fix clippy::single_char_pattern perf findings

2 files changed, 3 insertions, 3 deletions

diff --git a/src/librustdoc/html/render/cache.rs b/src/librustdoc/html/render/cache.rs
index 2f7214e958e..631eacc9618 100644
--- a/src/librustdoc/html/render/cache.rs
+++ b/src/librustdoc/html/render/cache.rs
@@ -184,8 +184,8 @@ crate fn build_index<'tcx>(krate: &clean::Crate, cache: &mut Cache, tcx: TyCtxt<
         })
         .expect("failed serde conversion")
         // All these `replace` calls are because we have to go through JS string for JSON content.
-        .replace(r"\", r"\\")
-        .replace("'", r"\'")
+        .replace(r#"\"#, r"\\")
+        .replace(r#"'"#, r"\'")
         // We need to escape double quotes for the JSON.
         .replace("\\\"", "\\\\\"")
     )
diff --git a/src/librustdoc/html/render/mod.rs b/src/librustdoc/html/render/mod.rs
index 166e0840127..c67fe1fef40 100644
--- a/src/librustdoc/html/render/mod.rs
+++ b/src/librustdoc/html/render/mod.rs
@@ -989,7 +989,7 @@ fn attributes(it: &clean::Item) -> Vec<String> {
         .iter()
         .filter_map(|attr| {
             if ALLOWED_ATTRIBUTES.contains(&attr.name_or_empty()) {
-                Some(pprust::attribute_to_string(attr).replace("\n", "").replace("  ", " "))
+                Some(pprust::attribute_to_string(attr).replace('\n', "").replace("  ", " "))
             } else {
                 None
             }