这些ASP.NET Core依赖性警告的来源是什么？

我无法确定这个问题的根本原因.

图案：

Dependency Conflict. [project name] [project version] expected [dependency name] >= [registered version] but received [lower version]

Dependency specified was [dependency name] >= [registered version] but ended up with [dependency name] [lower version]

示例：我对依赖项Microsoft.Extensions.Logging v1.1.1发出此警告：

Dependency Conflict. Statistics 1.0.0 expected Microsoft.Extensions.Logging >= 1.1.1 but received 1.1.0

Dependency specified was Microsoft.Extensions.Logging >= 1.1.1 but ended up with Microsoft.Extensions.Logging 1.1.0

值得注意的是,在运行Update-Packages cmdlet之前,project.json文件确实引用了Microsoft.Extensions.Logging的v1.1.0.

更新后的project.json文件：

{
  "buildOptions": {
    "emitEntryPoint": true,"preserveCompilationContext": true,"xmlDoc": true,"nowarn": [ "CS1591" ]
  },"dependencies": {
    "BusinessEntities": "1.0.0-*","IdentityServer4.AccessTokenValidation": "1.1.0","Ioc": "1.0.0-*","Microsoft.AspNet.WebApi.Client": "5.2.3","Microsoft.AspNetCore.Diagnostics": "1.1.1","Microsoft.AspNetCore.Diagnostics.EntityFrameworkCore": "1.1.1","Microsoft.AspNetCore.Mvc": "1.1.2","Microsoft.AspNetCore.Routing": "1.1.1","Microsoft.AspNetCore.Server.IISIntegration": "1.1.1","Microsoft.AspNetCore.Server.Kestrel": "1.1.1","Microsoft.AspNetCore.Server.Kestrel.Https": "1.1.1","Microsoft.Extensions.Configuration.CommandLine": "1.1.1","Microsoft.Extensions.Configuration.EnvironmentVariables": "1.1.1","Microsoft.Extensions.Configuration.FileExtensions": "1.1.1","Microsoft.Extensions.Configuration.Json": "1.1.1","Microsoft.Extensions.Logging": "1.1.1","Microsoft.Extensions.Logging.Console": "1.1.1","Microsoft.Extensions.Logging.Debug": "1.1.1","Microsoft.Extensions.Options.ConfigurationExtensions": "1.1.1","Microsoft.VisualStudio.Web.BrowserLink.Loader": "14.1.0","Swashbuckle.AspNetCore": "1.0.0-rc1","Swashbuckle.AspNetCore.Swagger": "1.0.0-rc1","Swashbuckle.AspNetCore.SwaggerGen": "1.0.0-rc1","Swashbuckle.AspNetCore.SwaggerUi": "1.0.0-rc1","System.Xml.XmlDocument": "4.3.0","Unity": "4.0.1","WebApiCommon": "1.0.0-*"
  },"frameworks": {
    "netcoreapp1.1": {
      "dependencies": {
        "Microsoft.NETCore.App": {
          "type": "platform","version": "1.1.1"
        }

      },"imports": [
        "dotnet5.6","portable-net45+win8"
      ]
    }
  },"publishOptions": {
    "include": [
      "wwwroot","**/*.cshtml","appsettings.json","web.config"
    ]
  },"runtimeOptions": {
    "configProperties": {
      "System.GC.Server": true
    }
  },"scripts": {
    "postpublish": [ "dotnet publish-iis --publish-folder %publish:OutputPath% --framework %publish:FullTargetFramework%" ]
  },"tools": {
    "Microsoft.AspNetCore.Server.IISIntegration.Tools": "1.1.0-preview4-final","Microsoft.DotNet.Watcher.Tools": "1.1.0-preview4-final"
  }
}