cleanup: use run_in_tmpdir in run-make/rustdoc-scrape-examples-paths

tests/run-make/rustdoc-scrape-examples-paths/rmake.rs

@@ -1,16 +1,16 @@
 //! Test to ensure that the rustdoc `scrape-examples` feature is not panicking.
 //! Regression test for <https://github.com/rust-lang/rust/issues/144752>.
 
-use run_make_support::{cargo, path, rfs};
+use run_make_support::cargo;
+use run_make_support::scoped_run::run_in_tmpdir;
 
 fn main() {
     // We copy the crate to be documented "outside" to prevent documenting
     // the whole compiler.
-    let tmp = std::env::temp_dir();
-    let test_crate = tmp.join("foo");
-    rfs::copy_dir_all(path("foo"), &test_crate);
-
-    // The `scrape-examples` feature is also implemented in `cargo` so instead of reproducing
-    // what `cargo` does, better to just let `cargo` do it.
-    cargo().current_dir(&test_crate).args(["doc", "-p", "foo", "-Zrustdoc-scrape-examples"]).run();
+    std::env::set_current_dir("foo").unwrap();
+    run_in_tmpdir(|| {
+        // The `scrape-examples` feature is also implemented in `cargo` so instead of reproducing
+        // what `cargo` does, better to just let `cargo` do it.
+        cargo().args(["doc", "-p", "foo", "-Zrustdoc-scrape-examples"]).run();
+    })
 }