def _clean_tmp_dirs(self):
def onerror(fnc, path, excinfo):<EOL><INDENT>self.logger.info("<STR_LIT>", path, excinfo[<NUM_LIT:1>])<EOL><DEDENT>shutil.rmtree(self.tmpdir, onerror=onerror)<EOL>self.tmpdir = None<EOL>global _backend_tmpdir<EOL>_backend_tmpdir = None<EOL>
Remove temporary dir associated with this backend instance.

:return: None