2021-05-04T17:46:17,179 Created temporary directory: /tmp/pip-ephem-wheel-cache-en6rcw5j 2021-05-04T17:46:17,182 Created temporary directory: /tmp/pip-req-tracker-jxk2jpgq 2021-05-04T17:46:17,183 Initialized build tracking at /tmp/pip-req-tracker-jxk2jpgq 2021-05-04T17:46:17,183 Created build tracker: /tmp/pip-req-tracker-jxk2jpgq 2021-05-04T17:46:17,183 Entered build tracker: /tmp/pip-req-tracker-jxk2jpgq 2021-05-04T17:46:17,184 Created temporary directory: /tmp/pip-wheel-r7plac9c 2021-05-04T17:46:17,220 1 location(s) to search for versions of backtracked: 2021-05-04T17:46:17,220 * https://pypi.org/simple/backtracked/ 2021-05-04T17:46:17,221 Fetching project page and analyzing links: https://pypi.org/simple/backtracked/ 2021-05-04T17:46:17,222 Getting page https://pypi.org/simple/backtracked/ 2021-05-04T17:46:17,223 Found index url https://pypi.org/simple 2021-05-04T17:46:17,329 Link requires a different Python (3.7.3 not in: '>=3.8'): https://files.pythonhosted.org/packages/51/9f/4b797828482530b14d7a2e05e6a95163961f4dad9cf9e7557c0a2a18f18d/backtracked-0.1.0-py3-none-any.whl#sha256=8447023aaef6dea12816e97561eb3b299b2be78f4a899f2b8b13a422eb74a332 (from https://pypi.org/simple/backtracked/) (requires-python:>=3.8) 2021-05-04T17:46:17,329 Link requires a different Python (3.7.3 not in: '>=3.8'): https://files.pythonhosted.org/packages/7d/6d/bd22f1e5a0ba9d17f4d6586cf569946616b9bf7f28d62b796c3174d7c0b9/backtracked-0.1.0.tar.gz#sha256=e1afc9fb51a4e5d22b11aed8f3318ad194a8f81850ee6dce18fe0b0d92425b9f (from https://pypi.org/simple/backtracked/) (requires-python:>=3.8) 2021-05-04T17:46:17,330 Link requires a different Python (3.7.3 not in: '>=3.8'): https://files.pythonhosted.org/packages/d5/74/cf58f4ad9f556e3f6f409d1df04e8a5cd200efbd5be018375274cc66a00d/backtracked-0.1.1-py3-none-any.whl#sha256=040c59e41af5913aabb507d3a0fbe8f3ef2adb23d1f7d28aef75247cd4f42ccf (from https://pypi.org/simple/backtracked/) (requires-python:>=3.8) 2021-05-04T17:46:17,331 Link requires a different Python (3.7.3 not in: '>=3.8'): https://files.pythonhosted.org/packages/eb/a9/47d1cab80319457954f535e91e01c95c9e8260c7efb9bc9d962dc8893a46/backtracked-0.1.1.tar.gz#sha256=32c57e653d8d634d57d85e490eb297feea27b2c9658c9e0af090b1f5c77de559 (from https://pypi.org/simple/backtracked/) (requires-python:>=3.8) 2021-05-04T17:46:17,331 Skipping link: not a file: https://pypi.org/simple/backtracked/ 2021-05-04T17:46:17,331 Given no hashes to check 0 links for project 'backtracked': discarding no candidates 2021-05-04T17:46:17,332 ERROR: Could not find a version that satisfies the requirement backtracked==0.1.0 (from versions: none) 2021-05-04T17:46:17,332 ERROR: No matching distribution found for backtracked==0.1.0 2021-05-04T17:46:17,332 Exception information: 2021-05-04T17:46:17,332 Traceback (most recent call last): 2021-05-04T17:46:17,332 File "/usr/local/lib/python3.7/dist-packages/pip/_vendor/resolvelib/resolvers.py", line 341, in resolve 2021-05-04T17:46:17,332 name, crit = self._merge_into_criterion(r, parent=None) 2021-05-04T17:46:17,332 File "/usr/local/lib/python3.7/dist-packages/pip/_vendor/resolvelib/resolvers.py", line 173, in _merge_into_criterion 2021-05-04T17:46:17,332 raise RequirementsConflicted(criterion) 2021-05-04T17:46:17,332 pip._vendor.resolvelib.resolvers.RequirementsConflicted: Requirements conflict: SpecifierRequirement('backtracked==0.1.0') 2021-05-04T17:46:17,332 2021-05-04T17:46:17,332 During handling of the above exception, another exception occurred: 2021-05-04T17:46:17,332 2021-05-04T17:46:17,332 Traceback (most recent call last): 2021-05-04T17:46:17,332 File "/usr/local/lib/python3.7/dist-packages/pip/_internal/resolution/resolvelib/resolver.py", line 128, in resolve 2021-05-04T17:46:17,332 requirements, max_rounds=try_to_avoid_resolution_too_deep 2021-05-04T17:46:17,332 File "/usr/local/lib/python3.7/dist-packages/pip/_vendor/resolvelib/resolvers.py", line 473, in resolve 2021-05-04T17:46:17,332 state = resolution.resolve(requirements, max_rounds=max_rounds) 2021-05-04T17:46:17,332 File "/usr/local/lib/python3.7/dist-packages/pip/_vendor/resolvelib/resolvers.py", line 343, in resolve 2021-05-04T17:46:17,332 raise ResolutionImpossible(e.criterion.information) 2021-05-04T17:46:17,332 pip._vendor.resolvelib.resolvers.ResolutionImpossible: [RequirementInformation(requirement=SpecifierRequirement('backtracked==0.1.0'), parent=None)] 2021-05-04T17:46:17,332 2021-05-04T17:46:17,332 The above exception was the direct cause of the following exception: 2021-05-04T17:46:17,332 2021-05-04T17:46:17,332 Traceback (most recent call last): 2021-05-04T17:46:17,332 File "/usr/local/lib/python3.7/dist-packages/pip/_internal/cli/base_command.py", line 180, in _main 2021-05-04T17:46:17,332 status = self.run(options, args) 2021-05-04T17:46:17,332 File "/usr/local/lib/python3.7/dist-packages/pip/_internal/cli/req_command.py", line 204, in wrapper 2021-05-04T17:46:17,332 return func(self, options, args) 2021-05-04T17:46:17,332 File "/usr/local/lib/python3.7/dist-packages/pip/_internal/commands/wheel.py", line 143, in run 2021-05-04T17:46:17,332 reqs, check_supported_wheels=True 2021-05-04T17:46:17,332 File "/usr/local/lib/python3.7/dist-packages/pip/_internal/resolution/resolvelib/resolver.py", line 136, in resolve 2021-05-04T17:46:17,332 raise error from e 2021-05-04T17:46:17,332 pip._internal.exceptions.DistributionNotFound: No matching distribution found for backtracked==0.1.0 2021-05-04T17:46:17,337 Removed build tracker: '/tmp/pip-req-tracker-jxk2jpgq'