Analyse following RPM build log snippet. Describe contents accurately, without speculation or suggestions for resolution.            
Your analysis must be as concise as possible, while keeping relevant information intact.
Snippet: 
[ERROR]
Traceback (most recent call last):
  File "/builddir/build/BUILD/python-twisted-24.11.0-build/twisted-twisted-24.11.0/src/twisted/trial/_synctest.py", line 1459, in _runCleanups
    f(*args, **kwargs)
  File "/usr/lib64/python3.13/locale.py", line 615, in setlocale
    return _setlocale(category, locale)
locale.Error: unsupported locale setting
A failure of the function _setlocale beacuse of setting an unsupported locale.