Flaky network / nuget downloads

[thomhurst]

Description

I've seen this for a couple of months now. Fairly often NuGet will error my pipelines with failures to download a package. Happens way too frequently nowadays so I assume something is wrong somewhere?

/Users/runner/.dotnet/sdk/8.0.401/NuGet.targets(174,5): error : The feed 'nuget.org [https://api.nuget.org/v3/index.json]' lists package 'Polly.8.4.1' 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. [/Users/runner/work/ModularPipelines/ModularPipelines/ModularPipelines.Analyzers.sln]

Platforms affected

• Azure DevOps
• GitHub Actions - Standard Runners
• GitHub Actions - Larger Runners

Runner images affected

• Ubuntu 20.04
• Ubuntu 22.04
• Ubuntu 24.04
• macOS 12
• macOS 13
• macOS 13 Arm64
• macOS 14
• macOS 14 Arm64
• Windows Server 2019
• Windows Server 2022

Image version and build link

https://github.com/thomhurst/ModularPipelines/actions/runs/10948383717/job/30399283041

Is it regression?

Yes?

Expected behavior

Download succeeds

Actual behavior

Download fails

Repro steps

dotnet restore