whoami

Nilstrieb (he/him)

• contributing since 2021
• compiler contributors team since 2022
• all areas of the compiler
• issue triaging
• 1.72 cargo feature cfg diagnostics

reviewed ♥

compiler-errors, style team member

WaffleLapkin, the most non-binary compiler contributor

jyn514, the gayest alumni of the bootstrap team

lunasorcery, friend of the above

i want to contribute

• don't need to be an expert!
• time and interest

what to contribute?

not writing code

thanks.rust-lang.org

triaging issues

easy to get started

• labelling
• minimization
• bisecting
• adding tests

labelling

labelling

bisection

bisection

$ cargo new bisect
	Created binary (application) `bisect` package
$ cd bisect
$ vim src/main.rs 
$ cargo-bisect-rustc --access github --regress ice \
	--start 2023-01-01 --end 2023-12-19

bisection

minimization

minimization

I minimized that issue to 60 lines in 2 hours

adding tests

bug has been fixed, but no test added

just commit a test to close the issue!

existing unstable features

• stabilize
• close

tracking issues

tracking the state of a feature

719 issues (2023-01-03)

new issues aren't ready yet

really old issues often have problems

go to golden middle :)

summarize,

aggregate open questions

aggregate resolved questions

propose next steps

stabilize...

...or close

final comment periods

writing code

official tooling

always in need of help!

• clippy
• rust-analyzer
• cargo
• rustup
• rustfmt

standard library

limited review bandwidth!

• improve documentation
• performance improvements
• bug fixes
• APIs are selective

compiler contributions

• diagnostics are a great starting point (A-diagnostics)
• internal compiler error fixes
• E-{mentor,easy} labels

examples of my PRs

examples of my PRs

examples of my PRs

examples of my PRs

rustc dev guide

looking at prs

• learn more about what other people are doing
• leave review comments if you see something

to remember

• volunteers
• review times sometimes long (weeks)
• rust-lang/rust: ping if review >2 weeks

ask for help

rust-lang.zulipchat.com

see you on GitHub!