2020-12-05T00:49:05,388 Created temporary directory: /tmp/pip-ephem-wheel-cache-f2rhv64k
2020-12-05T00:49:05,391 Created temporary directory: /tmp/pip-req-tracker-2otqyizo
2020-12-05T00:49:05,392 Initialized build tracking at /tmp/pip-req-tracker-2otqyizo
2020-12-05T00:49:05,392 Created build tracker: /tmp/pip-req-tracker-2otqyizo
2020-12-05T00:49:05,392 Entered build tracker: /tmp/pip-req-tracker-2otqyizo
2020-12-05T00:49:05,393 Created temporary directory: /tmp/pip-wheel-q2apzx6o
2020-12-05T00:49:05,403 1 location(s) to search for versions of jupyterlab-pyflyby:
2020-12-05T00:49:05,403 * https://pypi.org/simple/jupyterlab-pyflyby/
2020-12-05T00:49:05,403 Fetching project page and analyzing links: https://pypi.org/simple/jupyterlab-pyflyby/
2020-12-05T00:49:05,403 Getting page https://pypi.org/simple/jupyterlab-pyflyby/
2020-12-05T00:49:05,405 Found index url https://pypi.org/simple
2020-12-05T00:49:05,813   Found link https://files.pythonhosted.org/packages/3d/c1/1231cb8345cab8b1d9d61f3dfdb48d30088ff9c10a2ce4aea0e586b3f752/jupyterlab_pyflyby-3.0.0.tar.gz#sha256=b45f1462793cf6aaac4c1fbee05dd5bd5927c3a406b855973c6075d7eaaad1d5 (from https://pypi.org/simple/jupyterlab-pyflyby/), version: 3.0.0
2020-12-05T00:49:05,817 Given no hashes to check 1 links for project 'jupyterlab-pyflyby': discarding no candidates
2020-12-05T00:49:05,818 Using version 3.0.0 (newest of versions: 3.0.0)
2020-12-05T00:49:05,822 Collecting jupyterlab-pyflyby==3.0.0
2020-12-05T00:49:05,824   Created temporary directory: /tmp/pip-unpack-5gomjtne
2020-12-05T00:49:05,863   Downloading jupyterlab_pyflyby-3.0.0.tar.gz (9.5 kB)
2020-12-05T00:49:05,889   Added jupyterlab-pyflyby==3.0.0 from https://files.pythonhosted.org/packages/3d/c1/1231cb8345cab8b1d9d61f3dfdb48d30088ff9c10a2ce4aea0e586b3f752/jupyterlab_pyflyby-3.0.0.tar.gz#sha256=b45f1462793cf6aaac4c1fbee05dd5bd5927c3a406b855973c6075d7eaaad1d5 to build tracker '/tmp/pip-req-tracker-2otqyizo'
2020-12-05T00:49:05,890     Running setup.py (path:/tmp/pip-wheel-q2apzx6o/jupyterlab-pyflyby/setup.py) egg_info for package jupyterlab-pyflyby
2020-12-05T00:49:05,890     Created temporary directory: /tmp/pip-pip-egg-info-dep2ugx0
2020-12-05T00:49:05,891     Running command python setup.py egg_info
2020-12-05T00:49:06,659     Traceback (most recent call last):
2020-12-05T00:49:06,660       File "<string>", line 1, in <module>
2020-12-05T00:49:06,661       File "/tmp/pip-wheel-q2apzx6o/jupyterlab-pyflyby/setup.py", line 5, in <module>
2020-12-05T00:49:06,661         from jupyter_packaging import create_cmdclass, get_version, install_npm
2020-12-05T00:49:06,661     ModuleNotFoundError: No module named 'jupyter_packaging'
2020-12-05T00:49:06,707 ERROR: Command errored out with exit status 1: python setup.py egg_info Check the logs for full command output.
2020-12-05T00:49:06,707 Exception information:
2020-12-05T00:49:06,707 Traceback (most recent call last):
2020-12-05T00:49:06,707   File "/usr/local/lib/python3.7/dist-packages/pip/_internal/cli/base_command.py", line 228, in _main
2020-12-05T00:49:06,707     status = self.run(options, args)
2020-12-05T00:49:06,707   File "/usr/local/lib/python3.7/dist-packages/pip/_internal/cli/req_command.py", line 182, in wrapper
2020-12-05T00:49:06,707     return func(self, options, args)
2020-12-05T00:49:06,707   File "/usr/local/lib/python3.7/dist-packages/pip/_internal/commands/wheel.py", line 156, in run
2020-12-05T00:49:06,707     reqs, check_supported_wheels=True
2020-12-05T00:49:06,707   File "/usr/local/lib/python3.7/dist-packages/pip/_internal/resolution/legacy/resolver.py", line 183, in resolve
2020-12-05T00:49:06,707     discovered_reqs.extend(self._resolve_one(requirement_set, req))
2020-12-05T00:49:06,707   File "/usr/local/lib/python3.7/dist-packages/pip/_internal/resolution/legacy/resolver.py", line 388, in _resolve_one
2020-12-05T00:49:06,707     abstract_dist = self._get_abstract_dist_for(req_to_install)
2020-12-05T00:49:06,707   File "/usr/local/lib/python3.7/dist-packages/pip/_internal/resolution/legacy/resolver.py", line 340, in _get_abstract_dist_for
2020-12-05T00:49:06,707     abstract_dist = self.preparer.prepare_linked_requirement(req)
2020-12-05T00:49:06,707   File "/usr/local/lib/python3.7/dist-packages/pip/_internal/operations/prepare.py", line 483, in prepare_linked_requirement
2020-12-05T00:49:06,707     req, self.req_tracker, self.finder, self.build_isolation,
2020-12-05T00:49:06,707   File "/usr/local/lib/python3.7/dist-packages/pip/_internal/operations/prepare.py", line 91, in _get_prepared_distribution
2020-12-05T00:49:06,707     abstract_dist.prepare_distribution_metadata(finder, build_isolation)
2020-12-05T00:49:06,707   File "/usr/local/lib/python3.7/dist-packages/pip/_internal/distributions/sdist.py", line 40, in prepare_distribution_metadata
2020-12-05T00:49:06,707     self.req.prepare_metadata()
2020-12-05T00:49:06,707   File "/usr/local/lib/python3.7/dist-packages/pip/_internal/req/req_install.py", line 555, in prepare_metadata
2020-12-05T00:49:06,707     self.metadata_directory = self._generate_metadata()
2020-12-05T00:49:06,707   File "/usr/local/lib/python3.7/dist-packages/pip/_internal/req/req_install.py", line 535, in _generate_metadata
2020-12-05T00:49:06,707     details=self.name or "from {}".format(self.link)
2020-12-05T00:49:06,707   File "/usr/local/lib/python3.7/dist-packages/pip/_internal/operations/build/metadata_legacy.py", line 73, in generate_metadata
2020-12-05T00:49:06,707     command_desc='python setup.py egg_info',
2020-12-05T00:49:06,707   File "/usr/local/lib/python3.7/dist-packages/pip/_internal/utils/subprocess.py", line 242, in call_subprocess
2020-12-05T00:49:06,707     raise InstallationError(exc_msg)
2020-12-05T00:49:06,707 pip._internal.exceptions.InstallationError: Command errored out with exit status 1: python setup.py egg_info Check the logs for full command output.
2020-12-05T00:49:06,815 Removed jupyterlab-pyflyby==3.0.0 from https://files.pythonhosted.org/packages/3d/c1/1231cb8345cab8b1d9d61f3dfdb48d30088ff9c10a2ce4aea0e586b3f752/jupyterlab_pyflyby-3.0.0.tar.gz#sha256=b45f1462793cf6aaac4c1fbee05dd5bd5927c3a406b855973c6075d7eaaad1d5 from build tracker '/tmp/pip-req-tracker-2otqyizo'
2020-12-05T00:49:06,816 Removed build tracker: '/tmp/pip-req-tracker-2otqyizo'