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@dotnet/dnceng do we already have retries here? cc test monitor of the week @noahfalk

/ runtime (Build Browser wasm Linux Release _Threading_PerfTracing_BuildOnly)
.dotnet/sdk/7.0.100-preview.5.22307.18/NuGet.RestoreEx.targets#L19
.dotnet/sdk/7.0.100-preview.5.22307.18/NuGet.RestoreEx.targets(19,5): error : (NETCORE_ENGINEERING_TELEMETRY=Restore) Failed to download package 'Microsoft.AspNetCore.App.Ref.6.0.5' from 'https://pkgs.dev.azure.com/dnceng/9ee6d478-d288-47f7-aacc-f6e6d082ae6d/_packaging/45bacae2-5efb-47c8-91e5-8ec20c22b4f8/nuget/v3/flat2/microsoft.aspnetcore.app.ref/6.0.5/microsoft.aspnetcore.app.ref.6.0.5.nupkg'.
The HTTP request to 'GET https://pkgs.dev.azure.com/dnceng/9ee6d478-d288-47f7-aacc-f6e6d082ae6d/_packaging/45bacae2-5efb-47c8-91e5-8ec20c22b4f8/nuget/v3/flat2/microsoft.aspnetcore.app.ref/6.0.5/microsoft.aspnetcore.app.ref.6.0.5.nupkg' has timed out after 100000ms.
 [Check failure on line 19 in .dotnet/sdk/7.0.100-preview.5.22307.18/NuGet.RestoreEx.targets](https://github.com/dotnet/runtime/pull/72874/files#annotation_4124695891) 

/ runtime (Build Browser wasm Linux Release _Threading_PerfTracing_BuildOnly)
.dotnet/sdk/7.0.100-preview.5.22307.18/NuGet.RestoreEx.targets#L19
.dotnet/sdk/7.0.100-preview.5.22307.18/NuGet.RestoreEx.targets(19,5): error : (NETCORE_ENGINEERING_TELEMETRY=Restore) Central Directory corrupt.

@dotnet/deenceng do we already have retries here? cc test monitor of the week @noahfalk

/ runtime (Build Browser wasm Linux Release _Threading_PerfTracing_BuildOnly)
.dotnet/sdk/7.0.100-preview.5.22307.18/NuGet.RestoreEx.targets#L19
.dotnet/sdk/7.0.100-preview.5.22307.18/NuGet.RestoreEx.targets(19,5): error : (NETCORE_ENGINEERING_TELEMETRY=Restore) Failed to download package 'Microsoft.AspNetCore.App.Ref.6.0.5' from 'https://pkgs.dev.azure.com/dnceng/9ee6d478-d288-47f7-aacc-f6e6d082ae6d/_packaging/45bacae2-5efb-47c8-91e5-8ec20c22b4f8/nuget/v3/flat2/microsoft.aspnetcore.app.ref/6.0.5/microsoft.aspnetcore.app.ref.6.0.5.nupkg'.
The HTTP request to 'GET https://pkgs.dev.azure.com/dnceng/9ee6d478-d288-47f7-aacc-f6e6d082ae6d/_packaging/45bacae2-5efb-47c8-91e5-8ec20c22b4f8/nuget/v3/flat2/microsoft.aspnetcore.app.ref/6.0.5/microsoft.aspnetcore.app.ref.6.0.5.nupkg' has timed out after 100000ms.
 [Check failure on line 19 in .dotnet/sdk/7.0.100-preview.5.22307.18/NuGet.RestoreEx.targets](https://github.com/dotnet/runtime/pull/72874/files#annotation_4124695891) 

/ runtime (Build Browser wasm Linux Release _Threading_PerfTracing_BuildOnly)
.dotnet/sdk/7.0.100-preview.5.22307.18/NuGet.RestoreEx.targets#L19
.dotnet/sdk/7.0.100-preview.5.22307.18/NuGet.RestoreEx.targets(19,5): error : (NETCORE_ENGINEERING_TELEMETRY=Restore) Central Directory corrupt.

I'll take a look; local retries can be tricky to find in the logs (Edit this is a build log not a test log)

@danmoseley the retries we added as "experimental" before are built in to NuGet Clients in 7.0, so the retry occurred but it thought it succeeded. What happened here seems to be that the zip file was downloaded incompletely but "successfully", leading to the later on "Central Directory corrupt" message. This is the first I've seen it but if you see a second one it may be worth creating a known issue about.

Opened an issue for the failure in the host tests. The WASM/tvOS Nuget feed issues can be ignored as the test doesn't run there anyway.