fix load tests

compiler/build/src/program.rs

@@ -155,9 +155,7 @@ pub fn gen(
                                 let proc = PartialProc {
                                     annotation,
                                     // This is a 0-arity thunk, so it has no arguments.
-                                    pattern_symbols: bumpalo::collections::Vec::new_in(
-                                        mono_env.arena,
-                                    ),
+                                    pattern_symbols: &[],
                                     is_tail_recursive: false,
                                     body,
                                 };