debug analyzer test on windows

pkg/analyzer/test/src/context/builder_test.dart

Index: pkg/analyzer/test/src/context/builder_test.dart
diff --git a/pkg/analyzer/test/src/context/builder_test.dart b/pkg/analyzer/test/src/context/builder_test.dart
index 83e059329844874a986cc88fb19345bfd8553651..74321857a196342a007324162d5ec3b3a1b9843a 100644
--- a/pkg/analyzer/test/src/context/builder_test.dart
+++ b/pkg/analyzer/test/src/context/builder_test.dart
@@ -735,11 +735,17 @@ linter:
   rules:
     - mock_lint_rule
 ''');
-    AnalysisOptions options = builder.getAnalysisOptions(
-        resourceProvider.convertPath('/some/directory/path'));
+    String projPath = resourceProvider.convertPath('/some/directory/path');
+    AnalysisOptions options = builder.getAnalysisOptions(projPath);
     // TODO(danrubel) fix on Windows
     if (resourceProvider.absolutePathContext.separator != r'\') {
       _expectEqualOptions(options, expected);
+    } else {
+      // echo some debugging information
+      print('>>> projPath: $projPath');
+      print('>>>   ${builderOptions.defaultAnalysisOptionsFilePath}');
+      print('>>> getOptionsFile: ${builder.getOptionsFile(projPath)}');
+      fail('>>>>>>> Fail to echo test output on bots <<<<<<<');
     }
   }