2021-04-04T11:53:37,298 Created temporary directory: /tmp/pip-ephem-wheel-cache-nhnkznmh
2021-04-04T11:53:37,301 Created temporary directory: /tmp/pip-req-tracker-3bckpj6d
2021-04-04T11:53:37,302 Initialized build tracking at /tmp/pip-req-tracker-3bckpj6d
2021-04-04T11:53:37,302 Created build tracker: /tmp/pip-req-tracker-3bckpj6d
2021-04-04T11:53:37,302 Entered build tracker: /tmp/pip-req-tracker-3bckpj6d
2021-04-04T11:53:37,303 Created temporary directory: /tmp/pip-wheel-6s6bxcd0
2021-04-04T11:53:37,334 1 location(s) to search for versions of backend-ai-webserver:
2021-04-04T11:53:37,334 * https://pypi.org/simple/backend-ai-webserver/
2021-04-04T11:53:37,335 Fetching project page and analyzing links: https://pypi.org/simple/backend-ai-webserver/
2021-04-04T11:53:37,335 Getting page https://pypi.org/simple/backend-ai-webserver/
2021-04-04T11:53:37,337 Found index url https://pypi.org/simple
2021-04-04T11:53:37,431   Found link https://files.pythonhosted.org/packages/d0/1b/f004aa2a5d68b5cff60a57031eb65b64127a3d78265d0ed43e9df634d00d/backend.ai-webserver-20.9.8.tar.gz#sha256=4d99f3b9be4dba36606cc1081b714b5aff1e8db655242d6c369a25f5a7530e02 (from https://pypi.org/simple/backend-ai-webserver/) (requires-python:>=3.7), version: 20.9.8
2021-04-04T11:53:37,445   Found link https://files.pythonhosted.org/packages/4b/d1/c91e3e9a97bb92cfa1db30e5049828384a2e0a3ef31f5cfc58f32d71dc2e/backend.ai_webserver-20.9.8-py3-none-any.whl#sha256=e6e7b6c4e1ccd92b02d78cb5f1cbef45bef821adcad8181b5fa80d700713e7e6 (from https://pypi.org/simple/backend-ai-webserver/) (requires-python:>=3.7), version: 20.9.8
2021-04-04T11:53:37,446   Found link https://files.pythonhosted.org/packages/9f/62/a299887bb3b80e59c2c159355fbd66f6626a8b3ca1991702614944b53c0e/backend.ai-webserver-20.9.9.tar.gz#sha256=498cb2ea83a8eba97adf4b3f7a3c0a46129bbeceb6a3e13813b1ec03b141416b (from https://pypi.org/simple/backend-ai-webserver/) (requires-python:>=3.7), version: 20.9.9
2021-04-04T11:53:37,447   Found link https://files.pythonhosted.org/packages/c8/41/cef5b060ac213e40cb56d42526f4cd18553c6eeaff6fc36e421d1ed5ea94/backend.ai_webserver-20.9.9-py3-none-any.whl#sha256=f681d3febe862d1b261b945d816e9cfb71874e8be363a10bb5a8e5bfe2ad0487 (from https://pypi.org/simple/backend-ai-webserver/) (requires-python:>=3.7), version: 20.9.9
2021-04-04T11:53:37,447   Found link https://files.pythonhosted.org/packages/07/d3/fa19fb9c1863fcb9eb508512b67b1a7724f2f27110848c4aafcc61b1ad5d/backend.ai-webserver-20.9.10.tar.gz#sha256=202f17dc59629f34fc7ae133f84cab2c22b1217bd631000f6884935f3096f416 (from https://pypi.org/simple/backend-ai-webserver/) (requires-python:>=3.7), version: 20.9.10
2021-04-04T11:53:37,448   Found link https://files.pythonhosted.org/packages/9f/83/f665a7f126c6f355d308ec947fe4c046014d344e15628f695129c6ae36bd/backend.ai_webserver-20.9.10-py3-none-any.whl#sha256=59fcf1db0367ef3f9aa193dcb3bd2102461876e36f17180c8eff10e016c694c0 (from https://pypi.org/simple/backend-ai-webserver/) (requires-python:>=3.7), version: 20.9.10
2021-04-04T11:53:37,449   Link requires a different Python (3.7.3 not in: '>=3.9'): https://files.pythonhosted.org/packages/af/0d/0f1e034c3453a07420dd2d369f31c8e35f329d8a1b6c3620d52350de0d9e/backend.ai-webserver-21.3.0.post1.tar.gz#sha256=0a8af52bc37be4d7bf99d6ff269166b2e18beb29bcdffb7bd71e9c57d336b1dc (from https://pypi.org/simple/backend-ai-webserver/) (requires-python:>=3.9)
2021-04-04T11:53:37,450   Link requires a different Python (3.7.3 not in: '>=3.9'): https://files.pythonhosted.org/packages/47/7c/754a307fcdbdd670812f5857eff09d514412ef003e0ce56d8a87e0b98c73/backend.ai_webserver-21.3.0.post1-py3-none-any.whl#sha256=ccf9bf83eb710c52c83f2f6ea9b4072b6f151a6fc35457e70e2b3c6f55e94399 (from https://pypi.org/simple/backend-ai-webserver/) (requires-python:>=3.9)
2021-04-04T11:53:37,450   Link requires a different Python (3.7.3 not in: '>=3.9'): https://files.pythonhosted.org/packages/1a/33/e1fe80c6a8caac8f54ac7d9ae4b3371e8d1613d0ad0d817a0550273e9161/backend.ai-webserver-21.3.1.tar.gz#sha256=ae511ba1b1dd04272a710288337f2b4aff4c3ac3086664c9eecbc7b274fde6e7 (from https://pypi.org/simple/backend-ai-webserver/) (requires-python:>=3.9)
2021-04-04T11:53:37,451   Link requires a different Python (3.7.3 not in: '>=3.9'): https://files.pythonhosted.org/packages/e6/d7/36a6d89303c28c8ef896af94b20c03b2a7d5d3ece799a128913d58d5abbe/backend.ai_webserver-21.3.1-py3-none-any.whl#sha256=3a2352c612f7b32eecd9fd4830e23159f7f15243d7d7d2f564df0d7a5f3f393c (from https://pypi.org/simple/backend-ai-webserver/) (requires-python:>=3.9)
2021-04-04T11:53:37,451   Link requires a different Python (3.7.3 not in: '>=3.9'): https://files.pythonhosted.org/packages/bb/de/a2e496b736765a71012b6a8e00110089e510fb1bf65b1e078e2b137e8be3/backend.ai-webserver-21.3.1.post0.tar.gz#sha256=fff571f13f4f80ac7432d321c6c477ca68b876fd5c20a4e60ff1afaf90cb1d71 (from https://pypi.org/simple/backend-ai-webserver/) (requires-python:>=3.9)
2021-04-04T11:53:37,452   Link requires a different Python (3.7.3 not in: '>=3.9'): https://files.pythonhosted.org/packages/e2/e9/f4c082c4d930ad833c77d6d87e31e69feb063431c4557d4038ebbdeffd14/backend.ai_webserver-21.3.1.post0-py3-none-any.whl#sha256=22480e131673e809797047f86acf360227248efb90b3e164d13deb6fedf71db3 (from https://pypi.org/simple/backend-ai-webserver/) (requires-python:>=3.9)
2021-04-04T11:53:37,454 Given no hashes to check 0 links for project 'backend-ai-webserver': discarding no candidates
2021-04-04T11:53:37,454 ERROR: Could not find a version that satisfies the requirement backend-ai-webserver==21.3.1.post0
2021-04-04T11:53:37,454 ERROR: No matching distribution found for backend-ai-webserver==21.3.1.post0
2021-04-04T11:53:37,455 Exception information:
2021-04-04T11:53:37,455 Traceback (most recent call last):
2021-04-04T11:53:37,455   File "/usr/local/lib/python3.7/dist-packages/pip/_vendor/resolvelib/resolvers.py", line 171, in _merge_into_criterion
2021-04-04T11:53:37,455     crit = self.state.criteria[name]
2021-04-04T11:53:37,455 KeyError: 'backend-ai-webserver'
2021-04-04T11:53:37,455 
2021-04-04T11:53:37,455 During handling of the above exception, another exception occurred:
2021-04-04T11:53:37,455 
2021-04-04T11:53:37,455 Traceback (most recent call last):
2021-04-04T11:53:37,455   File "/usr/local/lib/python3.7/dist-packages/pip/_vendor/resolvelib/resolvers.py", line 318, in resolve
2021-04-04T11:53:37,455     name, crit = self._merge_into_criterion(r, parent=None)
2021-04-04T11:53:37,455   File "/usr/local/lib/python3.7/dist-packages/pip/_vendor/resolvelib/resolvers.py", line 173, in _merge_into_criterion
2021-04-04T11:53:37,455     crit = Criterion.from_requirement(self._p, requirement, parent)
2021-04-04T11:53:37,455   File "/usr/local/lib/python3.7/dist-packages/pip/_vendor/resolvelib/resolvers.py", line 83, in from_requirement
2021-04-04T11:53:37,455     raise RequirementsConflicted(criterion)
2021-04-04T11:53:37,455 pip._vendor.resolvelib.resolvers.RequirementsConflicted: Requirements conflict: SpecifierRequirement('backend-ai-webserver==21.3.1.post0')
2021-04-04T11:53:37,455 
2021-04-04T11:53:37,455 During handling of the above exception, another exception occurred:
2021-04-04T11:53:37,455 
2021-04-04T11:53:37,455 Traceback (most recent call last):
2021-04-04T11:53:37,455   File "/usr/local/lib/python3.7/dist-packages/pip/_internal/resolution/resolvelib/resolver.py", line 122, in resolve
2021-04-04T11:53:37,455     requirements, max_rounds=try_to_avoid_resolution_too_deep,
2021-04-04T11:53:37,455   File "/usr/local/lib/python3.7/dist-packages/pip/_vendor/resolvelib/resolvers.py", line 453, in resolve
2021-04-04T11:53:37,455     state = resolution.resolve(requirements, max_rounds=max_rounds)
2021-04-04T11:53:37,455   File "/usr/local/lib/python3.7/dist-packages/pip/_vendor/resolvelib/resolvers.py", line 320, in resolve
2021-04-04T11:53:37,455     raise ResolutionImpossible(e.criterion.information)
2021-04-04T11:53:37,455 pip._vendor.resolvelib.resolvers.ResolutionImpossible: [RequirementInformation(requirement=SpecifierRequirement('backend-ai-webserver==21.3.1.post0'), parent=None)]
2021-04-04T11:53:37,455 
2021-04-04T11:53:37,455 The above exception was the direct cause of the following exception:
2021-04-04T11:53:37,455 
2021-04-04T11:53:37,455 Traceback (most recent call last):
2021-04-04T11:53:37,455   File "/usr/local/lib/python3.7/dist-packages/pip/_internal/cli/base_command.py", line 189, in _main
2021-04-04T11:53:37,455     status = self.run(options, args)
2021-04-04T11:53:37,455   File "/usr/local/lib/python3.7/dist-packages/pip/_internal/cli/req_command.py", line 178, in wrapper
2021-04-04T11:53:37,455     return func(self, options, args)
2021-04-04T11:53:37,455   File "/usr/local/lib/python3.7/dist-packages/pip/_internal/commands/wheel.py", line 159, in run
2021-04-04T11:53:37,455     reqs, check_supported_wheels=True
2021-04-04T11:53:37,455   File "/usr/local/lib/python3.7/dist-packages/pip/_internal/resolution/resolvelib/resolver.py", line 127, in resolve
2021-04-04T11:53:37,455     six.raise_from(error, e)
2021-04-04T11:53:37,455   File "<string>", line 3, in raise_from
2021-04-04T11:53:37,455 pip._internal.exceptions.DistributionNotFound: No matching distribution found for backend-ai-webserver==21.3.1.post0
2021-04-04T11:53:37,459 Removed build tracker: '/tmp/pip-req-tracker-3bckpj6d'