1 files changed, 4 insertions, 6 deletions
diff --git a/compiler/rustc_parse/src/parser/nonterminal.rs b/compiler/rustc_parse/src/parser/nonterminal.rs
index 7a4d53ed8..adb0d372a 100644
--- a/compiler/rustc_parse/src/parser/nonterminal.rs
+++ b/compiler/rustc_parse/src/parser/nonterminal.rs
@@ -20,12 +20,10 @@ impl<'a> Parser<'a> {
     pub fn nonterminal_may_begin_with(kind: NonterminalKind, token: &Token) -> bool {
         /// Checks whether the non-terminal may contain a single (non-keyword) identifier.
         fn may_be_ident(nt: &token::Nonterminal) -> bool {
-            match *nt {
-                token::NtItem(_) | token::NtBlock(_) | token::NtVis(_) | token::NtLifetime(_) => {
-                    false
-                }
-                _ => true,
-            }
+            !matches!(
+                *nt,
+                token::NtItem(_) | token::NtBlock(_) | token::NtVis(_) | token::NtLifetime(_)
+            )
         }
 
         match kind {