.NET Core SDK 3.1.200 breaks build which is using GitVersionTask

Using GitVersionTask 5.1.2 with CoreWCF builds successfully with .NET Core SDK 3.1.101, but when the SDK was updated by a recent VS update, it broke the build. I have also tried GitVersion 5.1.3 and the latest 5.2.3 with the same result. Reinstalling .NET Core SDK 3.1.101 (as VS updater removes it) and adding a global.json file to specify using that version of the SDK results in the build succeeding again. Here is the error message I get from the build:

 error MSB4018: The "WriteVersionInfoToBuildLog" task failed unexpectedly. [C:\git\CoreWCF\src\CoreWCF.Primitives\src\CoreWCF.Primitives.csproj]
 error MSB4018: System.TypeInitializationException: The type initializer for 'GitVersion.MSBuildTask.TaskProxy' threw an exception. [C:\git\CoreWCF\src\CoreWCF.Primitives\src\CoreWCF.Primitives.csproj]
 error MSB4018:  ---> System.IO.FileNotFoundException: Could not load file or assembly 'GitVersionTask.MsBuild, Version=5.1.3.0, Culture=neutral, PublicKeyToken=null'. The system cannot find the file specified. [C:\git\CoreWCF\src\CoreWCF.Primitives\src\CoreWCF.Primitives.csproj]
 error MSB4018: File name: 'GitVersionTask.MsBuild, Version=5.1.3.0, Culture=neutral, PublicKeyToken=null' [C:\git\CoreWCF\src\CoreWCF.Primitives\src\CoreWCF.Primitives.csproj]
 error MSB4018:  ---> System.IO.FileNotFoundException: Could not load file or assembly 'GitVersionTask.MsBuild, Version=5.1.3.0, Culture=neutral, PublicKeyToken=null'. The system cannot find the file specified. [C:\git\CoreWCF\src\CoreWCF.Primitives\src\CoreWCF.Primitives.csproj]
 error MSB4018: File name: 'GitVersionTask.MsBuild, Version=5.1.3.0, Culture=neutral, PublicKeyToken=null' [C:\git\CoreWCF\src\CoreWCF.Primitives\src\CoreWCF.Primitives.csproj]
 error MSB4018:    at System.Reflection.RuntimeAssembly.nLoad(AssemblyName fileName, String codeBase, RuntimeAssembly assemblyContext, StackCrawlMark& stackMark, Boolean throwOnFileNotFound, AssemblyLoadContext assemblyLoadContext) [C:\git\CoreWCF\src\CoreWCF.Primitives\src\CoreWCF.Primitives.csproj]
 error MSB4018:    at System.Reflection.RuntimeAssembly.InternalLoadAssemblyName(AssemblyName assemblyRef, StackCrawlMark& stackMark, AssemblyLoadContext assemblyLoadContext) [C:\git\CoreWCF\src\CoreWCF.Primitives\src\CoreWCF.Primitives.csproj]
 error MSB4018:    at System.Reflection.Assembly.Load(AssemblyName assemblyRef, StackCrawlMark& stackMark, AssemblyLoadContext assemblyLoadContext) [C:\git\CoreWCF\src\CoreWCF.Primitives\src\CoreWCF.Primitives.csproj]
 error MSB4018:    at System.Runtime.Loader.AssemblyLoadContext.LoadFromAssemblyName(AssemblyName assemblyName) [C:\git\CoreWCF\src\CoreWCF.Primitives\src\CoreWCF.Primitives.csproj]
 error MSB4018:    at GitVersion.MSBuildTask.LibGit2Sharp.GitLoaderContext.Load(AssemblyName assemblyName) in D:\a\1\s\src\GitVersionTask.MsBuild\LibGit2Sharp\GitLoaderContext.cs:line 30 [C:\git\CoreWCF\src\CoreWCF.Primitives\src\CoreWCF.Primitives.csproj]
 error MSB4018:    at System.Runtime.Loader.AssemblyLoadContext.ResolveUsingLoad(AssemblyName assemblyName) [C:\git\CoreWCF\src\CoreWCF.Primitives\src\CoreWCF.Primitives.csproj]
 error MSB4018:    at System.Runtime.Loader.AssemblyLoadContext.Resolve(IntPtr gchManagedAssemblyLoadContext, AssemblyName assemblyName) [C:\git\CoreWCF\src\CoreWCF.Primitives\src\CoreWCF.Primitives.csproj]
 error MSB4018:  [C:\git\CoreWCF\src\CoreWCF.Primitives\src\CoreWCF.Primitives.csproj]
 error MSB4018:  [C:\git\CoreWCF\src\CoreWCF.Primitives\src\CoreWCF.Primitives.csproj]
 error MSB4018:    at System.Reflection.RuntimeAssembly.GetType(QCallAssembly assembly, String name, Boolean throwOnError, Boolean ignoreCase, ObjectHandleOnStack type, ObjectHandleOnStack keepAlive, ObjectHandleOnStack assemblyLoadContext) [C:\git\CoreWCF\src\CoreWCF.Primitives\src\CoreWCF.Primitives.csproj]
 error MSB4018:    at System.Reflection.RuntimeAssembly.GetType(String name, Boolean throwOnError, Boolean ignoreCase) [C:\git\CoreWCF\src\CoreWCF.Primitives\src\CoreWCF.Primitives.csproj]
 error MSB4018:    at System.Reflection.Assembly.GetType(String name, Boolean throwOnError) [C:\git\CoreWCF\src\CoreWCF.Primitives\src\CoreWCF.Primitives.csproj]
 error MSB4018:    at GitVersion.MSBuildTask.TaskProxy..cctor() in D:\a\1\s\src\GitVersionTask.MsBuild\TaskProxy.cs:line 22 [C:\git\CoreWCF\src\CoreWCF.Primitives\src\CoreWCF.Primitives.csproj]
 error MSB4018:  [C:\git\CoreWCF\src\CoreWCF.Primitives\src\CoreWCF.Primitives.csproj]
 error MSB4018:  [C:\git\CoreWCF\src\CoreWCF.Primitives\src\CoreWCF.Primitives.csproj]
 error MSB4018:    --- End of inner exception stack trace --- [C:\git\CoreWCF\src\CoreWCF.Primitives\src\CoreWCF.Primitives.csproj]
 error MSB4018:    at GitVersion.MSBuildTask.Tasks.WriteVersionInfoToBuildLog.Execute() in D:\a\1\s\src\GitVersionTask.MsBuild\Tasks\WriteVersionInfoToBuildLog.cs:line 5 [C:\git\CoreWCF\src\CoreWCF.Primitives\src\CoreWCF.Primitives.csproj]
 error MSB4018:    at Microsoft.Build.BackEnd.TaskExecutionHost.Microsoft.Build.BackEnd.ITaskExecutionHost.Execute() [C:\git\CoreWCF\src\CoreWCF.Primitives\src\CoreWCF.Primitives.csproj]
 error MSB4018:    at Microsoft.Build.BackEnd.TaskBuilder.ExecuteInstantiatedTask(ITaskExecutionHost taskExecutionHost, TaskLoggingContext taskLoggingContext, TaskHost taskHost, ItemBucket bucket, TaskExecutionMode howToExecuteTask) [C:\git\CoreWCF\src\CoreWCF.Primitives\src\CoreWCF.Primitives.csproj]

[dasMulli]

Can you try a dotnet build-server shutdown before the run with changed ENV var to make sure there are no leftover msbuild nodes?

[rainersigwald]

@onyxmaster Thanks! This appears to have been fixed in Fody 6.0.4, probably by https://github.com/Fody/Fody/commit/7f4f425692b23fb5520312418d5642566ccc7577. I was able to get your repro working by forcing an updated ref:

diff --git a/Independent.csproj b/Independent.csproj
index c915944..294ba7b 100644
--- a/Independent.csproj
+++ b/Independent.csproj
@@ -5,5 +5,6 @@
 
   <ItemGroup>
     <PackageReference Include="ModuleInit.Fody" Version="2.1.0" PrivateAssets="all"/>
+    <PackageReference Include="Fody" Version="6.0.4" PrivateAssets="all"/>
   </ItemGroup>
 </Project>

FYI @simoncropp.