The majority of the time spent in some of our CI jobs (~5 seconds or sometimes more) is spent downloading and installing tools managed by aftman, and I suspect this will grow slightly over time.

It would be great if aftman could download & install tools in parallel similar to what cargo does for tools that are already trusted or when using --no-trust-check. Maybe install could even be split into two phases, where the first is accepting trust for any new tools and the second is the download & install process.