2020-04-19T18:11:40,541 Created temporary directory: /tmp/pip-ephem-wheel-cache-6xdtnfad
2020-04-19T18:11:40,546 Created temporary directory: /tmp/pip-req-tracker-sbj5d6e0
2020-04-19T18:11:40,547 Initialized build tracking at /tmp/pip-req-tracker-sbj5d6e0
2020-04-19T18:11:40,548 Created build tracker: /tmp/pip-req-tracker-sbj5d6e0
2020-04-19T18:11:40,548 Entered build tracker: /tmp/pip-req-tracker-sbj5d6e0
2020-04-19T18:11:40,549 Created temporary directory: /tmp/pip-wheel-tjof3jqp
2020-04-19T18:11:40,554 1 location(s) to search for versions of r2k:
2020-04-19T18:11:40,554 * https://pypi.org/simple/r2k/
2020-04-19T18:11:40,555 Fetching project page and analyzing links: https://pypi.org/simple/r2k/
2020-04-19T18:11:40,556 Getting page https://pypi.org/simple/r2k/
2020-04-19T18:11:40,559 Found index url https://pypi.org/simple
2020-04-19T18:11:40,562 Getting credentials from keyring for https://pypi.org/simple
2020-04-19T18:11:40,563 Getting credentials from keyring for pypi.org
2020-04-19T18:11:40,793   Skipping link: No binaries permitted for r2k: https://files.pythonhosted.org/packages/20/a0/954bdb641a2dee1db0ea44f1f19e4c6f154c15091daebcf88d6067296904/r2k-0.1.0-py3-none-any.whl#sha256=21490f416c14ae7bd0d42e5923436e4db097c8a8d7030ce35a60eb8127cea401 (from https://pypi.org/simple/r2k/) (requires-python:>=3.8,<4.0)
2020-04-19T18:11:40,794   Link requires a different Python (3.7.3 not in: '>=3.8,<4.0'): https://files.pythonhosted.org/packages/9d/3f/4e76693cd9f60b885b3db29ef6ec6f52d442d78fa7f1f0d85c37b062b507/r2k-0.1.0.tar.gz#sha256=468b256c713d8c5da530cc8587ef5fc0ab08f8bde948ff599000771adfca2430 (from https://pypi.org/simple/r2k/) (requires-python:>=3.8,<4.0)
2020-04-19T18:11:40,795   Skipping link: No binaries permitted for r2k: https://files.pythonhosted.org/packages/dd/bd/387103b219357030359cd9d106730516b160f6178cb2f1fe78cd116fd45f/r2k-0.2.0-py3-none-any.whl#sha256=d4f6b2b7665502059eedaf686e1cdf4c6b3edc3f6d2665fe376c3ba709edf06f (from https://pypi.org/simple/r2k/) (requires-python:>=3.8,<4.0)
2020-04-19T18:11:40,796   Link requires a different Python (3.7.3 not in: '>=3.8,<4.0'): https://files.pythonhosted.org/packages/83/9f/49b1ba9f0b6c82a5461ee1e4e95d8364103040eaac9ba0ca87f826d6edf8/r2k-0.2.0.tar.gz#sha256=aea346bfd4cf0e84ccfa9f8d071d872a1181cd659e9ed47e595ef9ccf7251bcf (from https://pypi.org/simple/r2k/) (requires-python:>=3.8,<4.0)
2020-04-19T18:11:40,797   Link requires a different Python (3.7.3 not in: '>=3.8,<4.0'): https://files.pythonhosted.org/packages/02/c2/992ef273197daf76e4e02d77b3d0c2dcfc67cff8b7b076462e750691fbba/r2k-0.2.1.tar.gz#sha256=9523b338ecc0d74a2a01e9c9f2d72cee80806d5e6c86fbc3e55dc9b67f798733 (from https://pypi.org/simple/r2k/) (requires-python:>=3.8,<4.0)
2020-04-19T18:11:40,803 Given no hashes to check 0 links for project 'r2k': discarding no candidates
2020-04-19T18:11:40,804 ERROR: Could not find a version that satisfies the requirement r2k==0.2.1 (from versions: none)
2020-04-19T18:11:40,805 Cleaning up...
2020-04-19T18:11:40,810 Removed build tracker: '/tmp/pip-req-tracker-sbj5d6e0'
2020-04-19T18:11:40,813 ERROR: No matching distribution found for r2k==0.2.1
2020-04-19T18:11:40,814 Exception information:
2020-04-19T18:11:40,814 Traceback (most recent call last):
2020-04-19T18:11:40,814   File "/usr/local/lib/python3.7/dist-packages/pip/_internal/cli/base_command.py", line 186, in _main
2020-04-19T18:11:40,814     status = self.run(options, args)
2020-04-19T18:11:40,814   File "/usr/local/lib/python3.7/dist-packages/pip/_internal/commands/wheel.py", line 161, in run
2020-04-19T18:11:40,814     resolver.resolve(requirement_set)
2020-04-19T18:11:40,814   File "/usr/local/lib/python3.7/dist-packages/pip/_internal/legacy_resolve.py", line 177, in resolve
2020-04-19T18:11:40,814     discovered_reqs.extend(self._resolve_one(requirement_set, req))
2020-04-19T18:11:40,814   File "/usr/local/lib/python3.7/dist-packages/pip/_internal/legacy_resolve.py", line 333, in _resolve_one
2020-04-19T18:11:40,814     abstract_dist = self._get_abstract_dist_for(req_to_install)
2020-04-19T18:11:40,814   File "/usr/local/lib/python3.7/dist-packages/pip/_internal/legacy_resolve.py", line 281, in _get_abstract_dist_for
2020-04-19T18:11:40,814     req.populate_link(self.finder, upgrade_allowed, require_hashes)
2020-04-19T18:11:40,814   File "/usr/local/lib/python3.7/dist-packages/pip/_internal/req/req_install.py", line 249, in populate_link
2020-04-19T18:11:40,814     self.link = finder.find_requirement(self, upgrade)
2020-04-19T18:11:40,814   File "/usr/local/lib/python3.7/dist-packages/pip/_internal/index/package_finder.py", line 927, in find_requirement
2020-04-19T18:11:40,814     'No matching distribution found for %s' % req
2020-04-19T18:11:40,814 pip._internal.exceptions.DistributionNotFound: No matching distribution found for r2k==0.2.1