diff --git a/crates/workspace-server/src/server/tests/restored_parent_control_tests.rs b/crates/workspace-server/src/server/tests/restored_parent_control_tests.rs
index d1a4d6c61..e8249cf8b 100644
--- a/crates/workspace-server/src/server/tests/restored_parent_control_tests.rs
+++ b/crates/workspace-server/src/server/tests/restored_parent_control_tests.rs
@@ -138,9 +138,9 @@ impl RuntimeWorkerFactory for CapturingFactory {
         worker_ref: &worker_runtime::identity::WorkerRef,
         workspace_id: Option<&str>,
         handle: &worker::WorkerHandle,
-    ) {
+    ) -> std::result::Result<(), String> {
         self.inner
-            .activate_restored_controller(worker_ref, workspace_id, handle);
+            .activate_restored_controller(worker_ref, workspace_id, handle)
     }
 }
 
diff --git a/crates/workspace-server/src/server/tests/subjektiv_journal_connected_tests.rs b/crates/workspace-server/src/server/tests/subjektiv_journal_connected_tests.rs
index 3b9215113..7c5fe0442 100644
--- a/crates/workspace-server/src/server/tests/subjektiv_journal_connected_tests.rs
+++ b/crates/workspace-server/src/server/tests/subjektiv_journal_connected_tests.rs
@@ -1084,9 +1084,9 @@ impl worker_runtime::worker_backend::RuntimeWorkerFactory for RestoreAuthFactory
         worker_ref: &worker_runtime::identity::WorkerRef,
         workspace_id: Option<&str>,
         handle: &worker::WorkerHandle,
-    ) {
+    ) -> std::result::Result<(), String> {
         self.inner
-            .activate_restored_controller(worker_ref, workspace_id, handle);
+            .activate_restored_controller(worker_ref, workspace_id, handle)
     }
 }
 
diff --git a/crates/workspace-server/src/server_workspace_config_wip_tests.rs b/crates/workspace-server/src/server_workspace_config_wip_tests.rs
index 9e970e17d..7c719a648 100644
--- a/crates/workspace-server/src/server_workspace_config_wip_tests.rs
+++ b/crates/workspace-server/src/server_workspace_config_wip_tests.rs
@@ -636,9 +636,9 @@ impl worker_runtime::worker_backend::RuntimeWorkerFactory for ConfigCaptureFacto
         worker_ref: &worker_runtime::identity::WorkerRef,
         workspace_id: Option<&str>,
         handle: &worker::WorkerHandle,
-    ) {
+    ) -> std::result::Result<(), String> {
         self.inner
-            .activate_restored_controller(worker_ref, workspace_id, handle);
+            .activate_restored_controller(worker_ref, workspace_id, handle)
     }
 }