message: Add unstable notice for --scrape-examples
diff: @@ -53,6 +53,13 @@ pub fn exec(config: &mut Config, args: &ArgMatches<'_>) -> CliResult {
  compile_opts.rustdoc_document_private_items = args.is_present("document-private-items");
  compile_opts.rustdoc_scrape_examples = args.is_present("scrape-examples");
  + if compile_opts.rustdoc_scrape_examples {
  + // FIXME(wcrichto): add a tracking issue once this gets merged and add issue number below
  + config
  + .cli_unstable()
  + .fail_if_stable_opt("--scrape-examples", 0)?;
  + }
  +
  let doc_opts = DocOptions {
  open_result: args.is_present("open"),
  compile_opts,
  