Traceback (most recent call last):
  File "/home/zack/.virtualenvs/swh/lib/python3.7/site-packages/aiohttp/connector.py", line 955, in _create_direct_connection
    traces=traces), loop=self._loop)
  File "/home/zack/.virtualenvs/swh/lib/python3.7/site-packages/aiohttp/connector.py", line 825, in _resolve_host
    self._resolver.resolve(host, port, family=self._family)
  File "/home/zack/.virtualenvs/swh/lib/python3.7/site-packages/aiohttp/resolver.py", line 30, in resolve
    host, port, type=socket.SOCK_STREAM, family=family)
  File "/usr/lib/python3.7/asyncio/base_events.py", line 788, in getaddrinfo
    None, getaddr_func, host, port, family, type, proto, flags)
  File "/usr/lib/python3.7/concurrent/futures/thread.py", line 57, in run
    result = self.fn(*self.args, **self.kwargs)
  File "/usr/lib/python3.7/socket.py", line 752, in getaddrinfo
    for res in _socket.getaddrinfo(host, port, family, type, proto, flags):
socket.gaierror: [Errno -2] Name or service not known

The above exception was the direct cause of the following exception:

Traceback (most recent call last):
  File "/home/zack/.virtualenvs/swh/bin/swh", line 11, in <module>
    load_entry_point('swh.core', 'console_scripts', 'swh')()
  File "/home/zack/dati/projects/sw-heritage/git/swh-environment/swh-core/swh/core/cli/__init__.py", line 111, in main
    return swh(auto_envvar_prefix='SWH')
  File "/home/zack/.virtualenvs/swh/lib/python3.7/site-packages/click/core.py", line 764, in __call__
    return self.main(*args, **kwargs)
  File "/home/zack/.virtualenvs/swh/lib/python3.7/site-packages/click/core.py", line 717, in main
    rv = self.invoke(ctx)
  File "/home/zack/.virtualenvs/swh/lib/python3.7/site-packages/click/core.py", line 1137, in invoke
    return _process_result(sub_ctx.command.invoke(sub_ctx))
  File "/home/zack/.virtualenvs/swh/lib/python3.7/site-packages/click/core.py", line 1137, in invoke
    return _process_result(sub_ctx.command.invoke(sub_ctx))
  File "/home/zack/.virtualenvs/swh/lib/python3.7/site-packages/click/core.py", line 956, in invoke
    return ctx.invoke(self.callback, **ctx.params)
  File "/home/zack/.virtualenvs/swh/lib/python3.7/site-packages/click/core.py", line 555, in invoke
    return callback(*args, **kwargs)
  File "/home/zack/.virtualenvs/swh/lib/python3.7/site-packages/click/decorators.py", line 17, in new_func
    return f(get_current_context(), *args, **kwargs)
  File "/home/zack/dati/projects/sw-heritage/git/swh-environment/swh-scanner/swh/scanner/cli.py", line 44, in scan
    loop.run_until_complete(run(path, api_url, source_tree))
  File "/usr/lib/python3.7/asyncio/base_events.py", line 583, in run_until_complete
    return future.result()
  File "/home/zack/dati/projects/sw-heritage/git/swh-environment/swh-scanner/swh/scanner/scanner.py", line 145, in run
    await _scan(root, session, api_url, source_tree)
  File "/home/zack/dati/projects/sw-heritage/git/swh-environment/swh-scanner/swh/scanner/scanner.py", line 132, in _scan
    for path, pid, found in await parse_path(root, session, api_url):
  File "/home/zack/dati/projects/sw-heritage/git/swh-environment/swh-scanner/swh/scanner/scanner.py", line 111, in parse_path
    list(parsed_paths.values()), session, api_url)
  File "/home/zack/dati/projects/sw-heritage/git/swh-environment/swh-scanner/swh/scanner/scanner.py", line 67, in pids_discovery
    return await make_request(pids)
  File "/home/zack/dati/projects/sw-heritage/git/swh-environment/swh-scanner/swh/scanner/scanner.py", line 50, in make_request
    async with session.post(endpoint, json=pids) as resp:
  File "/home/zack/.virtualenvs/swh/lib/python3.7/site-packages/aiohttp/client.py", line 1005, in __aenter__
    self._resp = await self._coro
  File "/home/zack/.virtualenvs/swh/lib/python3.7/site-packages/aiohttp/client.py", line 476, in _request
    timeout=real_timeout
  File "/home/zack/.virtualenvs/swh/lib/python3.7/site-packages/aiohttp/connector.py", line 522, in connect
    proto = await self._create_connection(req, traces, timeout)
  File "/home/zack/.virtualenvs/swh/lib/python3.7/site-packages/aiohttp/connector.py", line 854, in _create_connection
    req, traces, timeout)
  File "/home/zack/.virtualenvs/swh/lib/python3.7/site-packages/aiohttp/connector.py", line 959, in _create_direct_connection
    raise ClientConnectorError(req.connection_key, exc) from exc
aiohttp.client_exceptions.ClientConnectorError: Cannot connect to host https:443 ssl:None [Name or service not known]