dotnet cli - "detected package downgrade" - asp.net-core

Question

I have finally managed to get a project's dependencies downloaded with dotnet restore, after going through the process of clearing all nuget cache, dnx cache, and updating the cli using the beta channel.
But using the project.json below, I get an error;
warn : Detected package downgrade: Microsoft.Dnx.Compilation.CSharp.Abstractions from 1.0.0-rc2-16553 to 1.0.0-rc2-16552
I'm not sure what this means, or how to fix it. The things still download, but this concerns me.
I am using the following;
dotnet/cli
.NET Command Line Tools (1.0.0-beta-001540)
Product Information:
Version: 1.0.0-beta-001540
Commit Sha: 6aeed1f52d
Runtime Environment:
OS Name: Windows
OS Version: 10.0.10586
OS Platform: Windows
Runtime Id: win10-x64
dnvm list
Active Version Runtime Architecture OperatingSystem Alias
------ ------- ------- ------------ --------------- -----
1.0.0-rc1-update1 clr x64 win
1.0.0-rc1-update1 clr x86 win
1.0.0-rc1-update1 coreclr x64 win
1.0.0-rc1-update1 coreclr x86 win
1.0.0-rc2-16551 clr x86 win
* 1.0.0-rc2-16551 coreclr x64 win default
1.0.0-rc2-16551 coreclr x86 win
nuget.config
<packageSources>
<add key="aspnet-core" value="https://www.myget.org/F/aspnetcidev/api/v3/index.json" />
<add key="api.nuget.org" value="https://api.nuget.org/v3/index.json" />
<add key="nuget.org" value="https://www.nuget.org/api/v2/" />
</packageSources>
project.json
{
"webroot": "wwwroot",
"version": "1.0.0-*",
"dependencies": {
"Microsoft.NETCore.Platforms": "1.0.1-*",
"Microsoft.AspNetCore.Diagnostics": "1.0.0-*",
"Microsoft.AspNetCore.IISPlatformHandler": "1.0.0-*",
"Microsoft.AspNetCore.Mvc": "1.0.0-*",
"Microsoft.AspNetCore.Mvc.TagHelpers": "1.0.0-*",
"Microsoft.AspNetCore.Server.Kestrel": "1.0.0-*",
"Microsoft.AspNetCore.StaticFiles": "1.0.0-*",
"Microsoft.Extensions.Configuration.Json": "1.0.0-*",
"Microsoft.Extensions.Logging.Console": "1.0.0-*",
"Microsoft.AspNetCore.Identity": "1.0.0-*",
},
"frameworks": {
"dnx451": {
"dependencies": {
"Microsoft.AspNetCore.Mvc.Dnx": "1.0.0-*"
}
},
"net451": { },
"dnxcore50": {
"imports": "portable-net451+win7+win8",
"dependencies": {
"NETStandard.Library": "1.0.0-*"
}
}
},
"publishExclude": [
"node_modules",
"bower_components",
"**.xproj",
"**.user",
"**.vspscc"
],
"exclude": [
"wwwroot",
"node_modules",
"bower_components"
]
}

Answer 1

One of the libraries explicitly require 1.0.0-rc2-16552 version, that's why you get the warning. Once the library u[grade to supports higher version warnings will disappear.
This is an old post so not sure which library is doing this at the time of your post, but for people with same warning, go through your libraries and look which one has version dependency.
Basically, remove the library or stay on downgraded version until the library updates and supports the new version.