Traceback (most recent call last):


 "C:\projects\tuf\tests\test_key_revocation_integration.py", line 189, in test_timestamp_key_revocation

self.repository_updater.refresh()


 "c:\projects\tuf\tuf\client\updater.py", line 1094, in refresh

self._update_metadata('timestamp', DEFAULT_TIMESTAMP_UPPERLENGTH)


 "c:\projects\tuf\tuf\client\updater.py", line 1786, in _update_metadata

upperbound_filelength, version)


 "c:\projects\tuf\tuf\client\updater.py", line 1602, in _get_metadata_file

raise tuf.exceptions.NoWorkingMirrorError(file_mirror_errors)
NoWorkingMirrorError: No working mirror was found:

Traceback (most recent call last):

 "<stdin>", line 1, in <module>TypeError: 'FooFunction' object is not callable