Error when install dotnet-etcd v3.0.0-alpha

[spiderpoison]

I used nuget install dotnet-etcd v3.0.0-alpha, error like below,

Restoring packages for /Users/zhangzhen/serverthreekingdom/src/vcs.taiyouxi.net/jws2/battlecheck/battlecheck/battlecheck.csproj...
NU1605: Detected package downgrade: Google.Protobuf from 3.9.1 to 3.9.0-rc1. Reference the package directly from the project to select a different version. 
 battlecheck -> dotnet-etcd 3.0.0-alpha -> Google.Protobuf (>= 3.9.1) 
 battlecheck -> Google.Protobuf (>= 3.9.0-rc1)
Package restore failed. Rolling back package changes for 'battlecheck'.
NuGet.PackageManagement.PackageReferenceRollbackException: Package restore failed. Rolling back package changes for 'battlecheck'.
  at NuGet.PackageManagement.NuGetPackageManager.ExecuteBuildIntegratedProjectActionsAsync (NuGet.ProjectManagement.Projects.BuildIntegratedNuGetProject buildIntegratedProject, System.Collections.Generic.IEnumerable`1[T] nuGetProjectActions, NuGet.ProjectManagement.INuGetProjectContext nuGetProjectContext, System.Threading.CancellationToken token) [0x00c45] in <7a2d2afbbb674cd48052281699c39e01>:0 
  at NuGet.PackageManagement.NuGetPackageManager.ExecuteNuGetProjectActionsAsync (NuGet.ProjectManagement.NuGetProject nuGetProject, System.Collections.Generic.IEnumerable`1[T] nuGetProjectActions, NuGet.ProjectManagement.INuGetProjectContext nuGetProjectContext, NuGet.Protocol.Core.Types.PackageDownloadContext downloadContext, System.Threading.CancellationToken token) [0x00121] in <7a2d2afbbb674cd48052281699c39e01>:0 
  at NuGet.PackageManagement.NuGetPackageManager.InstallPackageAsync (NuGet.ProjectManagement.NuGetProject nuGetProject, NuGet.Packaging.Core.PackageIdentity packageIdentity, NuGet.PackageManagement.ResolutionContext resolutionContext, NuGet.ProjectManagement.INuGetProjectContext nuGetProjectContext, NuGet.Protocol.Core.Types.PackageDownloadContext downloadContext, System.Collections.Generic.IEnumerable`1[T] primarySources, System.Collections.Generic.IEnumerable`1[T] secondarySources, System.Threading.CancellationToken token) [0x00121] in <7a2d2afbbb674cd48052281699c39e01>:0 
  at NuGet.PackageManagement.NuGetPackageManager.InstallPackageAsync (NuGet.ProjectManagement.NuGetProject nuGetProject, NuGet.Packaging.Core.PackageIdentity packageIdentity, NuGet.PackageManagement.ResolutionContext resolutionContext, NuGet.ProjectManagement.INuGetProjectContext nuGetProjectContext, System.Collections.Generic.IEnumerable`1[T] primarySources, System.Collections.Generic.IEnumerable`1[T] secondarySources, System.Threading.CancellationToken token) [0x000d3] in <7a2d2afbbb674cd48052281699c39e01>:0 
  at JetBrains.ProjectModel.NuGet.Operations.NuGetInstallOperation+<>c__DisplayClass2_0.<InstallAsync>b__0 (NuGet.ProjectManagement.NuGetProject nuGetProject, System.Threading.CancellationToken token) [0x000a5] in <4f50b4f4bae54c32bce2af009baac90a>:0 
  at JetBrains.ProjectModel.NuGet.Operations.NuGetInstallOperation.InstallInternal (JetBrains.ProjectModel.IProject project, System.String packageId, System.String packgeUserStr, JetBrains.ProjectModel.NuGet.Configs.NuGetFeedContext feedContext, System.Int32 nestedLevel, JetBrains.ProjectModel.NuGet.Logging.NuGetNotificationMode mode, JetBrains.ProjectModel.NuGet.Operations.NuGetOperationReporter reporter, System.Func`3[T1,T2,TResult] nativeInstall) [0x003e6] in <4f50b4f4bae54c32bce2af009baac90a>:0 

@ Installing dotnet-etcd in battlecheck finished (4.852 sec)
[Notification][Install] Install failed (project: battlecheck, package: dotnet-etcd v3.0.0-alpha)
Package restore failed. Rolling back package changes for 'battlecheck'.

[shubhamranjan]

Hi, Please try to remove any references of Google.Protobuf from your project. It seems that your project already has a reference of 3.9.0-rc1 whereas dotnet-etcd has a reference of 3.9.1. Either update the reference to the same version or remove it. That should solve it.

[shubhamranjan]

Closing as no response.