{"ast_node_type":"other","tokens":[{"end":80,"kind":"keyword","start":0,"text":"debug!(\"copying"}]}
        debug!("copying preexisting metadata from {source_file:?} to {path:?}");
        let source_file = rustc_incremental::in_incr_comp_dir(&incr_comp_session_dir, saved_path);
        match rustc_fs_util::link_or_copy(&source_file, path) {