2019-06-29T10:27:40 Created temporary directory: /tmp/pip-ephem-wheel-cache-k92vi5ka
2019-06-29T10:27:40 Created temporary directory: /tmp/pip-req-tracker-uwq1sss3
2019-06-29T10:27:40 Created requirements tracker '/tmp/pip-req-tracker-uwq1sss3'
2019-06-29T10:27:40 Created temporary directory: /tmp/pip-wheel-6h_jhc50
2019-06-29T10:27:40 Collecting virtual-less==0.0.1-1.3.3
2019-06-29T10:27:40   1 location(s) to search for versions of virtual-less:
2019-06-29T10:27:40   * https://pypi.org/simple/virtual-less/
2019-06-29T10:27:40   Getting page https://pypi.org/simple/virtual-less/
2019-06-29T10:27:40   Analyzing links from page https://pypi.org/simple/virtual-less/
2019-06-29T10:27:40     Found link https://files.pythonhosted.org/packages/a3/34/b0bc006b3247308fec803eebfcd074df30163d086aa0e1a1f9c7bd982adc/virtual-less-0.0.1-1.3.3.tar.gz#sha256=d3bc6978894b3fde403a536b59fd7f7d5324ba741294ed4198484104725a1381 (from https://pypi.org/simple/virtual-less/), version: 0.0.1-1.3.3
2019-06-29T10:27:40     Found link https://files.pythonhosted.org/packages/f6/ea/f04bb74cbef265d89b765894f8f61d73f6e5f26176b0ca749751e95f521f/virtual-less-0.0.1a.tar.gz#sha256=30f90cbb7fa455dd87bcd134bcca11c55894d299ab1cb357ff18ce564b32ab00 (from https://pypi.org/simple/virtual-less/), version: 0.0.1a
2019-06-29T10:27:40   Using version 0.0.1-1.3.3 (newest of versions: 0.0.1-1.3.3)
2019-06-29T10:27:40   Created temporary directory: /tmp/pip-unpack-u44ecm06
2019-06-29T10:27:40   Downloading https://files.pythonhosted.org/packages/a3/34/b0bc006b3247308fec803eebfcd074df30163d086aa0e1a1f9c7bd982adc/virtual-less-0.0.1-1.3.3.tar.gz (42kB)
2019-06-29T10:27:40   Downloading from URL https://files.pythonhosted.org/packages/a3/34/b0bc006b3247308fec803eebfcd074df30163d086aa0e1a1f9c7bd982adc/virtual-less-0.0.1-1.3.3.tar.gz#sha256=d3bc6978894b3fde403a536b59fd7f7d5324ba741294ed4198484104725a1381 (from https://pypi.org/simple/virtual-less/)
2019-06-29T10:27:41   Added virtual-less==0.0.1-1.3.3 from https://files.pythonhosted.org/packages/a3/34/b0bc006b3247308fec803eebfcd074df30163d086aa0e1a1f9c7bd982adc/virtual-less-0.0.1-1.3.3.tar.gz#sha256=d3bc6978894b3fde403a536b59fd7f7d5324ba741294ed4198484104725a1381 to build tracker '/tmp/pip-req-tracker-uwq1sss3'
2019-06-29T10:27:41     Running setup.py (path:/tmp/pip-wheel-6h_jhc50/virtual-less/setup.py) egg_info for package virtual-less
2019-06-29T10:27:41     Running command python setup.py egg_info
2019-06-29T10:27:42     Traceback (most recent call last):
2019-06-29T10:27:42       File "<string>", line 1, in <module>
2019-06-29T10:27:42       File "/tmp/pip-wheel-6h_jhc50/virtual-less/setup.py", line 6, in <module>
2019-06-29T10:27:42         from cStringIO import StringIO
2019-06-29T10:27:42     ModuleNotFoundError: No module named 'cStringIO'
2019-06-29T10:27:42 Cleaning up...
2019-06-29T10:27:42   Removing source in /tmp/pip-wheel-6h_jhc50/virtual-less
2019-06-29T10:27:42 Removed virtual-less==0.0.1-1.3.3 from https://files.pythonhosted.org/packages/a3/34/b0bc006b3247308fec803eebfcd074df30163d086aa0e1a1f9c7bd982adc/virtual-less-0.0.1-1.3.3.tar.gz#sha256=d3bc6978894b3fde403a536b59fd7f7d5324ba741294ed4198484104725a1381 from build tracker '/tmp/pip-req-tracker-uwq1sss3'
2019-06-29T10:27:42 Removed build tracker '/tmp/pip-req-tracker-uwq1sss3'
2019-06-29T10:27:42 ERROR: Command "python setup.py egg_info" failed with error code 1 in /tmp/pip-wheel-6h_jhc50/virtual-less/
2019-06-29T10:27:42 Exception information:
2019-06-29T10:27:42 Traceback (most recent call last):
2019-06-29T10:27:42   File "/usr/local/lib/python3.7/dist-packages/pip/_internal/cli/base_command.py", line 178, in main
2019-06-29T10:27:42     status = self.run(options, args)
2019-06-29T10:27:42   File "/usr/local/lib/python3.7/dist-packages/pip/_internal/commands/wheel.py", line 164, in run
2019-06-29T10:27:42     resolver.resolve(requirement_set)
2019-06-29T10:27:42   File "/usr/local/lib/python3.7/dist-packages/pip/_internal/resolve.py", line 131, in resolve
2019-06-29T10:27:42     self._resolve_one(requirement_set, req)
2019-06-29T10:27:42   File "/usr/local/lib/python3.7/dist-packages/pip/_internal/resolve.py", line 294, in _resolve_one
2019-06-29T10:27:42     abstract_dist = self._get_abstract_dist_for(req_to_install)
2019-06-29T10:27:42   File "/usr/local/lib/python3.7/dist-packages/pip/_internal/resolve.py", line 242, in _get_abstract_dist_for
2019-06-29T10:27:42     self.require_hashes
2019-06-29T10:27:42   File "/usr/local/lib/python3.7/dist-packages/pip/_internal/operations/prepare.py", line 362, in prepare_linked_requirement
2019-06-29T10:27:42     abstract_dist.prep_for_dist(finder, self.build_isolation)
2019-06-29T10:27:42   File "/usr/local/lib/python3.7/dist-packages/pip/_internal/operations/prepare.py", line 171, in prep_for_dist
2019-06-29T10:27:42     self.req.prepare_metadata()
2019-06-29T10:27:42   File "/usr/local/lib/python3.7/dist-packages/pip/_internal/req/req_install.py", line 537, in prepare_metadata
2019-06-29T10:27:42     self.run_egg_info()
2019-06-29T10:27:42   File "/usr/local/lib/python3.7/dist-packages/pip/_internal/req/req_install.py", line 615, in run_egg_info
2019-06-29T10:27:42     command_desc='python setup.py egg_info')
2019-06-29T10:27:42   File "/usr/local/lib/python3.7/dist-packages/pip/_internal/utils/misc.py", line 776, in call_subprocess
2019-06-29T10:27:42     % (command_desc, proc.returncode, cwd))
2019-06-29T10:27:42 pip._internal.exceptions.InstallationError: Command "python setup.py egg_info" failed with error code 1 in /tmp/pip-wheel-6h_jhc50/virtual-less/