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Santiago Pastorino - @spastorino

👋, my name is Santiago Pastorino and I'm a software engineer from Uruguay. I'm a co-founder at WyeWorks, a Rust compiler team core contributor, Rust conferences organizer (RustLatam, RustFest and RustConf) and a Ruby on Rails core team alumni. I'm currently sponsored to work on the Rust compiler by Futurewei.


I mostly contribute to the compiler of the Rust programming language.

Here's a summary of my mostly noteworthy contributions:

  • Rust Compiler MIR - Helped with Non-Lexical Lifetimes (NLL) implementation; implemented various MIR optimizations including MIR 2.0 Place refactor.
  • Rust Compiler Const-Eval - Implemented inline consts RFC 2920.
  • Rust Compiler Traits and Type System - Working as a member of the Traits working group, with a main focus on getting Type Alias Impl Traits stabilized.
  • Rustc Dev Guide: Leading the working group, writing and helping organizing the documentation effort.
  • Lead Rustc Prioritization working group: prioritizing Rust compiler issues, fixed a lot of critical and high priority issues and support for the Rust compiler and Rust Lang team meetings.
  • Lead Rustc Meta working group: helped organize the MCP process and the Rust compiler structure.
  • Cargo Bisect Rustc: automated the tool to find regressions in the Rust compiler in a simpler way.
  • Lead organizer of Rust Latam conference, member of Rustfest European conference and member of RustConf Program Committee.


Feel free to send me an email to


  1. Empowering everyone to build reliable and efficient software.

    Rust 70.8k 9.6k

  2. A guide to how rustc works and how to contribute to it.

    HTML 1.2k 355

  3. A home for compiler team planning documents, meeting minutes, and other such things.

    HTML 296 60

  4. Bisects rustc, either nightlies or CI artifacts

    Rust 129 45

  5. Triage Bot

    Rust 115 48

  6. rails/rails Public

    Ruby on Rails

    Ruby 51.3k 20.6k

366 contributions in the last year

Aug Sep Oct Nov Dec Jan Feb Mar Apr May Jun Jul Aug Mon Wed Fri
Activity overview
Contributed to rust-lang/rust, rust-lang/rustc-dev-guide, rust-lang/triagebot and 17 other repositories

Contribution activity

August 2022

Created a pull request in rust-lang/rust that received 17 comments

Iterate generics_def_id_map in reverse order to fix P-critical issue

Closes #100187 Fixes a P-critical beta regression.

+26 −1 17 comments

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