diff --git a/hive-c0re/src/job_queue/tests.rs b/hive-c0re/src/job_queue/tests.rs
index a783bf91..bbf06d45 100644
--- a/hive-c0re/src/job_queue/tests.rs
+++ b/hive-c0re/src/job_queue/tests.rs
@@ -146,12 +146,12 @@ fn declared_shape(q: &JobQueue) -> Vec<Declared> {
 fn declared_shape_filtered(q: &JobQueue, keep: &dyn Fn(&NodeKind) -> bool) -> Vec<Declared> {
     let sched = q.sched().lock().expect("job_queue mutex poisoned");
     let graph = sched.graph();
-    let kind_of = |id: NodeId| graph.node(id).map(|n| n.payload.as_str());
+    let kind_of = |id: NodeId| graph.node(id).map(|n| <&str>::from(&n.payload));
     graph
         .nodes()
         .filter(|n| keep(&n.payload))
         .map(|n| Declared {
-            kind: n.payload.as_str(),
+            kind: <&str>::from(&n.payload),
             parent: n.parent.and_then(kind_of),
             after: n
                 .deps
@@ -175,7 +175,7 @@ fn node_of(q: &JobQueue, kind: &str) -> hive_jobq::NodeId {
     let graph = sched.graph();
     let mut found: Vec<_> = graph
         .nodes()
-        .filter(|n| n.payload.as_str() == kind)
+        .filter(|n| <&str>::from(&n.payload) == kind)
         .map(|n| n.id)
         .collect();
     assert_eq!(
@@ -225,7 +225,7 @@ fn pending_kinds_filtered(q: &JobQueue, keep: &dyn Fn(&NodeKind) -> bool) -> Vec
     graph
         .nodes()
         .filter(|n| n.state == State::Pending && keep(&n.payload))
-        .map(|n| n.payload.as_str())
+        .map(|n| <&str>::from(&n.payload))
         .collect()
 }
 
@@ -275,7 +275,7 @@ fn declared_resources_of_kind(q: &JobQueue, kind: &str) -> Vec<Vec<Resource>> {
     let graph = sched.graph();
     let mut rows: Vec<Vec<Resource>> = graph
         .nodes()
-        .filter(|n| n.payload.as_str() == kind)
+        .filter(|n| <&str>::from(&n.payload) == kind)
         .map(|n| {
             n.deps
                 .iter()