Enforce and mark for unawaited_futures

pkgs/stream_transform/analysis_options.yaml

diff --git a/pkgs/stream_transform/analysis_options.yaml b/pkgs/stream_transform/analysis_options.yaml
index 9d680af..ecc45a6 100644
--- a/pkgs/stream_transform/analysis_options.yaml
+++ b/pkgs/stream_transform/analysis_options.yaml
@@ -75,7 +75,7 @@
     - test_types_in_equals
     - throw_in_finally
     - type_init_formals
-    #- unawaited_futures
+    - unawaited_futures
     - unnecessary_brace_in_string_interps
     - unnecessary_const
     - unnecessary_getters_setters

pkgs/stream_transform/test/scan_test.dart

diff --git a/pkgs/stream_transform/test/scan_test.dart b/pkgs/stream_transform/test/scan_test.dart
index 6c4f41a..7fe7bf9 100644
--- a/pkgs/stream_transform/test/scan_test.dart
+++ b/pkgs/stream_transform/test/scan_test.dart
@@ -4,6 +4,7 @@
 
 import 'dart:async';
 
+import 'package:pedantic/pedantic.dart';
 import 'package:test/test.dart';
 
 import 'package:stream_transform/stream_transform.dart';
@@ -75,7 +76,8 @@
 
         var results = <int>[];
 
-        source.stream.transform(scan(0, combine)).forEach(results.add);
+        unawaited(
+            source.stream.transform(scan(0, combine)).forEach(results.add));
 
         source..add(1)..add(2);
         await Future(() {});