csc: InvalidOperationException from TaskLoggingHelper.FormatResourceString() during dotnet-build

Using dotnet-sdk v5.0.100-rc.1.20407.13, during the execution of dotnet build command, the Csc task from Roslyn/Microsoft.CSharp.Core.targets (file from this repo) fails with the following stack:

/root/.dotnet/sdk/5.0.100-rc.1.20407.13/Roslyn/Microsoft.CSharp.Core.targets(70,5): error MSB4018: The "Csc" task failed unexpectedly. [/tmp/cirrus-ci-build/hwapp/hwapp.csproj]
/root/.dotnet/sdk/5.0.100-rc.1.20407.13/Roslyn/Microsoft.CSharp.Core.targets(70,5): error MSB4018: System.InvalidOperationException: The "Csc" task has not registered its resources. In order to use the "TaskLoggingHelper.FormatResourceString()" method this task needs to register its resources either during construction, or via the "TaskResources" property. [/tmp/cirrus-ci-build/hwapp/hwapp.csproj]
/root/.dotnet/sdk/5.0.100-rc.1.20407.13/Roslyn/Microsoft.CSharp.Core.targets(70,5): error MSB4018:    at Microsoft.Build.Shared.ErrorUtilities.ThrowInvalidOperation(String resourceName, Object[] args) [/tmp/cirrus-ci-build/hwapp/hwapp.csproj]
/root/.dotnet/sdk/5.0.100-rc.1.20407.13/Roslyn/Microsoft.CSharp.Core.targets(70,5): error MSB4018:    at Microsoft.Build.Shared.ErrorUtilities.VerifyThrowInvalidOperation(Boolean condition, String resourceName, Object arg0) [/tmp/cirrus-ci-build/hwapp/hwapp.csproj]
/root/.dotnet/sdk/5.0.100-rc.1.20407.13/Roslyn/Microsoft.CSharp.Core.targets(70,5): error MSB4018:    at Microsoft.Build.Utilities.TaskLoggingHelper.FormatResourceString(String resourceName, Object[] args) [/tmp/cirrus-ci-build/hwapp/hwapp.csproj]
/root/.dotnet/sdk/5.0.100-rc.1.20407.13/Roslyn/Microsoft.CSharp.Core.targets(70,5): error MSB4018:    at Microsoft.Build.Utilities.TaskLoggingHelper.LogErrorWithCodeFromResources(String messageResourceName, Object[] messageArgs) [/tmp/cirrus-ci-build/hwapp/hwapp.csproj]
/root/.dotnet/sdk/5.0.100-rc.1.20407.13/Roslyn/Microsoft.CSharp.Core.targets(70,5): error MSB4018:    at Microsoft.CodeAnalysis.BuildTasks.ManagedCompiler.ExecuteTool(String pathToTool, String responseFileCommands, String commandLineCommands) [/tmp/cirrus-ci-build/hwapp/hwapp.csproj]
/root/.dotnet/sdk/5.0.100-rc.1.20407.13/Roslyn/Microsoft.CSharp.Core.targets(70,5): error MSB4018:    at Microsoft.Build.Utilities.ToolTask.Execute() [/tmp/cirrus-ci-build/hwapp/hwapp.csproj]
/root/.dotnet/sdk/5.0.100-rc.1.20407.13/Roslyn/Microsoft.CSharp.Core.targets(70,5): error MSB4018:    at Microsoft.Build.BackEnd.TaskExecutionHost.Microsoft.Build.BackEnd.ITaskExecutionHost.Execute() [/tmp/cirrus-ci-build/hwapp/hwapp.csproj]
/root/.dotnet/sdk/5.0.100-rc.1.20407.13/Roslyn/Microsoft.CSharp.Core.targets(70,5): error MSB4018:    at Microsoft.Build.BackEnd.TaskBuilder.ExecuteInstantiatedTask(ITaskExecutionHost taskExecutionHost, TaskLoggingContext taskLoggingContext, TaskHost taskHost, ItemBucket bucket, TaskExecutionMode howToExecuteTask) [/tmp/cirrus-ci-build/hwapp/hwapp.csproj]

The csc command looks like this: (click to expand)

/root/.dotnet/dotnet exec “/root/.dotnet/sdk/5.0.100-rc.1.20407.13/Roslyn/bincore/csc.dll” /noconfig /unsafe- /checked- /nowarn:1701,1702,1701,1702 /fullpaths /nostdlib+ /errorreport:prompt /warn:5 /define:TRACE;DEBUG;NET;NET5_0;NETCOREAPP;NETCOREAPP3_1 /highentropyva+ /reference:/root/.dotnet/packs/Microsoft.NETCore.App.Ref/5.0.0-rc.1.20404.16/ref/net5.0/Microsoft.CSharp.dll /reference:/root/.dotnet/packs/Microsoft.NETCore.App.Ref/5.0.0-rc.1.20404.16/ref/net5.0/Microsoft.VisualBasic.Core.dll /reference:/root/.dotnet/packs/Microsoft.NETCore.App.Ref/5.0.0-rc.1.20404.16/ref/net5.0/Microsoft.VisualBasic.dll /reference:/root/.dotnet/packs/Microsoft.NETCore.App.Ref/5.0.0-rc.1.20404.16/ref/net5.0/Microsoft.Win32.Primitives.dll /reference:/root/.dotnet/packs/Microsoft.NETCore.App.Ref/5.0.0-rc.1.20404.16/ref/net5.0/mscorlib.dll /reference:/root/.dotnet/packs/Microsoft.NETCore.App.Ref/5.0.0-rc.1.20404.16/ref/net5.0/netstandard.dll /reference:/root/.dotnet/packs/Microsoft.NETCore.App.Ref/5.0.0-rc.1.20404.16/ref/net5.0/System.AppContext.dll /reference:/root/.dotnet/packs/Microsoft.NETCore.App.Ref/5.0.0-rc.1.20404.16/ref/net5.0/System.Buffers.dll /reference:/root/.dotnet/packs/Microsoft.NETCore.App.Ref/5.0.0-rc.1.20404.16/ref/net5.0/System.Collections.Concurrent.dll /reference:/root/.dotnet/packs/Microsoft.NETCore.App.Ref/5.0.0-rc.1.20404.16/ref/net5.0/System.Collections.dll /reference:/root/.dotnet/packs/Microsoft.NETCore.App.Ref/5.0.0-rc.1.20404.16/ref/net5.0/System.Collections.Immutable.dll /reference:/root/.dotnet/packs/Microsoft.NETCore.App.Ref/5.0.0-rc.1.20404.16/ref/net5.0/System.Collections.NonGeneric.dll /reference:/root/.dotnet/packs/Microsoft.NETCore.App.Ref/5.0.0-rc.1.20404.16/ref/net5.0/System.Collections.Specialized.dll /reference:/root/.dotnet/packs/Microsoft.NETCore.App.Ref/5.0.0-rc.1.20404.16/ref/net5.0/System.ComponentModel.Annotations.dll 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/reference:/root/.dotnet/packs/Microsoft.NETCore.App.Ref/5.0.0-rc.1.20404.16/ref/net5.0/System.Text.Encoding.dll /reference:/root/.dotnet/packs/Microsoft.NETCore.App.Ref/5.0.0-rc.1.20404.16/ref/net5.0/System.Text.Encoding.Extensions.dll /reference:/root/.dotnet/packs/Microsoft.NETCore.App.Ref/5.0.0-rc.1.20404.16/ref/net5.0/System.Text.Encodings.Web.dll /reference:/root/.dotnet/packs/Microsoft.NETCore.App.Ref/5.0.0-rc.1.20404.16/ref/net5.0/System.Text.Json.dll /reference:/root/.dotnet/packs/Microsoft.NETCore.App.Ref/5.0.0-rc.1.20404.16/ref/net5.0/System.Text.RegularExpressions.dll /reference:/root/.dotnet/packs/Microsoft.NETCore.App.Ref/5.0.0-rc.1.20404.16/ref/net5.0/System.Threading.Channels.dll /reference:/root/.dotnet/packs/Microsoft.NETCore.App.Ref/5.0.0-rc.1.20404.16/ref/net5.0/System.Threading.dll /reference:/root/.dotnet/packs/Microsoft.NETCore.App.Ref/5.0.0-rc.1.20404.16/ref/net5.0/System.Threading.Overlapped.dll /reference:/root/.dotnet/packs/Microsoft.NETCore.App.Ref/5.0.0-rc.1.20404.16/ref/net5.0/System.Threading.Tasks.Dataflow.dll /reference:/root/.dotnet/packs/Microsoft.NETCore.App.Ref/5.0.0-rc.1.20404.16/ref/net5.0/System.Threading.Tasks.dll /reference:/root/.dotnet/packs/Microsoft.NETCore.App.Ref/5.0.0-rc.1.20404.16/ref/net5.0/System.Threading.Tasks.Extensions.dll /reference:/root/.dotnet/packs/Microsoft.NETCore.App.Ref/5.0.0-rc.1.20404.16/ref/net5.0/System.Threading.Tasks.Parallel.dll /reference:/root/.dotnet/packs/Microsoft.NETCore.App.Ref/5.0.0-rc.1.20404.16/ref/net5.0/System.Threading.Thread.dll /reference:/root/.dotnet/packs/Microsoft.NETCore.App.Ref/5.0.0-rc.1.20404.16/ref/net5.0/System.Threading.ThreadPool.dll /reference:/root/.dotnet/packs/Microsoft.NETCore.App.Ref/5.0.0-rc.1.20404.16/ref/net5.0/System.Threading.Timer.dll /reference:/root/.dotnet/packs/Microsoft.NETCore.App.Ref/5.0.0-rc.1.20404.16/ref/net5.0/System.Transactions.dll /reference:/root/.dotnet/packs/Microsoft.NETCore.App.Ref/5.0.0-rc.1.20404.16/ref/net5.0/System.Transactions.Local.dll /reference:/root/.dotnet/packs/Microsoft.NETCore.App.Ref/5.0.0-rc.1.20404.16/ref/net5.0/System.ValueTuple.dll /reference:/root/.dotnet/packs/Microsoft.NETCore.App.Ref/5.0.0-rc.1.20404.16/ref/net5.0/System.Web.dll /reference:/root/.dotnet/packs/Microsoft.NETCore.App.Ref/5.0.0-rc.1.20404.16/ref/net5.0/System.Web.HttpUtility.dll /reference:/root/.dotnet/packs/Microsoft.NETCore.App.Ref/5.0.0-rc.1.20404.16/ref/net5.0/System.Windows.dll /reference:/root/.dotnet/packs/Microsoft.NETCore.App.Ref/5.0.0-rc.1.20404.16/ref/net5.0/System.Xml.dll /reference:/root/.dotnet/packs/Microsoft.NETCore.App.Ref/5.0.0-rc.1.20404.16/ref/net5.0/System.Xml.Linq.dll /reference:/root/.dotnet/packs/Microsoft.NETCore.App.Ref/5.0.0-rc.1.20404.16/ref/net5.0/System.Xml.ReaderWriter.dll /reference:/root/.dotnet/packs/Microsoft.NETCore.App.Ref/5.0.0-rc.1.20404.16/ref/net5.0/System.Xml.Serialization.dll /reference:/root/.dotnet/packs/Microsoft.NETCore.App.Ref/5.0.0-rc.1.20404.16/ref/net5.0/System.Xml.XDocument.dll /reference:/root/.dotnet/packs/Microsoft.NETCore.App.Ref/5.0.0-rc.1.20404.16/ref/net5.0/System.Xml.XmlDocument.dll /reference:/root/.dotnet/packs/Microsoft.NETCore.App.Ref/5.0.0-rc.1.20404.16/ref/net5.0/System.Xml.XmlSerializer.dll /reference:/root/.dotnet/packs/Microsoft.NETCore.App.Ref/5.0.0-rc.1.20404.16/ref/net5.0/System.Xml.XPath.dll /reference:/root/.dotnet/packs/Microsoft.NETCore.App.Ref/5.0.0-rc.1.20404.16/ref/net5.0/System.Xml.XPath.XDocument.dll /reference:/root/.dotnet/packs/Microsoft.NETCore.App.Ref/5.0.0-rc.1.20404.16/ref/net5.0/WindowsBase.dll /debug+ /debug:portable /filealign:512 /optimize- /out:obj/Debug/net5.0/hwapp.dll /refout:obj/Debug/net5.0/ref/hwapp.dll /target:exe /warnaserror- /utf8output /deterministic+ /langversion:9.0 /analyzerconfig:obj/Debug/net5.0/hwapp.GeneratedMSBuildEditorConfig.editorconfig /analyzer:/root/.dotnet/sdk/5.0.100-rc.1.20407.13/Sdks/Microsoft.NET.Sdk/targets/…/analyzers/Microsoft.CodeAnalysis.CSharp.NetAnalyzers.dll /analyzer:/root/.dotnet/sdk/5.0.100-rc.1.20407.13/Sdks/Microsoft.NET.Sdk/targets/…/analyzers/Microsoft.CodeAnalysis.NetAnalyzers.dll Program.cs “obj/Debug/net5.0/.NETCoreApp,Version=v5.0.AssemblyAttributes.cs” obj/Debug/net5.0/hwapp.AssemblyInfo.cs /warnaserror+:NU1605

dotnet-build /v:diag logs: https://api.cirrus-ci.com/v1/task/5495860022738944/logs/emulate dotnet.log.

[daniels7]

We get the same error on a Mac Mini BuildHost with Big Sur and the newest dotnet 5 sdk

If the build is restarted several times it mostly finishes successfully then

[lostmsu]

The issue appears to be solved by replacing a reference to Microsoft.Net.Compilers with a reference to Microsoft.Net.Compilers.Toolset.