Error in core since rust 1.81

Author: stbuehler

Cargo.toml

@@ -3,7 +3,7 @@ name = "cidr"
 # also bump version in html_root_url in src/lib.rs
 version = "0.2.3"
 edition = "2021"
-rust-version = "1.77"
+rust-version = "1.81"
 authors = ["Stefan Bühler <[email protected]>"]
 description = "IP network and IP host within network types"
 documentation = "https://docs.rs/cidr"

src/errors.rs

@@ -1,12 +1,11 @@
 //! Various error types returned by function in this crate
 
 use core::{
+	error::Error,
 	fmt,
 	net::AddrParseError,
 	num::ParseIntError,
 };
-#[cfg(feature = "std")]
-use std::error::Error;
 
 use crate::Family;
 
@@ -37,7 +36,6 @@ impl fmt::Display for NetworkLengthTooLongError {
 	}
 }
 
-#[cfg(feature = "std")]
 impl Error for NetworkLengthTooLongError {
 	fn description(&self) -> &str {
 		"network length too long"

src/lib.rs

@@ -28,7 +28,7 @@
 //!
 //! # Feature `std`
 //!
-//! Enabled by default, used for [`std::error::Error`] implementations.
+//! Enabled by default, currently unused.
 //!
 //! # Feature `serde`
 //!