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-rw-r--r--src/librustdoc/clean/inline.rs2
-rw-r--r--src/librustdoc/clean/types.rs1
-rw-r--r--src/librustdoc/clean/utils.rs2
-rw-r--r--src/librustdoc/html/render/write_shared.rs15
-rw-r--r--src/librustdoc/passes/lint/redundant_explicit_links.rs2
5 files changed, 10 insertions, 12 deletions
diff --git a/src/librustdoc/clean/inline.rs b/src/librustdoc/clean/inline.rs
index 013814b1f7d..974ba1e3bd9 100644
--- a/src/librustdoc/clean/inline.rs
+++ b/src/librustdoc/clean/inline.rs
@@ -599,7 +599,7 @@ fn build_module_items(
                 let prim_ty = clean::PrimitiveType::from(p);
                 items.push(clean::Item {
                     name: None,
-                    attrs: Box::new(clean::Attributes::default()),
+                    attrs: Box::default(),
                     // We can use the item's `DefId` directly since the only information ever used
                     // from it is `DefId.krate`.
                     item_id: ItemId::DefId(did),
diff --git a/src/librustdoc/clean/types.rs b/src/librustdoc/clean/types.rs
index a718cb37d89..88ee4e3a2ab 100644
--- a/src/librustdoc/clean/types.rs
+++ b/src/librustdoc/clean/types.rs
@@ -1327,6 +1327,7 @@ impl WherePredicate {
 pub(crate) enum GenericParamDefKind {
     Lifetime { outlives: ThinVec<Lifetime> },
     Type { did: DefId, bounds: ThinVec<GenericBound>, default: Option<Box<Type>>, synthetic: bool },
+    // Option<Box<String>> makes this type smaller than `Option<String>` would.
     Const { ty: Box<Type>, default: Option<Box<String>>, is_host_effect: bool },
 }
 
diff --git a/src/librustdoc/clean/utils.rs b/src/librustdoc/clean/utils.rs
index dea7bfaf7e2..ca1b782492c 100644
--- a/src/librustdoc/clean/utils.rs
+++ b/src/librustdoc/clean/utils.rs
@@ -588,7 +588,7 @@ pub(crate) fn has_doc_flag(tcx: TyCtxt<'_>, did: DefId, flag: Symbol) -> bool {
 /// Set by `bootstrap::Builder::doc_rust_lang_org_channel` in order to keep tests passing on beta/stable.
 pub(crate) const DOC_RUST_LANG_ORG_CHANNEL: &str = env!("DOC_RUST_LANG_ORG_CHANNEL");
 pub(crate) static DOC_CHANNEL: Lazy<&'static str> =
-    Lazy::new(|| DOC_RUST_LANG_ORG_CHANNEL.rsplit("/").filter(|c| !c.is_empty()).next().unwrap());
+    Lazy::new(|| DOC_RUST_LANG_ORG_CHANNEL.rsplit('/').filter(|c| !c.is_empty()).next().unwrap());
 
 /// Render a sequence of macro arms in a format suitable for displaying to the user
 /// as part of an item declaration.
diff --git a/src/librustdoc/html/render/write_shared.rs b/src/librustdoc/html/render/write_shared.rs
index 3e58dd96ed9..d2c7c578c08 100644
--- a/src/librustdoc/html/render/write_shared.rs
+++ b/src/librustdoc/html/render/write_shared.rs
@@ -356,15 +356,12 @@ if (typeof exports !== 'undefined') {exports.searchIndex = searchIndex};
 
             let content = format!(
                 "<h1>List of all crates</h1><ul class=\"all-items\">{}</ul>",
-                krates
-                    .iter()
-                    .map(|s| {
-                        format!(
-                            "<li><a href=\"{trailing_slash}index.html\">{s}</a></li>",
-                            trailing_slash = ensure_trailing_slash(s),
-                        )
-                    })
-                    .collect::<String>()
+                krates.iter().format_with("", |k, f| {
+                    f(&format_args!(
+                        "<li><a href=\"{trailing_slash}index.html\">{k}</a></li>",
+                        trailing_slash = ensure_trailing_slash(k),
+                    ))
+                })
             );
             let v = layout::render(&shared.layout, &page, "", content, &shared.style_files);
             shared.fs.write(dst, v)?;
diff --git a/src/librustdoc/passes/lint/redundant_explicit_links.rs b/src/librustdoc/passes/lint/redundant_explicit_links.rs
index 0c15bf5f764..472781e7d22 100644
--- a/src/librustdoc/passes/lint/redundant_explicit_links.rs
+++ b/src/librustdoc/passes/lint/redundant_explicit_links.rs
@@ -87,7 +87,7 @@ fn check_redundant_explicit_link<'md>(
                 let link_data = collect_link_data(&mut offset_iter);
 
                 if let Some(resolvable_link) = link_data.resolvable_link.as_ref() {
-                    if &link_data.display_link.replace("`", "") != resolvable_link {
+                    if &link_data.display_link.replace('`', "") != resolvable_link {
                         // Skips if display link does not match to actual
                         // resolvable link, usually happens if display link
                         // has several segments, e.g.