Updates from core

rustc: Remove platform intrinsics crate
https://github.com/rust-lang/rust/pull/57416

implement new literal type Err
https://github.com/rust-lang/rust/pull/57651

Better lifetime error message
https://github.com/rust-lang/rust/pull/56479

Add span for malformed doc comment
https://github.com/rust-lang/rust/pull/57784

Add "dereference boxed value" suggestion
https://github.com/rust-lang/rust/pull/57783

Suggest correct cast for struct fields with shorthand syntax
https://github.com/rust-lang/rust/pull/57769

Continue parsing after parent type args and suggest using angle brackets
https://github.com/rust-lang/rust/pull/57768

Remove delay_span_bug from qualify_min_const_fn
https://github.com/rust-lang/rust/pull/57736

Use structured suggestion to surround struct literal with parenthesis
https://github.com/rust-lang/rust/pull/57725

Point at cause for expectation in return type type error
https://github.com/rust-lang/rust/pull/57723

Fix suggestions given mulitple bad lifetimes
https://github.com/rust-lang/rust/pull/57720

better error message for bad manifest with cargo install
https://github.com/rust-lang/cargo/pull/6560

add applicability to remaining suggestions
https://github.com/rust-lang/rust/pull/57699

use a faster early exit during region expansion
https://github.com/rust-lang/rust/pull/57697

Tweak expand_node
https://github.com/rust-lang/rust/pull/57719

simplify TokenStream some more
https://github.com/rust-lang/rust/pull/57486

redo hir::Stmt
https://github.com/rust-lang/rust/pull/57689

high priority resolutions for associated variants
https://github.com/rust-lang/rust/pull/57501

provide suggestion for invalid boolean cast
https://github.com/rust-lang/rust/pull/57481

two HIR tweaks
https://github.com/rust-lang/rust/pull/57658

librustc_metadata: pass a default value when unwrapping a span
https://github.com/rust-lang/rust/pull/57650

privacy: account for associated existential types
https://github.com/rust-lang/rust/pull/57649

use structured macro and path resolve suggestions
https://github.com/rust-lang/rust/pull/57635

unaccept extern_in_paths
https://github.com/rust-lang/rust/pull/57572

querify entry_fn
https://github.com/rust-lang/rust/pull/57573

querify local plugin_registrar_fn and proc_macro_decls_static
https://github.com/rust-lang/rust/pull/57570

modify some parser diagnostics to continue evaluating beyond the parser
https://github.com/rust-lang/rust/pull/57540

Fix poor worst case performance of set intersection
https://github.com/rust-lang/rust/pull/57043

add core::iter::once_with()
https://github.com/rust-lang/rust/pull/57579

Add is_sorted to Iterator and [T]
https://github.com/rust-lang/rust/pull/55045

add a debug_assert to Vec::set_len
https://github.com/rust-lang/rust/pull/57589

enhance Pin impl applicability for PartialEq and PartialOrd
https://github.com/rust-lang/rust/pull/57685

Change bounds on TryFrom blanket impl to use Into instead of From
https://github.com/rust-lang/rust/pull/56796

stabilize FileExt::read_exact_at/write_all_at
https://github.com/rust-lang/rust/pull/57625

rustdoc: Add option to persist doc test executables
https://github.com/rust-lang/rust/pull/56189

crates.io: Reject publishing of crates that depend on an alternative registry
https://github.com/rust-lang/crates.io/pull/1589

News

🎈🎉 Announcing Rust 1.32.0. 🎉🎈
https://blog.rust-lang.org/2019/01/17/Rust-1.32.0.html

A bot for Starcraft in Rust, C, or any other language.
https://habr.com/en/post/436254/

Building JavaScript development tools in Rust.
https://freemasen.github.io/rusty-ecma-book/

Guide to rust-analyzer.
https://github.com/rust-analyzer/rust-analyzer/blob/e0d8c86563b72e5414cf10fe16da5e88201447e2/guide.md

The state of ggez, 2019.
https://wiki.alopex.li/TheStateOfGGEZ2019

proc-macro-rules - macro_rules patterns in procedural macros.
https://www.ncameron.org/blog/proc-macro-rules/

Polonius and region errors.
http://smallcultfollowing.com/babysteps/blog/2019/01/17/polonius-and-region-errors/

Why aren't my Rust threads running?
https://esimmler.com/why-arent-my-rust-threads-running/

Paw at Rust GUIs.
https://medium.com/@m.siglreith/paw-at-rust-guis-d4d848e14b94

Serialising Rust tests.
https://tech.labs.oliverwyman.com/blog/2019/01/14/serialising-rust-tests/

Crate of the week: rust-analyzer

This week's crate is rust-analyzer, an experimental Rust compiler frontend for IDEs. Thanks to llogiq for the suggestion!

This week in Rust #271 — 29 jan 2019

https://this-week-in-rust.org/blog/2019/01/29/this-week-in-rust-271/

Updates from core

enable RISC-V atomic compare and swap
https://github.com/rust-lang/rust/pull/57925

recover from parse errors in literal struct fields and incorrect float literals
https://github.com/rust-lang/rust/pull/57779

merge visitors in AST validation
https://github.com/rust-lang/rust/pull/57730

resolve: Fix span arithmetics in the import conflict error
https://github.com/rust-lang/rust/pull/57908

fix race condition when emitting stored diagnostics
https://github.com/rust-lang/rust/pull/57066

don't ICE when logging unusual types
https://github.com/rust-lang/rust/pull/57865

combine all builtin early lints
https://github.com/rust-lang/rust/pull/57726

add suggestion for moving type declaration before associated type bindings in generic arguments
https://github.com/rust-lang/rust/pull/57886

add suggestion for incorrect field syntax
https://github.com/rust-lang/rust/pull/57863

suggest removing leading left angle brackets
https://github.com/rust-lang/rust/pull/57852

add error for trailing angle brackets
https://github.com/rust-lang/rust/pull/57817

print visible name for types as well as modules
https://github.com/rust-lang/rust/pull/57802

use structured suggestion instead of notes
https://github.com/rust-lang/rust/pull/57795

explain type mismatch cause pointing to return type when it is impl Trait
https://github.com/rust-lang/rust/pull/57793

when using value after move, point at span of local
https://github.com/rust-lang/rust/pull/57294

conditionally skip two passes if their related attributes were not found
https://github.com/rust-lang/rust/pull/57691

fix evaluating trivial drop glue in constants
https://github.com/rust-lang/rust/pull/57734

const_eval: predetermine the layout of all locals when pushing a stack frame
https://github.com/rust-lang/rust/pull/57677

fix memory leak in P::filter_map
https://github.com/rust-lang/rust/pull/57667

get rid of the fake stack frame for reading from constants
https://github.com/rust-lang/rust/pull/57606

add intrinsic to create an integer bitmask from a vector mask
https://github.com/rust-lang/rust/pull/57269

un-deprecate mem::zeroed
https://github.com/rust-lang/rust/pull/57825

make MutexGuard's Debug implementation more useful
https://github.com/rust-lang/rust/pull/57703

make str indexing generic on SliceIndex
https://github.com/rust-lang/rust/pull/57604

small perf improvement for fmt
https://github.com/rust-lang/rust/pull/57537

add signed num::NonZeroI* types
https://github.com/rust-lang/rust/pull/57475

std: stabilize fixed-width integer atomics
https://github.com/rust-lang/rust/pull/57425

use pinning for generators to make trait safe
https://github.com/rust-lang/rust/pull/55704

implement optimize(size) and optimize(speed) attributes
https://github.com/rust-lang/rust/pull/55641

cargo: make incremental compilation the default for all profiles
https://github.com/rust-lang/cargo/pull/6564

rustdoc: fix ICE from loading proc-macro stubs
https://github.com/rust-lang/rust/pull/57846

News

Writing an OS in Rust: Advanced paging.
https://os.phil-opp.com/advanced-paging/

Embedding WebAssembly in your Rust application.
https://medium.com/wasmer/executing-webassembly-in-your-rust-application-d5cd32e8ce46

Lock-free Rust: Crossbeam in 2019.
https://stjepang.github.io/2019/01/29/lock-free-rust-crossbeam-in-2019.html

Performance of Rust's match vs. lookup tables.
https://kevinlynagh.com/notes/match-vs-lookup/

Librnoscript's GObject boilerplate is in Rust now.
https://people.gnome.org/~federico/blog/librnoscript-gobject-in-rust.html

Enjoy a slice of QUIC, and Rust. Quiche is an implementation of the QUIC transport protocol, by Cloudflare.
https://blog.cloudflare.com/enjoy-a-slice-of-quic-and-rust/

Exporting Serde types to TypeScript.
http://timryan.org/2019/01/22/exporting-serde-types-to-typenoscript.html

Crate of the week: typetag

This week's crate is typetag, a small crate to allow for serde trait objects. Thanks to Christopher Durham for the suggestion!

This week in Rust #272 — 05 feb 2019

https://this-week-in-rust.org/blog/2019/02/05/this-week-in-rust-272/

Updates from core

HirIdification: add key HirId methods
https://github.com/rust-lang/rust/pull/58090

don't panic when accessing enum variant ctor using Self in match
https://github.com/rust-lang/rust/pull/58007

use LLVM intrinsics for saturating add/sub
https://github.com/rust-lang/rust/pull/58003

add MOVBE x86 CPU feature
https://github.com/rust-lang/rust/pull/57999

NVPTX target specification
https://github.com/rust-lang/rust/pull/57937

fix bug in integer range matching
https://github.com/rust-lang/rust/pull/57978

unused variable suggestions apply on all patterns
https://github.com/rust-lang/rust/pull/57899

add information to higher-ranked lifetimes conflicts error messages
https://github.com/rust-lang/rust/pull/57901

rustc: use multiple threads by default
https://github.com/rust-lang/rust/pull/57948

misc performance tweaks
https://github.com/rust-lang/rust/pull/57916

simplify ConstValue::ScalarPair
https://github.com/rust-lang/rust/pull/57442

mark str::trim* functions as #[must_use]
https://github.com/rust-lang/rust/pull/57106

override VecDeque's Iter::try_fold
https://github.com/rust-lang/rust/pull/57974

introduce into_raw_non_null on Rc and Arc
https://github.com/rust-lang/rust/pull/57934

implement Weak::{strong_count, weak_count}
https://github.com/rust-lang/rust/pull/56696

rename iter::unfold to iter::from_fn and remove explicit state
https://github.com/rust-lang/rust/pull/58062

stabilize std::error::Error::type_id
https://github.com/rust-lang/rust/pull/58048

stabilize split_ascii_whitespace
https://github.com/rust-lang/rust/pull/58047

cargo: fix overlapping progress with stdout
https://github.com/rust-lang/cargo/pull/6618

cargo: improve progress bar flickering
https://github.com/rust-lang/cargo/pull/6615

News

Cargo's next few years.
https://www.ncameron.org/blog/cargos-next-few-years/

The steps towards rustc, the great optimiser.
https://kazlauskas.me/entries/the-road-to-bestest-optimiser.html

Salsa: Incremental recompilation.
http://smallcultfollowing.com/babysteps/blog/2019/01/29/salsa-incremental-recompilation/

Collection of Rust hacks.
https://vorner.github.io/2019/02/03/hacks.html

Writing Neovim plugins in Rust.
https://medium.com/@srishanbhattarai/a-detailed-guide-to-writing-your-first-neovim-plugin-in-rust-a81604c606b1

osaka.rs - rust async without the noise.
https://aep.github.io/rust-async-without-the-noise/

Rust on iOS (and Android).
https://medium.com/visly/rust-on-ios-39f799b3c1dd

Rust: regretless concurrency.
https://medium.com/@polyglot_factotum/rust-regret-less-concurrency-2238b9e53333

Learning Rust via Advent of Code.
https://www.forrestthewoods.com/blog/learning-rust-via-advent-of-code/

Creating web-server .deb binary with rust.
https://gill.net.in/posts/creating-web-server-deb-binary-with-rust/

An introduction to the Rust programming language for Node developers.
https://twitter.com/PipoPeperoni/status/1092842843637456899

Crate of the week: log-derive

This week's crate is log-derive, a procedural macro to log function outputs. Thanks to elichai2 for the suggestion!

This week in Rust #273 — 12 feb 2019

https://this-week-in-rust.org/blog/2019/02/12/this-week-in-rust-273/

Updates from core

Initial addition of the Embedded Rust Book.
https://github.com/rust-lang/rust/pull/56291

Add const generics to the AST.
https://github.com/rust-lang/rust/pull/58191

Error on duplicate matcher bindings.
https://github.com/rust-lang/rust/pull/57617

libc: RFC 2235 - Implement PartialEq,Eq,Hash,Debug for all types.
https://github.com/rust-lang/libc/pull/1217

Lower constant patterns with ascribed types.
https://github.com/rust-lang/rust/pull/58161

Make intern_lazy_const actually intern its argument.
https://github.com/rust-lang/rust/pull/58207

Avoid committing to autoderef in object method probing.
https://github.com/rust-lang/rust/pull/57885

Add #[must_use] to core::task::Poll.
https://github.com/rust-lang/rust/pull/58145

Add #[must_use] message to Fn* traits.
https://github.com/rust-lang/rust/pull/58262

Avoid some bounds checks in binary_heap::{PeekMut,Hole}.
https://github.com/rust-lang/rust/pull/58123

Make -Zdump-mir dump shims.
https://github.com/rust-lang/rust/pull/58103

Cargo: Bail when trying to run "test --doc --no-run".
https://github.com/rust-lang/cargo/pull/6628

Improve error message and docs for non-UTF-8 bytes in stdio on Windows.
https://github.com/rust-lang/rust/pull/58136

Move privacy checking later in the pipeline and make some passes run in parallel.
https://github.com/rust-lang/rust/pull/58010

Overhaul syntax::fold::Folder.
https://github.com/rust-lang/rust/pull/58061

Factor out error reporting from smart_resolve_path_fragment fn.
https://github.com/rust-lang/rust/pull/58065

Do not ICE in codegen when using a extern_type static.
https://github.com/rust-lang/rust/pull/58192

hir: add more HirId methods.
https://github.com/rust-lang/rust/pull/58139

Implement more detailed self profiling.
https://github.com/rust-lang/rust/pull/58085

Add a forever unstable opt-out of const qualification checks.
https://github.com/rust-lang/rust/pull/56123

Initial implementation of rustfixable unused_imports lint.
https://github.com/rust-lang/rust/pull/56645

Add a query type which is always marked as red if it runs.
https://github.com/rust-lang/rust/pull/57770

Don't try to clean predicates involving ReErased.
https://github.com/rust-lang/rust/pull/57851

Deduplicate mismatched delimiter errors.
https://github.com/rust-lang/rust/pull/57944

Add suggestion for duplicated import.
https://github.com/rust-lang/rust/pull/57973

Allow #[repr(align(x))] on enums.
https://github.com/rust-lang/rust/pull/57998

News

Learning Rust in 2019.
https://www.ragona.com/posts/learning_rust_2019

A quick look at trait objects in Rust.
https://tratt.net/laurie/blog/entries/a_quick_look_at_trait_objects_in_rust.html

Allocations in Rust: An introduction to the memory model.
https://speice.io/2019/02/understanding-allocations-in-rust.html

Custom exit status codes with ? in main.
https://www.joshmcguigan.com/blog/custom-exit-status-codes-rust/

Rust: a unique perspective.
https://limpet.net/mbrubeck/2019/02/07/rust-a-unique-perspective.html

Rust on STM32: Blinking an LED.
https://jonathanklimt.de/electrics/programming/rust-STM32F103-blink/

Generators I: Toward a minimum viable product.
https://boats.gitlab.io/blog/post/generators-i/

Aturon retires from the Core Team (but not from Rust).
https://internals.rust-lang.org/t/aturon-retires-from-the-core-team-but-not-from-rust/9392

Rewriting stackcollapse-xdebug in Rust.
https://daniellockyer.com/rewriting-stackcollapse-xdebug/

Are you still using 'println' in Rust for debugging?
https://blog.knoldus.com/are-you-still-using-println-in-rust-for-debugging/

UCG+Miri All-Hands 2019 Recap.
https://www.ralfj.de/blog/2019/02/12/all-hands-recap.html

Crate of the week: sysinfo

This week's crate is sysinfo, a system handler to get information and interact with processes. Thanks to GuillaumeGomez for the suggestion!

This week in Rust #274 — 19 feb 2019

https://this-week-in-rust.org/blog/2019/02/19/this-week-in-rust-274/

Updates from core

Implement incremental "fat" LTO
https://github.com/rust-lang/rust/pull/58378

Enable comparing fat pointers
https://github.com/rust-lang/rust/pull/58301

impl iter() for dyn Error
https://github.com/rust-lang/rust/pull/58289

Improve the error messages for missing stability attributes
https://github.com/rust-lang/rust/pull/58276

Cut down on number formating code size
https://github.com/rust-lang/rust/pull/58272

Reduce the size of hir::Expr
https://github.com/rust-lang/rust/pull/58258

Make saturating_add and saturating_sub const functions
https://github.com/rust-lang/rust/pull/58246

Stabilize slice_sort_by_cached_key
https://github.com/rust-lang/rust/pull/58074

Stabilize str::escape_* methods with new return types
https://github.com/rust-lang/rust/pull/58051

Stabilize the time_checked_add feature
https://github.com/rust-lang/rust/pull/58034

Update the future/task API
https://github.com/rust-lang/rust/pull/57992

Speed up the fast path for assert_eq! and assert_ne!
https://github.com/rust-lang/rust/pull/57815

cargo: Stabilize Alternative Registries
https://github.com/rust-lang/cargo/pull/6654

News

Moving from Ruby to Rust.
https://deliveroo.engineering/2019/02/14/moving-from-ruby-to-rust.html

Rust lifetime visualization ideas.
https://blog.adamant-lang.org/2019/rust-lifetime-visualization-ideas/

Generators II: The question mark problem.
https://boats.gitlab.io/blog/post/generators-ii/

A list of itch.io games written in Rust.
https://itch.io/c/449652/rustlang-games

Cross-compiling Rust code to Minix.
https://iandouglasscott.com/2019/02/18/cross-compiling-rust-code-to-minix/

One hundred Rust PRs later.
https://phansch.net/2019/02/18/onehundred-rust-prs/

This week in Rust and WebAssembly 10.
https://rustwasm.github.io/2019/02/13/this-week-in-rust-and-wasm-010.html

Crate of the week: num-format

This week's crate is num-format, a crate to format numbers to international standards. Thanks to Vikrant for the suggestion!

This week in Rust #275 — 26 feb 2019

https://this-week-in-rust.org/blog/2019/02/26/this-week-in-rust-275/

Updates from core

Add an unstable option to build proc macros for both the host and the target
https://github.com/rust-lang/cargo/pull/6547

Avoid ICE when region sneaks into impl trait
https://github.com/rust-lang/rust/pull/58649

Add const generics to the HIR
https://github.com/rust-lang/rust/pull/58503

Improve parsing diagnostic for negative supertrait bounds
https://github.com/rust-lang/rust/pull/57364

Optimise vec![false; N] to zero-alloc
https://github.com/rust-lang/rust/pull/58628

Add expected/provided byte alignments to validation error message
https://github.com/rust-lang/rust/pull/58658

Remove LazyTokenStream
https://github.com/rust-lang/rust/pull/58476

Add better error message for partial move
https://github.com/rust-lang/rust/pull/58199

Suggest removing parentheses surrounding lifetimes
https://github.com/rust-lang/rust/pull/58198

Use normal mutable borrows in matches
https://github.com/rust-lang/rust/pull/57609

Monomorphize less code in fs::{read, write}
https://github.com/rust-lang/rust/pull/58530

Make overflowing and wrapping negation const
https://github.com/rust-lang/rust/pull/58044

Fix overlapping references in BTree
https://github.com/rust-lang/rust/pull/58431

Relax some Ord bounds on BinaryHeap
https://github.com/rust-lang/rust/pull/58421

Relax some Hash bounds on HashMap and HashSet
https://github.com/rust-lang/rust/pull/58370

Turn duration consts into associated consts
https://github.com/rust-lang/rust/pull/58595

RangeInclusive internal iteration performance improvement
https://github.com/rust-lang/rust/pull/58122

Override VecDeque::try_rfold, also update iterator
https://github.com/rust-lang/rust/pull/58064

Stabilize TryFrom and TryInto with a convert::Infallible empty enum
https://github.com/rust-lang/rust/pull/58302

Stabilize iter::successors and iter::from_fn
https://github.com/rust-lang/rust/pull/58576

Destabilize fixed-width const defined atomic integers
https://github.com/rust-lang/rust/pull/58616

Deprecate the unstable Vec::resize_default
https://github.com/rust-lang/rust/pull/57656

Modify doctest's auto-fn main() to allow Results
https://github.com/rust-lang/rust/pull/56470

crates.io: Stop logging the referer header
https://github.com/rust-lang/crates.io/pull/1636