Add a route for scrape-examples-help.html. Fixes #1960.

Author: willcrichton

src/web/routes.rs

@@ -259,6 +259,10 @@ pub(super) fn build_routes() -> Routes {
         "/:crate/:version/settings.html",
         super::rustdoc::rustdoc_html_server_handler,
     );
+    routes.rustdoc_page(
+        "/:crate/:version/scrape-examples-help.html",
+        super::rustdoc::rustdoc_html_server_handler,
+    );
     routes.rustdoc_page(
         "/:crate/:version/all.html",
         super::rustdoc::rustdoc_html_server_handler,

src/web/rustdoc.rs

@@ -933,6 +933,7 @@ mod test {
                 .version("0.1.0")
                 .archive_storage(archive_storage)
                 .rustdoc_file("settings.html")
+                .rustdoc_file("scrape-examples-help.html")
                 .rustdoc_file("directory_1/index.html")
                 .rustdoc_file("directory_2.html/index.html")
                 .rustdoc_file("all.html")
@@ -977,6 +978,12 @@ mod test {
                 CachePolicy::ForeverInCdnAndStaleInBrowser,
                 &env.config(),
             )?;
+            assert_success_cached(
+                "/buggy/0.1.0/scrape-examples-help.html",
+                web,
+                CachePolicy::ForeverInCdnAndStaleInBrowser,
+                &env.config(),
+            )?;
             assert_success_cached(
                 "/buggy/0.1.0/all.html",
                 web,