Do relevant imports for rustic-cargo-test

test/rustic-cargo-test.el

@@ -1,5 +1,9 @@
 ;; -*- lexical-binding: t -*-
 ;; Before editing, eval (load-file "test-helper.el")
+(require 'rustic)
+(require 'ert)
+
+(load-file "test-helper.el")
 
 (ert-deftest rustic-test-cargo-test ()
   (let* ((string "#[test]