发现无法解决的“System.Runtime.CompilerServices.Unsafe”不同版本之间的冲突

Question

这似乎是许多类似问题之一，但我在其他问题中找不到解决方案。

我将直接跳转到二进制日志：

这是ResolveAssemblyReference任务下的相应子树：

There was a conflict between "System.Runtime.CompilerServices.Unsafe, Version=4.0.4.1, Culture=neutral, PublicKeyToken=b03f5f7f11d50a3a" and "System.Runtime.CompilerServices.Unsafe, Version=4.0.6.0, Culture=neutral, PublicKeyToken=b03f5f7f11d50a3a".
    "System.Runtime.CompilerServices.Unsafe, Version = 4.0.4.1, Culture=neutral, PublicKeyToken=b03f5f7f11d50a3a" was chosen because it was primary and "System.Runtime.CompilerServices.Unsafe, Version=4.0.6.0, Culture=neutral, PublicKeyToken=b03f5f7f11d50a3a" was not.
    References which depend on "System.Runtime.CompilerServices.Unsafe, Version = 4.0.4.1, Culture=neutral, PublicKeyToken=b03f5f7f11d50a3a" [C:\Users\mkharitonov\.nuget\packages\system.runtime.compilerservices.unsafe\4.5.2\ref\netstandard2.0\System.Runtime.CompilerServices.Unsafe.dll].
    C:\Users\mkharitonov\.nuget\packages\system.runtime.compilerservices.unsafe\4.5.2\ref\netstandard2.0\System.Runtime.CompilerServices.Unsafe.dll
          Project file item includes which caused reference "C:\Users\mkharitonov\.nuget\packages\system.runtime.compilerservices.unsafe\4.5.2\ref\netstandard2.0\System.Runtime.CompilerServices.Unsafe.dll".
            C:\Users\mkharitonov\.nuget\packages\system.runtime.compilerservices.unsafe\4.5.2\ref\netstandard2.0\System.Runtime.CompilerServices.Unsafe.dll
        C:\Users\mkharitonov\.nuget\packages\microsoft.extensions.primitives\2.0.0\lib\netstandard2.0\Microsoft.Extensions.Primitives.dll
          Project file item includes which caused reference "C:\Users\mkharitonov\.nuget\packages\microsoft.extensions.primitives\2.0.0\lib\netstandard2.0\Microsoft.Extensions.Primitives.dll".
            C:\Users\mkharitonov\.nuget\packages\microsoft.extensions.primitives\2.0.0\lib\netstandard2.0\Microsoft.Extensions.Primitives.dll
            C:\Users\mkharitonov\.nuget\packages\microsoft.extensions.caching.abstractions\2.0.0\lib\netstandard2.0\Microsoft.Extensions.Caching.Abstractions.dll
            xyz.Common
            C:\xyz\tip\bin.link\xyz.Web.Framework.dll
            C:\xyz\tip\bin.link\xyz.Web.Platform.dll
            AccrualEngine
            DataProcessor
            xyz.BusinessAPI.Core
            xyz.DataManager
            DataSvc
            xyz.Data
            xyz.HtmlPlatform
            xyz.BusinessAPI
            DeviceServices
            GrossPayEngineDataProvider
            MultiApprovalProcessor
            Payroll.Core.Data
            PunchStatusReconciliationEngine
            RateEngine2
            RateEngineDataProviderServer
            RuleEngine
            RuleEngineDataProvider
            RuleEngineHelper
            SharpTop.Common.Security.MemberSession
            SharpTop.DB.DL
            WorkTimeCalculationEngine
            C:\Users\mkharitonov\.nuget\packages\microsoft.extensions.caching.memory\2.0.0\lib\netstandard2.0\Microsoft.Extensions.Caching.Memory.dll
            C:\Users\mkharitonov\.nuget\packages\microsoft.extensions.options\2.0.0\lib\netstandard2.0\Microsoft.Extensions.Options.dll
        C:\Users\mkharitonov\.nuget\packages\system.memory\4.5.3\lib\netstandard2.0\System.Memory.dll
          Project file item includes which caused reference "C:\Users\mkharitonov\.nuget\packages\system.memory\4.5.3\lib\netstandard2.0\System.Memory.dll".
            C:\Users\mkharitonov\.nuget\packages\system.memory\4.5.3\lib\netstandard2.0\System.Memory.dll
            C:\Users\mkharitonov\.nuget\packages\system.diagnostics.diagnosticsource\4.6.0\lib\net46\System.Diagnostics.DiagnosticSource.dll
            C:\Users\mkharitonov\.nuget\packages\microsoft.applicationinsights\2.10.0\lib\net46\Microsoft.ApplicationInsights.dll
            C:\Users\mkharitonov\.nuget\packages\xyz.engine.core.common\1.0.20260.1\lib\netstandard2.0\xyz.Engine.Core.Common.dll
            xyz.Common
            C:\xyz\tip\bin.link\xyz.Web.Framework.dll
            C:\xyz\tip\bin.link\xyz.Web.Platform.dll
            AccrualEngine
            DataProcessor
            xyz.BusinessAPI.Core
            xyz.DataManager
            DataSvc
            xyz.Data
            xyz.HtmlPlatform
            xyz.BusinessAPI
            DeviceServices
            GrossPayEngineDataProvider
            MultiApprovalProcessor
            Payroll.Core.Data
            PunchStatusReconciliationEngine
            RateEngine2
            RateEngineDataProviderServer
            RuleEngine
            RuleEngineDataProvider
            RuleEngineHelper
            SharpTop.Common.Security.MemberSession
            SharpTop.DB.DL
            WorkTimeCalculationEngine
        C:\xyz\tip\Tools\MSBuild\..\..\bin.link\System.Threading.Tasks.Extensions.dll
          Project file item includes which caused reference "C:\xyz\tip\Tools\MSBuild\..\..\bin.link\System.Threading.Tasks.Extensions.dll".
            GrossPayEngineDataProvider
        C:\xyz\tip\Tools\MSBuild\..\..\bin.link\Pipelines.Sockets.Unofficial.dll
          Project file item includes which caused reference "C:\xyz\tip\Tools\MSBuild\..\..\bin.link\Pipelines.Sockets.Unofficial.dll".
            GrossPayEngineDataProvider
    References which depend on "System.Runtime.CompilerServices.Unsafe, Version = 4.0.6.0, Culture=neutral, PublicKeyToken=b03f5f7f11d50a3a" [C:\Program Files (x86)\Microsoft Visual Studio\2019\Enterprise\MSBuild\Current\Bin\System.Runtime.CompilerServices.Unsafe.dll].

从中我得出结论，有两个版本的System.Runtime.CompilerServices.Unsafe.dll游戏：

1. NuGet 包 - C:\Users\mkharitonov.nuget\packages\system.runtime.compilerservices.unsafe\4.5.2\ref\netstandard2.0\System.Runtime.CompilerServices.Unsafe.dll
2. C:\Program Files (x86)\Microsoft Visual Studio\2019\Enterprise\MSBuild\Current\Bin\System.Runtime.CompilerServices.Unsafe.dll

二进制日志非常详细地显示了哪些程序集依赖于 NuGet 包，但它没有显示第二个参考。这很奇怪，因为问题是 - 为什么首先考虑第二个版本？

有问题的项目只是一个库，因此没有 app.config 文件。另外，AutoUnify == true所以ResolveAssemblyReference任务应该自动解决冲突到最高版本，至少这是我对文档的解释。

所以，我很困惑。我知道警告很小，可以忽略，但我想了解它的性质。如果显然所有依赖项都依赖于 NuGet 包，这是什么原因造成的。或者，该任务可能不会输出某些类型的依赖项，而是由我来调查依赖于C:\Program Files (x86)\Microsoft Visual Studio\2019\Enterprise\MSBuild\Current\Bin\System.Runtime.CompilerServices 的内容.Unsafe.dll ?

作为记录：

1. NuGet包的汇编版本是4.0.4.1，第二版是4.0.6.0，所以不应该都解析到最高版本，即第二版吗？
2. 我的代码都没有直接引用 System.Runtime.CompilerServices.Unsafe，因此ResolveAssemblyReference任务列出的所有依赖项都必须是可传递的。
3. 我尝试使用绑定重定向将app.config文件添加到相关项目中，即使由于该AutoGenerateBindingRedirects属性的存在应该不需要这样做。正如我所料 - 它没有帮助。

我如何确定发生了什么以及如何解决它？

Answer 1

我有一个更新。在我们这边，app.config 中有一个条目重定向到 4.0.6.0。

我们从来没有见过这个问题，因为构建机器上没有4.0.6.0。

但是当我们将 Visual Studio 更新到最新版本时，msbuild 以某种方式复制了它。

_CopyFilesMarkedCopyLocal:
  The File will be copied from "C:\Program Files (x86)\Microsoft Visual Studio\2019\Enterprise\MSBuild\Current\Bin\System.Runtime.CompilerServices.Unsafe.dll" in "D:\agent_03\_work\21\s\Release\System.Runtime.CompilerServices.Unsafe.dll".

一旦我们删除了配置文件中的条目，该文件就不再被复制。

_CopyFilesMarkedCopyLocal:
  The File will be copied from "C:\Program Files (x86)\Microsoft Visual Studio\2019\Enterprise\MSBuild\Current\Bin\System.Runtime.CompilerServices.Unsafe.dll" in "D:\agent_03\_work\21\s\Release\System.Runtime.CompilerServices.Unsafe.dll".

在 app.configs 上搜索任何特定条目。如果找不到，恐怕您需要检查所有 nuget 依赖项，直到找到哪个需要此特定版本。

干杯，马可