use span_suggestion_hidden

clippy_lints/src/unit_like_struct_brackets.rs

@@ -1,4 +1,4 @@
-use clippy_utils::{diagnostics::span_lint_and_sugg, source::snippet_opt};
+use clippy_utils::{diagnostics::span_lint_and_then, source::snippet_opt};
 use rustc_ast::ast::{Item, ItemKind, VariantData};
 use rustc_errors::Applicability;
 use rustc_lexer::TokenKind;
@@ -33,14 +33,18 @@ fn check_item(&mut self, cx: &EarlyContext<'_>, item: &Item) {
         let span_after_ident = item.span.with_lo(item.ident.span.hi());
 
         if let ItemKind::Struct(var_data, _) = &item.kind && has_no_fields(cx, var_data, span_after_ident) {
-            span_lint_and_sugg(
+            span_lint_and_then(
                 cx,
                 UNIT_LIKE_STRUCT_BRACKETS,
                 span_after_ident,
                 "found empty brackets on struct declaration",
-                "remove the brackets",
-                ";".to_string(),
-                Applicability::MachineApplicable
+                |diagnostic| {
+                    diagnostic.span_suggestion_hidden(
+                        span_after_ident,
+                        "remove the brackets",
+                        ";".to_string(),
+                        Applicability::MachineApplicable);
+                    },
             );
         }
     }

tests/ui/unit_like_struct_brackets.stderr

@@ -2,15 +2,18 @@ error: found empty brackets on struct declaration
   --> $DIR/unit_like_struct_brackets.rs:5:25
    |
 LL | pub struct MyEmptyStruct {} // should trigger lint
-   |                         ^^^ help: remove the brackets: `;`
+   |                         ^^^
    |
    = note: `-D clippy::unit-like-struct-brackets` implied by `-D warnings`
+   = help: remove the brackets
 
 error: found empty brackets on struct declaration
   --> $DIR/unit_like_struct_brackets.rs:6:26
    |
 LL | struct MyEmptyTupleStruct(); // should trigger lint
-   |                          ^^^ help: remove the brackets: `;`
+   |                          ^^^
+   |
+   = help: remove the brackets
 
 error: aborting due to 2 previous errors