//! > Polyfill for `OnceCell` stdlib feature for use with older MSRVs
#![cfg_attr(docsrs,feature(doc_auto_cfg))]#![warn(clippy::print_stderr)]#![warn(clippy::print_stdout)]pubmodsync;#[doc=include_str!("../README.md")]#[cfg(doctest)]pubstructReadmeDoctests;