Comment by nine_k

This sounds reasonable. But this is a build server, not the entire project infrastructure.

I bet the server should be quite powerful, with tons of CPU, RAM and SSD/NVMe to allow for fast builds. Memory of all kinds was getting more and more expensive this year, so the prolonged sourcing is understandable.

The trusted contributor, as the text says, is considered more trustworthy than an average colocation company. Maybe they have an adequate "basement", e.g. run their own colo company, or something.

It would be great to have a spare server, but likely it's not that simple, including the organization and the trust. A build server would be a very juicy attack target to clandestinely implant spyware.