Boxy has been working on pushing const generics forward by implementing parts of the
const_evaluatable_checked feature, fixing bugs and making rustdoc work with const generics.
Boxy is also a frequent contributor to #project-const-generics discussions and meetings.
Léo Lanteri Thauvin has been a consistent contributor of refactorings and improvements to rustc.
Recently, Léo has been implementing a Major Change Proposal to migrate the
unsafe checker to operate on THIR instead of MIR.
the8472 has been a frequent contributor of performance improvements to both the compiler itself as well as the standard library. the8472 can also be frequently found on Zulip offering advice and help.