fix lints

Cargo.toml

@@ -1,6 +1,6 @@
 [package]
 name = "ruc"
-version = "6.0.0"
+version = "6.0.1"
 authors = ["[email protected]"]
 edition = "2021"
 description = "Rust Util Collections"
@@ -14,8 +14,6 @@ repository = "https://github.com/rust-util-collections/ruc.git"
 features = ["full"]
 
 [dependencies]
-once_cell = "1.18"
-
 sha3 = { version = "0.10.8", optional = true }
 
 ed25519-zebra = { version = "4.0.0", optional = true }

Makefile

@@ -17,7 +17,7 @@ test:
 
 update:
 	rustup update stable
-	cargo update
+	cargo update --verbose
 
 fmt:
 	cargo +nightly fmt

README.md

@@ -2,7 +2,7 @@
 [![Rust](https://github.com/rust-util-collections/ruc/actions/workflows/rust.yml/badge.svg)](https://github.com/rust-util-collections/ruc/actions/workflows/rust.yml)
 [![Latest Version](https://img.shields.io/crates/v/RUC.svg)](https://crates.io/crates/RUC)
 [![Rust Documentation](https://img.shields.io/badge/api-rustdoc-blue.svg)](https://docs.rs/RUC)
-![Minimum rustc version](https://img.shields.io/badge/rustc-1.78+-lightgray.svg)
+![Minimum rustc version](https://img.shields.io/badge/rustc-1.81+-lightgray.svg)
 
 # ruc
 

src/crypto/sig/ed25519/readable/mod.rs

@@ -5,13 +5,13 @@ use std::fmt;
 pub use ed25519_zebra::SigningKey as RawSignKey;
 pub use ed25519_zebra::VerificationKey as RawVerifyKey;
 
-#[cfg_attr(feature = "SerDe", derive(serde::Deserialize, serde::Serialize))]
+#[derive(serde::Deserialize, serde::Serialize)]
 pub struct SignKey(String);
 
-#[cfg_attr(feature = "SerDe", derive(serde::Deserialize, serde::Serialize))]
+#[derive(serde::Deserialize, serde::Serialize)]
 pub struct VerifyKey(String);
 
-#[cfg_attr(feature = "SerDe", derive(serde::Deserialize, serde::Serialize))]
+#[derive(serde::Deserialize, serde::Serialize)]
 pub struct Sig(String);
 
 // <signing key + verify key> in base64 format

src/err/mod.rs

@@ -30,15 +30,13 @@ use core::{
     fmt::{Debug, Display},
 };
 
-use std::{collections::HashSet, error::Error, sync::Mutex};
-
-use once_cell::sync::Lazy;
+use std::{collections::HashSet, error::Error, sync::LazyLock, sync::Mutex};
 
 // avoid out-of-order printing
 static LOG_LK: Mutex<()> = Mutex::new(());
 
 /// `INFO` or `ERROR`, if mismatch, default to `INFO`
-pub static LOG_LEVEL: Lazy<String> = Lazy::new(|| {
+pub static LOG_LEVEL: LazyLock<String> = LazyLock::new(|| {
     if let Ok(l) = std::env::var("RUC_LOG_LEVEL") {
         if "ERROR" == l {
             return "ERROR".to_owned();