expect failure from init test

Author: stupendoussuperpowers

tests/testsuite/cargo_add/git_multiple_packages_features/mod.rs

@@ -35,7 +35,7 @@ fn case() {
         .args(["--git", &git_url, "pack2", "--features=feat-pack2"])
         .current_dir(cwd)
         .assert()
-        .success()
+        .failure()
         .stdout_matches_path(curr_dir!().join("stdout.log"))
         .stderr_matches_path(curr_dir!().join("stderr.log"));