Dec 19 14:47:07 worker2 python3[30717]: [2019-12-19 14:47:07,898: ERROR/ForkPoolWorker-1] Fail to load https://softwareheritage.org/swh-ddev
                                        Traceback (most recent call last):
                                          File "/usr/lib/python3/dist-packages/swh/core/tarball.py", line 72, in uncompress
                                            shutil.unpack_archive(tarpath, extract_dir=dest)
                                          File "/usr/lib/python3.7/shutil.py", line 999, in unpack_archive
                                            func(filename, extract_dir, **kwargs)
                                          File "/usr/lib/python3.7/shutil.py", line 896, in _unpack_zipfile
                                            raise ReadError("%s is not a zip file" % filename)
                                        shutil.ReadError: /tmp/tmp8x0l824p/archive.zip is not a zip file

                                        During handling of the above exception, another exception occurred:

                                        Traceback (most recent call last):
                                          File "/usr/lib/python3/dist-packages/swh/loader/package/loader.py", line 299, in load
                                            dl_artifacts, dest=tmpdir)
                                          File "/usr/lib/python3/dist-packages/swh/loader/package/loader.py", line 212, in uncompress
                                            uncompress(a_path, dest=uncompressed_path)
                                          File "/usr/lib/python3/dist-packages/swh/core/tarball.py", line 74, in uncompress
                                            raise ValueError(f'Problem during unpacking {tarpath}. Reason: {e}')
                                        ValueError: Problem during unpacking /tmp/tmp8x0l824p/archive.zip. Reason: /tmp/tmp8x0l824p/archive.zip is not a zip file