358 Using cached https://www.piwheels.org/simple/meson-python/meson_python-0.19.0-py3-none-any.whl (28 kB) 2026-03-20T07:28:20,411 Link requires a different Python (3.11.2 not in: '>=3.7,<3.11'): https://files.pythonhosted.org/packages/3a/be/650f9c091ef71cb01d735775d554e068752d3ff63d7943b26316dc401749/numpy-1.21.2.zip (from https://pypi.org/simple/numpy/) (requires-python:>=3.7,<3.11) 2026-03-20T07:28:20,418 Link requires a different Python (3.11.2 not in: '>=3.7,<3.11'): https://files.pythonhosted.org/packages/5f/d6/ad58ded26556eaeaa8c971e08b6466f17c4ac4d786cd3d800e26ce59cc01/numpy-1.21.3.zip (from https://pypi.org/simple/numpy/) (requires-python:>=3.7,<3.11) 2026-03-20T07:28:20,425 Link requires a different Python (3.11.2 not in: '>=3.7,<3.11'): https://files.pythonhosted.org/packages/fb/48/b0708ebd7718a8933f0d3937513ef8ef2f4f04529f1f66ca86d873043921/numpy-1.21.4.zip (from https://pypi.org/simple/numpy/) (requires-python:>=3.7,<3.11) 2026-03-20T07:28:20,432 Link requires a different Python (3.11.2 not in: '>=3.7,<3.11'): https://files.pythonhosted.org/packages/c2/a8/a924a09492bdfee8c2ec3094d0a13f2799800b4fdc9c890738aeeb12c72e/numpy-1.21.5.zip (from https://pypi.org/simple/numpy/) (requires-python:>=3.7,<3.11) 2026-03-20T07:28:20,439 Link requires a different Python (3.11.2 not in: '>=3.7,<3.11'): https://files.pythonhosted.org/packages/45/b7/de7b8e67f2232c26af57c205aaad29fe17754f793404f59c8a730c7a191a/numpy-1.21.6.zip (from https://pypi.org/simple/numpy/) (requires-python:>=3.7,<3.11) 2026-03-20T07:28:21,137 Collecting numpy 2026-03-20T07:28:21,983 Using cached https://www.piwheels.org/simple/numpy/numpy-2.4.3-cp311-cp311-linux_armv7l.whl (6.3 MB) 2026-03-20T07:28:22,573 Collecting setuptools-scm 2026-03-20T07:28:22,588 Using cached https://www.piwheels.org/simple/setuptools-scm/setuptools_scm-9.2.2-py3-none-any.whl (62 kB) 2026-03-20T07:28:22,770 Collecting packaging>=24.0 2026-03-20T07:28:22,786 Using cached https://www.piwheels.org/simple/packaging/packaging-26.0-py3-none-any.whl (74 kB) 2026-03-20T07:28:23,159 Collecting meson>=0.64.0 2026-03-20T07:28:23,267 Using cached https://www.piwheels.org/simple/meson/meson-1.10.2-py3-none-any.whl (1.1 MB) 2026-03-20T07:28:23,428 Collecting pyproject-metadata>=0.9.0 2026-03-20T07:28:23,444 Using cached https://www.piwheels.org/simple/pyproject-metadata/pyproject_metadata-0.11.0-py3-none-any.whl (22 kB) 2026-03-20T07:28:26,514 Installing collected packages: setuptools, pybind11, packaging, numpy, ninja, meson, wheel, setuptools-scm, pyproject-metadata, meson-python 2026-03-20T07:28:29,901 Creating /tmp/pip-build-env-lvtq8w_s/overlay/local/bin 2026-03-20T07:28:29,903 changing mode of /tmp/pip-build-env-lvtq8w_s/overlay/local/bin/pybind11-config to 755 2026-03-20T07:28:39,216 changing mode of /tmp/pip-build-env-lvtq8w_s/overlay/local/bin/f2py to 755 2026-03-20T07:28:39,219 changing mode of /tmp/pip-build-env-lvtq8w_s/overlay/local/bin/numpy-config to 755 2026-03-20T07:28:43,295 changing mode of /tmp/pip-build-env-lvtq8w_s/overlay/local/bin/meson to 755 2026-03-20T07:28:43,420 changing mode of /tmp/pip-build-env-lvtq8w_s/overlay/local/bin/wheel to 755 2026-03-20T07:28:43,668 changing mode of /tmp/pip-build-env-lvtq8w_s/overlay/local/bin/setuptools-scm to 755 2026-03-20T07:28:43,939 Successfully installed meson-1.10.2 meson-python-0.19.0 ninja-1.13.0 numpy-2.4.3 packaging-26.0 pybind11-3.0.2 pyproject-metadata-0.11.0 setuptools-82.0.1 setuptools-scm-9.2.2 wheel-0.46.3 2026-03-20T07:28:44,363 Installing build dependencies: finished with status 'done' 2026-03-20T07:28:44,370 Getting requirements to build wheel: started 2026-03-20T07:28:44,371 Running command Getting requirements to build wheel 2026-03-20T07:28:44,841 Getting requirements to build wheel: finished with status 'done' 2026-03-20T07:28:44,859 Installing backend dependencies: started 2026-03-20T07:28:44,860 Running command pip subprocess to install backend dependencies 2026-03-20T07:28:46,007 Using pip 23.0.1 from /usr/lib/python3/dist-packages/pip (python 3.11) 2026-03-20T07:28:46,595 DEPRECATION: --no-binary currently disables reading from the cache of locally built wheels. In the future --no-binary will not influence the wheel cache. pip 23.1 will enforce this behaviour change. A possible replacement is to use the --no-cache-dir option. You can use the flag --use-feature=no-binary-enable-wheel-cache to test the upcoming behaviour. Discussion can be found at https://github.com/pypa/pip/issues/11453 2026-03-20T07:28:46,617 Looking in indexes: https://pypi.org/simple, https://www.piwheels.org/simple 2026-03-20T07:28:47,064 Collecting patchelf>=0.11.0 2026-03-20T07:28:47,085 Using cached patchelf-0.17.2.4-py3-none-manylinux2014_armv7l.manylinux_2_17_armv7l.musllinux_1_1_armv7l.whl (431 kB) 2026-03-20T07:28:49,682 Installing collected packages: patchelf 2026-03-20T07:28:49,742 Successfully installed patchelf-0.17.2.4 2026-03-20T07:28:49,978 Installing backend dependencies: finished with status 'done' 2026-03-20T07:28:49,980 Created temporary directory: /tmp/pip-modern-metadata-m7h6ulcr 2026-03-20T07:28:49,983 Preparing metadata (pyproject.toml): started 2026-03-20T07:28:49,984 Running command Preparing metadata (pyproject.toml) 2026-03-20T07:28:51,528 + meson setup /tmp/pip-wheel-pu0zahxc/pyensmallen_66872765ea1f4cc6ab9be7f7f0e6fd5f /tmp/pip-wheel-pu0zahxc/pyensmallen_66872765ea1f4cc6ab9be7f7f0e6fd5f/.mesonpy-o4jvem19 -Dbuildtype=release -Db_ndebug=if-release -Db_vscrt=md --native-file=/tmp/pip-wheel-pu0zahxc/pyensmallen_66872765ea1f4cc6ab9be7f7f0e6fd5f/.mesonpy-o4jvem19/meson-python-native-file.ini 2026-03-20T07:28:55,704 The Meson build system 2026-03-20T07:28:55,705 Version: 1.10.2 2026-03-20T07:28:55,706 Source dir: /tmp/pip-wheel-pu0zahxc/pyensmallen_66872765ea1f4cc6ab9be7f7f0e6fd5f 2026-03-20T07:28:55,707 Build dir: /tmp/pip-wheel-pu0zahxc/pyensmallen_66872765ea1f4cc6ab9be7f7f0e6fd5f/.mesonpy-o4jvem19 2026-03-20T07:28:55,708 Build type: native build 2026-03-20T07:28:55,709 Project name: pyensmallen 2026-03-20T07:28:55,710 Project version: 0.4.5 2026-03-20T07:28:55,711 C++ compiler for the host machine: c++ (gcc 12.2.0 "c++ (Raspbian 12.2.0-14+rpi1+deb12u1) 12.2.0") 2026-03-20T07:28:55,712 C++ linker for the host machine: c++ ld.bfd 2.40 2026-03-20T07:28:55,713 Host machine cpu family: arm 2026-03-20T07:28:55,714 Host machine cpu: armv7l 2026-03-20T07:28:55,715 Program python found: YES (/usr/bin/python3) 2026-03-20T07:28:55,716 Found pkg-config: YES (/usr/bin/pkg-config) 1.8.1 2026-03-20T07:28:55,717 Found CMake: /usr/bin/cmake (3.25.1) 2026-03-20T07:28:55,718 Run-time dependency ensmallen found: NO (tried pkgconfig and cmake) 2026-03-20T07:28:55,719 ../meson.build:11:16: ERROR: Dependency "ensmallen" not found, tried pkgconfig and cmake 2026-03-20T07:28:55,721 A full log can be found at /tmp/pip-wheel-pu0zahxc/pyensmallen_66872765ea1f4cc6ab9be7f7f0e6fd5f/.mesonpy-o4jvem19/meson-logs/meson-log.txt 2026-03-20T07:28:55,947 ERROR: [present-rich] Preparing metadata (pyproject.toml) exited with 1 2026-03-20T07:28:55,960 [bold magenta]full command[/]: [blue]/usr/bin/python3 /usr/lib/python3/dist-packages/pip/_vendor/pyproject_hooks/_in_process/_in_process.py prepare_metadata_for_build_wheel /tmp/tmpfcbi070a[/] 2026-03-20T07:28:55,961 [bold magenta]cwd[/]: /tmp/pip-wheel-pu0zahxc/pyensmallen_66872765ea1f4cc6ab9be7f7f0e6fd5f 2026-03-20T07:28:55,961 Preparing metadata (pyproject.toml): finished with status 'error' 2026-03-20T07:28:55,963 ERROR: [present-rich] metadata generation failed 2026-03-20T07:28:55,969 Exception information: 2026-03-20T07:28:55,969 Traceback (most recent call last): 2026-03-20T07:28:55,969 File "/usr/lib/python3/dist-packages/pip/_internal/operations/build/metadata.py", line 35, in generate_metadata 2026-03-20T07:28:55,969 distinfo_dir = backend.prepare_metadata_for_build_wheel(metadata_dir) 2026-03-20T07:28:55,969 ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ 2026-03-20T07:28:55,969 File "/usr/lib/python3/dist-packages/pip/_internal/utils/misc.py", line 746, in prepare_metadata_for_build_wheel 2026-03-20T07:28:55,969 return super().prepare_metadata_for_build_wheel( 2026-03-20T07:28:55,969 ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ 2026-03-20T07:28:55,969 File "/usr/lib/python3/dist-packages/pip/_vendor/pyproject_hooks/_impl.py", line 186, in prepare_metadata_for_build_wheel 2026-03-20T07:28:55,969 return self._call_hook('prepare_metadata_for_build_wheel', { 2026-03-20T07:28:55,969 ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ 2026-03-20T07:28:55,969 File "/usr/lib/python3/dist-packages/pip/_vendor/pyproject_hooks/_impl.py", line 311, in _call_hook 2026-03-20T07:28:55,969 self._subprocess_runner( 2026-03-20T07:28:55,969 File "/usr/lib/python3/dist-packages/pip/_internal/utils/subprocess.py", line 252, in runner 2026-03-20T07:28:55,969 call_subprocess( 2026-03-20T07:28:55,969 File "/usr/lib/python3/dist-packages/pip/_internal/utils/subprocess.py", line 224, in call_subprocess 2026-03-20T07:28:55,969 raise error 2026-03-20T07:28:55,969 pip._internal.exceptions.InstallationSubprocessError: Preparing metadata (pyproject.toml) exited with 1 2026-03-20T07:28:55,969 2026-03-20T07:28:55,969 The above exception was the direct cause of the following exception: 2026-03-20T07:28:55,969 2026-03-20T07:28:55,969 Traceback (most recent call last): 2026-03-20T07:28:55,969 File "/usr/lib/python3/dist-packages/pip/_internal/cli/base_command.py", line 160, in exc_logging_wrapper 2026-03-20T07:28:55,969 status = run_func(*args) 2026-03-20T07:28:55,969 ^^^^^^^^^^^^^^^ 2026-03-20T07:28:55,969 File "/usr/lib/python3/dist-packages/pip/_internal/cli/req_command.py", line 247, in wrapper 2026-03-20T07:28:55,969 return func(self, options, args) 2026-03-20T07:28:55,969 ^^^^^^^^^^^^^^^^^^^^^^^^^ 2026-03-20T07:28:55,969 File "/usr/lib/python3/dist-packages/pip/_internal/commands/wheel.py", line 170, in run 2026-03-20T07:28:55,969 requirement_set = resolver.resolve(reqs, check_supported_wheels=True) 2026-03-20T07:28:55,969 ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ 2026-03-20T07:28:55,969 File "/usr/lib/python3/dist-packages/pip/_internal/resolution/resolvelib/resolver.py", line 92, in resolve 2026-03-20T07:28:55,969 result = self._result = resolver.resolve( 2026-03-20T07:28:55,969 ^^^^^^^^^^^^^^^^^ 2026-03-20T07:28:55,969 File "/usr/lib/python3/dist-packages/pip/_vendor/resolvelib/resolvers.py", line 481, in resolve 2026-03-20T07:28:55,969 state = resolution.resolve(requirements, max_rounds=max_rounds) 2026-03-20T07:28:55,969 ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ 2026-03-20T07:28:55,969 File "/usr/lib/python3/dist-packages/pip/_vendor/resolvelib/resolvers.py", line 348, in resolve 2026-03-20T07:28:55,969 self._add_to_criteria(self.state.criteria, r, parent=None) 2026-03-20T07:28:55,969 File "/usr/lib/python3/dist-packages/pip/_vendor/resolvelib/resolvers.py", line 172, in _add_to_criteria 2026-03-20T07:28:55,969 if not criterion.candidates: 2026-03-20T07:28:55,969 File "/usr/lib/python3/dist-packages/pip/_vendor/resolvelib/structs.py", line 151, in __bool__ 2026-03-20T07:28:55,969 return bool(self._sequence) 2026-03-20T07:28:55,969 ^^^^^^^^^^^^^^^^^^^^ 2026-03-20T07:28:55,969 File "/usr/lib/python3/dist-packages/pip/_internal/resolution/resolvelib/found_candidates.py", line 155, in __bool__ 2026-03-20T07:28:55,969 return any(self) 2026-03-20T07:28:55,969 ^^^^^^^^^ 2026-03-20T07:28:55,969 File "/usr/lib/python3/dist-packages/pip/_internal/resolution/resolvelib/found_candidates.py", line 143, in 2026-03-20T07:28:55,969 return (c for c in iterator if id(c) not in self._incompatible_ids) 2026-03-20T07:28:55,969 ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ 2026-03-20T07:28:55,969 File "/usr/lib/python3/dist-packages/pip/_internal/resolution/resolvelib/found_candidates.py", line 47, in _iter_built 2026-03-20T07:28:55,969 candidate = func() 2026-03-20T07:28:55,969 ^^^^^^ 2026-03-20T07:28:55,969 File "/usr/lib/python3/dist-packages/pip/_internal/resolution/resolvelib/factory.py", line 206, in _make_candidate_from_link 2026-03-20T07:28:55,969 self._link_candidate_cache[link] = LinkCandidate( 2026-03-20T07:28:55,969 ^^^^^^^^^^^^^^ 2026-03-20T07:28:55,969 File "/usr/lib/python3/dist-packages/pip/_internal/resolution/resolvelib/candidates.py", line 297, in __init__ 2026-03-20T07:28:55,969 super().__init__( 2026-03-20T07:28:55,969 File "/usr/lib/python3/dist-packages/pip/_internal/resolution/resolvelib/candidates.py", line 162, in __init__ 2026-03-20T07:28:55,969 self.dist = self._prepare() 2026-03-20T07:28:55,969 ^^^^^^^^^^^^^^^ 2026-03-20T07:28:55,969 File "/usr/lib/python3/dist-packages/pip/_internal/resolution/resolvelib/candidates.py", line 231, in _prepare 2026-03-20T07:28:55,969 dist = self._prepare_distribution() 2026-03-20T07:28:55,969 ^^^^^^^^^^^^^^^^^^^^^^^^^^^^ 2026-03-20T07:28:55,969 File "/usr/lib/python3/dist-packages/pip/_internal/resolution/resolvelib/candidates.py", line 308, in _prepare_distribution 2026-03-20T07:28:55,969 return preparer.prepare_linked_requirement(self._ireq, parallel_builds=True) 2026-03-20T07:28:55,969 ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ 2026-03-20T07:28:55,969 File "/usr/lib/python3/dist-packages/pip/_internal/operations/prepare.py", line 491, in prepare_linked_requirement 2026-03-20T07:28:55,969 return self._prepare_linked_requirement(req, parallel_builds) 2026-03-20T07:28:55,969 ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ 2026-03-20T07:28:55,969 File "/usr/lib/python3/dist-packages/pip/_internal/operations/prepare.py", line 577, in _prepare_linked_requirement 2026-03-20T07:28:55,969 dist = _get_prepared_distribution( 2026-03-20T07:28:55,969 ^^^^^^^^^^^^^^^^^^^^^^^^^^^ 2026-03-20T07:28:55,969 File "/usr/lib/python3/dist-packages/pip/_internal/operations/prepare.py", line 69, in _get_prepared_distribution 2026-03-20T07:28:55,969 abstract_dist.prepare_distribution_metadata( 2026-03-20T07:28:55,969 File "/usr/lib/python3/dist-packages/pip/_internal/distributions/sdist.py", line 61, in prepare_distribution_metadata 2026-03-20T07:28:55,969 self.req.prepare_metadata() 2026-03-20T07:28:55,969 File "/usr/lib/python3/dist-packages/pip/_internal/req/req_install.py", line 539, in prepare_metadata 2026-03-20T07:28:55,969 self.metadata_directory = generate_metadata( 2026-03-20T07:28:55,969 ^^^^^^^^^^^^^^^^^^ 2026-03-20T07:28:55,969 File "/usr/lib/python3/dist-packages/pip/_internal/operations/build/metadata.py", line 37, in generate_metadata 2026-03-20T07:28:55,969 raise MetadataGenerationFailed(package_details=details) from error 2026-03-20T07:28:55,969 pip._internal.exceptions.MetadataGenerationFailed: metadata generation failed 2026-03-20T07:28:55,985 Removed pyensmallen==0.4.5 from https://files.pythonhosted.org/packages/0a/f1/2d4c87f7cc7a1d34ede0189d360d1388d3d89084ae96a448d14fd5fded2b/pyensmallen-0.4.5.tar.gz from build tracker '/tmp/pip-build-tracker-2k8a0b1k' 2026-03-20T07:28:55,986 Removed build tracker: '/tmp/pip-build-tracker-2k8a0b1k'