Remove once_cell and async-trait

Author: sbernauer

Cargo.lock

@@ -21,10 +21,8 @@ edition = "2021"
 maintenance = { status = "experimental" }
 
 [dependencies]
-async-trait = "0.1.80" # TODO: Still needed?
 byteorder = "1.5.0"
 futures = "0.3.31"
-once_cell = "1.21.3" # TODO: Still needed?
 pin-project = "1.1.10"
 snafu = "0.8.6"
 tokio = { version = "1.47.1", features = ["net", "rt", "time"] }

Cargo.toml

@@ -1,4 +1,3 @@
-use async_trait::async_trait;
 use std::error::Error;
 use std::net::SocketAddr;
 use tokio::io::{AsyncRead, AsyncWrite};
@@ -16,14 +15,14 @@ pub(crate) use self::request::Request;
 pub(crate) use self::response::Response;
 pub(crate) use self::watch::Watch;
 
-#[async_trait]
 pub trait ZooKeeperTransport: AsyncRead + AsyncWrite + Sized + Send + 'static {
     type Addr: Send + Clone;
     type ConnectError: Error + Send + Sync + 'static;
-    async fn connect(addr: Self::Addr) -> Result<Self, Self::ConnectError>;
+    fn connect(
+        addr: Self::Addr,
+    ) -> impl std::future::Future<Output = Result<Self, Self::ConnectError>> + std::marker::Send;
 }
 
-#[async_trait]
 impl ZooKeeperTransport for tokio::net::TcpStream {
     type Addr = SocketAddr;
     type ConnectError = tokio::io::Error;

src/proto/mod.rs

@@ -2,8 +2,7 @@ use std::fmt;
 use std::ops;
 
 use std::string::ToString;
-
-use once_cell::sync::Lazy;
+use std::sync::LazyLock;
 
 /// Describes the ability of a user to perform a certain action.
 ///
@@ -189,11 +188,12 @@ impl Acl {
     }
 }
 
-static ACL_CREATOR_ALL: Lazy<[Acl; 1]> = Lazy::new(|| [Acl::new(Permission::ALL, "auth", "")]);
-static ACL_OPEN_UNSAFE: Lazy<[Acl; 1]> =
-    Lazy::new(|| [Acl::new(Permission::ALL, "world", "anyone")]);
-static ACL_READ_UNSAFE: Lazy<[Acl; 1]> =
-    Lazy::new(|| [Acl::new(Permission::READ, "world", "anyone")]);
+static ACL_CREATOR_ALL: LazyLock<[Acl; 1]> =
+    LazyLock::new(|| [Acl::new(Permission::ALL, "auth", "")]);
+static ACL_OPEN_UNSAFE: LazyLock<[Acl; 1]> =
+    LazyLock::new(|| [Acl::new(Permission::ALL, "world", "anyone")]);
+static ACL_READ_UNSAFE: LazyLock<[Acl; 1]> =
+    LazyLock::new(|| [Acl::new(Permission::READ, "world", "anyone")]);
 
 impl fmt::Display for Acl {
     fn fmt(&self, f: &mut fmt::Formatter) -> fmt::Result {