29adece backend: fix logging traceback

Authored and Committed by praiskup 2 years ago
    backend: fix logging traceback
    
    Traceback (most recent call last):
      File "/usr/lib/python3.9/site-packages/copr_backend/actions.py", line 456, in run
        self.log.info(mmd_yaml)
      File "/usr/lib64/python3.9/logging/__init__.py", line 1446, in info
        self._log(INFO, msg, args, **kwargs)
      File "/usr/lib64/python3.9/logging/__init__.py", line 1589, in _log
        self.handle(record)
      File "/usr/lib64/python3.9/logging/__init__.py", line 1599, in handle
        self.callHandlers(record)
      File "/usr/lib64/python3.9/logging/__init__.py", line 1661, in callHandlers
        hdlr.handle(record)
      File "/usr/lib64/python3.9/logging/__init__.py", line 952, in handle
        self.emit(record)
      File "/usr/lib/python3.9/site-packages/copr_backend/helpers.py", line 440, in emit
        record.msg = record.msg % record.args
    TypeError: not enough arguments for format string
    
    Merges: #1815