libproperties/1.1.2: WARN: Build folder is dirty, removing it: C:\J\w\cci_PR-3877\.conan\data\libproperties\1.1.2\_\_\build\f6bcf0d95fafcf303dfebe42c8562386d4cdbf69
ERROR: libproperties/1.1.2: Error in source() method, line 19
	os.rename(source_dir, self._source_subfolder)
	NameError: name 'os' is not defined