avoid the use of doc_auto_cfg

Author: magiclen

Cargo.toml

@@ -36,4 +36,4 @@ bit = ["rust_decimal"]
 
 [package.metadata.docs.rs]
 all-features = true
-rustdoc-args = ["--cfg", "docsrs"]
+rustdoc-args = ["--cfg", "docsrs_1_92"]

src/lib.rs

@@ -202,7 +202,8 @@ features = ["rocket"]
 */
 
 #![cfg_attr(not(feature = "std"), no_std)]
-#![cfg_attr(docsrs, feature(doc_auto_cfg))]
+#![allow(unexpected_cfgs)]
+#![cfg_attr(docsrs_1_92, feature(doc_cfg))]
 
 #[cfg(all(feature = "serde", any(feature = "byte", feature = "bit")))]
 #[macro_use]