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## Crate of the Week

<!-- COTW goes here -->
This week's crate is [microflow](https://github.com/matteocarnelos/microflow-rs), a robust and efficient TinyML inference engine for embedded systems.

Thanks to [matteocarnelos](https://users.rust-lang.org/t/crate-of-the-week/2704/1289) for the self-suggestion!

[Please submit your suggestions and votes for next week][submit_crate]!

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## Updates from the Rust Project

<!-- Rust updates go here -->
466 pull requests were [merged in the last week][merged]

[merged]: https://github.com/search?q=is%3Apr+org%3Arust-lang+is%3Amerged+merged%3A2024-02-06..2024-02-13

* [add armv8r-none-eabihf target for the Cortex-R52](https://github.com/rust-lang/rust/pull/110482)
* [add lahfsahf and prfchw target feature](https://github.com/rust-lang/rust/pull/120965)
* [`check_consts`: fix duplicate errors, make importance consistent](https://github.com/rust-lang/rust/pull/120933)
* [`interpret/write_discriminant`: when encoding niched variant, ensure the stored value matches](https://github.com/rust-lang/rust/pull/120882)
* [`large_assignments`: Allow moves into functions](https://github.com/rust-lang/rust/pull/120773)
* [`pattern_analysis`: gather up place-relevant info](https://github.com/rust-lang/rust/pull/120633)
* [`pattern_analysis`: track usefulness without interior mutability](https://github.com/rust-lang/rust/pull/120324)
* [account for non-overlapping unmet trait bounds in suggestion](https://github.com/rust-lang/rust/pull/120507)
* [account for unbounded type param receiver in suggestions](https://github.com/rust-lang/rust/pull/120396)
* [add support for custom JSON targets when using build-std](https://github.com/rust-lang/rust/pull/120232)
* [add unstable `-Z direct-access-external-data` cmdline flag for `rustc`](https://github.com/rust-lang/rust/pull/119162)
* [allow restricted trait impls under `#[allow_internal_unstable(min_specialization)]`](https://github.com/rust-lang/rust/pull/120870)
* [always check the result of `pthread_mutex_lock`](https://github.com/rust-lang/rust/pull/120238)
* [avoid ICE in drop recursion check in case of invalid drop impls](https://github.com/rust-lang/rust/pull/120801)
* [avoid a collection and iteration on empty passes](https://github.com/rust-lang/rust/pull/120853)
* [avoid accessing the HIR in the happy path of `coherent_trait`](https://github.com/rust-lang/rust/pull/120835)
* [bail out of drop elaboration when encountering error types](https://github.com/rust-lang/rust/pull/120802)
* [build DebugInfo for async closures](https://github.com/rust-lang/rust/pull/120844)
* [check that the ABI of the instance we are inlining is correct](https://github.com/rust-lang/rust/pull/120944)
* [clean inlined type alias with correct param-env](https://github.com/rust-lang/rust/pull/120956)
* [continue to borrowck even if there were previous errors](https://github.com/rust-lang/rust/pull/120550)
* [coverage: split out counter increment sites from BCB node/edge counters](https://github.com/rust-lang/rust/pull/120564)
* [create `try_new` function for ThinBox](https://github.com/rust-lang/rust/pull/110483)
* [deduplicate `tcx.instance_mir(instance)` calls in `try_instance_mir`](https://github.com/rust-lang/rust/pull/120778)
* [don't expect early-bound region to be local when reporting errors in RPITIT well-formedness](https://github.com/rust-lang/rust/pull/120707)
* [don't skip coercions for types with errors](https://github.com/rust-lang/rust/pull/120895)
* [emit a diagnostic for invalid target options](https://github.com/rust-lang/rust/pull/120631)
* [emit more specific diagnostics when enums fail to cast with `as`](https://github.com/rust-lang/rust/pull/120822)
* [encode `coroutine_for_closure` for foreign crates](https://github.com/rust-lang/rust/pull/120897)
* [exhaustiveness: prefer "`0..MAX` not covered" to "`_` not covered"](https://github.com/rust-lang/rust/pull/120727)
* [fix ICE for deref coercions with type errors](https://github.com/rust-lang/rust/pull/120972)
* [fix `ErrorGuaranteed` unsoundness with stash/steal](https://github.com/rust-lang/rust/pull/120828)
* [fix cycle error when a static and a promoted are mutually recursive](https://github.com/rust-lang/rust/pull/120960)
* [fix more `ty::Error` ICEs in MIR passes](https://github.com/rust-lang/rust/pull/120817)
* [for E0223, suggest associated functions that are similar to the path](https://github.com/rust-lang/rust/pull/120632)
* [for a rigid projection, recursively look at the self type's item bounds to fix the `associated_type_bounds` feature](https://github.com/rust-lang/rust/pull/120584)
* [gracefully handle non-WF alias in `assemble_alias_bound_candidates_recur`](https://github.com/rust-lang/rust/pull/120899)
* [harmonize `AsyncFn` implementations, make async closures conditionally impl `Fn*` traits](https://github.com/rust-lang/rust/pull/120712)
* [hide impls if trait bound is proven from env](https://github.com/rust-lang/rust/pull/120836)
* [hir: make sure all `HirId`s have corresponding HIR Node`s`](https://github.com/rust-lang/rust/pull/120206)
* [improve 'generic param from outer item' error for `Self` and inside `static`/`const` items](https://github.com/rust-lang/rust/pull/119939)
* [improve normalization of `Pointee::Metadata`](https://github.com/rust-lang/rust/pull/120354)
* [improve pretty printing for associated items in trait objects](https://github.com/rust-lang/rust/pull/120739)
* [introduce `enter_forall` to supercede `instantiate_binder_with_placeholders`](https://github.com/rust-lang/rust/pull/120544)
* [lowering unnamed fields and anonymous adt](https://github.com/rust-lang/rust/pull/115367)
* [make `min_exhaustive_patterns` match `exhaustive_patterns` better](https://github.com/rust-lang/rust/pull/120775)
* [make it so that async-fn-in-trait is compatible with a concrete future in implementation](https://github.com/rust-lang/rust/pull/120103)
* [make privacy visitor use types more (instead of HIR)](https://github.com/rust-lang/rust/pull/113671)
* [make traits / trait methods detected by the dead code lint](https://github.com/rust-lang/rust/pull/118257)
* [mark "unused binding" suggestion as maybe incorrect](https://github.com/rust-lang/rust/pull/120470)
* [match lowering: consistently lower bindings deepest-first](https://github.com/rust-lang/rust/pull/120214)
* [merge `impl_polarity` and `impl_trait_ref` queries](https://github.com/rust-lang/rust/pull/120919)
* [more internal emit diagnostics cleanups](https://github.com/rust-lang/rust/pull/120833)
* [move path implementations into `sys`](https://github.com/rust-lang/rust/pull/120776)
* [normalize type outlives obligations in NLL for new solver](https://github.com/rust-lang/rust/pull/120513)
* [print image input file and checksum in CI only](https://github.com/rust-lang/rust/pull/120827)
* [print kind of coroutine closure](https://github.com/rust-lang/rust/pull/120896)
* [properly handle `async` block and `async fn` in `if` exprs without `else`](https://github.com/rust-lang/rust/pull/120696)
* [provide more suggestions on invalid equality where bounds](https://github.com/rust-lang/rust/pull/120751)
* [record coroutine kind in coroutine generics](https://github.com/rust-lang/rust/pull/120746)
* [remove some `unchecked_claim_error_was_emitted` calls](https://github.com/rust-lang/rust/pull/120735)
* [resolve: unload speculatively resolved crates before freezing cstore](https://github.com/rust-lang/rust/pull/119592)
* [rework support for async closures; allow them to return futures that borrow from the closure's captures](https://github.com/rust-lang/rust/pull/120361)
* [static mut: allow mutable reference to arbitrary types, not just slices and arrays](https://github.com/rust-lang/rust/pull/117614)
* [stop bailing out from compilation just because there were incoherent traits](https://github.com/rust-lang/rust/pull/120558)
* [suggest `[tail @ ..]` on `[..tail]` and `[...tail]` where `tail` is unresolved](https://github.com/rust-lang/rust/pull/120597)
* [suggest less bug-prone construction of Duration in docs](https://github.com/rust-lang/rust/pull/119242)
* [suggest name value cfg when only value is used for check-cfg](https://github.com/rust-lang/rust/pull/120435)
* [suggest pattern tests when modifying exhaustiveness](https://github.com/rust-lang/rust/pull/120763)
* [suggest turning `if let` into irrefutable `let` if appropriate](https://github.com/rust-lang/rust/pull/120479)
* [suppress suggestions in derive macro](https://github.com/rust-lang/rust/pull/120272)
* [take empty `where` bounds into account when suggesting predicates](https://github.com/rust-lang/rust/pull/120874)
* [toggle `assert_unsafe_precondition` in codegen instead of expansion](https://github.com/rust-lang/rust/pull/120594)
* [turn the "no saved object file in work product" ICE into a translatable fatal error](https://github.com/rust-lang/rust/pull/120865)
* [warn on references casting to bigger memory layout](https://github.com/rust-lang/rust/pull/118983)
* [unstably allow constants to refer to statics and read from immutable statics](https://github.com/rust-lang/rust/pull/119614)
* [use the same mir-opt bless targets on all platforms](https://github.com/rust-lang/rust/pull/120060)
* [enable MIR JumpThreading by default](https://github.com/rust-lang/rust/pull/117206)
* [fix mir pass ICE in the presence of other errors](https://github.com/rust-lang/rust/pull/120782)
* [miri: fix ICE with symbolic alignment check on extern static](https://github.com/rust-lang/rust/pull/120683)
* [miri: implement the `mmap64` foreign item](https://github.com/rust-lang/miri/pull/3285)
* [prevent running some code if it is already in the map](https://github.com/rust-lang/rust/pull/120579)
* [A trait's local impls are trivially coherent if there are no impls](https://github.com/rust-lang/rust/pull/120834)
* [use `ensure` when the result of the query is not needed beyond its `Result`ness](https://github.com/rust-lang/rust/pull/120771)
* [implement SystemTime for UEFI](https://github.com/rust-lang/rust/pull/120351)
* [implement sys/thread for UEFI](https://github.com/rust-lang/rust/pull/120938)
* [core/time: avoid divisions in `Duration::new`](https://github.com/rust-lang/rust/pull/120308)
* [core: add Duration constructors](https://github.com/rust-lang/rust/pull/120307)
* [make `NonZero` constructors generic](https://github.com/rust-lang/rust/pull/120521)
* [reconstify `Add`](https://github.com/rust-lang/rust/pull/120381)
* [replace pthread `RwLock` with custom implementation](https://github.com/rust-lang/rust/pull/110211)
* [simd intrinsics: add `simd_shuffle_generic` and other missing intrinsics](https://github.com/rust-lang/rust/pull/119213)
* [cargo: test-support: remove special case for `$message_type`](https://github.com/rust-lang/cargo/pull/13424)
* [cargo: don't add the new package to workspace.members if there is no existing workspace in Cargo.toml](https://github.com/rust-lang/cargo/pull/13391)
* [cargo: enable edition migration for 2024](https://github.com/rust-lang/cargo/pull/13429)
* [cargo: feat: add hint for adding members to workspace](https://github.com/rust-lang/cargo/pull/13411)
* [cargo: fix confusing error messages for sparse index replaced source](https://github.com/rust-lang/cargo/pull/13433)
* [cargo: fix: don't duplicate comments when editing TOML](https://github.com/rust-lang/cargo/pull/13402)
* [cargo: relax a test to permit warnings to be emitted, too](https://github.com/rust-lang/cargo/pull/13415)
* [rustdoc: Correctly generate path for non-local items in source code pages](https://github.com/rust-lang/rust/pull/120596)
* [bindgen: add target mappings for `riscv64imac` and `riscv32imafc`](https://github.com/rust-lang/rust-bindgen/pull/2751)
* [bindgen: feat: add `headers` option](https://github.com/rust-lang/rust-bindgen/pull/2743)
* [clippy: `mem_replace_with_default` No longer triggers on unused expression](https://github.com/rust-lang/rust-clippy/pull/12278)
* [clippy: `similar_names`: don't raise if the first character is different](https://github.com/rust-lang/rust-clippy/pull/12258)
* [clippy: `to_string_trait_impl`: avoid linting if the impl is a specialization](https://github.com/rust-lang/rust-clippy/pull/12264)
* [clippy: `unconditional_recursion`: compare by `Ty`s instead of DefId`s`](https://github.com/rust-lang/rust-clippy/pull/12177)
* [clippy: don't allow derive macros to silence `disallowed_macros`](https://github.com/rust-lang/rust-clippy/pull/12267)
* [clippy: don't lint `incompatible_msrv` in test code](https://github.com/rust-lang/rust-clippy/pull/12261)
* [clippy: extend `NONMINIMAL_BOOL` lint](https://github.com/rust-lang/rust-clippy/pull/12248)
* [clippy: fix broken URL in `Lint Configuration`](https://github.com/rust-lang/rust-clippy/pull/12272)
* [clippy: fix false positive in `redundant_type_annotations` lint](https://github.com/rust-lang/rust-clippy/pull/12216)
* [clippy: add autofixes for `unnecessary_fallible_conversions`](https://github.com/rust-lang/rust-clippy/pull/12070)
* [clippy: fix: ICE when array index exceeds usize](https://github.com/rust-lang/rust-clippy/pull/12266)
* [clippy: refactor `implied_bounds_in_impls` lint](https://github.com/rust-lang/rust-clippy/pull/12269)
* [clippy: return `Some` from `walk_to_expr_usage` more](https://github.com/rust-lang/rust-clippy/pull/11812)
* [clippy: stop linting `blocks_in_conditions` on `match` with weird attr macro case](https://github.com/rust-lang/rust-clippy/pull/12040)
* [rust-analyzer: abstract more over ItemTreeLoc-like structs](https://github.com/rust-lang/rust-analyzer/pull/16525)
* [rust-analyzer: better error message for when proc-macros have not yet been built](https://github.com/rust-lang/rust-analyzer/pull/16462)
* [rust-analyzer: add "unnecessary else" diagnostic and fix](https://github.com/rust-lang/rust-analyzer/pull/16502)
* [rust-analyzer: add break and return postfix keyword completions](https://github.com/rust-lang/rust-analyzer/pull/16454)
* [rust-analyzer: add diagnostic with fix to replace trailing `return <val>;` with `<val>`](https://github.com/rust-lang/rust-analyzer/pull/16460)
* [rust-analyzer: add incorrect case diagnostics for traits and their associated items](https://github.com/rust-lang/rust-analyzer/pull/16477)
* [rust-analyzer: allow cargo check to run on only the current package](https://github.com/rust-lang/rust-analyzer/pull/16510)
* [rust-analyzer: completion list suggests constructor like & builder methods first](https://github.com/rust-lang/rust-analyzer/pull/16117)
* [rust-analyzer: improve support for ignored proc macros](https://github.com/rust-lang/rust-analyzer/pull/15923)
* [rust-analyzer: introduce term search to rust-analyzer](https://github.com/rust-lang/rust-analyzer/pull/16092)
* [rust-analyzer: create `UnindexedProject` notification to be sent to the client](https://github.com/rust-lang/rust-analyzer/pull/15863)
* [rust-analyzer: substitute `$saved_file` in custom check commands](https://github.com/rust-lang/rust-analyzer/pull/15476)
* [rust-analyzer: fix incorrect inlining of functions that come from MBE macros](https://github.com/rust-lang/rust-analyzer/pull/16497)
* [rust-analyzer: `waker_getters` tracking issue from 87021 for 96992](https://github.com/rust-lang/rust-analyzer/pull/16134)
* [rust-analyzer: fix macro transcriber emitting incorrect lifetime tokens](https://github.com/rust-lang/rust-analyzer/pull/16530)
* [rust-analyzer: fix target layout fetching](https://github.com/rust-lang/rust-analyzer/pull/16545)
* [rust-analyzer: fix tuple structs not rendering visibility in their fields](https://github.com/rust-lang/rust-analyzer/pull/16509)
* [rust-analyzer: highlight rustdoc](https://github.com/rust-lang/rust-analyzer/pull/16541)
* [rust-analyzer: preserve where clause when builtin derive](https://github.com/rust-lang/rust-analyzer/pull/16484)
* [rust-analyzer: recover from missing argument in call expressions](https://github.com/rust-lang/rust-analyzer/pull/16124)
* [rust-analyzer: remove unnecessary `.as_ref()` in generate getter assist](https://github.com/rust-lang/rust-analyzer/pull/16487)
* [rust-analyzer: validate literals in proc-macro-srv `FreeFunctions::literal_from_str`](https://github.com/rust-lang/rust-analyzer/pull/16547)
* [rust-analyzer: implement `literal_from_str` for proc macro server](https://github.com/rust-lang/rust-analyzer/pull/16446)
* [rust-analyzer: implement convert to guarded return assist for `let` statement with type that implements `std::ops::Try`](https://github.com/rust-lang/rust-analyzer/pull/16424)

### Rust Compiler Performance Triage

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# Quote of the Week

<!-- QOTW goes here -->
> For some weird reason the Elixir Discord community has a distinct lack of programmer-socks-wearing queer furries, at least compared to Rust, or even most other tech-y Discord servers I’ve seen. It caused some weird cognitive dissonance. Why do I feel vaguely strange hanging out online with all these kind, knowledgeable, friendly and compassionate techbro’s? Then I see a name I recognized from elsewhere and my hindbrain goes “oh thank gods, I know for a fact she’s actually a snow leopard in her free time”. Okay, this nitpick is firmly tongue-in-cheek, but the Rust user-base continues to be a fascinating case study in how many weirdos you can get together in one place when you very explicitly say it’s ok to be a weirdo.
– [SimonHeath on the alopex Wiki's ElixirNitpicks page](https://wiki.alopex.li/ElixirNitpicks#Misc)

Thanks to [Brian Kung](https://users.rust-lang.org/t/twir-quote-of-the-week/328/1522) for the suggestion!

[Please submit quotes and vote for next week!](https://users.rust-lang.org/t/twir-quote-of-the-week/328)

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