sdk: dotnet restore fails

This issue popped up this morning after the Microsoft.NETCore.App (>= 1.0.0) was upgraded to version 1 from RC2. The problem occurs when I run a dotnet restore as a VSTS build step as well as locally on my VS2015 box.

Steps to reproduce

run dotnet restore on a MVC website

Expected behavior

dotnet restore works

Actual behavior

Errors in S:\portal\src\portal.Web\Portal.Web.xproj
    Version conflict detected for Microsoft.CodeAnalysis.Common.
     Portal.Web (>= 1.0.0) -> Microsoft.NETCore.App (>= 1.0.0) -> Microsoft.CodeAnalysis.VisualBasic (>= 1.3.0) -> Microsoft.CodeAnalysis.Common (>= 1.3.0)
     Portal.Web (>= 1.0.0) -> Microsoft.VisualStudio.Web.CodeGeneration.Tools (>= 1.0.0-preview1-final) -> Microsoft.VisualStudio.Web.CodeGeneration (>= 1.0.0-preview1-final) -> Microsoft.VisualStudio.Web.CodeGeneration.EntityFrameworkCore (>= 1.0.0-preview1-final) -> Microsoft.VisualStudio.Web.CodeGeneration.Core (>= 1.0.0-preview1-final) -> Microsoft.VisualStudio.Web.CodeGeneration.Templating (>= 1.0.0-preview1-final) -> Microsoft.VisualStudio.Web.CodeGeneration.Utils (>= 1.0.0-preview1-final) -> Microsoft.CodeAnalysis.CSharp.Workspaces (>= 1.3.0-beta1-20160429-01) -> Microsoft.CodeAnalysis.Workspaces.Common (= 1.3.0-beta1-20160429-01) -> Microsoft.CodeAnalysis.Common (= 1.3.0-beta1-20160429-01).
    Package Microsoft.AspNetCore.Mvc 1.0.0 is not compatible with netcoreapp1.0 (.NETCoreApp,Version=v1.0). Package Microsoft.AspNetCore.Mvc 1.0.0 supports:
      - net451 (.NETFramework,Version=v4.5.1)
      - netstandard1.6 (.NETStandard,Version=v1.6)
    One or more packages are incompatible with .NETCoreApp,Version=v1.0.
Feeds used:
    https://api.nuget.org/v3/index.json
    https://dotnet.myget.org/F/cli-deps/api/v3/index.json
    https://dotnet.myget.org/F/dotnet-core/api/v3/index.json

Environment data

`dotnet --info` output:

.NET Command Line Tools (1.0.0-preview1-002702)

Product Information:
 Version:     1.0.0-preview1-002702
 Commit Sha:  6cde21225e

Runtime Environment:
 OS Name:     Windows
 OS Version:  10.0.10586
 OS Platform: Windows
 RID:         win10-x64

project.json file

{
  "userSecretsId": "aspnet-FamilyPortal.Web-a9159440-714e-4476-81ad-8d47121b825f",

  "dependencies": {
    "Microsoft.NETCore.App": "1.0.0",
    "Microsoft.AspNetCore.Razor.Tools": {
      "version": "1.0.0-preview1-final",
      "type": "build"
    },
    "Microsoft.EntityFrameworkCore.Tools": {
      "version": "1.0.0-preview1-final",
      "type": "build"
    },
    "Microsoft.VisualStudio.Web.CodeGeneration.Tools": {
      "version": "1.0.0-preview1-final",
      "type": "build"
    },
    "Microsoft.VisualStudio.Web.CodeGenerators.Mvc": {
      "version": "1.0.0-preview1-final",
      "type": "build"
    },
    "Microsoft.AspNetCore.Authentication.Cookies": "1.0.0",
    "Microsoft.AspNetCore.Diagnostics": "1.0.0",
    "Microsoft.AspNetCore.Diagnostics.EntityFrameworkCore": "1.0.0",
    "Microsoft.AspNetCore.Identity.EntityFrameworkCore": "1.0.0",
    "Microsoft.AspNetCore.Mvc": "1.0.0",
    "Microsoft.AspNetCore.Server.IISIntegration": "1.0.0",
    "Microsoft.AspNetCore.Server.Kestrel": "1.0.0",
    "Microsoft.AspNetCore.StaticFiles": "1.0.0",
    "Microsoft.EntityFrameworkCore.SqlServer": "1.0.0",
    "Microsoft.Extensions.Configuration.EnvironmentVariables": "1.0.0",
    "Microsoft.Extensions.Configuration.Json": "1.0.0",
    "Microsoft.Extensions.Configuration.UserSecrets": "1.0.0",
    "Microsoft.Extensions.Logging": "1.0.0",
    "Microsoft.Extensions.Logging.Console": "1.0.0",
    "Microsoft.Extensions.Logging.Debug": "1.0.0",
    "Microsoft.VisualStudio.Web.BrowserLink.Loader": "14.0.0"
  },

  "tools": {
    "Microsoft.AspNetCore.Razor.Tools": {
      "version": "1.0.0-preview1-final",
      "imports": "portable-net45+win8+dnxcore50"
    },
    "Microsoft.AspNetCore.Server.IISIntegration.Tools": {
      "version": "1.0.0-preview1-final",
      "imports": "portable-net45+win8+dnxcore50"
    },
    "Microsoft.EntityFrameworkCore.Tools": {
      "version": "1.0.0-preview1-final",
      "imports": [
        "portable-net45+win8+dnxcore50",
        "portable-net45+win8"
      ]
    },
    "Microsoft.Extensions.SecretManager.Tools": {
      "version": "1.0.0-preview1-final",
      "imports": "portable-net45+win8+dnxcore50"
    },
    "Microsoft.VisualStudio.Web.CodeGeneration.Tools": {
      "version": "1.0.0-preview1-final",
      "imports": [
        "portable-net45+win8+dnxcore50",
        "portable-net45+win8"
      ]
    }
  },

  "frameworks": {
    "netcoreapp1.0": {
      "imports": [
        "dotnet5.6",
        "dnxcore50",
        "portable-net45+win8"
      ]
    }
  },

  "buildOptions": {
    "emitEntryPoint": true,
    "preserveCompilationContext": true
  },

  "runtimeOptions": {
    "gcServer": true
  },

  "publishOptions": {
    "include": [
      "wwwroot",
      "Views",
      "appsettings.json",
      "web.config"
    ]
  },

  "scripts": {
    "prepublish": [ "npm install", "bower install", "gulp clean", "gulp min" ],
    "postpublish": [ "dotnet publish-iis --publish-folder %publish:OutputPath% --framework %publish:FullTargetFramework%" ]
  }
}

.nuget/Nuget.Config

<?xml version="1.0" encoding="utf-8"?>
<configuration>
  <solution>
    <add key="disableSourceControlIntegration" value="true" />
  </solution>
  <packageSources>
    <!--To inherit the global NuGet package sources remove the <clear/> line below -->
    <clear />
    <add key="cli-deps" value="https://dotnet.myget.org/F/cli-deps/api/v3/index.json" />
    <add key="dotnet-core" value="https://dotnet.myget.org/F/dotnet-core/api/v3/index.json" />
    <add key="api.nuget.org" value="https://api.nuget.org/v3/index.json" />
  </packageSources>

</configuration>