libproperties/1.1.2: WARN: Build folder is dirty, removing it: /home/conan/w/cci_PR-3877/.conan/data/libproperties/1.1.2/_/_/build/9cf83afd07b678d38a9c1645f605875400847ff3
ERROR: libproperties/1.1.2: Error in source() method, line 40
	os.rename(source_dir, self._source_subfolder)
	NameError: name 'os' is not defined