Compile all-of-dub?

[qznc via Digitalmars-d]

The Rust people have this Crater [0,1] tool, which essentially 
builds all Rust libraries with two compiler versions and compares 
for regressions.

Since D has a central library repository as well, it would make 
sense to do this broad testing as well. We don't have nightly 
builds (or do we?), but release candidates. Is something like 
this already done?

For example, dfmt broke between 2.068 and 2.068.1 [2]. It is 
easily possible to detect regressions like this automatically. 
The biggest problem is probably that someone has to provide 
servers or pay for AWS instances.

[0] https://internals.rust-lang.org/t/crater-plans/2206
[1] https://github.com/brson/taskcluster-crater
[2] 
https://github.com/Hackerpilot/dfmt/pull/184#issuecomment-138713802