ServiceStack sourcecode nuget issue

I’m having trouble building SS locally on my machine to investigate a serialization issue with datetimepoffsets. I’ve forked from master and getting the following nuget error for ServiceStack.Aws

    The feed 'ServiceStack CI feed [https://build.servicestack.net/guestAuth/app/nuget/v1/FeedService.svc]' lists package 'ServiceStack.Aws.5.8.1' but multiple attempts to download the nupkg have failed. The feed is either invalid or required packages were removed while the current operation was in progress. Verify the package exists on the feed and try again.
NuGet.Protocol.Core.Types.FatalProtocolException: The feed 'ServiceStack CI feed [https://build.servicestack.net/guestAuth/app/nuget/v1/FeedService.svc]' lists package 'ServiceStack.Aws.5.8.1' but multiple attempts to download the nupkg have failed. The feed is either invalid or required packages were removed while the current operation was in progress. Verify the package exists on the feed and try again. ---> NuGet.Protocol.PackageNotFoundProtocolException: Unable to find package 'ServiceStack.Aws.5.8.1'.
   at NuGet.Protocol.FindPackagesByIdNupkgDownloader.<GetNuspecReaderFromNupkgAsync>d__6.MoveNext()

All odd patch version numbers are pre-release packages on MyGet, only the latest version is available on MyGet, currently v5.10.1, I’d recommend you upgrade to the latest NuGet v5.10.0 which are published indefinitely.