[libcxx-commits] [libcxx] [libc++] Improve the output of the generated-output CI job (PR #68903)

[via libcxx-commits]

EricWF wrote:

As mentioned in libc++ chat, there's already a code format checker running on our changes. And it completes in 1 minute as opposed to 2+ hours of queuing. 

(See this change for an example of that formatter).

https://github.com/llvm/llvm-project/pull/68903