Removes once_cell dependency

Author: SirCipher

Cargo.toml

@@ -126,7 +126,6 @@ axum = "0.6.20"
 hyper-staticfile = "0.9"
 httparse = "1.8"
 sha1 = "0.10"
-once_cell = "1.17.1"
 waker-fn = "1.1.0"
 num = "0.4"
 smol_str = "0.2.0"

server/swimos_introspection/Cargo.toml

@@ -22,7 +22,6 @@ tracing = { workspace = true }
 uuid = { workspace = true }
 thiserror = { workspace = true }
 parking_lot = { workspace = true, features = ["send_guard"] }
-once_cell = { workspace = true }
 
 [dev-dependencies]
 tokio = { workspace = true, features = ["rt", "macros", "time", "test-util"] }

server/swimos_introspection/src/meta_mesh/tests.rs

@@ -17,12 +17,11 @@ use crate::model::AgentIntrospectionUpdater;
 use crate::task::AgentMeta;
 use futures::future::{join, BoxFuture};
 use futures::{SinkExt, StreamExt};
-use once_cell::sync::OnceCell;
 use parking_lot::RwLock;
 use std::fmt::Debug;
 use std::future::Future;
 use std::num::NonZeroUsize;
-use std::sync::Arc;
+use std::sync::{Arc, OnceLock};
 use swimos_agent_protocol::encoding::lane::{MapLaneResponseDecoder, RawValueLaneRequestEncoder};
 use swimos_agent_protocol::{LaneRequest, LaneResponse, MapOperation};
 use swimos_api::agent::{AgentContext, HttpLaneRequestChannel, LaneConfig};
@@ -198,7 +197,7 @@ fn push_uri(forest: &mut UriForest<AgentMeta>, reporter: &UplinkReporter, path:
     );
 }
 
-static NOW: OnceCell<Timestamp> = OnceCell::new();
+static NOW: OnceLock<Timestamp> = OnceLock::new();
 
 #[tokio::test]
 async fn count_lanes_empty() {