@matthewjasper has been a huge contributor to the Non-Lexical
Lifetimes (NLL) work, filing issues and fixing bugs starting way back in
2017. Matthew has also been fixing compiler soundness bugs and making
miscellaneous improvements to Rust's Middle Intermediate
Representation (MIR). Most recently, Matthew has removed all uses of
gensym from the compiler, as well as the
itself (which was implemented in a way that injected
subtle bugs with incremental compilation).
@wesleywiser first started contributing to Rust way back in 2015, before even the 1.0 release, with various documentation fixes. Since then, Wesley has improved the incremental compilation system, added MIR optimization passes like constant-propagation and inlining, and has been part of the compiler's self-profiler effort, starting with its first version and continuing today as a co-lead of WG-self-profile.