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+Title: This Week in Rust 294
+Number: 294
+Date: 2019-07-09
+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 [aljabar](https://github.com/maplant/aljabar), an extremely generic linear algebra libary. Thanks to [Vikrant](https://users.rust-lang.org/t/crate-of-the-week/2704/574) 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.
+
+* [TiKV: Replace Debug formatting with Display formatting in errors, panics and logs](https://github.com/tikv/tikv/issues/4960).
+* [Goblin: Crash on malformed ELF file](https://github.com/m4b/goblin/issues/120). Goblin is an impish, cross-platform binary parsing crate, written in Rust.
+
+gfx-rs introduces the [contributor-friendly](https://github.com/gfx-rs/gfx/issues?q=is%3Aissue+is%3Aopen+label%3Acontributor-friendly) label for issues that are appropriately inviting to new members:
+
+* [Should have a way of telling whether backend is supported](https://github.com/gfx-rs/gfx/issues/2783).
+* [A comparative table of HAL features available per backend](https://github.com/gfx-rs/gfx/issues/2547).
+* (hal) [Consider removing typed command buffers, pools and queues](https://github.com/gfx-rs/gfx/issues/2862).
+* (metal) [Try Kudzu instead of storage-map](https://github.com/gfx-rs/gfx/issues/2860).
+* (dx12) [Support VertexIndex and InstanceIndex semantics](https://github.com/gfx-rs/gfx/issues/2589).
+* (dx12) [Pipeline caches](https://github.com/gfx-rs/gfx/issues/2877).
+
+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
+
+196 pull requests were [merged in the last week][merged]
+
+[merged]: https://github.com/search?q=is%3Apr+org%3Arust-lang+is%3Amerged+merged%3A2019-06-24..2019-07-01
+
+* [Clean up query cache code](https://github.com/rust-lang/rust/pull/59722)
+* [Don't ICE on mutable zst slices](https://github.com/rust-lang/rust/pull/62094)
+* [syntax: Remove `ast::Guard`](https://github.com/rust-lang/rust/pull/62075)
+* [Always parse `async unsafe fn` + properly ban in 2015](https://github.com/rust-lang/rust/pull/62241)
+* [Call out explicitly that general read needs to be called with an initialized buffer](https://github.com/rust-lang/rust/pull/62102)
+* [Fix error counting](https://github.com/rust-lang/rust/pull/62055)
+* [Use ecx for const-prop local storage](https://github.com/rust-lang/rust/pull/62012)
+* [Fix HIR visit order](https://github.com/rust-lang/rust/pull/61572)
+* [Extend the `#[must_use]` lint to boxed types](https://github.com/rust-lang/rust/pull/62228)
+* [Extend the `#[must_use]` lint to arrays](https://github.com/rust-lang/rust/pull/62235)
+* [Clean up MIR drop generation](https://github.com/rust-lang/rust/pull/61872)
+* [Use a more efficient iteration order for backward dataflow](https://github.com/rust-lang/rust/pull/62063)
+* [Use a more efficient iteration order for forward dataflow](https://github.com/rust-lang/rust/pull/62062)
+* [save-analysis: Use buffered writes](https://github.com/rust-lang/rust/pull/62164)
+* [Remove `FnBox`](https://github.com/rust-lang/rust/pull/62043)
+* [rustdoc: Remove unused derives and variants](https://github.com/rust-lang/rust/pull/62224)
+* [rustdoc: Prevent panic when sysroot cannot be computed](https://github.com/rust-lang/rust/pull/61459)
+* [backtrace: More improvements to gimli support](https://github.com/rust-lang/backtrace-rs/pull/217)
+* [rustup: Switch to `std::fs::read_to_string`](https://github.com/rust-lang/rustup.rs/pull/1906)
+
+## 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:
+
+* [RFC 2359: Finalize syntax for slice patterns with subslices](https://github.com/rust-lang/rfcs/pull/2359).
+* [RFC 2707: Make `..` a pattern syntactically](https://github.com/rust-lang/rfcs/pull/2707).
+
+## 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)
+
+* [disposition: merge] [Permit impl Trait in type aliases](https://github.com/rust-lang/rfcs/pull/2515).
+* [disposition: merge] [Add key and value methods to DebugMap](https://github.com/rust-lang/rfcs/pull/2696).
+
+### [Tracking Issues & PRs](https://github.com/rust-lang/rust/labels/final-comment-period)
+
+* [disposition: merge] [Stabilize todo macro](https://github.com/rust-lang/rust/pull/61879).
+* [disposition: merge] [Add `impl<T> FromIterator<T> for Arc/Rc<[T]>`](https://github.com/rust-lang/rust/pull/61953).
+
+## New RFCs
+
+*No new RFCs were proposed this week.*
+
+# Upcoming Events
+
+### Asia Pacific
+
+* [Jul  7. Tokyo, JP - Tokyo Rust Meetup - Rust LT #6](https://rust.connpass.com/event/133657/).
+* [Jul 10. Petaling Jaya, MY - Rust Meetup July 2019](https://docs.google.com/forms/d/e/1FAIpQLSeyDIRlKFE0h4gJ8cxL6tz_3G4p7k4okZZBNhGbuitlOqBJOg/viewform).
+
+### Europe
+
+* [Jul  9. Göteborg, SE - Rust Gbg — July 2019](https://www.meetup.com/rustgbg/events/262786615/).
+* [Jul 10. Berlin, DE - OpenTechSchool Berlin - Rust Hack and Learn](https://www.meetup.com/opentechschool-berlin/events/gkkttqyzkbnb/).
+* [Jul 18. Turin, IT - Mozilla Torino - Gruppo di studio Rust](https://www.meetup.com/Mozilla-Torino/events/258593192).
+
+### North America
+
+* [Jul  9. Redmond, WA, US - Seattle Rust Meetup - Monthly meetup](https://www.meetup.com/Seattle-Rust-Meetup/events/gfnncryzkbmb/).
+* [Jul 10. Vancouver, BC, CA - Vancouver Rust meetup](https://www.meetup.com/Vancouver-Rust/events/fzqqwqyzkbnb/).
+* [Jul 11. Columbus, OH, US - Columbus Rust Society - Monthly Meeting](https://www.meetup.com/columbus-rs/events/dbcfrpyzkbpb/).
+* [Jul 11. San Diego, CA, US - San Diego Rust July Meetup](https://www.meetup.com/San-Diego-Rust/events/262650307/).
+* [Jul 17. San Francisco, CA, US - Rust in Blockchain San Francisco - In Rust We Trust](https://www.meetup.com/Rust-in-Blockchain-San-Francisco/events/262773260/).
+
+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:community-team@rust-lang.org
+
+# Rust Jobs
+
+* [Blockchain Runtime Engineer at Parity, Berlin, DE or remote](https://www.parity.io/jobs/#berlin-blockchain-runtime-engineer).
+
+*Tweet us at [@ThisWeekInRust](https://twitter.com/ThisWeekInRust) to get your job offers listed here!*
+
+# Quote of the Week
+
+> Python and Go pick up your trash for you. C lets you litter everywhere, but throws a fit when it steps on your banana peel. Rust slaps you and demands that you clean up after yourself.
+
+– [Nicholas Hahn on his blog](http://www.nicolas-hahn.com/python/go/rust/programming/2019/07/01/program-in-python-go-rust/)
+
+Thanks to [UtherII](https://users.rust-lang.org/t/twir-quote-of-the-week/328/662) 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>