Maintaining and improving the existing, implementing, and researching new exploit mitigations for the Rust compiler

Define compiler intermediate representation usable by external tools

Refactoring the trait system of rustc

Improving the binary size of Rust programs and libraries

增進 rustc 編譯效能（編譯時間）

Soundly expanding the capabilities of compile-time function evaluation in Rust

除錯工具及基礎功能

Aiming to make rustc better at telling the user why the compiler isn't smart enough to understand their code yet

libgccjit AOT codegen for rustc

Improving incremental compilation in rustc

代表 Rust 與 LLVM 團隊合作

Revival and Improving the Rust Macros

撰寫基於 MIR 的最佳化程式碼，並重構 MIR 使其更易最佳化。

使平行化編譯在 rustc 中成為常態

針對實現新的借用檢查的實驗性工作

Implementing polymorphization to reduce unnecessary monomorphisation in rustc

Triaging bugs, mainly deciding if bugs are critical (potential release blockers) or not

藉由讓 rustc 指南和 API 文件更加完善，使得學習編譯器更簡單。

Helping new and experienced contributors learn more about rustc

改善 -Z self-profile 功能