remove once_cell dependency

dumpster/Cargo.toml

@@ -16,9 +16,8 @@ coerce-unsized = []
 derive = ["dep:dumpster_derive"]
 
 [dependencies]
-once_cell = "1.18.0"
 parking_lot = "0.12"
-dumpster_derive = {version = "0.2.0", path = "../dumpster_derive", optional = true}
+dumpster_derive = { version = "0.2.0", path = "../dumpster_derive", optional = true }
 
 [dev-dependencies]
 fastrand = "2.0.0"
@@ -29,4 +28,4 @@ features = ["derive"]
 [package.metadata.docs.rs]
 features = ["derive"]
 targets = ["x86_64-unknown-linux-gnu"]
-rustdoc-args = ["--generate-link-to-definition"]
+rustdoc-args = ["--generate-link-to-definition"]

dumpster/src/sync/collect.rs

@@ -14,13 +14,14 @@ use std::{
     collections::{hash_map::Entry, HashMap},
     mem::{replace, swap, take, transmute},
     ptr::{drop_in_place, NonNull},
-    sync::atomic::{AtomicPtr, AtomicUsize, Ordering},
+    sync::{
+        atomic::{AtomicPtr, AtomicUsize, Ordering},
+        LazyLock,
+    },
 };
 
 use parking_lot::{Mutex, RwLock};
 
-use once_cell::sync::Lazy;
-
 use crate::{ptr::Erased, Collectable, Visitor};
 
 use super::{default_collect_condition, CollectCondition, CollectInfo, Gc, GcBox, CURRENT_TAG};
@@ -102,7 +103,7 @@ enum Reachability {
 
 /// The global garbage truck.
 /// All [`TrashCans`] should eventually end up in here.
-static GARBAGE_TRUCK: Lazy<GarbageTruck> = Lazy::new(|| GarbageTruck {
+static GARBAGE_TRUCK: LazyLock<GarbageTruck> = LazyLock::new(|| GarbageTruck {
     contents: Mutex::new(HashMap::new()),
     collecting_lock: RwLock::new(()),
     n_gcs_dropped: AtomicUsize::new(0),