refactor: apply rustc-ap 606 updates

.editorconfig

@@ -0,0 +1,15 @@
+root = true
+
+[*]
+charset = utf-8
+end_of_line = lf
+indent_size = 2
+indent_style = space
+trim_trailing_whitespace = true
+insert_final_newline = true
+
+[*.md]
+trim_trailing_whitespace = false
+
+[*.rs]
+indent_size = 4

src/formatting.rs

@@ -710,7 +710,7 @@ struct SilentOnIgnoredFilesEmitter {
 }
 
 impl Emitter for SilentOnIgnoredFilesEmitter {
-    fn emit_diagnostic(&mut self, db: &DiagnosticBuilder<'_>) {
+    fn emit_diagnostic(&mut self, db: &Diagnostic) {
         if let Some(primary_span) = &db.span.primary_span() {
             let file_name = self.source_map.span_to_filename(*primary_span);
             match file_name {
@@ -763,8 +763,14 @@ fn make_parse_sess(
             ColorConfig::Never
         };
 
-        let emitter_writer =
-            EmitterWriter::stderr(color_cfg, Some(source_map.clone()), false, false, None);
+        let emitter_writer = EmitterWriter::stderr(
+            color_cfg,
+            Some(source_map.clone()),
+            false,
+            false,
+            None,
+            false,
+        );
         let emitter = Box::new(SilentOnIgnoredFilesEmitter {
             has_non_ignorable_parser_errors: false,
             ignore_path_set: ignore_path_set,