SUSE-RU-2021:2855-1: moderate: Recommended update for rust

[sle-updates at lists.suse.com]

   SUSE Recommended Update: Recommended update for rust
______________________________________________________________________________

Announcement ID:    SUSE-RU-2021:2855-1
Rating:             moderate
References:         SLE-18626 
Affected Products:
                    SUSE Linux Enterprise Module for Development Tools 15-SP3
______________________________________________________________________________

   An update that has 0 recommended fixes and contains one
   feature can now be installed.

Description:

   This update for rust fixes the following issues:

   This ships the new parallel rust 1.54 version.

   Version 1.54.0 (2021-07-29)

   Language:

   - You can now use macros for values in built-in attribute macros. While a
     seemingly minor addition on its own, this enables a lot of powerful
     functionality when combined correctly. Most notably you can now include
     external documentation in your crate by writing the following. ```rust
     #![doc = include_str!("README.md")] ``` You can also use this to include
     auto-generated modules: ```rust #[path = concat!(env!("OUT_DIR"),
     "/generated.rs")] mod generated; ```
   - You can now cast between unsized slice types (and types which contain
     unsized slices) in `const fn`.
   - You can now use multiple generic lifetimes with `impl Trait` where the
     lifetimes don't explicitly outlive another.

     In code this means that you can now have `impl Trait<'a, 'b>` where as
   before you could
     only have `impl Trait<'a, 'b> where 'b: 'a`.

   Compiler:

   - Rustc will now search for custom JSON targets in
     `/lib/rustlib/<target-triple>/target.json` where `/` is the "sysroot"
     directory. You can find your sysroot directory by running `rustc --print
     sysroot`.
   - Added `wasm` as a `target_family` for WebAssembly platforms.
   - You can now use `#[target_feature]` on safe functions when targeting
     WebAssembly platforms.
   - Improved debugger output for enums on Windows MSVC platforms.
   - Added tier 3\* support for `bpfel-unknown-none` and `bpfeb-unknown-none`.

   \* Refer to Rust's platform support page for more information on Rust's
   tiered platform support.

   Libraries:

   - `panic::panic_any` will now `#[track_caller]`.
   - Added `OutOfMemory` as a variant of `io::ErrorKind`.
   -  `proc_macro::Literal` now implements `FromStr`.
   - The implementations of vendor intrinsics in core::arch have been
     significantly refactored. The main user-visible changes are a 50%
     reduction in the size of libcore.rlib and stricter validation of
     constant operands passed to intrinsics. The latter is technically a
     breaking change, but allows Rust to more closely match the C vendor
     intrinsics API.

   Stabilized APIs:

   - BTreeMap::into_keys
   - BTreeMap::into_values
   - HashMap::into_keys
   - HashMap::into_values
   - arch::wasm32
   - VecDeque::binary_search
   - VecDeque::binary_search_by
   - VecDeque::binary_search_by_key
   - VecDeque::partition_point

   Cargo:

   - Added the `--prune <spec>` option to `cargo-tree` to remove a package
     from the dependency graph.
   - Added the `--depth` option to `cargo-tree` to print only to a certain
     depth in the tree.
   - Added the `no-proc-macro` value to `cargo-tree --edges` to hide
     procedural macro dependencies.
   - A new environment variable named `CARGO_TARGET_TMPDIR` is available.
     This variable points to a directory that integration tests and benches
     can use as a "scratchpad" for testing filesystem operations.


Patch Instructions:

   To install this SUSE Recommended Update use the SUSE recommended installation methods
   like YaST online_update or "zypper patch".

   Alternatively you can run the command listed for your product:

   - SUSE Linux Enterprise Module for Development Tools 15-SP3:

      zypper in -t patch SUSE-SLE-Module-Development-Tools-15-SP3-2021-2855=1



Package List:

   - SUSE Linux Enterprise Module for Development Tools 15-SP3 (aarch64 i586 ppc64le s390x x86_64):

      cargo-1.54.0-21.6.2
      rust-1.54.0-21.6.2
      rust-gdb-1.54.0-21.6.2

   - SUSE Linux Enterprise Module for Development Tools 15-SP3 (aarch64 ppc64le s390x x86_64):

      cargo1.54-1.54.0-7.3.1
      cargo1.54-debuginfo-1.54.0-7.3.1
      rust1.54-1.54.0-7.3.1
      rust1.54-debuginfo-1.54.0-7.3.1
      rust1.54-gdb-1.54.0-7.3.1

   - SUSE Linux Enterprise Module for Development Tools 15-SP3 (aarch64 x86_64):

      rls-1.54.0-21.6.2
      rls1.54-1.54.0-7.3.1
      rls1.54-debuginfo-1.54.0-7.3.1
      rust1.54-analysis-1.54.0-7.3.1
      rust1.54-doc-1.54.0-7.3.1

   - SUSE Linux Enterprise Module for Development Tools 15-SP3 (noarch):

      cargo1.54-doc-1.54.0-7.3.1
      rust1.54-src-1.54.0-7.3.1


References: