2019-06-28T03:49:06 Created temporary directory: /tmp/pip-ephem-wheel-cache-1lbk_8el
2019-06-28T03:49:06 Created temporary directory: /tmp/pip-req-tracker-q2fnyxbs
2019-06-28T03:49:06 Created requirements tracker '/tmp/pip-req-tracker-q2fnyxbs'
2019-06-28T03:49:06 Created temporary directory: /tmp/pip-wheel-tast9a2z
2019-06-28T03:49:06 Collecting constraint==0.4.0
2019-06-28T03:49:06   1 location(s) to search for versions of constraint:
2019-06-28T03:49:06   * https://pypi.org/simple/constraint/
2019-06-28T03:49:06   Getting page https://pypi.org/simple/constraint/
2019-06-28T03:49:06   Analyzing links from page https://pypi.org/simple/constraint/
2019-06-28T03:49:06     Found link https://files.pythonhosted.org/packages/ab/c8/df82c3c6cfa0a39956386dbdf52b9b289dcadb164a32c84758959ee364da/constraint-0.4.0.tar.gz#sha256=069ec8f1a0fd0b33ff1411bc8c5c01599952efb44816a0e40b6d504c4553032a (from https://pypi.org/simple/constraint/), version: 0.4.0
2019-06-28T03:49:06     Found link https://files.pythonhosted.org/packages/6f/37/f0910a612df888eab1e04ce6628c98476c0efc9af6e104d2e566bd25cc1f/constraint-0.4.1.tar.gz#sha256=c471f726dbb385c3ab9d0625290dbe1424cfee9ea62928203d1c922eb0b61f38 (from https://pypi.org/simple/constraint/), version: 0.4.1
2019-06-28T03:49:06   Using version 0.4.0 (newest of versions: 0.4.0)
2019-06-28T03:49:06   Created temporary directory: /tmp/pip-unpack-yryrz0f_
2019-06-28T03:49:07   Downloading https://files.pythonhosted.org/packages/ab/c8/df82c3c6cfa0a39956386dbdf52b9b289dcadb164a32c84758959ee364da/constraint-0.4.0.tar.gz
2019-06-28T03:49:07   Downloading from URL https://files.pythonhosted.org/packages/ab/c8/df82c3c6cfa0a39956386dbdf52b9b289dcadb164a32c84758959ee364da/constraint-0.4.0.tar.gz#sha256=069ec8f1a0fd0b33ff1411bc8c5c01599952efb44816a0e40b6d504c4553032a (from https://pypi.org/simple/constraint/)
2019-06-28T03:49:07   Added constraint==0.4.0 from https://files.pythonhosted.org/packages/ab/c8/df82c3c6cfa0a39956386dbdf52b9b289dcadb164a32c84758959ee364da/constraint-0.4.0.tar.gz#sha256=069ec8f1a0fd0b33ff1411bc8c5c01599952efb44816a0e40b6d504c4553032a to build tracker '/tmp/pip-req-tracker-q2fnyxbs'
2019-06-28T03:49:07     Running setup.py (path:/tmp/pip-wheel-tast9a2z/constraint/setup.py) egg_info for package constraint
2019-06-28T03:49:07     Running command python setup.py egg_info
2019-06-28T03:49:08     Traceback (most recent call last):
2019-06-28T03:49:08       File "<string>", line 1, in <module>
2019-06-28T03:49:08       File "/tmp/pip-wheel-tast9a2z/constraint/setup.py", line 129
2019-06-28T03:49:08         except OSError, ex:
2019-06-28T03:49:08                       ^
2019-06-28T03:49:08     SyntaxError: invalid syntax
2019-06-28T03:49:08 Cleaning up...
2019-06-28T03:49:08   Removing source in /tmp/pip-wheel-tast9a2z/constraint
2019-06-28T03:49:08 Removed constraint==0.4.0 from https://files.pythonhosted.org/packages/ab/c8/df82c3c6cfa0a39956386dbdf52b9b289dcadb164a32c84758959ee364da/constraint-0.4.0.tar.gz#sha256=069ec8f1a0fd0b33ff1411bc8c5c01599952efb44816a0e40b6d504c4553032a from build tracker '/tmp/pip-req-tracker-q2fnyxbs'
2019-06-28T03:49:08 Removed build tracker '/tmp/pip-req-tracker-q2fnyxbs'
2019-06-28T03:49:08 ERROR: Command "python setup.py egg_info" failed with error code 1 in /tmp/pip-wheel-tast9a2z/constraint/
2019-06-28T03:49:08 Exception information:
2019-06-28T03:49:08 Traceback (most recent call last):
2019-06-28T03:49:08   File "/usr/local/lib/python3.7/dist-packages/pip/_internal/cli/base_command.py", line 178, in main
2019-06-28T03:49:08     status = self.run(options, args)
2019-06-28T03:49:08   File "/usr/local/lib/python3.7/dist-packages/pip/_internal/commands/wheel.py", line 164, in run
2019-06-28T03:49:08     resolver.resolve(requirement_set)
2019-06-28T03:49:08   File "/usr/local/lib/python3.7/dist-packages/pip/_internal/resolve.py", line 131, in resolve
2019-06-28T03:49:08     self._resolve_one(requirement_set, req)
2019-06-28T03:49:08   File "/usr/local/lib/python3.7/dist-packages/pip/_internal/resolve.py", line 294, in _resolve_one
2019-06-28T03:49:08     abstract_dist = self._get_abstract_dist_for(req_to_install)
2019-06-28T03:49:08   File "/usr/local/lib/python3.7/dist-packages/pip/_internal/resolve.py", line 242, in _get_abstract_dist_for
2019-06-28T03:49:08     self.require_hashes
2019-06-28T03:49:08   File "/usr/local/lib/python3.7/dist-packages/pip/_internal/operations/prepare.py", line 362, in prepare_linked_requirement
2019-06-28T03:49:08     abstract_dist.prep_for_dist(finder, self.build_isolation)
2019-06-28T03:49:08   File "/usr/local/lib/python3.7/dist-packages/pip/_internal/operations/prepare.py", line 171, in prep_for_dist
2019-06-28T03:49:08     self.req.prepare_metadata()
2019-06-28T03:49:08   File "/usr/local/lib/python3.7/dist-packages/pip/_internal/req/req_install.py", line 537, in prepare_metadata
2019-06-28T03:49:08     self.run_egg_info()
2019-06-28T03:49:08   File "/usr/local/lib/python3.7/dist-packages/pip/_internal/req/req_install.py", line 615, in run_egg_info
2019-06-28T03:49:08     command_desc='python setup.py egg_info')
2019-06-28T03:49:08   File "/usr/local/lib/python3.7/dist-packages/pip/_internal/utils/misc.py", line 776, in call_subprocess
2019-06-28T03:49:08     % (command_desc, proc.returncode, cwd))
2019-06-28T03:49:08 pip._internal.exceptions.InstallationError: Command "python setup.py egg_info" failed with error code 1 in /tmp/pip-wheel-tast9a2z/constraint/