#binary search is the bane of my existence
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This Week in Rust 530
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 on Twitter or @ThisWeekinRust on mastodon.social, or send us a pull request. Want to get involved? We love contributions.
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.
Updates from Rust Community
Project/Tooling Updates
esp-rs quarterly planning: Q1 2024
Meilisearch 1.6 - AI search & 2x faster indexing
capnproto-rust: 0.19 - ergonomic setters and faster reflection
hyper - 2023 in review
Observations/Thoughts
A universal lowering strategy for control effects in Rust
Passing nothing is surprisingly difficult
The memory remains: Permanent memory with systemd and a Rust allocator
Higlights of 2023 for cargo-semver-checks
The bane of my existence: Supporting both async and sync code in Rust
A Guide to Rust ORMs in 2024
Semantic search powered by WASM and WebGPU
Embassy on ESP: UART Echo
Rust Walkthroughs
Adventures in Binary Serialisation
Creating 2 'Simple' Allocators
Rust macros and Lambda boilerplate
Let's make an information display in rust Part 2: The Frontend
Miscellaneous
Clap - subcommands for command line applications in Rust
SurrealDB in-memory with SQL demo in Rust
Multi-counter with embedded SurrealDB database
Xilem 2024 plans
Rustaceans, say goodbye to lifetime errors: announcing nolife 0.3
Auto-generating API service using Rust, to TypeScript & Dart
From the rust community on Reddit: Rust in Aviation
[audio] Apollo - Rust in Production Podcast
[audio] Prossimo with Josh Aas
Crate of the Week
This week's crate is fish, a friendly interactive shell that used to be written in C++, but was recently rewritten in Rust (though admittedly they'll have to do some work until it hits your distro's repos).
Despite a lamentable lack of suggestions, llogiq is reasonably satisfied with his choice.
Please submit your suggestions and votes for next week!
Call for Participation; projects and speakers
CFP - Projects
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.
ZeroCopy - Use cargo-semver-checks to make sure derive feature doesn't change API surface 2
Ockam - remove_address_record function is called two times per Address during Processor shutdown
Ockam - Command - refactor to use typed interfaces to implement commands for kafka services
Ockam - Library - Validate CBOR structs according to the cddl schema for nodes/models/services
Hyperswitch - [FEATURE]: Make cache configuration configurable at runtime
Hyperswitch - [FEATURE]: Implement Code cov for local system using makefile
Hyperswitch - [FEATURE]: Setup code coverage for local tests & CI
Hyperswitch - [FEATURE]: Add domain type for client secret
Hyperswitch - [FEATURE]: Have get_required_value to use ValidationError in OptionExt
Fluvio - connector: fluvio-http-source, add an option to read data from a websocket
Fluvio - MQTT Connector: Prefix auto generated Client ID to prevent connection drops
If you are a Rust project owner and are looking for contributors, please submit tasks here.
Updates from the Rust Project
418 pull requests were merged in the last week
GNU/Hurd: unconditionally use inline stack probes
rustc_codegen_ssa: Enforce rustc::potential_query_instability lint
~const trait and projection bounds do not imply their non-const counterparts
add assume into NonZeroIntX::get
add explicit none() value variant in check-cfg
add more information to visit_projection_elem
allow ~const on associated type bounds again
avoid silencing relevant follow-up errors
check rust lints when an unknown lint is detected
coverage: add enums to accommodate other kinds of coverage mappings
coverage: simplify building the coverage graph with CoverageSuccessors
delegation implementation: step 1
disallow reference to static mut and adding static_mut_ref lint
don't ICE when noting GAT bounds in report_no_match_method_error
don't reexport atomic::ordering via rustc_data_structures, use std import
exclude well known names from showing a suggestion in check-cfg
exhaustiveness: abort on type error
exhaustiveness: track overlapping ranges precisely
exhaustiveness: use an Option instead of allocating fictitious patterns
fix ICE when suggesting dereferencing binop operands
fix all_trait* methods to return all traits available in StableMIR
fix allow_internal_unstable for (min_)specialization
fix is_global special address handling
fix unused_parens issue when cast is followed LT
fix an ICE that occurs after an error has already been reported
new flag to emit all the delayed bugs as errors (add -Zeagerly-emit-delayed-bugs)
making User<T> and User<[T]> Send
merge dead bb pruning and unreachable bb deduplication
never patterns: Check bindings wrt never patterns
pass LLVM error message back to pass wrapper
register even erroneous impls
remove -Zdont-buffer-diagnostics
stop mentioning internal lang items in no_std binary errors
store the segment name when resolution fails
suggest upgrading compiler for gated features
suggest quoting unquoted idents in attrs
support async recursive calls (as long as they have indirection)
taint _ placeholder types in trait impl method signatures
unify query canonicalization mode
remove a large amount of leb128-coded integers
varargs support for system ABI
stabilize mutex_unpoison feature
A more efficient slice comparison implementation for T: !BytewiseEq
tune the inlinability of unwrap
cargo metadata: Stabilize id format as PackageIDSpec
cargo resolver: do not panic when sorting empty summaries
cargo: add guidance on setting homepage in manifest
cargo: add unstable --output-format option to cargo rustdoc
cargo: crates-io: set Content-Type: application/json only for requests with a body payload
cargo: add rustc style errors for manifest parsing
cargo: only inherit workspace package table if the new package is a member
cargo: implementation of shallow libgit2 fetches behind an unstable flag
cargo: introduce -Zprecise-pre-release unstable flag
cargo: strip debuginfo when debuginfo is not requested
rustdoc-search: reuse individual types in function signatures
clippy: from_over_into: suggest a correct conversion to ()
clippy: useless_asref: check that the clone receiver is the parameter
clippy: correctly suggest std or core path depending if this is a no_std crate
clippy: extend useless_asref lint on map(clone)
clippy: fix false positive in PartialEq check in unconditional_recursion lint
clippy: fix suggestion for map_clone lint on types implementing Copy
clippy: make HirEqInterExpr::eq_block take comments into account while checking if two blocks are equal
rust-analyzer: add notable_trait predicate to CompletionRelevance
rust-analyzer: assist to merge nested if
rust-analyzer: acknowledge pub(crate) imports in import suggestions
rust-analyzer: differentiate between vfs config load and file changed events
rust-analyzer: fix ast::Path::segments implementation
rust-analyzer: fix incorrect parsing error on method call on range
rust-analyzer: fix nested includes resolving from the wrong base file
rust-analyzer: fix rust-analyzer-proc-macro-srv failing to spawn on windows
rust-analyzer: preserve comments for extracted block expression in 'extract_function'
rust-analyzer: remove sysroot-abi feature flag from proc-macro-test
rust-analyzer: replace SourceRootCrates hashset output with slice for deterministic order
rust-analyzer: resolve panic in generate_delegate_methods
Rust Compiler Performance Triage
This week had some small regressions that did not warrant further investigation, several of which were dismissed as being noise/blips in the data. There were also a number of gains. (Don't get exicited about that 20.6% improvement, its an measurement artifact from a temporary blip in the PR that immediately preceded this week's triage.)
Triage done by @pnkfelix. Revision range: 76101eec..f9c2421a
3 Regressions, 5 Improvements, 5 Mixed; 3 of them in rollups 55 artifact comparisons made in total
Full report here
Approved RFCs
Changes to Rust follow the Rust RFC (request for comments) process. These are the RFCs that were approved for implementation this week:
RFC: Precise Pre-release cargo update
Add RFC combining Infra and Release teams
Final Comment Period
Every week, the team announces the 'final comment period' for RFCs and key PRs which are reaching a decision. Express your opinions now.
RFCs
[disposition: merge] Avoid non-local definitions in functions
Tracking Issues & PRs
[disposition: merge] Stabilize single-field offset_of
[disposition: merge] Undeprecate lint unstable_features and make use of it in the compiler
[disposition: close] Fix non_camel_case_types for screaming single-words
Language Reference
No Language Reference RFCs entered Final Comment Period this week.
Unsafe Code Guidelines
No Unsafe Code Guideline RFCs entered Final Comment Period this week.
New and Updated RFCs
RFC: Out-of-tree test suite
Call for Testing
An important step for RFC implementation is for people to experiment with the implementation and give feedback, especially before stabilization. The following RFCs would benefit from user testing before moving forward:
No RFCs issued a call for testing this week.
If you are a feature implementer and would like your RFC to appear on the above list, add the new 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.
Upcoming Events
Rusty Events between 2024-01-17 - 2024-02-14 🦀
Virtual
2024-01-17 | Virtual (Vancouver, BC, CA) | Vancouver Rust
Rust Study/Hack/Hang-out
2024-01-23 | Virtual (Halifax, NS, CA) | Rust Halifax
Rust&Tell - Halifax
2024-01-24 | Virtual (Berlin, DE) | WeAreDevelopers Community
WeAreDevelopers LIVE - Rust Day
2024-01-25 | Virtual (Charlottesville, NC, US) | Charlottesville Rust Meetup
Crafting Interpreters in Rust Collaboratively
2024-01-25 | Virtual (Mexico City, DF, MX) | Rust MX
Iniciando 2024 con Rust
2024-01-28 | Virtual (Wrocław, PL) | Stacja IT Wrocław
Wprowadzenie do języka Rust
2024-01-30 | Virtual | Bevy Game Development
Bevy Meetup #1
2024-01-30 | Virtual (Buffalo, NY, US) | Buffalo Rust User Group
Buffalo Rust User Group
2024-01-30 | Virtual (Dallas, TX, US) | Dallas Rust
Last Tuesday
2024-01-31 | Virtual (Cardiff, UK) | Rust and C++ Cardiff
Rust for Rustaceans Book Club launch!
2024-02-01 | Virtual + In Person (Barcelona, ES) | BcnRust
12th BcnRust Meetup - Stream
2024-02-01 | Virtual (Berlin, DE) | OpenTechSchool Berlin + Rust Berlin
Rust Hack n Learn | Mirror: Rust Hack n Learn
2024-02-03 | Virtual + In-person (Brussels, BE) | FOSDEM 2024
FOSDEM Conference: Rust devroom - talks
2024-02-03 | Virtual (Kampala, UG) | Rust Circle
Rust Circle Meetup
2024-02-04 | Virtual | Rust Maven
Web development with Rocket - In English
2024-02-07 | Virtual (Indianapolis, IN, US) | Indy Rust
Indy.rs - with Social Distancing
2024-02-08 | Virtual (Charlottesville, NC, US) | Charlottesville Rust Meetup
Crafting Interpreters in Rust Collaboratively
2024-02-08 | Virtual (Nürnberg, DE) | Rust Nüremberg
Rust Nürnberg online
2024-02-10 | Virtual (Wrocław, PL) | Stacja IT Wrocław
Rust – budowanie narzędzi działających w linii komend
2024-02-13 | Virtual (Dallas, TX, US) | Dallas Rust
Second Tuesday
Europe
2024-01-17 | Girona, ES | Rust Girona
Que és Rust i els seus beneficis / What's Rust and its advantages
2024-01-17 | Praha / Prague, CZ | Rust Prague
Rust Meetup Reloaded 2024
2024-01-17 | Zurich, CH | Rust Zurich
How to Community - January Meetup
2024-01-23 | Aarhus, DK | Rust Aarhus
Hack and Learn
2024-01-23 | Paris, FR | Rust Paris
Paris Rust Meetup #64
2024-01-24 | Zagreb, HR | impl Zagreb for Rust
Rust Meetup 2024/01: WebGPU intro using Rust
2024-01-25 | Augsburg, DE | Rust Meetup Augsburg
Augsburg Rust Meetup #5: Async Part2 and Async in action
2024-01-25 | Vienna, AT | Rust Vienna
Rust Vienna Meetup - January - Blockchains and Data Pipelines
2024-02-01 | Hybrid (Barcelona, ES) | BcnRust
12th BcnRust Meetup
2024-02-03 | Brussels, BE | FOSDEM '24
FOSDEM '24 Conference: Rust devroom - talks | Rust Aarhus FOSDEM Meetup
2024-02-06 | Bremen, DE | Rust Meetup Bremen
Rust Meetup Bremen [1]
2024-02-07 | London, UK | Rust London User Group
Rust for the Web — Mainmatter x Shuttle Takeover
2024-02-08 | Bern, CH | Rust Bern
Rust Bern Meetup #1 2024 🦀
North America
2024-01-17 | Chicago, IL, US | Deep Dish Rust
Rust Happy Hour
2024-01-18 | Seattle, WA, US | Seattle Rust User Group
Seattle Rust User Group Meetup
2024-01-22 | Boston, MA, US | Boston Rust Meetup
North End Rust Lunch
2024-01-24 | Austin, TX, US | Rust ATX
Rust Lunch - Fareground
2024-01-27-28 | Calgary, AB, CA | Rust Calgary
Harnessing Rust for Real-World Problems hackathon: Day 1
Harnessing Rust for Real-World Problems hackathon: Day 2
2024-01-30 | Cambridge, MA, US | Boston Rust Meetup
Harvard Square Rust Lunch
2024-02-07 | Brookline, MA, US | Boston Rust Meetup
Coolidge Corner Brookline Rust Lunch, Feb 7
2024-02-12 | Minneapolis, MN, US | Minneapolis Rust Meetup
Minneapolis Rust: Open Source Contrib Hackathon & Happy Hour
2024-02-13 | New York, NY, US | Rust NYC
Rust NYC Monthly Mixer
2024-02-13 | Seattle, WA, US | Cap Hill Rust Coding/Hacking/Learning
Rusty Coding/Hacking/Learning Night
Oceania
2024-02-06 | Perth, WA, AU | Perth Rust Meetup Group
Rust Feb 2024 Meetup
If 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.
Jobs
Please see the latest Who's Hiring thread on r/rust
Quote of the Week
Congrats to the #Rustlang and #Rust-for-#Linux community: the #LinuxKernel now contains the first useful thing built using Rust!
– Thorsten Leemhuis on FOSStodon
As with the crate of the week, this week saw a total lack of suggestions, so llogiq would like to offer you this piece of good news from the Linux side of things.
Please submit quotes and vote for next week!
This Week in Rust is edited by: nellshamrell, llogiq, cdmistman, ericseppanen, extrawurst, andrewpollack, U007D, kolharsam, joelmarcey, mariannegoldin, bennyvasquez.
Email list hosting is sponsored by The Rust Foundation
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