Commit suggested changes.

Co-authored-by: Joey Beauvais-Feisthauer <57161378+JoeyBF@users.noreply.github.com>

rayon-core/src/thread_pool/test.rs

@@ -425,7 +425,7 @@ fn nested_thread_pools_deadlock() {
     // The lock thread pool must be full_blocking for this test to pass.
     let lock_pool = Arc::new(
         ThreadPoolBuilder::new()
-            .full_blocking()
+            .full_blocking(true)
             .num_threads(1)
             .build()
             .unwrap(),