Accepting request 800013 from home:MSirringhaus:branches:devel:languages:rust

- Update to version 1.43.0

OBS-URL: https://build.opensuse.org/request/show/800013
OBS-URL: https://build.opensuse.org/package/show/devel:languages:rust/rust?expand=0&rev=248

rust.changes

@@ -1,3 +1,89 @@
+-------------------------------------------------------------------
+Wed Apr 29 11:46:59 UTC 2020 - Martin Sirringhaus <martin.sirringhaus@suse.com>
+
+- Update to version 1.43.0
+ + Language
+  - Fixed using binary operations with `&{number}` (e.g. `&1.0`) 
+    not having the type inferred correctly.
+  - Attributes such as `#[cfg()]` can now be used on `if` 
+    expressions.
+  - Syntax only changes:
+    * Allow `type Foo: Ord` syntactically.
+    * Fuse associated and extern items up to defaultness.
+    * Syntactically allow `self` in all `fn` contexts.
+    * Merge `fn` syntax + cleanup item parsing.
+    * `item` macro fragments can be interpolated into `trait`s, 
+      `impl`s, and `extern` blocks.
+      For example, you may now write:
+      ```rust 
+      macro_rules! mac_trait {
+          ($i:item) => {
+              trait T { $i }
+          }
+      }
+      mac_trait! {
+          fn foo() {}
+      }
+      ```
+    * These are still rejected *semantically*, so you will likely 
+      receive an error but these changes can be seen and parsed by 
+      macros and conditional compilation.
+ + Compiler
+   - You can now pass multiple lint flags to rustc to override the 
+     previous flags. 
+     For example; `rustc -D unused -A unused-variables` denies
+     everything in the `unused` lint group except `unused-variables` 
+     which is explicitly allowed. However, passing 
+     `rustc -A unused-variables -D unused` denies everything in 
+     the `unused` lint group **including** `unused-variables` since 
+     the allow flag is specified before the deny flag (and therefore 
+     overridden).
+   - rustc will now prefer your system MinGW libraries over its 
+     bundled libraries if they are available on `windows-gnu`.
+   - rustc now buffers errors/warnings printed in JSON.
+ + Libraries
+   - `Arc<[T; N]>`, `Box<[T; N]>`, and `Rc<[T; N]>`, now implement 
+     `TryFrom<Arc<[T]>>`,`TryFrom<Box<[T]>>`, and `TryFrom<Rc<[T]>>`
+     respectively.
+     **Note** These conversions are only available when `N` is 
+     `0..=32`.
+   - You can now use associated constants on floats and integers 
+     directly, rather than having to import the module.
+     e.g. You can now write `u32::MAX` or `f32::NAN` with no imports.
+   - `u8::is_ascii` is now `const`.
+   - `String` now implements `AsMut<str>`.
+   - Added the `primitive` module to `std` and `core`. 
+     This module reexports Rust's primitive types. This is mainly 
+     useful in macros where you want avoid these types being shadowed.
+   - Relaxed some of the trait bounds on `HashMap` and `HashSet`.
+   - `string::FromUtf8Error` now implements `Clone + Eq`.
+ + Stabilized APIs
+   - `Once::is_completed`
+   - `f32::LOG10_2`
+   - `f32::LOG2_10`
+   - `f64::LOG10_2`
+   - `f64::LOG2_10`
+   - `iter::once_with`
+ + Cargo
+   - You can now set config `[profile]`s in your `.cargo/config`, 
+     or through your environment.
+   - Cargo will now set `CARGO_BIN_EXE_<name>` pointing to a 
+     binary's executable path when running integration tests or 
+     benchmarks.
+     `<name>` is the name of your binary as-is e.g. If you wanted 
+     the executable path for a binary named `my-program`you would 
+     use `env!("CARGO_BIN_EXE_my-program")`.
+ + Misc
+   - Certain checks in the `const_err` lint were deemed unrelated 
+     to const evaluation, and have been moved to the 
+     `unconditional_panic` and `arithmetic_overflow` lints.
+ + Compatibility Notes
+   - Having trailing syntax in the `assert!` macro is now a hard 
+     error. This has been a warning since 1.36.0.
+   - Fixed `Self` not having the correctly inferred type. This 
+     incorrectly led to some instances being accepted, and now 
+     correctly emits a hard error.
+
 -------------------------------------------------------------------
 Tue Apr  7 08:54:37 UTC 2020 - Andreas Schwab <schwab@suse.de>