sets up draft for next week
Signed-off-by: Nell Shamrell <nellshamrell@gmail.com>
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Title: This Week in Rust 338
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Number: 338
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Date: 2020-05-12
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Category: This Week in Rust
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Hello and welcome to another issue of *This Week in Rust*!
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[Rust](http://rust-lang.org) is a systems language pursuing the trifecta: safety, concurrency, and speed.
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This is a weekly summary of its progress and community.
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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).
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Want to get involved? [We love contributions](https://github.com/rust-lang/rust/blob/master/CONTRIBUTING.md).
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*This Week in Rust* is openly developed [on GitHub](https://github.com/cmr/this-week-in-rust).
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If you find any errors in this week's issue, [please submit a PR](https://github.com/cmr/this-week-in-rust/pulls).
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# Updates from Rust Community
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## News & Blog Posts
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# Crate of the Week
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This week's crate is [WinRT-rs](https://github.com/microsoft/winrt-rs), Microsoft™'s official WinRT API for Rust.
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Thanks to [JLalu](https://users.rust-lang.org/t/crate-of-the-week/2704/767) for the suggestion!
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[Submit your suggestions and votes for next week][submit_crate]!
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[submit_crate]: https://users.rust-lang.org/t/crate-of-the-week/2704
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# Call for Participation
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Always wanted to contribute to open-source projects but didn't know where to start?
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Every week we highlight some tasks from the Rust community for you to pick and get started!
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Some of these tasks may also have mentors available, visit the task page for more information.
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If you are a Rust project owner and are looking for contributors, please submit tasks [here][guidelines].
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[guidelines]: https://users.rust-lang.org/t/twir-call-for-participation/4821
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# Updates from Rust Core
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372 pull requests were [merged in the last week][merged]
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[merged]: https://github.com/search?q=is%3Apr+org%3Arust-lang+is%3Amerged+merged%3A2020-04-27..2020-05-04
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* implement RFC [#2523](https://rust-lang.github.io/rfcs/2523-cfg-path-version.html), [`#[cfg(version(..))]`](https://github.com/rust-lang/rust/pull/71314)
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* [have the per-query caches store the results on arenas](https://github.com/rust-lang/rust/pull/70674)
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* [avoid duplicating code for each query](https://github.com/rust-lang/rust/pull/69808)
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* [forbid `dyn Trait` in patterns](https://github.com/rust-lang/rust/pull/71038)
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* [fix wrong argument in autoderef process](https://github.com/rust-lang/rust/pull/71627)
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* [suggest `into` instead of `try_into` if possible with int types](https://github.com/rust-lang/rust/pull/71617)
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* [tweak some suggestions in `rustc_resolve`](https://github.com/rust-lang/rust/pull/71438)
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* [add message for resolution failure because wrong namespace](https://github.com/rust-lang/rust/pull/71419)
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* [point at the return type on `.into()` failure caused by `?`](https://github.com/rust-lang/rust/pull/71409)
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* [suggest `;` or assignment to drop borrows in tail exprs](https://github.com/rust-lang/rust/pull/71217)
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* [on type mismatch involving associated type, suggest constraint](https://github.com/rust-lang/rust/pull/71108)
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* [minimize parameter of `coerce_borrowed_pointer`](https://github.com/rust-lang/rust/pull/71524)
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* [remove some `Vec` allocations to improve performance](https://github.com/rust-lang/rust/pull/71268)
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* [allow `Unreachable` terminators unconditionally in const-checking](https://github.com/rust-lang/rust/pull/71691)
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* [allow `Downcast` projections unconditionally in const-checking](https://github.com/rust-lang/rust/pull/71688)
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* [added MIR constant propagation of Scalars into function call arguments](https://github.com/rust-lang/rust/pull/71697)
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* [Miri: unleash all feature gates](https://github.com/rust-lang/rust/pull/71631)
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* [use existing framework for backward dataflow analyses](https://github.com/rust-lang/rust/pull/71006)
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* [add Read/Write::can_read/write_vectored](https://github.com/rust-lang/rust/pull/67841)
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* [add `RefCell::take`](https://github.com/rust-lang/rust/pull/71398)
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* [`slice::fill`: use `T` instead of generic arg](https://github.com/rust-lang/rust/pull/71165)
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* [`Vec` `drop` and `truncate`: drop using raw slice `*mut [T]`](https://github.com/rust-lang/rust/pull/71148)
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* [hashbrown: mark `RawTable::par_iter` `unsafe`](https://github.com/rust-lang/hashbrown/pull/157)
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## Approved RFCs
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Changes to Rust follow the Rust [RFC (request for comments) process](https://github.com/rust-lang/rfcs#rust-rfcs). These
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are the RFCs that were approved for implementation this week:
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* [RFC 2585: FC for unsafe blocks in unsafe fn](https://github.com/rust-lang/rfcs/pull/2585)
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## Final Comment Period
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Every week [the team](https://www.rust-lang.org/team.html) announces the
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'final comment period' for RFCs and key PRs which are reaching a
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decision. Express your opinions now.
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### [RFCs](https://github.com/rust-lang/rfcs/labels/final-comment-period)
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*No RFCs are in final comment period this week*
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### [Tracking Issues & PRs](https://github.com/rust-lang/rust/labels/final-comment-period)
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* [disposition: merge] [Tracking issue for RFC 2432, "Allow `if` and `match` in constants"](https://github.com/rust-lang/rust/issues/49146)
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* [disposition: merge] [Tracking issue for std::sync::Once poisoning](https://github.com/rust-lang/rust/issues/33577)
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## New RFCs
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* [Inline `const` expressions and patterns](https://github.com/rust-lang/rfcs/pull/2920)
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* [Add the `experimental_keywords` ability](https://github.com/rust-lang/rfcs/pull/2919)
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* [sigil-option-notation](https://github.com/rust-lang/rfcs/pull/2918)
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# Upcoming Events
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### Online
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* [May 20. Vancouver, BC, CA - Vancouver Rust - Rust Study/Hack/Hang-out night](https://www.meetup.com/Vancouver-Rust/events/qnrgnrybchbbc/).
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### North America
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* [May 6. Johannesburg, ZA - Johannesburg meetup](https://www.meetup.com/Johannesburg-Rust-Meetup)
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* [May 6. Portland, OR, US - PDXRust - NES Emulation in Rust](https://www.meetup.com/PDXRust/events/269165311/).
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* [May 6. Indianapolis, IN, US - Indy.rs - Rust Meetup](https://www.meetup.com/indyrs/events/dtqwprybchbjb/).
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* [May 6. Atlanta, GA, US - Rust Atlanta Meetup](https://www.meetup.com/Rust-ATL/)
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* [May 11. Seattle, WA, US - Seattle Rust Meetup](http://www.meetup.com/Seattle-Rust-Meetup/)
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* [May 13. Denver, CO, US Rust Boulder/Denver Monthly Meeting](https://www.meetup.com/Rust-Boulder-Denver/)
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* [May 13. Vancouver, BC, CA - Vancouver Rust Meetup](https://www.meetup.com/Vancouver-Rust/events/)
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* [May 14. Berlin, DE - Berlin Rust Hack and Learn](https://berline.rs/)
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* [May 14. Columbus, OH, US - Columbus Rust Society - Monthly Meeting](https://www.meetup.com/columbus-rs/events/dpkhgrybchbsb/).
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* [May 14. Lehi, UT, US - Utah Rust Monthly Meetup](https://www.meetup.com/utahrust)
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* [May 14. San Diego, CA, US - San Diego Rust](http://meetu.ps/c/2vF0G/4DXV4/a)
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* [May 19. Paris, FR - Rust Paris](https://www.meetup.com/Rust-Paris)
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If you are running a Rust event please add it to the [calendar] to get
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it mentioned here. Please remember to add a link to the event too.
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Email the [Rust Community Team][community] for access.
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[calendar]: https://www.google.com/calendar/embed?src=apd9vmbc22egenmtu5l6c5jbfc%40group.calendar.google.com
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[community]: mailto:community-team@rust-lang.org
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# Rust Jobs
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*Tweet us at [@ThisWeekInRust](https://twitter.com/ThisWeekInRust) to get your job offers listed here!*
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# Quote of the Week
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> I love Rust like I love Dark Souls.
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> It's difficult, but fair. I can not praise enough the software developers that realize proper errors are vastly superior to extensive docs.
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– [seph-reed on Hacker News](https://news.ycombinator.com/item?id=23032636)
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Thanks to [Armando Pérez Marqués](https://users.rust-lang.org/t/twir-quote-of-the-week/328/864) for the suggestions!
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[Please submit quotes and vote for next week!](https://users.rust-lang.org/t/twir-quote-of-the-week/328)
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*This Week in Rust is edited by: [nellshamrell](https://github.com/nellshamrell), [llogiq](https://github.com/llogiq), [srikwit](https://github.com/srikwit), and [nasa42](https://github.com/nasa42).*
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<small>[Discuss on r/rust]().</small>
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