Node.js 20 actions are deprecated. The following actions are running on Node.js 20 and may not work as expected: actions/cache@v3, actions/checkout@v4, actions/setup-dotnet@v4, GuillaumeFalourd/setup-windows10-sdk-action@v2, NuGet/login@v1. Actions will be forced to run with Node.js 24 by default starting June 2nd, 2026. Node.js 20 will be removed from the runner on September 16th, 2026. Please check if updated versions of these actions are available that support Node.js 24. To opt into Node.js 24 now, set the FORCE_JAVASCRIPT_ACTIONS_TO_NODE24=true environment variable on the runner or in your workflow file. Once Node.js 24 becomes the default, you can temporarily opt out by setting ACTIONS_ALLOW_USE_UNSECURE_NODE_VERSION=true. For more information see: https://github.blog/changelog/2025-09-19-deprecation-of-node-20-on-github-actions-runners/

D:\a\Material.Icons\Material.Icons\Material.Icons.WPF.Demo\StringJoinConverter.cs(13,38): warning CS8632: The annotation for nullable reference types should only be used in code within a '#nullable' annotations context. [D:\a\Material.Icons\Material.Icons\Material.Icons.WPF.Demo\Material.Icons.WPF.Demo_5zw3hgzo_wpftmp.csproj]

D:\a\Material.Icons\Material.Icons\Material.Icons.WPF.Demo\StringJoinConverter.cs(11,22): warning CS8632: The annotation for nullable reference types should only be used in code within a '#nullable' annotations context. [D:\a\Material.Icons\Material.Icons\Material.Icons.WPF.Demo\Material.Icons.WPF.Demo_5zw3hgzo_wpftmp.csproj]

D:\a\Material.Icons\Material.Icons\Material.Icons.Avalonia.Demo\Views/MainWindow.axaml(65,10,65,10): Avalonia warning AVLN5001: 'TextBox.Watermark' is obsolete: Use PlaceholderText instead. [D:\a\Material.Icons\Material.Icons\Material.Icons.Avalonia.Demo\Material.Icons.Avalonia.Demo.csproj]

D:\a\Material.Icons\Material.Icons\Material.Icons.Avalonia.Demo\ViewModels\MainWindowViewModel.cs(29,143): warning CS8602: Dereference of a possibly null reference. [D:\a\Material.Icons\Material.Icons\Material.Icons.Avalonia.Demo\Material.Icons.Avalonia.Demo.csproj]

D:\a\Material.Icons\Material.Icons\Material.Icons.Avalonia.Demo\ViewModels\MainWindowViewModel.cs(28,72): warning CS8622: Nullability of reference types in type of parameter 'text' of 'void MainWindowViewModel.DoSearch(string text)' doesn't match the target delegate 'Action<string?>' (possibly because of nullability attributes). [D:\a\Material.Icons\Material.Icons\Material.Icons.Avalonia.Demo\Material.Icons.Avalonia.Demo.csproj]

D:\a\Material.Icons\Material.Icons\Material.Icons.Avalonia.Demo\ViewLocator.cs(17,24): warning CS8767: Nullability of reference types in type of parameter 'data' of 'Control ViewLocator.Build(object data)' doesn't match implicitly implemented member 'Control? ITemplate<object?, Control?>.Build(object? param)' (possibly because of nullability attributes). [D:\a\Material.Icons\Material.Icons\Material.Icons.Avalonia.Demo\Material.Icons.Avalonia.Demo.csproj]

D:\a\Material.Icons\Material.Icons\Material.Icons.Avalonia.Demo\ViewLocator.cs(29,21): warning CS8767: Nullability of reference types in type of parameter 'data' of 'bool ViewLocator.Match(object data)' doesn't match implicitly implemented member 'bool IDataTemplate.Match(object? data)' (possibly because of nullability attributes). [D:\a\Material.Icons\Material.Icons\Material.Icons.Avalonia.Demo\Material.Icons.Avalonia.Demo.csproj]

D:\a\Material.Icons\Material.Icons\Material.Icons\MaterialIconDataProvider.PathData.cs(14,21): warning CS8524: The switch expression does not handle some values of its input type (it is not exhaustive) involving an unnamed enum value. For example, the pattern '(Material.Icons.MaterialIconKind)7461' is not covered. [D:\a\Material.Icons\Material.Icons\Material.Icons\Material.Icons.csproj]

C:\Program Files\dotnet\sdk\10.0.201\Sdks\Microsoft.NET.Sdk\targets\Microsoft.NET.EolTargetFrameworks.targets(32,5): warning NETSDK1138: The target framework 'netcoreapp3.1' is out of support and will not receive security updates in the future. Please refer to https://aka.ms/dotnet-core-support for more information about the support policy. [D:\a\Material.Icons\Material.Icons\Material.Icons.WPF.Demo\Material.Icons.WPF.Demo.csproj]