Merge pull request #1095 from llogiq/twir-316

C/QotW+notable changes

Author: nasa42

drafts/2019-12-10-this-week-in-rust.md

@@ -22,9 +22,9 @@ Find all #Rust2020 posts at [Read Rust](https://readrust.net/rust-2020/).
 
 # Crate of the Week
 
-This week's crate is [joinery](https://docs.rs/joinery), a library for generic string joining.
+This week's crate is [StaticVec](https://github.com/slightlyoutofphase/staticvec), a nightly-only const-generics-backed fixed size vec crate.
 
-Thanks to [Nathan West](https://users.rust-lang.org/t/crate-of-the-week/2704/677) for the suggestions!
+Thanks to [ABagOfChips](https://users.rust-lang.org/t/crate-of-the-week/2704/682) for the suggestions!
 
 [Submit your suggestions and votes for next week][submit_crate]!
 
@@ -46,35 +46,49 @@ If you are a Rust project owner and are looking for contributors, please submit
 
 # Updates from Rust Core
 
-264 pull requests were [merged in the last week][merged]
-
-[merged]: https://github.com/search?q=is%3Apr+org%3Arust-lang+is%3Amerged+merged%3A2019-11-25..2019-12-02
-
-* [stabilize nested self receivers in 1.41.0](https://github.com/rust-lang/rust/pull/64325)
-* [add memoization for const function evaluations](https://github.com/rust-lang/rust/pull/66294)
-* [add crc and crypto to target feature whitelist on arm](https://github.com/rust-lang/rust/pull/66918)
-* [conditional compilation for sanitizers](https://github.com/rust-lang/rust/pull/66245)
-* [add support for sanitizer recover and tracking origins of uninitialized memory](https://github.com/rust-lang/rust/pull/66522)
-* [async fn resume after completion](https://github.com/rust-lang/rust/pull/66321)
-* [use structured suggestion when requiring `Copy` constraint in type param](https://github.com/rust-lang/rust/pull/66567)
-* [various tweaks to diagnostic output](https://github.com/rust-lang/rust/pull/66754)
-* [add version mismatch help message for unimplemented trait](https://github.com/rust-lang/rust/pull/66561)
-* [AST address-of](https://github.com/rust-lang/rust/pull/66671)
-* [initial implementation of or-pattern usefulness checking](https://github.com/rust-lang/rust/pull/66612)
-* [polonius: illegal subset relation errors using placeholder loans](https://github.com/rust-lang/polonius/pull/137)
-* [fix opaque types resulting from projections in function signature](https://github.com/rust-lang/rust/pull/66178)
-* [simplify memory categorization](https://github.com/rust-lang/rust/pull/66246)
-* [remove interior mutability in mir predecessors cache](https://github.com/rust-lang/rust/pull/64736)
-* [rustc: move debug info from LocalDecl and UpvarDecl into a dedicated VarDebugInfo](https://github.com/rust-lang/rust/pull/56231)
-* [create promoted MIR fragments for `const` and `static`s](https://github.com/rust-lang/rust/pull/66642)
-* [alloc: add new_zeroed() versions like new_uninit()](https://github.com/rust-lang/rust/pull/66128)
-* [impl TrustedLen for vec::Drain](https://github.com/rust-lang/rust/pull/66759)
-* [atomic as_mut_ptr](https://github.com/rust-lang/rust/pull/66705)
-* [implement Debug for MaybeUninit](https://github.com/rust-lang/rust/pull/65013)
-* [libc: add support for shared memory operations for solaris/illumos](https://github.com/rust-lang/libc/pull/1584)
-* [cargo: stabilize profile-overrides](https://github.com/rust-lang/cargo/pull/7591)
-* [rustup: add toolchain install --allow-downgrade option](https://github.com/rust-lang/rustup/pull/2126)
-* [docs.rs: match library properly if multiple crate-types are in use](https://github.com/rust-lang/docs.rs/pull/499)
+247 pull requests were [merged in the last week][merged]
+
+[merged]: https://github.com/search?q=is%3Apr+org%3Arust-lang+is%3Amerged+merged%3A2019-12-02..2019-12-09
+
+* [implement `#[track_caller]` attribute](https://github.com/rust-lang/rust/pull/65881) (RFC #[2091](https://rust-lang.github.io/rfcs/2091-inline-semantic.html))
+* [syntax: unify macro and attribute arguments in AST](https://github.com/rust-lang/rust/pull/66935)
+* [stdarch: add CRC32 detection to arm32](https://github.com/rust-lang/stdarch/pull/830)
+* [fix `TypedArena` returning wrong pointers for recursive allocations](https://github.com/rust-lang/rust/pull/67003)
+* [make `ForeignItem` an alias of `Item`](https://github.com/rust-lang/rust/pull/67114)
+* [remove boxed closures in address parser](https://github.com/rust-lang/rust/pull/67085)
+* [rustc: hide HirId's fmt::Debug output from -Z span_free_formats](https://github.com/rust-lang/rust/pull/66850)
+* [make `process_obligations()` greedier](https://github.com/rust-lang/rust/pull/66408)
+* [check break target availability when checking breaks with values](https://github.com/rust-lang/rust/pull/66863)
+* [include a span in more `expected...found` notes](https://github.com/rust-lang/rust/pull/67011)
+* [do not ICE on async fn with non-Copy inferred type arg](https://github.com/rust-lang/rust/pull/67004)
+* [make try_mark_previous_green aware of cycles](https://github.com/rust-lang/rust/pull/66846)
+* [add feature gate for mut refs in const fn](Add feature gate for mut refs in const fn)
+* [change unused_labels from allow to warn](https://github.com/rust-lang/rust/pull/66325)
+* [show the sign for signed ops on `exact_div`](https://github.com/rust-lang/rust/pull/66148)
+* [chalk: convert ensure_answer_recursively to be iterative instead of recursive](https://github.com/rust-lang/chalk/pull/281)
+* [handle diverging functions forwarding their return place](https://github.com/rust-lang/rust/pull/66827)
+* [cleanup `BodyCache`](https://github.com/rust-lang/rust/pull/66991)
+* [remove hack for top-level or-patterns in match checking](https://github.com/rust-lang/rust/pull/66967)
+* [const-prop: fix ICE calculating enum discriminant](https://github.com/rust-lang/rust/pull/66960)
+* [miri: tweak and use `OsStr` interfaces](https://github.com/rust-lang/miri/pull/1099)
+* [only memoize const fn calls during const eval](https://github.com/rust-lang/rust/pull/66866)
+* [miri: add flag to ignore memory leaks](https://github.com/rust-lang/miri/pull/1106)
+* [better way to ignore tests in miri](https://github.com/rust-lang/miri/pull/1105)
+* [codegen "unreachable" for invalid `SetDiscriminant`](https://github.com/rust-lang/rust/pull/67054)
+* [codegen: Migrate to `LLVM`{`Get`, `Set`}`ValueName2`](https://github.com/rust-lang/rust/pull/67033)
+* [update the minimum external LLVM to 7](https://github.com/rust-lang/rust/pull/66973)
+* [implement illegal subset relations errors using Polonius](https://github.com/rust-lang/rust/pull/67016)
+* [add `ExitStatusExt` into prelude](https://github.com/rust-lang/rust/pull/67041)
+* [rename `bool::then_*` to `bool::to_option_*` and use where appropriate](https://github.com/rust-lang/rust/pull/65195)
+* [add `{f32,f64}::approx_unchecked_to<Int>` unsafe methods](https://github.com/rust-lang/rust/pull/66841)
+* [add test for `NAME` environment variable when `cargo new`](https://github.com/rust-lang/cargo/pull/7667)
+* [cargo: remove `--offline` empty index error](https://github.com/rust-lang/cargo/pull/7655)
+* [cargo: add a `--offline` hint](https://github.com/rust-lang/cargo/pull/7654)
+* [rustdoc: less minification](https://github.com/rust-lang/rust/pull/66828)
+* [rustfmt: switch to non-recursive mode by default](https://github.com/rust-lang/rustfmt/pull/3938)
+* [rustup: output the previous version of a toolchain when it is updated](https://github.com/rust-lang/rustup/pull/2143)
+* [rustup: resolve potential future shock (x.yyy.zz)](https://github.com/rust-lang/rustup/pull/2132)
+* [crates.io: add audit trail to the publish, yank and unyank transactions](https://github.com/rust-lang/crates.io/pull/1700)
 
 ## Approved RFCs
 
@@ -137,13 +151,11 @@ Email the [Rust Community Team][community] for access.
 
 # Quote of the Week
 
-> > Heard recently creative coding experience which rust gives. What about unconscious coding experience - do whatever you can to make your code compile as late as you can, then go sleep and find your code correct and working in the morning
->
-> Woah, I know people say the Rust compiler is slow but I never had a Rust program that took all night to compile☺
+> So, in this regard and IMO, C++ has a saner model here. And if C++ is saner than you, that's not a good sign ☺
 
-– [Maxim Vorobjov and ZiCog in our Quote of the Week Thread](https://users.rust-lang.org/t/twir-quote-of-the-week/328/749)
+– [Boris Kolpackov on rust internals](https://internals.rust-lang.org/t/crate-dependency-discovery/11418/4)
 
-Thanks to [both of them and mmmmib](https://users.rust-lang.org/t/twir-quote-of-the-week/328/752) for the suggestion!
+Thanks to [UtherII](https://users.rust-lang.org/t/twir-quote-of-the-week/328/753) for the suggestion!
 
 [Please submit quotes and vote for next week!](https://users.rust-lang.org/t/twir-quote-of-the-week/328)