I am trying to build with Linux hosted build server, but I am getting an error.
See the log:
/root/.nuget/packages/postsharp/5.1.9-preview/build/PostSharp.targets(154,5): error MSB4062: The "PostSharp.MSBuild.PostSharp30ValidateLanguageVersion" task could not be loaded from the assembly /root/.nuget/packages/postsharp/5.1.9-preview/build/PostSharp.MSBuild.v5.1.9.Release.dll. Could not load file or assembly 'Microsoft.Build.Utilities.v4.0, Version=4.0.0.0, Culture=neutral, PublicKeyToken=b03f5f7f11d50a3a'. The system cannot find the file specified.