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"tags": [
"This Week in Rust",
"Rust",
"@thisweekinrust.bsky.social",
"@ThisWeekinRust",
"send us a pull request",
"We love contributions",
"on GitHub",
"this-week-in-rust.org",
"please submit a PR",
"Subscribe here",
"Announcing Rust 1.94.0 | Rust Blog",
"🦀 State of Rust Survey Findings",
"Release 0.7.0 · uutils/coreutils",
"mdterm v1.0.0 - A terminal-based Markdown browser",
"The Anatomy of a 500ns Parser: Porting libphonenumber to Rust",
"mini-agent: A Rust AI Agent Framework",
"ClickHouse meets SeaORM: Arrow-powered data pipeline",
"Rustaceans.AI",
"Leptodon 1.0.0: UI toolkit for the Leptos WASM framework",
"Signing Rust Binaries Shouldn't Require Shell Scripts",
"symbolic derivatives and the rust rewrite of RE# | ian erik varatalu",
"The State of Allocators in 2026",
"series] [FORTRAN to Rust: part 1",
"The Cost of Indirection in Rust",
"Why SeaORM over JavaScript client database options?",
"Rust is slowly but surely eating PostgreSQL: Deep dive into Neon, ParadeDB, PgDog and more",
"What Happens When You Constrain an Event-Driven System to Three Primitives",
"My Rust dev setup in 2026",
"audio] [Netstack.FM episode 30 — uReq with Martin Algesten",
"Weighing up Zngur and CXX for Rust/C++ Interop",
"ZK snarks for rust developer part 1/8",
"Get in Line (Part 2) - Vyukov's Queue and its specializations",
"How to stop fighting with coherence and start writing context-generic trait impls",
"Rewriting Our Database in Rust",
"OpenTelemetry for Rust Developers - The Complete Implementation Guide",
"Rust Shined Over Python for My CLI Tool - Smiling Dev Blog",
"Write small Rust scripts",
"sentencex",
"Santhosh Thottingal",
"Please submit your suggestions and votes for next week",
"Cargo",
"Rustup",
"Rust language RFCs",
"Let us know",
"diesel-guard - REFRESH MATERIALIZED VIEW without CONCURRENTLY",
"diesel-guard - ADD CHECK CONSTRAINT without NOT VALID",
"diesel-guard - ADD FOREIGN KEY without NOT VALID",
"diesel-guard - no lock_timeout/statement_timeout before DDL",
"here",
"PR to TWiR",
"Bluesky",
"Mastodon",
"**Rust India Conference 2026**",
"**Oxidize Conference**",
"**EuroRust**",
"merged in the last week",
"enable `PassMode::Indirect { on_stack: true, .. }` tail call arguments",
"constify `Vec::{into, from}_raw_parts{_in|_alloc}`",
"implement `MaybeDangling` compiler support",
"stabilize `control_flow_ok`",
"`compile`: Turn warning summaries into errors also",
"`fix`: Switch from ad-hoc to structured warnings",
"`script`: surpress `unused_features` lint for embedded",
"`tests`: allow for 'could not' as well as couldn't in test output",
"add missing truncate when writing `.crate` files",
"ignore implicit std dependencies in `unused-crate-dependencies` lint",
"let git decide when to run gc",
"split `build-dir` lock into dedicated lock",
"add `manual_pop_if` lint",
"`doc_paragraphs_missing_punctuation`: Trim picture symbols",
"do not materialize snippets when it is not needed to",
"fix ICE in `match_same_arms`",
"fix ICE in `swap_binop()`",
"fix ICE when using the `min_generic_const_args` incomplete feature",
"fix `infinite_loop` wrong suggestion inside conditional branches",
"fix `redundant_closure` suggests wrongly when local is derefed to callable",
"fix `unnecessary_safety_comment` false positive on code blocks inside inner docs",
"fix semicolon-inside-block inside `try_blocks`",
"optimize `allow_unwrap_types` evaluation to eliminate performance regression",
"do not re-query source roots per crate in analysis-stats",
"offer `destructure_struct_binding` on self param",
"when going to def on `?` on `Result` that goes through `From`, go to the `From` impl",
"add `has_pending` methods to `Incoming`/`Outgoing`/`ReqQueue` in `lsp_server`",
"`cfg_select` supports non token-tree tokens",
"align `is_rust()` with rustc by correcting constructor ABI in next solver",
"do not use PostAnalysis TypingMode for IDE method resolution",
"file watcher should watch directories recursively",
"fix wrong descend range for `add_missing_match_arms`",
"offer block `.let` in ref-expr in match arm",
"153521",
"ddd36bd5..3945997a",
"Full report here",
"Approved RFCs",
"RFC (request for comments) process",
"the team",
"Remove `ATTRIBUTE_ORDER`",
"Rust RFCs",
"Compiler Team",
"(MCPs only)",
"Language Team",
"Language Reference",
"Leadership Council",
"Unsafe Code Guidelines",
"New and Updated RFCs",
"RFC: Custom lint profiles",
"Rust Girona",
"**Sessió setmanal de codificació / Weekly coding session**",
"Rust Berlin",
"**Rust Hack and Learn**",
"Rust DC",
"**Mid-month Rustful**",
"Vancouver Rust",
"**Embedded Rust**",
"Rust and C++ Cardiff",
"**Hybrid event with Rust Dortmund!**",
"Seattle Rust User Group",
"**March, 2026 SRUG (Seattle Rust User Group) Meetup**",
"Packt Publishing Limited",
"**Rust Adoption, Safety, and Cloud with Francesco Ciulla**",
"Dallas Rust User Meetup",
"**Fourth Tuesday**",
"Women in Rust",
"**Lunch & Learn: Crates, Tips & Tricks Lightning Talks - Bring your ideas!**",
"**Rust Girona Hack & Learn 03 2026**",
"Indy Rust",
"**Indy.rs - with Social Distancing**",
"Rust Nuremberg",
"**Rust Nürnberg online**",
"Rust Circle Meetup",
"**Rust Circle Meetup**",
"Rust 🦀 TLV",
"**In person Rust March 2026 at AWS in Tel Aviv**",
"Rust Developers Amsterdam Group",
"**Meetup @ Instruqt**",
"Rust Rhein-Main",
"**Writing a Python compiler in Rust**",
"Rust Bern",
"**2026 Rust Talks Bern #1 @bespinian**",
"Post Tenebras Lab",
"**Rust Meetup Geneva**",
"Rust Dortmund",
"**Rust Dortmund Meetup - Intro to Embedded Rust - March**",
"Rustikon",
"**Rustikon Conference**",
"Rust Meetup Augsburg",
"**Rust Meetup #18** : Ludwig Weinzierl - Bevy: Spielentwicklung mit Rust",
"Rust Aarhus",
"**Hack Night - Advent of Code**",
"Rust Manchester",
"**Rust Manchester March Code Night**",
"Rust Trondheim",
"**Rust projects - show and tell in March**",
"Rust Paris",
"**Rust meetup #84**",
"Rust in Paris",
"**Rust in Paris**",
"Oxford ACCU/Rust Meetup.",
"**Rust/ACCU meetup.**",
"Utah Rust",
"**An Interpreter for Computability theory, Written the Hard Way**",
"San Diego Rust",
"**San Diego Rust March Meetup - Back in person!**",
"Boston Rust Meetup",
"**North End Rust Lunch, Mar 14**",
"San Francisco Rust Study Group",
"**Rust Hacking in Person**",
"Hacker Dojo",
"**RUST MEETUP at HACKER DOJO**",
"Music City Rust Developers",
"**Applied Rust - Building Rust Applictions**",
"Rust NYC",
"**Rust NYC: Social Interoperability - Rust, C++ and The Greater Good**",
"**Porter Square Rust Lunch, Mar 21**",
"Rust ATX",
"**Rust Lunch - Fareground**",
"**Rust NYC's Digital Asset Adoption Special**",
"Rust Atlanta",
"**Rust-Atl**",
"STL Rust",
"**SIUE Cruft Crawler with LLM**",
"Rust Brisbane",
"**Rust Brisbane Mar 2026**",
"Rust Melbourne",
"**TBD March Meetup**",
"Rust São Paulo Meetup",
"**Encontro do Rust-SP (migrado pro Lumma)**",
"calendar",
"Who's Hiring thread on r/rust",
"Manpacket on functional.cafe",
"Please submit quotes and vote for next week!",
"nellshamrell",
"llogiq",
"ericseppanen",
"extrawurst",
"U007D",
"mariannegoldin",
"bdillo",
"opeolluwa",
"bnchi",
"KannanPalani57",
"tzilist",
"The Rust Foundation",
"Discuss on r/rust",
"@kobzol"
],
"textContent": "Hello and welcome to another issue of _This Week in Rust_! Rust is a programming language empowering everyone to build reliable and efficient software. This is a weekly summary of its progress and community. Want something mentioned? Tag us at @thisweekinrust.bsky.social on Bluesky or @ThisWeekinRust on mastodon.social, or send us a pull request. Want to get involved? We love contributions.\n\n_This Week in Rust_ is openly developed on GitHub and archives can be viewed at this-week-in-rust.org. If you find any errors in this week's issue, please submit a PR.\n\nWant TWIR in your inbox? Subscribe here.\n\n## Updates from Rust Community\n\n### Official\n\n * Announcing Rust 1.94.0 | Rust Blog\n\n\n\n### Newsletters\n\n * 🦀 State of Rust Survey Findings\n\n\n\n### Project/Tooling Updates\n\n * Release 0.7.0 · uutils/coreutils\n * mdterm v1.0.0 - A terminal-based Markdown browser\n * The Anatomy of a 500ns Parser: Porting libphonenumber to Rust\n * mini-agent: A Rust AI Agent Framework\n * ClickHouse meets SeaORM: Arrow-powered data pipeline\n * Rustaceans.AI\n * Leptodon 1.0.0: UI toolkit for the Leptos WASM framework\n * Signing Rust Binaries Shouldn't Require Shell Scripts\n\n\n\n### Observations/Thoughts\n\n * symbolic derivatives and the rust rewrite of RE# | ian erik varatalu\n * The State of Allocators in 2026\n * series] [FORTRAN to Rust: part 1\n * The Cost of Indirection in Rust\n * Why SeaORM over JavaScript client database options?\n * Rust is slowly but surely eating PostgreSQL: Deep dive into Neon, ParadeDB, PgDog and more\n * What Happens When You Constrain an Event-Driven System to Three Primitives\n * My Rust dev setup in 2026\n * audio] [Netstack.FM episode 30 — uReq with Martin Algesten\n * Weighing up Zngur and CXX for Rust/C++ Interop\n\n\n\n### Rust Walkthroughs\n\n * ZK snarks for rust developer part 1/8\n * Get in Line (Part 2) - Vyukov's Queue and its specializations\n * How to stop fighting with coherence and start writing context-generic trait impls\n * Rewriting Our Database in Rust\n * OpenTelemetry for Rust Developers - The Complete Implementation Guide\n\n\n\n### Miscellaneous\n\n * Rust Shined Over Python for My CLI Tool - Smiling Dev Blog\n * Write small Rust scripts\n\n\n\n## Crate of the Week\n\nThis week's crate is sentencex, a fast sentence segmentation library.\n\nThanks to Santhosh Thottingal for the self-suggestion!\n\nPlease submit your suggestions and votes for next week!\n\n## Calls for Testing\n\nAn important step for RFC implementation is for people to experiment with the implementation and give feedback, especially before stabilization.\n\nIf you are a feature implementer and would like your RFC to appear in this list, add a `call-for-testing` label to your RFC along with a comment providing testing instructions and/or guidance on which aspect(s) of the feature need testing.\n\n_No calls for testing were issued this week byRust, Cargo, Rustup or Rust language RFCs._\n\nLet us know if you would like your feature to be tracked as a part of this list.\n\n## Call for Participation; projects and speakers\n\n### CFP - Projects\n\nAlways 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!\n\nSome of these tasks may also have mentors available, visit the task page for more information.\n\n * diesel-guard - REFRESH MATERIALIZED VIEW without CONCURRENTLY\n * diesel-guard - ADD CHECK CONSTRAINT without NOT VALID\n * diesel-guard - ADD FOREIGN KEY without NOT VALID\n * diesel-guard - no lock_timeout/statement_timeout before DDL\n\n\n\nIf you are a Rust project owner and are looking for contributors, please submit tasks here or through a PR to TWiR or by reaching out on Bluesky or Mastodon!\n\n### CFP - Events\n\nAre you a new or experienced speaker looking for a place to share something cool? This section highlights events that are being planned and are accepting submissions to join their event as a speaker.\n\n * **Rust India Conference 2026** | CFP open until 2026-03-14 | Bangalore, IN | 2026-04-18\n * **Oxidize Conference** | CFP open until 2026-03-23 | Berlin, Germany | 2026-09-14 - 2026-09-16\n * **EuroRust** | CFP open until 2026-04-27 | Barcelona, Spain | 2026-10-14 - 2026-10-17\n\n\n\nIf you are an event organizer hoping to expand the reach of your event, please submit a link to the website through a PR to TWiR or by reaching out on Bluesky or Mastodon!\n\n## Updates from the Rust Project\n\n483 pull requests were merged in the last week\n\n#### Compiler\n\n * enable `PassMode::Indirect { on_stack: true, .. }` tail call arguments\n\n\n\n#### Library\n\n * constify `Vec::{into, from}_raw_parts{_in|_alloc}`\n * implement `MaybeDangling` compiler support\n * stabilize `control_flow_ok`\n\n\n\n#### Cargo\n\n * `compile`: Turn warning summaries into errors also\n * `fix`: Switch from ad-hoc to structured warnings\n * `script`: surpress `unused_features` lint for embedded\n * `tests`: allow for 'could not' as well as couldn't in test output\n * add missing truncate when writing `.crate` files\n * ignore implicit std dependencies in `unused-crate-dependencies` lint\n * let git decide when to run gc\n * split `build-dir` lock into dedicated lock\n\n\n\n#### Clippy\n\n * add `manual_pop_if` lint\n * `doc_paragraphs_missing_punctuation`: Trim picture symbols\n * do not materialize snippets when it is not needed to\n * fix ICE in `match_same_arms`\n * fix ICE in `swap_binop()`\n * fix ICE when using the `min_generic_const_args` incomplete feature\n * fix `infinite_loop` wrong suggestion inside conditional branches\n * fix `redundant_closure` suggests wrongly when local is derefed to callable\n * fix `unnecessary_safety_comment` false positive on code blocks inside inner docs\n * fix semicolon-inside-block inside `try_blocks`\n * optimize `allow_unwrap_types` evaluation to eliminate performance regression\n\n\n\n#### Rust-Analyzer\n\n * do not re-query source roots per crate in analysis-stats\n * offer `destructure_struct_binding` on self param\n * when going to def on `?` on `Result` that goes through `From`, go to the `From` impl\n * add `has_pending` methods to `Incoming`/`Outgoing`/`ReqQueue` in `lsp_server`\n * `cfg_select` supports non token-tree tokens\n * align `is_rust()` with rustc by correcting constructor ABI in next solver\n * do not use PostAnalysis TypingMode for IDE method resolution\n * file watcher should watch directories recursively\n * fix wrong descend range for `add_missing_match_arms`\n * offer block `.let` in ref-expr in match arm\n\n\n\n### Rust Compiler Performance Triage\n\nAlmost no regressions this week, while there was a handful of performance improvements caused by the ongoing refactoring of the compiler query system. The largest one was from #153521.\n\nTriage done by **@kobzol**. Revision range: ddd36bd5..3945997a\n\n**Summary** :\n\n(instructions:u) | mean | range | count\n---|---|---|---\nRegressions ❌\n(primary) | 0.4% | [0.4%, 0.5%] | 3\nRegressions ❌\n(secondary) | 0.6% | [0.1%, 1.2%] | 8\nImprovements ✅\n(primary) | -0.9% | [-2.5%, -0.1%] | 110\nImprovements ✅\n(secondary) | -0.8% | [-2.7%, -0.1%] | 77\nAll ❌✅ (primary) | -0.9% | [-2.5%, 0.5%] | 113\n\n0 Regressions, 6 Improvements, 3 Mixed; 5 of them in rollups 31 artifact comparisons made in total\n\nFull report here.\n\n### Approved RFCs\n\nChanges to Rust follow the Rust RFC (request for comments) process. These are the RFCs that were approved for implementation this week:\n\n * _No RFCs were approved this week._\n\n\n\n### Final Comment Period\n\nEvery week, the team announces the 'final comment period' for RFCs and key PRs which are reaching a decision. Express your opinions now.\n\n#### Tracking Issues & PRs\n\n##### Rust\n\n * Remove `ATTRIBUTE_ORDER`\n\n\n\n_No Items entered Final Comment Period this week forRust RFCs, Cargo, Compiler Team (MCPs only), Language Team, Language Reference, Leadership Council or Unsafe Code Guidelines._\n\nLet us know if you would like your PRs, Tracking Issues or RFCs to be tracked as a part of this list.\n\n### New and Updated RFCs\n\n * RFC: Custom lint profiles\n\n\n\n## Upcoming Events\n\nRusty Events between 2026-03-11 - 2026-04-08 🦀\n\n### Virtual\n\n * 2026-03-11 | Virtual (Girona, ES) | Rust Girona\n * **Sessió setmanal de codificació / Weekly coding session**\n * 2026-03-12 | Virtual (Berlin, DE) | Rust Berlin\n * **Rust Hack and Learn**\n * 2026-03-17 | Virtual (Washington, DC, US) | Rust DC\n * **Mid-month Rustful**\n * 2026-03-18 | Hybrid (Vancouver, BC, CA) | Vancouver Rust\n * **Embedded Rust**\n * 2026-03-18 | Virtual (Cardiff, UK) | Rust and C++ Cardiff\n * **Hybrid event with Rust Dortmund!**\n * 2026-03-18 | Virtual (Girona, ES) | Rust Girona\n * **Sessió setmanal de codificació / Weekly coding session**\n * 2026-03-19 | Hybrid (Seattle, WA, US) | Seattle Rust User Group\n * **March, 2026 SRUG (Seattle Rust User Group) Meetup**\n * 2026-03-20 | Virtual | Packt Publishing Limited\n * **Rust Adoption, Safety, and Cloud with Francesco Ciulla**\n * 2026-03-24 | Virtual (Dallas, TX, US) | Dallas Rust User Meetup\n * **Fourth Tuesday**\n * 2026-03-24 | Virtual (London, UK) | Women in Rust\n * **Lunch & Learn: Crates, Tips & Tricks Lightning Talks - Bring your ideas!**\n * 2026-03-25 | Virtual (Girona, ES) | Rust Girona\n * **Rust Girona Hack & Learn 03 2026**\n * 2026-03-26 | Virtual (Berlin, DE) | Rust Berlin\n * **Rust Hack and Learn**\n * 2026-04-01 | Virtual (Girona, ES) | Rust Girona\n * **Sessió setmanal de codificació / Weekly coding session**\n * 2026-04-01 | Virtual (Indianapolis, IN, US) | Indy Rust\n * **Indy.rs - with Social Distancing**\n * 2026-04-02 | Virtual (Nürnberg, DE) | Rust Nuremberg\n * **Rust Nürnberg online**\n * 2026-04-04 | Virtual (Kampala, UG) | Rust Circle Meetup\n * **Rust Circle Meetup**\n\n\n\n### Asia\n\n * 2026-03-22 | Tel Aviv-yafo, IL | Rust 🦀 TLV\n * **In person Rust March 2026 at AWS in Tel Aviv**\n\n\n\n### Europe\n\n * 2026-03-11 | Amsterdam, NL | Rust Developers Amsterdam Group\n * **Meetup @ Instruqt**\n * 2026-03-11 | Frankfurt, DE | Rust Rhein-Main\n * **Writing a Python compiler in Rust**\n * 2026-03-12 | Bern, CH | Rust Bern\n * **2026 Rust Talks Bern #1 @bespinian**\n * 2026-03-12 | Geneva, CH | Post Tenebras Lab\n * **Rust Meetup Geneva**\n * 2026-03-18 | Dortmund, DE | Rust Dortmund\n * **Rust Dortmund Meetup - Intro to Embedded Rust - March**\n * 2026-03-19 - 2026-03-20 | Warsaw, PL | Rustikon\n * **Rustikon Conference**\n * 2026-03-23 | Augsburg, DE | Rust Meetup Augsburg\n * **Rust Meetup #18** : Ludwig Weinzierl - Bevy: Spielentwicklung mit Rust\n * 2026-03-24 | Aarhus, DK | Rust Aarhus\n * **Hack Night - Advent of Code**\n * 2026-03-24 | Manchester, UK | Rust Manchester\n * **Rust Manchester March Code Night**\n * 2026-03-24 | Trondheim, NO | Rust Trondheim\n * **Rust projects - show and tell in March**\n * 2026-03-26 | Paris, FR | Rust Paris\n * **Rust meetup #84**\n * 2026-03-27 | Paris, FR | Rust in Paris\n * **Rust in Paris**\n * 2026-04-01 | Oxford, UK | Oxford ACCU/Rust Meetup.\n * **Rust/ACCU meetup.**\n\n\n\n### North America\n\n * 2026-03-12 | Lehi, UT, US | Utah Rust\n * **An Interpreter for Computability theory, Written the Hard Way**\n * 2026-03-12 | San Diego, CA, US | San Diego Rust\n * **San Diego Rust March Meetup - Back in person!**\n * 2026-03-14 | Boston, MA, US | Boston Rust Meetup\n * **North End Rust Lunch, Mar 14**\n * 2026-03-17 | San Francisco, CA, US | San Francisco Rust Study Group\n * **Rust Hacking in Person**\n * 2026-03-18 | Hybrid (Vancouver, BC, CA) | Vancouver Rust\n * **Embedded Rust**\n * 2026-03-19 | Hybrid (Seattle, WA, US) | Seattle Rust User Group\n * **March, 2026 SRUG (Seattle Rust User Group) Meetup**\n * 2026-03-19 | Mountain View, CA, US | Hacker Dojo\n * **RUST MEETUP at HACKER DOJO**\n * 2026-03-19 | Nashville, TN, US | Music City Rust Developers\n * **Applied Rust - Building Rust Applictions**\n * 2026-03-19 | New York, NY, US | Rust NYC\n * **Rust NYC: Social Interoperability - Rust, C++ and The Greater Good**\n * 2026-03-21 | Boston, MA, US | Boston Rust Meetup\n * **Porter Square Rust Lunch, Mar 21**\n * 2026-03-25 | Austin, TX, US | Rust ATX\n * **Rust Lunch - Fareground**\n * 2026-03-25 | New York, NY, US | Rust NYC\n * **Rust NYC's Digital Asset Adoption Special**\n * 2026-03-26 | Atlanta, GA, US | Rust Atlanta\n * **Rust-Atl**\n * 2026-04-02 | Saint Louis, MO, US | STL Rust\n * **SIUE Cruft Crawler with LLM**\n\n\n\n### Oceania\n\n * 2026-03-12 | Brisbane City, AU | Rust Brisbane\n * **Rust Brisbane Mar 2026**\n * 2026-03-26 | Melbourne, AU | Rust Melbourne\n * **TBD March Meetup**\n\n\n\n### South America\n\n * 2026-03-21 | São Paulo, BR | Rust São Paulo Meetup\n * **Encontro do Rust-SP (migrado pro Lumma)**\n\n\n\nIf you are running a Rust event please add it to the calendar to get it mentioned here. Please remember to add a link to the event too. Email the Rust Community Team for access.\n\n## Jobs\n\nPlease see the latest Who's Hiring thread on r/rust\n\n# Quote of the Week\n\n> Happy \"Clippy, you are very helpful\" day for those who celebrates!\n\n– Manpacket on functional.cafe\n\nDespite a lamentable lack of suggestions, llogiq is exceedingly pleased with his choice.\n\nPlease submit quotes and vote for next week!\n\nThis Week in Rust is edited by:\n\n * nellshamrell\n * llogiq\n * ericseppanen\n * extrawurst\n * U007D\n * mariannegoldin\n * bdillo\n * opeolluwa\n * bnchi\n * KannanPalani57\n * tzilist\n\n\n\n_Email list hosting is sponsored byThe Rust Foundation_\n\nDiscuss on r/rust",
"title": "This Week in Rust 642"
}