Rust Programming News | Prism Hobbies

Cache-line contention makes RwLock five times slower than Mutex

Redstone's author found that on commercial hardware an RwLock made a read-heavy Tensor Cache about 5× slower than a Mutex due to cache-line ping-pong and atomic contention.

Sam Ortega•3 min read•10:25 AM

Read Full Article →

More News

Updates

Ladybird Browser Adopts Rust to Replace C++ with AI Help

Ladybird's 2026-02-23 post says the project will adopt Rust as C++'s successor, and Andreas Kling used Claude Code and Codex to produce about 25,000 lines of Rust for LibJS.

Jamie Taylor3m read

Analysis

ClickHouse Rust Migration Promised Security but Brussels Developers Reveal Messy Challenges

ClickHouse's move to replace C++ with Rust promised stronger security, but developers in Brussels report on February 27, 2026 that the migration has exposed unexpected issues and messy complexity.

Jamie Taylor1m read

Updates

Salvo list_html XSS vulnerabilities CVE-2026-22256 and CVE-2026-22257 fixed in 0.88.1

Salvo patched reflected XSS in its directory listing (list_html); CVE-2026-22256 and an Isomer-listed CVE-2026-22257 are fixed in salvo 0.88.1 - update recommended.

Jamie Taylor2m read

Releases

maturin 1.12.4 improves Python wheel docs and Android tag detection

maturin 1.12.4 ships today with improved docs and config handling, plus fixes that correct Android platform tag detection for Python wheels built from Rust.

Sam Ortega2m read

Updates

Rust-based sudo to show asterisks by default, exposing password length

Rust-based sudo (sudo-rs) will show asterisks by default when typing passwords, revealing password length; the change is slated for Ubuntu 26.04 in April and has sparked debate.

Jamie Taylor2m read

Updates

CVE-2026-27195 exposes panic in Wasmtime component model async implementation

Wasmtime received a medium-severity advisory, CVE-2026-27195, after a panic was reported in its component-model async implementation; the advisory was published February 25, 2026.

Jamie Taylor2m read

Updates

Rust compiler team launches Debugging Survey 2026 to collect cross-platform feedback

The Rust compiler team opened the Rust Debugging Survey 2026 on February 23, asking developers for five-minute anonymous reports on cross-platform debugger pain points; submissions close March 13, 2026.

Nina Kowalski2m read

Updates

Multiple Rust crates removed from crates.io after malicious code flags

In the last week (late Feb 2026) multiple crates including polymarkets-rs-clob-client, clob-sdk, tracings, and tracing were removed from crates.io after being flagged for malicious content or for transitively pulling in malicious code.

Nina Kowalski4m read

Updates

Leptos-use v0.18.1 fails to compile with new wasm-bindgen/web-sys; PR created

A compatibility regression in leptos-use v0.18.1 caused compilation failures when paired with the newly released wasm-bindgen and web-sys packages; a test-fix branch and pull request were created to address it.

Jamie Taylor2m read

Updates

NVD Warns of CVE-2026-27822 Stored XSS in RustFS Management Console

NVD published an advisory on Feb 25 for CVE-2026-27822, a Stored Cross-Site Scripting vulnerability affecting the RustFS management console in the distributed object-storage system implemented in Rust.

Sam Ortega1m read

Updates

Misspecified asm! operand types in opt-in ARMv8 backend caused unsoundness

keccak disclosed a low-severity unsoundness today in its opt-in ARMv8 assembly backend after an asm! block misspecified operand types for operands used as pointers and then mutated.

Jamie Taylor2m read

News

llama2.rs Pure-Rust LLaMA Decoder Gains Traction with 1.1k Stars, CPU Performance

srush/llama2.rs shows roughly 1.1k stars and 167 commits as of late Feb 2026, with README-claimed CPU speeds of 1 tok/s on 70B and 9 tok/s on 7B Llama2 on an Intel i9.

Jamie Taylor2m read

Updates

Linux 7.0 Merge Changes Prep Kernel for Rust 1.95, Signal Long-Term Commitment

Merge-window commits for Linux 7.0 on Feb 21, 2026 prepared kernel trees for Rust 1.95 and signaled a shift from an experimental phase to longer-term Rust support.

Jamie Taylor2m read

Releases

cargo-release 1.1.1 fixes packaging and pre-built binary CI upload inconsistencies

cargo-release 1.1.1, published by crate-ci/cargo-release on Feb 24, 2026, patches packaging and pre-built binary upload and CI inconsistencies; upgrade to 1.1.1 and re-run your pipelines.

Jamie Taylor1m read

Community

Rust Foundation Heads to MWC Talent Arena for Workshops and XPro Presentation

rustfoundation announced on Feb 25 that Rebecca Rumbul will speak on the XPro stage at Talent Arena and Lawrence Freeman will run two workshops on March 4, with the first Credly workshop badges issued.

Sam Ortega2m read

Updates

JetBrains updates RustRover to 2025.3.4 with editing and configuration improvements

rustrover 2025.3.4 adds a for_each ↔ for intention, new module visibility options, improved Cargo.toml autolib validation and fixes for bytemuck::Zeroable references.

Jamie Taylor3m read

Updates

Wasmtime issues multiple advisories fixing panics and WASI resource exhaustion

Wasmtime published GitHub advisories (GHSA-852m-cvvp-9p4w) and CVEs CVE-2026-27204 and CVE-2026-27572 fixing guest-controlled resource exhaustion and a wasi:http/types.fields panic; patches in 24.0.6, 36.0.6, 40.0.4, 41.0.4, 42.0.0.

Jamie Taylor2m read

Releases

SurrealDB 3.0 GA Built in Rust Raises $23M for AI Memory

SurrealDB 3.0, built in Rust and released to GA on February 17, 2026, shipped AI-focused features and raised a reported $23M, bringing total funding to $44M as it targets agent memory.

Nina Kowalski2m read

Updates

Cargo team details shipped features, merges, and priorities in 1.94

Cargo published a development-cycle report on Feb 18, 2026 that lays out what it shipped, the notable merges it merged, and the active priorities for the 1.94 cycle.

Nina Kowalski2m read

Analysis

JetBrains Traces Async Rust Evolution from Tokio to High-Level Applications

JetBrains’ Rust team published a Feb 17 long-form recap that maps async Rust’s shift from Tokio runtime work to building high-level applications, summarizing a recorded panel the company hosted.

Sam Ortega2m read

Updates

Integration tests running cargo clean fail intermittently with rust-analyzer in VS Code

Integration tests that run cargo clean fail intermittently in VS Code when rust-analyzer is enabled; running cargo clean can clear errors temporarily but issues reappear, per rust-analyzer issue #21656.

Jamie Taylor3m read

Releases

web-sys 0.3.88 Released with Updated Web API Bindings for Rust and Wasm

web-sys version 0.3.88 was published on February 21, 2026, updating the autogenerated Rust bindings for Web APIs used with wasm-bindgen and now appears in public package indexes.

Jamie Taylor2m read

Updates

GGML.ai joins Hugging Face, bringing GGML projects like llama.cpp, whisper.cpp

The ggml organization announced it joined Hugging Face on February 20, 2026, bringing flagship local-LLM projects including llama.cpp, whisper.cpp, and LlamaBarn into Hugging Face’s fold.

Jamie Taylor2m read

Releases

rust-analyzer v0.3.2795 adds const-generic parsing, call-hierarchy, reference-search improvements

rust-analyzer v0.3.2795 (Changelog #315) adds basic const-generic parsing, initial call-hierarchy, and sharper reference-search read/write classification.

Jamie Taylor2m read

Updates

Rust Project Announces GSoC 2026 Participation, Applications Open March 16 to 31

Rust announced participation in Google Summer of Code on Feb 19, 2026; proposal submissions open March 16 and close March 31 at 18:00 UTC, with mentors available now on the #gsoc Zulip stream.

Nina Kowalski2m read

Updates

wasmRuntime refreshes comparative WebAssembly runtime hub for Rust developers

WasmRuntime refreshed its comparative hub on Feb 13, 2026, updating cold-start, memory-usage, Component Model, and WasmGC benchmarks across Wasmtime, Wasmer, WasmEdge, Wazero, and Spin.

Jamie Taylor2m read

Updates

Rust Leadership Council opens semi-annual selection; reps join week of March 27

Leadership Council asks top-level teams to confirm reps by March 20; new members will join Council meetings the week of March 27, 2026.

Jamie Taylor2m read

Updates

Rust Project details 2026 goals progress, program manager hiring, RFC timeline

The Rust Project said the Goals initiative is active, with community submissions and PRs live and RFC and team-review timelines set as program manager hiring ramps up.

Jamie Taylor2m read

Releases

Actix Web v4.13.0 boosts HTTP/2 upload throughput, raises MSRV to 1.88

Actix Web v4.13.0 raises the MSRV to Rust 1.88 and targets higher HTTP/2 upload throughput by increasing default flow-control windows and adding h2 tuning APIs.

Nina Kowalski3m read