dynamic dispatch

Author: Oneirical

tests/run-make/mixing-formats/rmake.rs

@@ -15,7 +15,7 @@
 use run_make_support::{rustc, tmp_dir};
 use std::fs;
 
-fn test_with_teardown(rustc_calls: Fn()) {
+fn test_with_teardown(rustc_calls: &dyn Fn()) {
     rustc_calls();
     fs::remove_dir_all(tmp_dir()).unwrap();
     fs::create_dir(tmp_dir()).unwrap();