More fixes for failures on the Windows bot

pkg/analysis_server/test/operation/test_all.dart

Index: pkg/analysis_server/test/operation/test_all.dart
diff --git a/pkg/analysis_server/test/operation/test_all.dart b/pkg/analysis_server/test/operation/test_all.dart
index ca3c425147309e2397dc36c05470c431f488f062..4296f3950acfa6d37d4c6ae7ef8700ab92928c24 100644
--- a/pkg/analysis_server/test/operation/test_all.dart
+++ b/pkg/analysis_server/test/operation/test_all.dart
@@ -6,6 +6,7 @@ library test.operation.all;
 
 import 'package:unittest/unittest.dart';
 
+import '../utils.dart';
 import 'operation_queue_test.dart' as operation_queue_test;
 import 'operation_test.dart' as operation_test;
 
@@ -13,7 +14,7 @@ import 'operation_test.dart' as operation_test;
  * Utility for manually running all tests.
  */
 main() {
-  groupSep = ' | ';
+  initializeTestEnvironment();
   group('operation', () {
     operation_queue_test.main();
     operation_test.main();