Unable to build (timeout when restoring) #33294
Description
I'm trying to build on a newly-installed Fedora 31 machine. Dependencies have been installed according to the documentation, but I'm getting a timeout when build.sh tries to restore.
/home/leandro/runtime/.dotnet/sdk/5.0.100-preview.2.20155.14/NuGet.targets(124,5): error : Unable to load the service index for source https://dnceng.pkgs.visualstudio.com/public/_packaging/dotnet-tools/nuget/v3/index.j
son. [/home/leandro/runtime/tools-local/tasks/installer.tasks/installer.tasks.csproj]
/home/leandro/runtime/.dotnet/sdk/5.0.100-preview.2.20155.14/NuGet.targets(124,5): error : The HTTP request to 'GET https://dnceng.pkgs.visualstudio.com/public/_packaging/dotnet-tools/nuget/v3/index.json' has timed out after 100000ms. [
/home/leandro/runtime/tools-local/tasks/installer.tasks/installer.tasks.csproj]
NuGet.Protocol.Core.Types.FatalProtocolException: Unable to load the service index for source https://dnceng.pkgs.visualstudio.com/public/_packaging/dotnet-tools/nuget/v3/index.json.
(I've temporarily changed some shell scripts in eng/ to execute with bash tracing, plus force msbuild to be called with diag verbosity. Can send the full log.)
It doesn't seem to be a network issue. Accessing that URL from the command line with something like Curl works just fine and returns me the expected JSON data.
This is unrelated to #2199.
master is at 2018c79.