Node.js 16 actions are deprecated. Please update the following actions to use Node.js 20: actions/checkout@v2, actions/setup-dotnet@v1. For more information see: https://github.blog/changelog/2023-09-22-github-actions-transitioning-from-node-16-to-node-20/.

The following actions uses node12 which is deprecated and will be forced to run on node16: actions/checkout@v2, actions/setup-dotnet@v1. For more info: https://github.blog/changelog/2023-06-13-github-actions-all-actions-will-run-on-node16-instead-of-node12-by-default/

/home/runner/work/AngleSharp.Css/AngleSharp.Css/src/AngleSharp.Performance.Css/AngleSharp.Performance.Css.csproj : warning NU1701: Package 'Alba.CsCss 1.0.1' was restored using '.NETFramework,Version=v4.6.1, .NETFramework,Version=v4.6.2, .NETFramework,Version=v4.7, .NETFramework,Version=v4.7.1, .NETFramework,Version=v4.7.2, .NETFramework,Version=v4.8, .NETFramework,Version=v4.8.1' instead of the project target framework 'net6.0'. This package may not be fully compatible with your project. [/home/runner/work/AngleSharp.Css/AngleSharp.Css/src/AngleSharp.Css.sln]

/home/runner/work/AngleSharp.Css/AngleSharp.Css/src/AngleSharp.Performance.Css/AngleSharp.Performance.Css.csproj : warning NU1701: Package 'ExCSS 2.0.6' was restored using '.NETFramework,Version=v4.6.1, .NETFramework,Version=v4.6.2, .NETFramework,Version=v4.7, .NETFramework,Version=v4.7.1, .NETFramework,Version=v4.7.2, .NETFramework,Version=v4.8, .NETFramework,Version=v4.8.1' instead of the project target framework 'net6.0'. This package may not be fully compatible with your project. [/home/runner/work/AngleSharp.Css/AngleSharp.Css/src/AngleSharp.Css.sln]

/home/runner/work/AngleSharp.Css/AngleSharp.Css/src/AngleSharp.Css/Dom/ICssStyleRule.cs(34,52): warning CS8632: The annotation for nullable reference types should only be used in code within a '#nullable' annotations context. [/home/runner/work/AngleSharp.Css/AngleSharp.Css/src/AngleSharp.Css/AngleSharp.Css.csproj::TargetFramework=netstandard2.0]

/home/runner/work/AngleSharp.Css/AngleSharp.Css/src/AngleSharp.Css/Dom/Internal/Rules/CssStyleRule.cs(93,59): warning CS8632: The annotation for nullable reference types should only be used in code within a '#nullable' annotations context. [/home/runner/work/AngleSharp.Css/AngleSharp.Css/src/AngleSharp.Css/AngleSharp.Css.csproj::TargetFramework=netstandard2.0]

/home/runner/work/AngleSharp.Css/AngleSharp.Css/src/AngleSharp.Css/RenderTree/ElementRenderNode.cs(23,27): warning CS8632: The annotation for nullable reference types should only be used in code within a '#nullable' annotations context. [/home/runner/work/AngleSharp.Css/AngleSharp.Css/src/AngleSharp.Css/AngleSharp.Css.csproj::TargetFramework=netstandard2.0]

/home/runner/work/AngleSharp.Css/AngleSharp.Css/src/AngleSharp.Css/RenderTree/RenderTreeBuilder.cs(38,138): warning CS8632: The annotation for nullable reference types should only be used in code within a '#nullable' annotations context. [/home/runner/work/AngleSharp.Css/AngleSharp.Css/src/AngleSharp.Css/AngleSharp.Css.csproj::TargetFramework=netstandard2.0]

/home/runner/work/AngleSharp.Css/AngleSharp.Css/src/AngleSharp.Css/RenderTree/RenderTreeBuilder.cs(96,114): warning CS8632: The annotation for nullable reference types should only be used in code within a '#nullable' annotations context. [/home/runner/work/AngleSharp.Css/AngleSharp.Css/src/AngleSharp.Css/AngleSharp.Css.csproj::TargetFramework=netstandard2.0]

/home/runner/work/AngleSharp.Css/AngleSharp.Css/src/AngleSharp.Css/RenderTree/TextRenderNode.cs(18,27): warning CS8632: The annotation for nullable reference types should only be used in code within a '#nullable' annotations context. [/home/runner/work/AngleSharp.Css/AngleSharp.Css/src/AngleSharp.Css/AngleSharp.Css.csproj::TargetFramework=netstandard2.0]

/home/runner/work/AngleSharp.Css/AngleSharp.Css/src/AngleSharp.Performance.Css/AngleSharp.Performance.Css.csproj : warning NU1701: Package 'Alba.CsCss 1.0.1' was restored using '.NETFramework,Version=v4.6.1, .NETFramework,Version=v4.6.2, .NETFramework,Version=v4.7, .NETFramework,Version=v4.7.1, .NETFramework,Version=v4.7.2, .NETFramework,Version=v4.8, .NETFramework,Version=v4.8.1' instead of the project target framework 'net6.0'. This package may not be fully compatible with your project.