diff --git a/compiler/rustc_span/src/symbol.rs b/compiler/rustc_span/src/symbol.rs
index 08925761b393cdd5f30e27bb93e5d0897ba3ffb8..54eb7bef5f205f3f35b04c2ec41072dbbd8cc0b8 100644
--- a/compiler/rustc_span/src/symbol.rs
+++ b/compiler/rustc_span/src/symbol.rs
@@ -372,6 +372,7 @@
         arm_target_feature,
         array,
         arrays,
+        as_mut_ptr,
         as_ptr,
         as_ref,
         as_str,
@@ -858,6 +859,7 @@
         item,
         item_like_imports,
         iter,
+        iter_mut,
         iter_repeat,
         iterator_collect_fn,
         kcfi,
diff --git a/src/tools/clippy/clippy_lints/src/methods/bytecount.rs b/src/tools/clippy/clippy_lints/src/methods/bytecount.rs
index fef90f6eba49525eb5c0f827aee1e823d97808df..f490a717554073463f37e7d205383564f80297ff 100644
--- a/src/tools/clippy/clippy_lints/src/methods/bytecount.rs
+++ b/src/tools/clippy/clippy_lints/src/methods/bytecount.rs
@@ -45,7 +45,7 @@ pub(super) fn check<'tcx>(
             let haystack = if let ExprKind::MethodCall(path, receiver, [], _) =
                     filter_recv.kind {
                 let p = path.ident.name;
-                if p == sym::iter || p == sym!(iter_mut) {
+                if p == sym::iter || p == sym::iter_mut {
                     receiver
                 } else {
                     filter_recv
diff --git a/tests/ui/proc-macro/meta-macro-hygiene.stdout b/tests/ui/proc-macro/meta-macro-hygiene.stdout
index 17b69daa4f0e85016e9ee98f1572fe32cc58ca82..4a2200091b27e095009bf17949fce51b680f566a 100644
--- a/tests/ui/proc-macro/meta-macro-hygiene.stdout
+++ b/tests/ui/proc-macro/meta-macro-hygiene.stdout
@@ -18,7 +18,7 @@ Respanned: TokenStream [Ident { ident: "$crate", span: $DIR/auxiliary/make-macro
 use core /* 0#1 */::prelude /* 0#1 */::rust_2018 /* 0#1 */::*;
 #[macro_use /* 0#1 */]
 extern crate core /* 0#1 */;
-extern crate compiler_builtins /* 442 */ as _ /* 0#1 */;
+extern crate compiler_builtins /* 443 */ as _ /* 0#1 */;
 // Don't load unnecessary hygiene information from std
 extern crate std /* 0#0 */;
 
diff --git a/tests/ui/proc-macro/nonterminal-token-hygiene.stdout b/tests/ui/proc-macro/nonterminal-token-hygiene.stdout
index 76d54ab2f1386b80944e11df8e3469104000443b..077a728a7a6bab6c20bb0ccb20756376299a2fc2 100644
--- a/tests/ui/proc-macro/nonterminal-token-hygiene.stdout
+++ b/tests/ui/proc-macro/nonterminal-token-hygiene.stdout
@@ -39,7 +39,7 @@ PRINT-BANG INPUT (DEBUG): TokenStream [
 use ::core /* 0#1 */::prelude /* 0#1 */::rust_2015 /* 0#1 */::*;
 #[macro_use /* 0#1 */]
 extern crate core /* 0#2 */;
-extern crate compiler_builtins /* 442 */ as _ /* 0#2 */;
+extern crate compiler_builtins /* 443 */ as _ /* 0#2 */;
 // Don't load unnecessary hygiene information from std
 extern crate std /* 0#0 */;