Hello and welcome to another issue of This Week in Rust!
on Bluesky or
.
Want to get involved? and archives can be viewed at .
Want TWIR in your inbox?
- — What satellites measure, spectral bands, indices, cloud detection.
This week's crate is !
,
or
if you would like your feature to be tracked as a part of this list.
Always wanted to contribute to open-source projects but did not know where to start?
Every week we highlight some tasks from the Rust community for you to pick and get started!
Some of these tasks may also have mentors available, visit the task page for more information.
No Calls for participation were submitted this week.
If you are a Rust project owner and are looking for contributors, please submit tasks or by reaching out on !
| 2026-06-05 | Virtual | 2026-07-08 - 2026-07-10
If you are an event organizer hoping to expand the reach of your event, please submit a link to the website through a or
502 pull requests were
was a massive perf. win.
Summary:
| (instructions:u) | mean | range | count |
|---|---|---|---|
| Regressions ❌ (primary) | 0.3% | [0.1%, 0.4%] | 62 |
| Regressions ❌ (secondary) | 0.5% | [0.1%, 1.5%] | 77 |
| Improvements ✅ (primary) | -1.7% | [-8.8%, -0.2%] | 18 |
| Improvements ✅ (secondary) | -13.6% | [-85.6%, -0.0%] | 34 |
| All ❌✅ (primary) | -0.2% | [-8.8%, 0.4%] | 80 |
2 Regressions, 2 Improvements, 5 Mixed; 4 of them in rollups
31 artifact comparisons made in total
. These
are the RFCs that were approved for implementation this week:
announces the 'final comment period' for RFCs and key PRs
which are reaching a decision. Express your opinions now.
- ,
,
.
Let us know if you would like your PRs, Tracking Issues or RFCs to be tracked as a part of this list.
- No New or Updated RFCs were created this week.
- 2026-05-17 | Virtual (Dallas, TX, US) |
- 2026-05-19 | Virtual (Washington, DC, US) |
- 2026-05-13 | Girona, ES |
- 2026-05-14 | Melbourne, AU |
- to get
it mentioned here. Please remember to add a link to the event too.
Email the
Please see the latest
Of the last 150 merged PRs to Bun, 108 are memory-safety-adjacent — missed cleanup on an error path, use-after-free, uninitialized reads, out-of-bounds access, reentrancy. 75 of those would not compile in a language with destructors, move semantics, and a borrow checker. One in three PRs we ship is "forgot to free something on an error path."
Of the 108, ~88 are in Zig. The ~14 in C++ are mostly ref-cycles and GC-concurrency races — the residual class that survives any language. So the Zig→Rust delta is real: the Zig bugs are exactly the destructor/ownership-fixable kind, and the C++ side is already near the floor.
Without stronger compile-time guarantees, this stays a cat-and-mouse game. The proposal is to remove the largest bug class structurally rather than fix instances of it indefinitely.
– for the suggestion!
it mentioned here. Please remember to add a link to the event too.
Email the
Please see the latest
Of the last 150 merged PRs to Bun, 108 are memory-safety-adjacent — missed cleanup on an error path, use-after-free, uninitialized reads, out-of-bounds access, reentrancy. 75 of those would not compile in a language with destructors, move semantics, and a borrow checker. One in three PRs we ship is "forgot to free something on an error path."
Of the 108, ~88 are in Zig. The ~14 in C++ are mostly ref-cycles and GC-concurrency races — the residual class that survives any language. So the Zig→Rust delta is real: the Zig bugs are exactly the destructor/ownership-fixable kind, and the C++ side is already near the floor.
Without stronger compile-time guarantees, this stays a cat-and-mouse game. The proposal is to remove the largest bug class structurally rather than fix instances of it indefinitely.
– for the suggestion!
Email list hosting is sponsored by
SOCIAL SHARE CARD GENERATOR