2020-10-12T15:45:17,744 Created temporary directory: /tmp/pip-ephem-wheel-cache-1v1qdf6a
2020-10-12T15:45:17,746 Created temporary directory: /tmp/pip-req-tracker-9uqaippr
2020-10-12T15:45:17,747 Initialized build tracking at /tmp/pip-req-tracker-9uqaippr
2020-10-12T15:45:17,747 Created build tracker: /tmp/pip-req-tracker-9uqaippr
2020-10-12T15:45:17,747 Entered build tracker: /tmp/pip-req-tracker-9uqaippr
2020-10-12T15:45:17,748 Created temporary directory: /tmp/pip-wheel-8jh6btyh
2020-10-12T15:45:17,757 1 location(s) to search for versions of yfs:
2020-10-12T15:45:17,757 * https://pypi.org/simple/yfs/
2020-10-12T15:45:17,758 Fetching project page and analyzing links: https://pypi.org/simple/yfs/
2020-10-12T15:45:17,758 Getting page https://pypi.org/simple/yfs/
2020-10-12T15:45:17,759 Found index url https://pypi.org/simple
2020-10-12T15:45:17,854   Link requires a different Python (3.7.3 not in: '>=3.8,<4.0'): https://files.pythonhosted.org/packages/25/f7/6afcc31fb8f5666e02a503fbd33f5ba054bbb0771056e3e6389c413cab65/yfs-0.2.0-py3-none-any.whl#sha256=0536e9ab726cc564921831b5485c7c13259f55ea2494d5a6a4ec0c246433425c (from https://pypi.org/simple/yfs/) (requires-python:>=3.8,<4.0)
2020-10-12T15:45:17,855   Link requires a different Python (3.7.3 not in: '>=3.8,<4.0'): https://files.pythonhosted.org/packages/14/7b/c2c9b79e0d088445aa988f5ec92fe1af44ac942ed29270eacea249efbd2e/yfs-0.2.0.tar.gz#sha256=e880f782d30545bed8668e7135be18a902edf8f9763599ef48531bfd62b8cd7b (from https://pypi.org/simple/yfs/) (requires-python:>=3.8,<4.0)
2020-10-12T15:45:17,856   Link requires a different Python (3.7.3 not in: '>=3.8,<4.0'): https://files.pythonhosted.org/packages/94/1c/f78f8d5e0d49471255cac69a38bcbd3bb0eced744382e9ca26ad068805f6/yfs-0.2.2-py3-none-any.whl#sha256=eba2fe17e35c8b3589aaa28d4876ef03b1ff4f2450a9636bb5e77315e408f9ca (from https://pypi.org/simple/yfs/) (requires-python:>=3.8,<4.0)
2020-10-12T15:45:17,857   Link requires a different Python (3.7.3 not in: '>=3.8,<4.0'): https://files.pythonhosted.org/packages/77/6d/2d69e7bb17268239fddd1e936809043d1cb6de7e62ecfd004fe2f1c65f88/yfs-0.2.2.tar.gz#sha256=631c1ff44f00cff5accaa4e86b8695ccedbbb758631da5716b1735b102aa8079 (from https://pypi.org/simple/yfs/) (requires-python:>=3.8,<4.0)
2020-10-12T15:45:17,858   Link requires a different Python (3.7.3 not in: '>=3.8,<4.0'): https://files.pythonhosted.org/packages/4d/00/7f867e7570dcdbec8fdad2292a55d09255d6384dbab37e6361e6c846d3a4/yfs-0.3.0-py3-none-any.whl#sha256=83a838d7a0f4c00d6d5e3d527f03e4bb0604ff00988e3b7b40712b530d97236d (from https://pypi.org/simple/yfs/) (requires-python:>=3.8,<4.0)
2020-10-12T15:45:17,858   Link requires a different Python (3.7.3 not in: '>=3.8,<4.0'): https://files.pythonhosted.org/packages/e6/2a/abfcf79a1ea794f416b8a83ff3ad6e5890e544cd860e95cdbf8a69cab4b2/yfs-0.3.0.tar.gz#sha256=22037456b9d64133b51e7125c21f8a68abb68b3639009ddee645c97662087b92 (from https://pypi.org/simple/yfs/) (requires-python:>=3.8,<4.0)
2020-10-12T15:45:17,859   Link requires a different Python (3.7.3 not in: '>=3.8,<4.0'): https://files.pythonhosted.org/packages/f8/1d/7b94984ebffb7b6e9e4eed7b240f775c859dfdfc9cbc09e146e3ea0d3d65/yfs-0.3.1-py3-none-any.whl#sha256=ac2d121e9f97444e223e930aebba1a452ab102ec19e579c1de034ac5da804ae0 (from https://pypi.org/simple/yfs/) (requires-python:>=3.8,<4.0)
2020-10-12T15:45:17,860   Link requires a different Python (3.7.3 not in: '>=3.8,<4.0'): https://files.pythonhosted.org/packages/fe/58/881381bffd35a0d2a3ebcc65ac761214b75ba87ded2a369f42053a8c5581/yfs-0.3.1.tar.gz#sha256=61a208eca75ae206d44ff36e1b223336faacf53919cbfb1a708aafb3ec05b8c1 (from https://pypi.org/simple/yfs/) (requires-python:>=3.8,<4.0)
2020-10-12T15:45:17,860 Given no hashes to check 0 links for project 'yfs': discarding no candidates
2020-10-12T15:45:17,860 ERROR: Could not find a version that satisfies the requirement yfs==0.3.1 (from versions: none)
2020-10-12T15:45:17,861 ERROR: No matching distribution found for yfs==0.3.1
2020-10-12T15:45:17,861 Exception information:
2020-10-12T15:45:17,861 Traceback (most recent call last):
2020-10-12T15:45:17,861   File "/usr/local/lib/python3.7/dist-packages/pip/_internal/cli/base_command.py", line 228, in _main
2020-10-12T15:45:17,861     status = self.run(options, args)
2020-10-12T15:45:17,861   File "/usr/local/lib/python3.7/dist-packages/pip/_internal/cli/req_command.py", line 182, in wrapper
2020-10-12T15:45:17,861     return func(self, options, args)
2020-10-12T15:45:17,861   File "/usr/local/lib/python3.7/dist-packages/pip/_internal/commands/wheel.py", line 156, in run
2020-10-12T15:45:17,861     reqs, check_supported_wheels=True
2020-10-12T15:45:17,861   File "/usr/local/lib/python3.7/dist-packages/pip/_internal/resolution/legacy/resolver.py", line 183, in resolve
2020-10-12T15:45:17,861     discovered_reqs.extend(self._resolve_one(requirement_set, req))
2020-10-12T15:45:17,861   File "/usr/local/lib/python3.7/dist-packages/pip/_internal/resolution/legacy/resolver.py", line 388, in _resolve_one
2020-10-12T15:45:17,861     abstract_dist = self._get_abstract_dist_for(req_to_install)
2020-10-12T15:45:17,861   File "/usr/local/lib/python3.7/dist-packages/pip/_internal/resolution/legacy/resolver.py", line 339, in _get_abstract_dist_for
2020-10-12T15:45:17,861     self._populate_link(req)
2020-10-12T15:45:17,861   File "/usr/local/lib/python3.7/dist-packages/pip/_internal/resolution/legacy/resolver.py", line 305, in _populate_link
2020-10-12T15:45:17,861     req.link = self._find_requirement_link(req)
2020-10-12T15:45:17,861   File "/usr/local/lib/python3.7/dist-packages/pip/_internal/resolution/legacy/resolver.py", line 270, in _find_requirement_link
2020-10-12T15:45:17,861     best_candidate = self.finder.find_requirement(req, upgrade)
2020-10-12T15:45:17,861   File "/usr/local/lib/python3.7/dist-packages/pip/_internal/index/package_finder.py", line 928, in find_requirement
2020-10-12T15:45:17,861     req)
2020-10-12T15:45:17,861 pip._internal.exceptions.DistributionNotFound: No matching distribution found for yfs==0.3.1
2020-10-12T15:45:17,865 Removed build tracker: '/tmp/pip-req-tracker-9uqaippr'