As people have probably seen we have an experts map that tries to put together different areas of the compiler with their respective directories that involved the code of that area and the experts and people familiar with the code base of that area.
We wanted to make a call for people that work on the compiler to automatically sign in there the areas they feel experts or a bit familiar or knowledgeable. In meanwhile you're at there in the areas you know about if you can complete the directories section would be appreciated.
This is the issue in question https://github.com/rust-lang/compiler-team/issues/87 and you can see the experts map here https://github.com/rust-lang/compiler-team/blob/master/content/experts/map.toml