2025-09-08T16:00:23,884 Created temporary directory: /tmp/pip-build-tracker-cb_f_v3r
2025-09-08T16:00:23,885 Initialized build tracking at /tmp/pip-build-tracker-cb_f_v3r
2025-09-08T16:00:23,885 Created build tracker: /tmp/pip-build-tracker-cb_f_v3r
2025-09-08T16:00:23,885 Entered build tracker: /tmp/pip-build-tracker-cb_f_v3r
2025-09-08T16:00:23,886 Created temporary directory: /tmp/pip-wheel-74sthh_v
2025-09-08T16:00:23,889 Created temporary directory: /tmp/pip-ephem-wheel-cache-ml95870n
2025-09-08T16:00:23,947 Looking in indexes: https://pypi.org/simple, https://www.piwheels.org/simple
2025-09-08T16:00:23,949 2 location(s) to search for versions of backend-ai:
2025-09-08T16:00:23,949 * https://pypi.org/simple/backend-ai/
2025-09-08T16:00:23,949 * https://www.piwheels.org/simple/backend-ai/
2025-09-08T16:00:23,950 Fetching project page and analyzing links: https://pypi.org/simple/backend-ai/
2025-09-08T16:00:23,950 Getting page https://pypi.org/simple/backend-ai/
2025-09-08T16:00:23,951 Found index url https://pypi.org/simple/
2025-09-08T16:00:24,021 Fetched page https://pypi.org/simple/backend-ai/ as application/vnd.pypi.simple.v1+json
2025-09-08T16:00:24,025   Skipping link: No binaries permitted for backend-ai: https://files.pythonhosted.org/packages/75/43/a3fa3eb9d8fd8b07a4d4850f39c5c566d4661816aa010dc0dd2e3eaf762a/backend.ai-1.0.0-py3-none-any.whl (from https://pypi.org/simple/backend-ai/) (requires-python:>=3.6)
2025-09-08T16:00:24,025   Found link https://files.pythonhosted.org/packages/44/7e/700c2d87a9f8c39b45bc9eb3aa915ebc430b4d9ce0907eb26fb7567dac7d/backend.ai-1.0.0.tar.gz (from https://pypi.org/simple/backend-ai/) (requires-python:>=3.6), version: 1.0.0
2025-09-08T16:00:24,026   Skipping link: No binaries permitted for backend-ai: https://files.pythonhosted.org/packages/3f/ac/2c5d71ec582b8c858c9448ab13805b1df9a95cfbbb7e92c5670edb70a448/backend.ai-1.0.1-py3-none-any.whl (from https://pypi.org/simple/backend-ai/) (requires-python:>=3.6)
2025-09-08T16:00:24,026   Found link https://files.pythonhosted.org/packages/f3/a1/70efa593ad2e61c122ebc3d4d749dc3657554e7b5eb9eba657d58f3ce4f8/backend.ai-1.0.1.tar.gz (from https://pypi.org/simple/backend-ai/) (requires-python:>=3.6), version: 1.0.1
2025-09-08T16:00:24,026   Skipping link: No binaries permitted for backend-ai: https://files.pythonhosted.org/packages/7a/43/2ad424f0f5c7bdb3c3d815c2ed7d9601ba0652f600d4fed8934c0895bfc6/backend.ai-1.0.2-py36-none-any.whl (from https://pypi.org/simple/backend-ai/) (requires-python:>=3.6)
2025-09-08T16:00:24,026   Found link https://files.pythonhosted.org/packages/6a/84/542120d584cfe71fb05d2c3a71f0ea0587ecb31a12f98006640d2ed2de79/backend.ai-1.0.2.tar.gz (from https://pypi.org/simple/backend-ai/) (requires-python:>=3.6), version: 1.0.2
2025-09-08T16:00:24,026   Skipping link: No binaries permitted for backend-ai: https://files.pythonhosted.org/packages/af/10/4fc50be0a72fda18f072bd200fd9a7a81d59cb56b080ee1711dc3fc1fd2b/backend.ai-1.1.0-py36-none-any.whl (from https://pypi.org/simple/backend-ai/) (requires-python:>=3.6)
2025-09-08T16:00:24,027   Found link https://files.pythonhosted.org/packages/9d/b6/b90cc495899fc3f4cb10a72ca44ea66f0c7f9f52556ce2dfb979f74d6f60/backend.ai-1.1.0.tar.gz (from https://pypi.org/simple/backend-ai/) (requires-python:>=3.6), version: 1.1.0
2025-09-08T16:00:24,027   Skipping link: No binaries permitted for backend-ai: https://files.pythonhosted.org/packages/1b/be/4f51414b16554a64be0cc46969157fc441a67241197a617d07d688ef6422/backend.ai-1.2.0-py36-none-any.whl (from https://pypi.org/simple/backend-ai/) (requires-python:>=3.6)
2025-09-08T16:00:24,027   Found link https://files.pythonhosted.org/packages/e9/b3/2814f0bc31df93663db0dd38f306b4ceca73fc856844dc23bb1b9090368b/backend.ai-1.2.0.tar.gz (from https://pypi.org/simple/backend-ai/) (requires-python:>=3.6), version: 1.2.0
2025-09-08T16:00:24,027   Skipping link: No binaries permitted for backend-ai: https://files.pythonhosted.org/packages/b9/fc/54bd268ebdc77c993cac78bc484cd58464fd6531245c57d8b887d134f7a2/backend.ai-1.3.0-py36-none-any.whl (from https://pypi.org/simple/backend-ai/) (requires-python:>=3.6)
2025-09-08T16:00:24,027   Found link https://files.pythonhosted.org/packages/57/61/fcd06a9b1b7b37722c61217718dd7a3ba4573ab1ffb488f11f081cf7463c/backend.ai-1.3.0.tar.gz (from https://pypi.org/simple/backend-ai/) (requires-python:>=3.6), version: 1.3.0
2025-09-08T16:00:24,027   Skipping link: No binaries permitted for backend-ai: https://files.pythonhosted.org/packages/cf/70/6525652be7fba407cebd61023a8a5ac300ef0b89f295d17f1d61f511265d/backend.ai-1.4.0-py3-none-any.whl (from https://pypi.org/simple/backend-ai/) (requires-python:>=3.6,<3.7)
2025-09-08T16:00:24,028   Link requires a different Python (3.13.5 not in: '>=3.6,<3.7'): https://files.pythonhosted.org/packages/2c/bb/8ae51b2b93447ed1c7617304a1fb6f7c40b84647bce9c6d56c970972d303/backend.ai-1.4.0.tar.gz (from https://pypi.org/simple/backend-ai/) (requires-python:>=3.6,<3.7)
2025-09-08T16:00:24,028   Skipping link: 1.4.0 Requires-Python >=3.6,<3.7: https://files.pythonhosted.org/packages/2c/bb/8ae51b2b93447ed1c7617304a1fb6f7c40b84647bce9c6d56c970972d303/backend.ai-1.4.0.tar.gz (from https://pypi.org/simple/backend-ai/) (requires-python:>=3.6,<3.7)
2025-09-08T16:00:24,028   Skipping link: No binaries permitted for backend-ai: https://files.pythonhosted.org/packages/cf/3b/c5fa6847306c6d9da72edd1f7b9af6c0aaac3ff068550051230b187e3555/backend.ai-18.12.0-py3-none-any.whl (from https://pypi.org/simple/backend-ai/) (requires-python:>=3.6,<3.7)
2025-09-08T16:00:24,029   Link requires a different Python (3.13.5 not in: '>=3.6,<3.7'): https://files.pythonhosted.org/packages/15/d8/6ab1830286fa025b2acacff654eb631c9252af25dd65e17b8863f1b750bd/backend.ai-18.12.0.tar.gz (from https://pypi.org/simple/backend-ai/) (requires-python:>=3.6,<3.7)
2025-09-08T16:00:24,029   Skipping link: 18.12.0 Requires-Python >=3.6,<3.7: https://files.pythonhosted.org/packages/15/d8/6ab1830286fa025b2acacff654eb631c9252af25dd65e17b8863f1b750bd/backend.ai-18.12.0.tar.gz (from https://pypi.org/simple/backend-ai/) (requires-python:>=3.6,<3.7)
2025-09-08T16:00:24,029   Skipping link: No binaries permitted for backend-ai: https://files.pythonhosted.org/packages/6e/2c/053ed8d57d0136a801a821a5a74aa40d1350463c3b6594a5060319193dd0/backend.ai-19.3.0a1-py3-none-any.whl (from https://pypi.org/simple/backend-ai/) (requires-python:>=3.6,<3.7)
2025-09-08T16:00:24,029   Link requires a different Python (3.13.5 not in: '>=3.6,<3.7'): https://files.pythonhosted.org/packages/3c/43/72575d38051a022bfed0c451bfaa27bafa1e74ad24fbf05dfd56f2672700/backend.ai-19.3.0a1.tar.gz (from https://pypi.org/simple/backend-ai/) (requires-python:>=3.6,<3.7)
2025-09-08T16:00:24,029   Skipping link: 19.3.0a1 Requires-Python >=3.6,<3.7: https://files.pythonhosted.org/packages/3c/43/72575d38051a022bfed0c451bfaa27bafa1e74ad24fbf05dfd56f2672700/backend.ai-19.3.0a1.tar.gz (from https://pypi.org/simple/backend-ai/) (requires-python:>=3.6,<3.7)
2025-09-08T16:00:24,029   Skipping link: No binaries permitted for backend-ai: https://files.pythonhosted.org/packages/58/6c/42cd2fb6abaf364b6d2592b1d1ed9a1e2d72d310a5844e8372a1da5a5c37/backend.ai-19.3.0-py3-none-any.whl (from https://pypi.org/simple/backend-ai/) (requires-python:>=3.6,<3.7)
2025-09-08T16:00:24,029   Link requires a different Python (3.13.5 not in: '>=3.6,<3.7'): https://files.pythonhosted.org/packages/92/bb/8eeb46619c5e568e29f8a5fe74cf31975df9ba7a915a26b42b96ed0bcf8e/backend.ai-19.3.0.tar.gz (from https://pypi.org/simple/backend-ai/) (requires-python:>=3.6,<3.7)
2025-09-08T16:00:24,029   Skipping link: 19.3.0 Requires-Python >=3.6,<3.7: https://files.pythonhosted.org/packages/92/bb/8eeb46619c5e568e29f8a5fe74cf31975df9ba7a915a26b42b96ed0bcf8e/backend.ai-19.3.0.tar.gz (from https://pypi.org/simple/backend-ai/) (requires-python:>=3.6,<3.7)
2025-09-08T16:00:24,030   Skipping link: No binaries permitted for backend-ai: https://files.pythonhosted.org/packages/d4/ba/2d2fdd57aba7b8122b30ab6be38389af0d55c23bec327d48352b562a9978/backend.ai-19.9.0-py3-none-any.whl (from https://pypi.org/simple/backend-ai/) (requires-python:<3.7,>=3.6)
2025-09-08T16:00:24,030   Link requires a different Python (3.13.5 not in: '<3.7,>=3.6'): https://files.pythonhosted.org/packages/10/47/b38f9a267d406b19a97ae913bc2ca1f4dd405f029c060da104c81a8f10a5/backend.ai-19.9.0.tar.gz (from https://pypi.org/simple/backend-ai/) (requires-python:<3.7,>=3.6)
2025-09-08T16:00:24,030   Skipping link: 19.9.0 Requires-Python <3.7,>=3.6: https://files.pythonhosted.org/packages/10/47/b38f9a267d406b19a97ae913bc2ca1f4dd405f029c060da104c81a8f10a5/backend.ai-19.9.0.tar.gz (from https://pypi.org/simple/backend-ai/) (requires-python:<3.7,>=3.6)
2025-09-08T16:00:24,031   Skipping link: No binaries permitted for backend-ai: https://files.pythonhosted.org/packages/ce/c6/cbd6390f4ff547e16ff300bd902569105c088077a3a064918de4f6245298/backend.ai-20.3.0-py3-none-any.whl (from https://pypi.org/simple/backend-ai/) (requires-python:>=3.8)
2025-09-08T16:00:24,031   Found link https://files.pythonhosted.org/packages/53/f0/4394b80c944869eafa8169b50e718b2680273fc3b25cae4eb618d4b5c725/backend.ai-20.3.0.tar.gz (from https://pypi.org/simple/backend-ai/) (requires-python:>=3.8), version: 20.3.0
2025-09-08T16:00:24,031   Skipping link: No binaries permitted for backend-ai: https://files.pythonhosted.org/packages/cd/85/935ad27ec652dd411761e3c603a064d9c0ff9a7faecfecf089c4cf38a322/backend.ai-20.3.1-py3-none-any.whl (from https://pypi.org/simple/backend-ai/) (requires-python:>=3.8)
2025-09-08T16:00:24,031   Found link https://files.pythonhosted.org/packages/20/98/5d9d899d0508ac8df416b5820465269abfab6abb664bd9ccfd02f3aef3cc/backend.ai-20.3.1.tar.gz (from https://pypi.org/simple/backend-ai/) (requires-python:>=3.8), version: 20.3.1
2025-09-08T16:00:24,032   Skipping link: No binaries permitted for backend-ai: https://files.pythonhosted.org/packages/6a/6e/406ca58a9536e237940bab38bb124dcbc3689b010605220d6f792f8594ca/backend.ai-20.9.0a1.dev0-py3-none-any.whl (from https://pypi.org/simple/backend-ai/) (requires-python:>=3.8)
2025-09-08T16:00:24,032   Found link https://files.pythonhosted.org/packages/48/fb/6b14382a3204d67713eea90e19896455136ade66c27ae67c6d907ec3f375/backend.ai-20.9.0a1.dev0.tar.gz (from https://pypi.org/simple/backend-ai/) (requires-python:>=3.8), version: 20.9.0a1.dev0
2025-09-08T16:00:24,032   Skipping link: No binaries permitted for backend-ai: https://files.pythonhosted.org/packages/c0/a5/8eb49ffc0d90abfdc9e4a730ece5848287bb03035b444c5132fef8d89b5a/backend.ai-20.9.0-py3-none-any.whl (from https://pypi.org/simple/backend-ai/) (requires-python:>=3.8)
2025-09-08T16:00:24,032   Found link https://files.pythonhosted.org/packages/14/a2/42b7daf42e42769016355321794afb46b9e9321107e01e96fd2baacd6bf5/backend.ai-20.9.0.tar.gz (from https://pypi.org/simple/backend-ai/) (requires-python:>=3.8), version: 20.9.0
2025-09-08T16:00:24,032   Skipping link: No binaries permitted for backend-ai: https://files.pythonhosted.org/packages/f1/5a/8923a643356387aad017a2c16f6372494dd93c67d4e5362b833a0070385e/backend.ai-21.3.0-py3-none-any.whl (from https://pypi.org/simple/backend-ai/) (requires-python:>=3.8)
2025-09-08T16:00:24,033   Found link https://files.pythonhosted.org/packages/56/17/15ad688337136a9944a4f61e5ff1a551809f9c6ef7b7a9f1726e5186837a/backend.ai-21.3.0.tar.gz (from https://pypi.org/simple/backend-ai/) (requires-python:>=3.8), version: 21.3.0
2025-09-08T16:00:24,033   Skipping link: No binaries permitted for backend-ai: https://files.pythonhosted.org/packages/84/6d/6119e4825985dc589d377e2e4400c333c4c63ff53f76d71affa128f75f71/backend.ai-22.3.0-py3-none-any.whl (from https://pypi.org/simple/backend-ai/) (requires-python:>=3.9)
2025-09-08T16:00:24,033   Found link https://files.pythonhosted.org/packages/5c/f4/5fbde54fe469c9cabadeb299685fe849a4dd42a98e8e04f3d5d1a557ef95/backend.ai-22.3.0.tar.gz (from https://pypi.org/simple/backend-ai/) (requires-python:>=3.9), version: 22.3.0
2025-09-08T16:00:24,034 Fetching project page and analyzing links: https://www.piwheels.org/simple/backend-ai/
2025-09-08T16:00:24,034 Getting page https://www.piwheels.org/simple/backend-ai/
2025-09-08T16:00:24,035 Found index url https://www.piwheels.org/simple/
2025-09-08T16:00:24,123 Fetched page https://www.piwheels.org/simple/backend-ai/ as text/html
2025-09-08T16:00:24,128   Skipping link: No binaries permitted for backend-ai: https://archive1.piwheels.org/simple/backend-ai/backend.ai-22.3.0-py3-none-any.whl#sha256=6a54b25d5704dd1cf149c3075699aeb3eccc0cdbfafaf0d250cfb5e8e2bbcefe (from https://www.piwheels.org/simple/backend-ai/) (requires-python:>=3.9)
2025-09-08T16:00:24,128   Skipping link: No binaries permitted for backend-ai: https://archive1.piwheels.org/simple/backend-ai/backend.ai-21.3.0-py3-none-any.whl#sha256=3e25fb96ce645ed1111b216d3aa2e18d442dbb97c2beee69f0f61d3847761184 (from https://www.piwheels.org/simple/backend-ai/) (requires-python:>=3.8)
2025-09-08T16:00:24,128   Skipping link: No binaries permitted for backend-ai: https://archive1.piwheels.org/simple/backend-ai/backend.ai-20.9.0-py3-none-any.whl#sha256=86fa495bfef4d77cac6d35bd5dc8c929cbf15a376ed8ce6b553ee8dd5dd9b95d (from https://www.piwheels.org/simple/backend-ai/) (requires-python:>=3.8)
2025-09-08T16:00:24,129   Skipping link: No binaries permitted for backend-ai: https://archive1.piwheels.org/simple/backend-ai/backend.ai-20.9.0a1.dev0-py3-none-any.whl#sha256=1f24e1599bf129f787f545306cc20b4cf5ad3e11873d5bfa8f8532954b7fafe5 (from https://www.piwheels.org/simple/backend-ai/) (requires-python:>=3.8)
2025-09-08T16:00:24,129   Skipping link: No binaries permitted for backend-ai: https://archive1.piwheels.org/simple/backend-ai/backend.ai-20.3.1-py3-none-any.whl#sha256=8935b26bc067b89ac6d2187c9fc53416d08d9a8a48b7608e6b24d638f84e46e2 (from https://www.piwheels.org/simple/backend-ai/) (requires-python:>=3.8)
2025-09-08T16:00:24,129   Skipping link: No binaries permitted for backend-ai: https://archive1.piwheels.org/simple/backend-ai/backend.ai-20.3.0-py3-none-any.whl#sha256=bd6211d661a8a095671bf3189a0514dee1ffe4cdb8f9e8322e2e6588cd44aeae (from https://www.piwheels.org/simple/backend-ai/) (requires-python:>=3.8)
2025-09-08T16:00:24,129   Skipping link: No binaries permitted for backend-ai: https://archive1.piwheels.org/simple/backend-ai/backend.ai-1.3.0-py36-none-any.whl#sha256=00de3df01230312728142bfe99e3e80826a5a7be1e5db871f98a0aa05b413c70 (from https://www.piwheels.org/simple/backend-ai/) (requires-python:>=3.6)
2025-09-08T16:00:24,129   Skipping link: No binaries permitted for backend-ai: https://archive1.piwheels.org/simple/backend-ai/backend.ai-1.2.0-py36-none-any.whl#sha256=9e9ad0c90ab28718ab5db0608746b546c2805b6ec889e230150baec0b15d4d68 (from https://www.piwheels.org/simple/backend-ai/) (requires-python:>=3.6)
2025-09-08T16:00:24,129   Skipping link: No binaries permitted for backend-ai: https://archive1.piwheels.org/simple/backend-ai/backend.ai-1.1.0-py36-none-any.whl#sha256=e1ba29ac35bd920cde9801e59667d109c870e43353ad9cdfb5b3df55ada7c9e9 (from https://www.piwheels.org/simple/backend-ai/) (requires-python:>=3.6)
2025-09-08T16:00:24,129   Skipping link: No binaries permitted for backend-ai: https://archive1.piwheels.org/simple/backend-ai/backend.ai-1.0.2-py36-none-any.whl#sha256=fefe83ae5820f88c4441b5dbbb40004a834bd14e6399d1d053c34f1185d8f5ef (from https://www.piwheels.org/simple/backend-ai/) (requires-python:>=3.6)
2025-09-08T16:00:24,130   Skipping link: No binaries permitted for backend-ai: https://archive1.piwheels.org/simple/backend-ai/backend.ai-1.0.1-py3-none-any.whl#sha256=2fd3058f5e41165a14098ebe6639c57ea04bab00df6f958fc7a701f18552d88f (from https://www.piwheels.org/simple/backend-ai/) (requires-python:>=3.6)
2025-09-08T16:00:24,130   Skipping link: No binaries permitted for backend-ai: https://archive1.piwheels.org/simple/backend-ai/backend.ai-1.0.0-py3-none-any.whl#sha256=ffe7e032f222497a3e5adeb60731bc60788aba32235b0d2d8e34cae148be09f8 (from https://www.piwheels.org/simple/backend-ai/) (requires-python:>=3.6)
2025-09-08T16:00:24,130 Skipping link: not a file: https://www.piwheels.org/simple/backend-ai/
2025-09-08T16:00:24,130 Skipping link: not a file: https://pypi.org/simple/backend-ai/
2025-09-08T16:00:24,155 Given no hashes to check 0 links for project 'backend-ai': discarding no candidates
2025-09-08T16:00:24,156 ERROR: Ignored the following versions that require a different python version: 1.4.0 Requires-Python >=3.6,<3.7; 18.12.0 Requires-Python >=3.6,<3.7; 19.3.0 Requires-Python >=3.6,<3.7; 19.3.0a1 Requires-Python >=3.6,<3.7; 19.9.0 Requires-Python <3.7,>=3.6
2025-09-08T16:00:24,157 ERROR: Could not find a version that satisfies the requirement backend-ai==19.3.0a1 (from versions: 1.0.0, 1.0.1, 1.0.2, 1.1.0, 1.2.0, 1.3.0, 20.3.0, 20.3.1, 20.9.0a1.dev0, 20.9.0, 21.3.0, 22.3.0)
2025-09-08T16:00:24,158 ERROR: No matching distribution found for backend-ai==19.3.0a1
2025-09-08T16:00:24,159 Exception information:
2025-09-08T16:00:24,159 Traceback (most recent call last):
2025-09-08T16:00:24,159   File "/usr/lib/python3/dist-packages/pip/_vendor/resolvelib/resolvers/resolution.py", line 388, in resolve
2025-09-08T16:00:24,159     self._add_to_criteria(self.state.criteria, r, parent=None)
2025-09-08T16:00:24,159     ~~~~~~~~~~~~~~~~~~~~~^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
2025-09-08T16:00:24,159   File "/usr/lib/python3/dist-packages/pip/_vendor/resolvelib/resolvers/resolution.py", line 142, in _add_to_criteria
2025-09-08T16:00:24,159     raise RequirementsConflicted(criterion)
2025-09-08T16:00:24,159 pip._vendor.resolvelib.resolvers.exceptions.RequirementsConflicted: Requirements conflict: SpecifierRequirement('backend-ai==19.3.0a1')
2025-09-08T16:00:24,159 
2025-09-08T16:00:24,159 The above exception was the direct cause of the following exception:
2025-09-08T16:00:24,159 
2025-09-08T16:00:24,159 Traceback (most recent call last):
2025-09-08T16:00:24,159   File "/usr/lib/python3/dist-packages/pip/_internal/resolution/resolvelib/resolver.py", line 96, in resolve
2025-09-08T16:00:24,159     result = self._result = resolver.resolve(
2025-09-08T16:00:24,159                             ~~~~~~~~~~~~~~~~^
2025-09-08T16:00:24,159         collected.requirements, max_rounds=limit_how_complex_resolution_can_be
2025-09-08T16:00:24,159         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
2025-09-08T16:00:24,159     )
2025-09-08T16:00:24,159     ^
2025-09-08T16:00:24,159   File "/usr/lib/python3/dist-packages/pip/_vendor/resolvelib/resolvers/resolution.py", line 515, in resolve
2025-09-08T16:00:24,159     state = resolution.resolve(requirements, max_rounds=max_rounds)
2025-09-08T16:00:24,159   File "/usr/lib/python3/dist-packages/pip/_vendor/resolvelib/resolvers/resolution.py", line 390, in resolve
2025-09-08T16:00:24,159     raise ResolutionImpossible(e.criterion.information) from e
2025-09-08T16:00:24,159 pip._vendor.resolvelib.resolvers.exceptions.ResolutionImpossible: [RequirementInformation(requirement=SpecifierRequirement('backend-ai==19.3.0a1'), parent=None)]
2025-09-08T16:00:24,159 
2025-09-08T16:00:24,159 The above exception was the direct cause of the following exception:
2025-09-08T16:00:24,159 
2025-09-08T16:00:24,159 Traceback (most recent call last):
2025-09-08T16:00:24,159   File "/usr/lib/python3/dist-packages/pip/_internal/cli/base_command.py", line 105, in _run_wrapper
2025-09-08T16:00:24,159     status = _inner_run()
2025-09-08T16:00:24,159   File "/usr/lib/python3/dist-packages/pip/_internal/cli/base_command.py", line 96, in _inner_run
2025-09-08T16:00:24,159     return self.run(options, args)
2025-09-08T16:00:24,159            ~~~~~~~~^^^^^^^^^^^^^^^
2025-09-08T16:00:24,159   File "/usr/lib/python3/dist-packages/pip/_internal/cli/req_command.py", line 68, in wrapper
2025-09-08T16:00:24,159     return func(self, options, args)
2025-09-08T16:00:24,159   File "/usr/lib/python3/dist-packages/pip/_internal/commands/wheel.py", line 147, in run
2025-09-08T16:00:24,159     requirement_set = resolver.resolve(reqs, check_supported_wheels=True)
2025-09-08T16:00:24,159   File "/usr/lib/python3/dist-packages/pip/_internal/resolution/resolvelib/resolver.py", line 105, in resolve
2025-09-08T16:00:24,159     raise error from e
2025-09-08T16:00:24,159 pip._internal.exceptions.DistributionNotFound: No matching distribution found for backend-ai==19.3.0a1
2025-09-08T16:00:24,168 Removed build tracker: '/tmp/pip-build-tracker-cb_f_v3r'