draft 310.

Author: nasa42

drafts/2019-10-29-this-week-in-rust.md

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+Title: This Week in Rust 310
+Number: 310
+Date: 2019-10-29
+Category: This Week in Rust
+
+Hello and welcome to another issue of *This Week in Rust*!
+[Rust](http://rust-lang.org) is a systems language pursuing the trifecta: safety, concurrency, and speed.
+This is a weekly summary of its progress and community.
+Want something mentioned? Tweet us at [@ThisWeekInRust](https://twitter.com/ThisWeekInRust) or [send us a pull request](https://github.com/cmr/this-week-in-rust).
+Want to get involved? [We love contributions](https://github.com/rust-lang/rust/blob/master/CONTRIBUTING.md).
+
+*This Week in Rust* is openly developed [on GitHub](https://github.com/cmr/this-week-in-rust).
+If you find any errors in this week's issue, [please submit a PR](https://github.com/cmr/this-week-in-rust/pulls).
+
+# Updates from Rust Community
+
+## News & Blog Posts
+
+# Crate of the Week
+
+This week's crate is [grubbnet](https://github.com/dooskington/grubbnet), a TCP client/server library for networked applications and games.
+
+Thanks to [Dooskington](https://users.rust-lang.org/t/crate-of-the-week/2704/650) for the suggestion!
+
+[Submit your suggestions and votes for next week][submit_crate]!
+
+[submit_crate]: https://users.rust-lang.org/t/crate-of-the-week/2704
+
+# Call for Participation
+
+Always wanted to contribute to open-source projects but didn't 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.
+
+* [Clippy: Passing mutable references](https://github.com/rust-lang/rust-clippy/issues/353).
+* [rust-bindgen: Add --symbol-prefix flag](https://github.com/rust-lang/rust-bindgen/issues/1375).
+* [good first issue] [Spirit: Write a tutorial for Spirit](https://github.com/vorner/spirit/issues/42). Spirit is a helper to make creating and configuring unix daemons easier.
+
+If you are a Rust project owner and are looking for contributors, please submit tasks [here][guidelines].
+
+[guidelines]: https://users.rust-lang.org/t/twir-call-for-participation/4821
+
+# Updates from Rust Core
+
+353 pull requests were [merged in the last week][merged]
+
+[merged]: https://github.com/search?q=is%3Apr+org%3Arust-lang+is%3Amerged+merged%3A2019-10-14..2019-10-21
+
+* [Stabilize proc macros generating `macro_rules` items](https://github.com/rust-lang/rust/pull/64035)
+* [Return `false` from `needs_drop` for all zero-sized arrays](https://github.com/rust-lang/rust/pull/65389)
+* [Optimize `LexicalResolve::expansion`](https://github.com/rust-lang/rust/pull/65260)
+* [Remove custom `PartialEq` impls for `LocalInternedString`](https://github.com/rust-lang/rust/pull/65426)
+* [Optimize `BitIter`](https://github.com/rust-lang/rust/pull/65425)
+* [Optimize dropck](https://github.com/rust-lang/rust/pull/64595)
+* [More symbol cleanups](https://github.com/rust-lang/rust/pull/65545)
+* [Avoid unnecessary arena allocations in `expand_pattern()`](https://github.com/rust-lang/rust/pull/65463)
+* [Avoid unnecessary `TokenTree` to `TokenStream` conversions](https://github.com/rust-lang/rust/pull/65455)
+* [expand: Simplify expansion of derives](https://github.com/rust-lang/rust/pull/65252)
+* [Fix suggestion to constrain trait for method to be found](https://github.com/rust-lang/rust/pull/65242)
+* [syntax: add parser recovery for intersection- / and-patterns `p1 @ p2`](https://github.com/rust-lang/rust/pull/65410)
+* [Reducing spurious unused lifetime warnings](https://github.com/rust-lang/rust/pull/64603)
+* [Bring attention to suggestions when the only difference is capitalization](https://github.com/rust-lang/rust/pull/65398)
+* [Use structured suggestion for restricting bounds](https://github.com/rust-lang/rust/pull/65192)
+* [Fix zero-size uninitialized boxes](https://github.com/rust-lang/rust/pull/65174)
+* [Add check for overlapping ranges to unreachable patterns lint](https://github.com/rust-lang/rust/pull/64007)
+* [Use more fine grained locks for the dep graph](https://github.com/rust-lang/rust/pull/63756)
+* [Fix `canonicalize_const_var` leaking inference variables](https://github.com/rust-lang/rust/pull/65652)
+* [mir-opt: Improve SimplifyLocals pass so it can remove unused consts](https://github.com/rust-lang/rust/pull/65624)
+* [Improve error message for APIT with explicit generic arguments](https://github.com/rust-lang/rust/pull/65614)
+* [Remove unreachable unit tuple compare binop codegen](https://github.com/rust-lang/rust/pull/65605)
+* [Avoid ICE when `include!` is used by stdin crate](https://github.com/rust-lang/rust/pull/65603)
+* [Implement `AsRef<[T]>` for `List<T>`](https://github.com/rust-lang/rust/pull/65444)
+* [hashbrown: Remove most `#[inline]` annotations](https://github.com/rust-lang/hashbrown/pull/119)
+* [Always inline `mem::`{`size_of`, `align_of`} in debug builds](https://github.com/rust-lang/rust/pull/65016)
+* [Avoid realloc in `CString::new`](https://github.com/rust-lang/rust/pull/65551)
+* [`BTreeSet` symmetric_difference & union optimized](https://github.com/rust-lang/rust/pull/65226)
+* [cargo: Allow `--all-features` in root of virtual workspace](https://github.com/rust-lang/cargo/pull/7525)
+* [rustup install: add `--profile` flag to override profile](https://github.com/rust-lang/rustup.rs/pull/2075)
+
+## Approved RFCs
+
+Changes to Rust follow the Rust [RFC (request for comments)
+process](https://github.com/rust-lang/rfcs#rust-rfcs). These
+are the RFCs that were approved for implementation this week:
+
+*No RFCs were approved this week.*
+
+## Final Comment Period
+
+Every week [the team](https://www.rust-lang.org/team.html) announces the
+'final comment period' for RFCs and key PRs which are reaching a
+decision. Express your opinions now.
+
+### [RFCs](https://github.com/rust-lang/rfcs/labels/final-comment-period)
+
+*No RFCs are currently in final comment period.*
+
+### [Tracking Issues & PRs](https://github.com/rust-lang/rust/labels/final-comment-period)
+
+* [disposition: merge] [Tracking issue for todo! macro](https://github.com/rust-lang/rust/issues/59277).
+* [disposition: merge] [Tracking issue for floats ↔ bytes conversions](https://github.com/rust-lang/rust/issues/60446).
+* [disposition: merge] [Stabilize RFC 2451, re-rebalance coherence](https://github.com/rust-lang/rust/issues/63599).
+* [disposition: merge] [[rustdoc] stabilize cfg(doctest)](https://github.com/rust-lang/rust/pull/63803).
+* [disposition: merge] [Stabilize nested self receivers in 1.40.0](https://github.com/rust-lang/rust/pull/64325).
+* [disposition: merge] [Stabilize `Option::flatten`](https://github.com/rust-lang/rust/pull/64747).
+* [disposition: merge] [Stabilize `const_constructor`](https://github.com/rust-lang/rust/pull/65188).
+
+## New RFCs
+
+* [Standard lazy types](https://github.com/rust-lang/rfcs/pull/2788).
+* [Serve crates-io registry over HTTP as static files](https://github.com/rust-lang/rfcs/pull/2789).
+
+# Upcoming Events
+
+### Africa
+
+* [Nov  6. Johannesburg, ZA - Johannesburg Rust Meetup - informal discussions on topics related to the language](https://www.meetup.com/Johannesburg-Rust-Meetup/events/dgqmbryzpbjb/).
+
+### Asia Pacific
+
+* [Oct 26. Tokyo, JP - Rust.Tokyo 2019](https://rust.tokyo/).
+* [Oct 26. Taipei, TW - Rust Taiwan Meetup](https://www.facebook.com/events/495062051340992/).
+* [Oct 29. Sydney, AU - Rust Sydney - Meetup 18](https://www.meetup.com/Rust-Sydney/events/265708002/).
+* [Nov  4. Auckland, NZ - Rust AKL - Introduction to Rust (part 2 of 3)](https://www.meetup.com/rust-akl/events/259481269/).
+
+### Europe
+
+* [Oct 28. Zurich, CH - Rust Zurich - October Meetup: Claudia Saxer – 66 hours of Rust](https://www.meetup.com/Rust-Zurich/events/265507413/).
+* [Oct 28. Gouda, NL - Rust Nederland - Rust - Talks & Demos](https://www.meetup.com/Rust-Nederland/events/265656966).
+* [Oct 28. London, GB - Rust London User Group - LDN Talks October 2019](https://www.meetup.com/Rust-London-User-Group/events/265590044/).
+* [Oct 30. Berlin, DE - OpenTechSchool Berlin - Rust Hack and Learn](https://www.meetup.com/opentechschool-berlin/events/nxdpgryznbnc/).
+* [Oct 30. Copenhagen, DK - Copenhagen Rust Hack Night #19](https://cph.rs/).
+* **[Nov 9 & 10. Barcelona, ES - RustFest Barcelona 2019](https://barcelona.rustfest.eu/).**
+
+### North America
+
+* [Oct 28. Durham, NC, US - Triangle Rustaceans - Project Night & Lightning Talks](https://www.meetup.com/triangle-rustaceans/events/mfglwpyznblc/).
+* [Oct 29. Dallas, TX, US - Dallas Rust - Last Tuesday](https://www.meetup.com/Dallas-Rust/events/zfgwzmyznbmc/).
+* [Oct 29. Chicago, IL, US - Chicago Rust Meetup - Entity Component Systems: An Intro To The Specs Crate Using Roguelikes](https://www.meetup.com/Chicago-Rust-Meetup/events/265283294).
+* [Oct 30. San Francisco, CA, US - Rust in Blockchain Workshop Day (SFBW)](https://www.meetup.com/Rust-in-Blockchain-San-Francisco/events/265362152/)
+* [Oct 30. Santa Clara, CA, US - Rust Bay Area - [@ Intel Santa Clara] Security with Rust & SGX + Life of an Async fn](https://www.meetup.com/Rust-Bay-Area/events/265478102).
+* [Oct 30. Vancouver, BC, CA - Vancouver Rust meetup](https://www.meetup.com/Vancouver-Rust/events/rwcpfryznbnc/).
+* [Nov  6. Indianapolis, IN, US - Indy.rs](https://www.meetup.com/indyrs/events/mffbtpyzpbjb/).
+
+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][community] for access.
+
+[calendar]: https://www.google.com/calendar/embed?src=apd9vmbc22egenmtu5l6c5jbfc%40group.calendar.google.com
+[community]: mailto:[email protected]
+
+# Rust Jobs
+
+* [Rust Engineer at Provable, London, GB (Remote available)](https://www.reddit.com/r/rust/comments/d9l79d/official_rrust_whos_hiring_thread_for_jobseekers/f4r63ms/).
+* [Rust Senior Developer at Token, Palo Alto, CA, US](https://drive.google.com/file/d/1Rnc8HQLfiy4mvzZP--1ww1vTAX5FCagD/view).
+* [Software Manager at Georg Fischer Signet, El Monte, CA, US](https://www.indeed.com/m/viewjob?jk=e82dad5c02d490a2).
+* [Associate Software Engineer at Georg Fischer Signet, El Monte, CA, US](https://www.indeed.com/m/viewjob?jk=6d5ae77b64b16f72).
+* [Rust/Core Developer at Parity, Berlin, DE (Remote available)](https://www.parity.io/jobs/#berlin-rust-core-developer).
+
+*Tweet us at [@ThisWeekInRust](https://twitter.com/ThisWeekInRust) to get your job offers listed here!*
+
+# Quote of the Week
+
+> Rust helped me grasp concepts I should have known when writing C++
+
+– [Alexander Clarke on the Microsoft Security Response Center blog]()
+
+Thanks to [mmmmib](https://users.rust-lang.org/t/twir-quote-of-the-week/328/712) for the suggestion!
+
+[Please submit quotes and vote for next week!](https://users.rust-lang.org/t/twir-quote-of-the-week/328)
+
+*This Week in Rust is edited by: [nasa42](https://github.com/nasa42), [llogiq](https://github.com/llogiq), and [Flavsditz](https://github.com/Flavsditz).*
+
+<small>[Discuss on r/rust]().</small>