diff --git a/analysis_options.yaml b/analysis_options.yaml
index ae7e109c44..a1beef0bf1 100644
--- a/analysis_options.yaml
+++ b/analysis_options.yaml
@@ -132,6 +132,7 @@ linter:
     - no_duplicate_case_values
     - no_logic_in_create_state
     # - no_runtimeType_toString # ok in tests; we enable this only in packages/
+    - noop_primitive_operations
     - non_constant_identifier_names
     - null_check_on_nullable_type_parameter
     - null_closures
diff --git a/packages/flutter/lib/src/widgets/media_query.dart b/packages/flutter/lib/src/widgets/media_query.dart
index 3f6143c09f..ffbdf8f9cc 100644
--- a/packages/flutter/lib/src/widgets/media_query.dart
+++ b/packages/flutter/lib/src/widgets/media_query.dart
@@ -274,7 +274,7 @@ class MediaQueryData {
   ///         right: systemGestureInsets.right,
   ///       ),
   ///       child: Slider(
-  ///         value: _currentValue.toDouble(),
+  ///         value: _currentValue,
   ///         onChanged: (double newValue) {
   ///           setState(() {
   ///             _currentValue = newValue;
diff --git a/packages/flutter_tools/lib/src/windows/uwptool.dart b/packages/flutter_tools/lib/src/windows/uwptool.dart
index bf21c0821b..c0e0c22501 100644
--- a/packages/flutter_tools/lib/src/windows/uwptool.dart
+++ b/packages/flutter_tools/lib/src/windows/uwptool.dart
@@ -45,7 +45,7 @@ class UwpTool {
       return <String>[];
     }
     final List<String> packageFamilies = <String>[];
-    for (final String line in result.stdout.toString().split('\n')) {
+    for (final String line in result.stdout.split('\n')) {
       final String packageFamily = line.trim();
       if (packageFamily.isNotEmpty) {
         packageFamilies.add(packageFamily);
@@ -82,7 +82,7 @@ class UwpTool {
       return null;
     }
     // Read the process ID from stdout.
-    final int processId = int.tryParse(result.stdout.toString().trim());
+    final int processId = int.tryParse(result.stdout.trim());
     _logger.printTrace('Launched application $packageFamily with process ID $processId');
     return processId;
   }
diff --git a/packages/flutter_tools/lib/src/windows/windows_device.dart b/packages/flutter_tools/lib/src/windows/windows_device.dart
index 7ef22506ab..1c59732100 100644
--- a/packages/flutter_tools/lib/src/windows/windows_device.dart
+++ b/packages/flutter_tools/lib/src/windows/windows_device.dart
@@ -256,7 +256,7 @@ class WindowsUWPDevice extends Device {
     final List<String> dependencyUris = _getDependencyPaths(buildDirectory, 'x64')
         .map((String path) => Uri.file(path).toString())
         .toList();
-    return _uwptool.installApp(packageUri.toString(), dependencyUris);
+    return _uwptool.installApp(packageUri, dependencyUris);
   }
 
   @override
diff --git a/packages/flutter_tools/test/general.shard/android/gradle_errors_test.dart b/packages/flutter_tools/test/general.shard/android/gradle_errors_test.dart
index 5040ed1fc5..abb84cfcb0 100644
--- a/packages/flutter_tools/test/general.shard/android/gradle_errors_test.dart
+++ b/packages/flutter_tools/test/general.shard/android/gradle_errors_test.dart
@@ -681,7 +681,6 @@ assembleProfile
           '\n'
           "Note that your app won't be available to users running Android SDKs below 19.\n"
           'Alternatively, try to find a version of this plugin that supports these lower versions of the Android SDK.\n'
-          ''
         )
       );
     }, overrides: <Type, Generator>{
@@ -719,7 +718,6 @@ assembleProfile
           '    checkReleaseBuilds false\n'
           '  }\n'
           '}\n'
-          ''
         )
       );
     }, overrides: <Type, Generator>{
@@ -757,7 +755,6 @@ Execution failed for task ':app:generateDebugFeatureTransitiveDeps'.
           'To regenerate the lockfiles run: `./gradlew :generateLockfiles` in /android/build.gradle\n'
           'To remove dependency locking, remove the `dependencyLocking` from /android/build.gradle\n'
           '\n'
-          ''
         )
       );
     }, overrides: <Type, Generator>{