Run each Rust test in its own process with cargo-nextest
Switch a Rust test suite to cargo-nextest so each test runs in its own process, flaky tests can retry, and slow or hung tests are flagged and stopped.
Wildness 1/5 · Tamed
Topic · 104 stories · page 2 of 5
rust
104 stories tagged rust on AI Tamer, newest first.
Error types for a Rust library, and a different answer for a binary
A library's error type is public API that callers match on. A binary mostly needs a clear message with context. thiserror and anyhow fit those two jobs.
Wildness 1/5 · TamedCargo starts one compiler per CPU, and memory may run out first
Cargo's default job count is the number of logical CPUs. On a machine with many cores and several builds at once, memory becomes the limit long before CPU. Three ways to set the job count, and how to pick one.
Wildness 2/5 · Mostly tamedClippy lints worth turning on in a small Rust tool
Clippy's defaults catch a lot, and its stricter groups catch more. Which groups to enable, three individual lints worth adding, and how to set them once in Cargo.toml for the whole project.
Wildness 1/5 · TamedBlocking code inside async Rust
One blocking call in a Tokio task can stall every other task on that thread. How to recognise blocking work, when spawn_blocking is the answer, and when a dedicated thread is the better one.
Wildness 1/5 · TamedBenchmarking a change without fooling yourself
"It's faster now" is a claim, and one timed run can't support it. Warm-up, repeated runs, outliers, noise thresholds and what to write down, using hyperfine and Criterion.rs as worked examples.
Wildness 2/5 · Mostly tamedRiver Inference lists two open models at 20% under the labs' published rates
River Inference is serving DeepSeek V4.1 Flash and GLM 5.3 Flash. Its public card is 20% under DeepSeek's off-peak rates and Z.ai's list prices. A second homepage table is much higher.
Wildness 3/5 · Partly tameduzu, Mirai's Rust engine for Apple Silicon, goes past the one-token-per-pass ceiling
Mirai's open-source Rust engine uzu uses tree speculative decoding tuned for M5 Macs. A creator run shows 92 tokens/s on a 9B model versus 22 for llama.cpp, with caveats on quants, chips and workload.
Wildness 4/5 · Still wildNVIDIA's Boro brings Sashiko-style AI kernel review to your local tree
NVIDIA's open-source Boro is a Rust CLI for AI-assisted Linux kernel review, backports and build-boot-test runs before a series goes public. Its LPC 2026 talk asks what could fold into Sashiko.
Wildness 3/5 · Partly tamedThe Deno team joins Cloudflare; Deno Deploy has six months left
Ryan Dahl says the whole Deno team is joining Cloudflare to merge celld into workerd. The Deno runtime gets one more year of fixes, Deno Deploy shuts down in six months, and JSR keeps running.
Wildness 2/5 · Mostly tamedA safe-Rust WinQuake port says Claude Code agents wrote it
quake-srp is a Rust port of id Software's WinQuake with unsafe code forbidden. The README says Claude Code agents wrote it and checked frames against id's C. It is not an official Quake release.
Wildness 4/5 · Still wildCatching a Panic Does Not Restore an Invariant
Rust can catch an unwinding plugin panic, but the host must still decide whether captured state remains valid. UnwindSafe is a warning at that boundary, not automatic rollback.
Wildness 1/5 · TamedPhotoCraft and the Crafting Apps: a Rust creative suite built with Claude
ArtCraft's PhotoCraft, LightCraft, FilmCraft and other Crafting Apps are open-source Rust reimplementations of familiar creative tools. PhotoCraft is early alpha, with installers, an MCP server and parity caveats.
Wildness 4/5 · Still wildA Compile-Fail Example Can Pass for the Wrong Error
Rust doctests can demonstrate forbidden API use, but compile_fail only checks that compilation fails. A misspelled import can make the lesson appear tested.
Wildness 1/5 · TamedA Build Script Must Tell Cargo What Can Change Its Output
Generated Rust bindings can go stale when a build script watches too few inputs. Declare the files and external environment variables that affect generation, and keep diagnostics separate from Cargo directives.
Wildness 1/5 · TamedCargo Can Prefer Dependencies Compatible With Your Rust Version
Cargo's Rust-version-aware resolver can favor dependency releases that fit a project's minimum compiler, but its fallback policy and shared lockfile leave real compatibility checks to the build matrix.
Wildness 1/5 · TamedA Workspace Dependency Is Inherited Explicitly
Cargo workspace.dependencies centralizes dependency declarations, but each member opts in through its own manifest. See how that keeps an AI application's crates honest about what they use.
Wildness 1/5 · TamedChoose the Arithmetic Failure You Want to Handle
Checked, saturating and wrapping arithmetic encode different overflow policies. Pick one for the meaning of a counter, image dimension or protocol sequence.
Wildness 1/5 · TamedAn Iterator Can Resume After Returning None
Rust iterators can yield an item after None. Learn when fuse() makes exhaustion permanent, and why a temporary gap in a live stream needs a different signal.
Wildness 1/5 · TamedAn Ordered Map Can Answer a Range Query Directly
Rust's BTreeMap can iterate directly over a chosen key interval. Its bound rules and panic cases shape safe time-window queries.
Wildness 1/5 · TamedThe Entry API Keeps a Map Update in One Lookup
Use Rust's HashMap entry view to update per-key counters without splitting the vacant and occupied cases across separate map accesses.
Wildness 1/5 · TamedCollecting Results Stops at the First Error
Collecting an iterator of Result values into Result<Vec<T>, E> stops on the first Err. Choose that behavior for fail-fast loading, or collect errors explicitly for a full report.
Wildness 1/5 · TamedTranspose Moves an Error Outside an Optional Value
An optional configuration field can be absent, valid or malformed. Option::transpose turns that three-way outcome into Result<Option<T>, E> without hiding parse errors.
Wildness 1/5 · Tamedtsc-rs is Theo Browne's early Rust port of the TypeScript 7 compiler
Theo Browne says tsc-rs 0.1.0, a Rust port of Microsoft's Go TypeScript compiler, is an early release he has not read. The README's costs, tests, and speeds are his account.
Wildness 3/5 · Partly tamed
