Handle invalidation of corrupt cache files #2674

Poetry
Version: 1.1.0a3
Python:  3.8.3

Virtualenv
Python:         3.8.3
Implementation: CPython
Path:           /path/to/project/.venv
Valid:          True

System
Platform: linux
OS:       posix
Python:   /usr

  EnvCommandError

  Command ['/path/to/project/.venv/bin/python', '-m', 'pip', 'install', '--no-deps', 'file:///home/user/.cache/pypoetry/artifacts/c8/9d/8a/0ac7b9700197ce07d35f1f4db4c2afa79c83149e7ad6fafd4e82aa1143/traitlets-4.3.3-py2.py3-none-any.whl'] errored with the following return code 2, and output: 
  Processing /home/user/.cache/pypoetry/artifacts/c8/9d/8a/0ac7b9700197ce07d35f1f4db4c2afa79c83149e7ad6fafd4e82aa1143/traitlets-4.3.3-py2.py3-none-any.whl
  ERROR: Exception:
  Traceback (most recent call last):
    File "/path/to/project/.venv/lib64/python3.8/site-packages/pip/_internal/cli/base_command.py", line 153, in _main
      status = self.run(options, args)
    File "/path/to/project/.venv/lib64/python3.8/site-packages/pip/_internal/commands/install.py", line 401, in run
      resolver.resolve(requirement_set)
    File "/path/to/project/.venv/lib64/python3.8/site-packages/pip/_internal/legacy_resolve.py", line 202, in resolve
      self._resolve_one(requirement_set, req)
    File "/path/to/project/.venv/lib64/python3.8/site-packages/pip/_internal/legacy_resolve.py", line 368, in _resolve_one
      abstract_dist = self._get_abstract_dist_for(req_to_install)
    File "/path/to/project/.venv/lib64/python3.8/site-packages/pip/_internal/legacy_resolve.py", line 315, in _get_abstract_dist_for
      abstract_dist = self.preparer.prepare_linked_requirement(
    File "/path/to/project/.venv/lib64/python3.8/site-packages/pip/_internal/operations/prepare.py", line 191, in prepare_linked_requirement
      unpack_url(
    File "/path/to/project/.venv/lib64/python3.8/site-packages/pip/_internal/download.py", line 465, in unpack_url
      unpack_file_url(link, location, download_dir, hashes=hashes)
    File "/path/to/project/.venv/lib64/python3.8/site-packages/pip/_internal/download.py", line 429, in unpack_file_url
      unpack_file(from_path, location, content_type)
    File "/path/to/project/.venv/lib64/python3.8/site-packages/pip/_internal/utils/unpacking.py", line 249, in unpack_file
      unzip_file(
    File "/path/to/project/.venv/lib64/python3.8/site-packages/pip/_internal/utils/unpacking.py", line 114, in unzip_file
      zip = zipfile.ZipFile(zipfp, allowZip64=True)
    File "/usr/lib64/python3.8/zipfile.py", line 1268, in __init__
      self._RealGetContents()
    File "/usr/lib64/python3.8/zipfile.py", line 1335, in _RealGetContents
      raise BadZipFile("File is not a zip file")
  zipfile.BadZipFile: File is not a zip file
  WARNING: You are using pip version 19.3.1; however, version 20.1.1 is available.
  You should consider upgrading via the 'pip install --upgrade pip' command.
  

  at ~/.local/lib/python3.8/site-packages/poetry/utils/env.py:937 in _run
       933│                 output = subprocess.check_output(
       934│                     cmd, stderr=subprocess.STDOUT, **kwargs
       935│                 )
       936│         except CalledProcessError as e:
    →  937│             raise EnvCommandError(e, input=input_)
       938│ 
       939│         return decode(output)
       940│ 
       941│     def execute(self, bin, *args, **kwargs):