The CI was failing because the runner's package index was stale, causing a 404 when fetching libasound2-dev (a dependency of portaudio19-dev). Running apt-get update first refreshes the index.
The CI was failing because the runner's package index was stale, causing a 404 when fetching libasound2-dev (a dependency of portaudio19-dev). Running apt-get update first refreshes the index.