def METHOD_NAME(self, arglist):
    """Single worker function that is run in the Pool of workers.
    This takes, as argument list, the various tasks to perform.
    """
    def eprint(*args, **kwargs):
        print(*args, file=sys.stderr, **kwargs)
    project, toolchain, board, seed, option, build_number = arglist
    build = self.build_format.format(build_number)
    run(
        board,
        toolchain,
        project,
        None,  #params_file
        option,  #params_string
        None,  #out_dir
        self.out_prefix,
        self.overwrite,
        self.verbose,
        None,  #strategy
        seed,
        None,  #carry
        build,
        self.build_type,
        self.timeout
    )