2019-06-29T20:16:24 Created temporary directory: /tmp/pip-ephem-wheel-cache-zl49icsl
2019-06-29T20:16:24 Created temporary directory: /tmp/pip-req-tracker-y39yuj2z
2019-06-29T20:16:24 Created requirements tracker '/tmp/pip-req-tracker-y39yuj2z'
2019-06-29T20:16:24 Created temporary directory: /tmp/pip-wheel-qrl4ud20
2019-06-29T20:16:24 Cleaning up...
2019-06-29T20:16:24 Removed build tracker '/tmp/pip-req-tracker-y39yuj2z'
2019-06-29T20:16:24 ERROR: Invalid requirement: 'PyFileSec==0.2.10 alpha'

2019-06-29T20:16:24 Exception information:
2019-06-29T20:16:24 Traceback (most recent call last):
2019-06-29T20:16:24   File "/usr/local/lib/python3.7/dist-packages/pip/_vendor/packaging/requirements.py", line 93, in __init__
2019-06-29T20:16:24     req = REQUIREMENT.parseString(requirement_string)
2019-06-29T20:16:24   File "/usr/local/lib/python3.7/dist-packages/pip/_vendor/pyparsing.py", line 1828, in parseString
2019-06-29T20:16:24     raise exc
2019-06-29T20:16:24   File "/usr/local/lib/python3.7/dist-packages/pip/_vendor/pyparsing.py", line 1818, in parseString
2019-06-29T20:16:24     loc, tokens = self._parse( instring, 0 )
2019-06-29T20:16:24   File "/usr/local/lib/python3.7/dist-packages/pip/_vendor/pyparsing.py", line 1562, in _parseNoCache
2019-06-29T20:16:24     loc,tokens = self.parseImpl( instring, preloc, doActions )
2019-06-29T20:16:24   File "/usr/local/lib/python3.7/dist-packages/pip/_vendor/pyparsing.py", line 3752, in parseImpl
2019-06-29T20:16:24     loc, exprtokens = e._parse( instring, loc, doActions )
2019-06-29T20:16:24   File "/usr/local/lib/python3.7/dist-packages/pip/_vendor/pyparsing.py", line 1566, in _parseNoCache
2019-06-29T20:16:24     loc,tokens = self.parseImpl( instring, preloc, doActions )
2019-06-29T20:16:24   File "/usr/local/lib/python3.7/dist-packages/pip/_vendor/pyparsing.py", line 3536, in parseImpl
2019-06-29T20:16:24     raise ParseException(instring, loc, self.errmsg, self)
2019-06-29T20:16:24 pip._vendor.pyparsing.ParseException: Expected stringEnd (at char 18), (line:1, col:19)
2019-06-29T20:16:24 
2019-06-29T20:16:24 During handling of the above exception, another exception occurred:
2019-06-29T20:16:24 
2019-06-29T20:16:24 Traceback (most recent call last):
2019-06-29T20:16:24   File "/usr/local/lib/python3.7/dist-packages/pip/_internal/req/constructors.py", line 285, in install_req_from_line
2019-06-29T20:16:24     req = Requirement(req_as_string)
2019-06-29T20:16:24   File "/usr/local/lib/python3.7/dist-packages/pip/_vendor/packaging/requirements.py", line 97, in __init__
2019-06-29T20:16:24     requirement_string[e.loc : e.loc + 8], e.msg
2019-06-29T20:16:24 pip._vendor.packaging.requirements.InvalidRequirement: Parse error at "'alpha'": Expected stringEnd
2019-06-29T20:16:24 
2019-06-29T20:16:24 During handling of the above exception, another exception occurred:
2019-06-29T20:16:24 
2019-06-29T20:16:24 Traceback (most recent call last):
2019-06-29T20:16:24   File "/usr/local/lib/python3.7/dist-packages/pip/_internal/cli/base_command.py", line 178, in main
2019-06-29T20:16:24     status = self.run(options, args)
2019-06-29T20:16:24   File "/usr/local/lib/python3.7/dist-packages/pip/_internal/commands/wheel.py", line 137, in run
2019-06-29T20:16:24     self.name, wheel_cache
2019-06-29T20:16:24   File "/usr/local/lib/python3.7/dist-packages/pip/_internal/cli/base_command.py", line 268, in populate_requirement_set
2019-06-29T20:16:24     wheel_cache=wheel_cache
2019-06-29T20:16:24   File "/usr/local/lib/python3.7/dist-packages/pip/_internal/req/constructors.py", line 296, in install_req_from_line
2019-06-29T20:16:24     "Invalid requirement: '%s'\n%s" % (req_as_string, add_msg)
2019-06-29T20:16:24 pip._internal.exceptions.InstallationError: Invalid requirement: 'PyFileSec==0.2.10 alpha'