Changelog for rust1.54-doc-1.54.0-7.3.1.x86_64.rpm :

* Fri Aug 06 2021 william.brownAATTsuse.com- Change llvm_bundling to be required on s390x on 15.3 due to an llvm11 codegen issue.
* Fri Jul 30 2021 william.brownAATTsuse.comVersion 1.54.0 (2021-07-29) Language- [You can now use macros for values in built-in attribute macros.][83366] 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`.][85078]- [You can now use multiple generic lifetimes with `impl Trait` where the lifetimes don\'t explicitly outlive another.][84701] 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.json` where `/` is the \"sysroot\" directory.][83800] You can find your sysroot directory by running `rustc --print sysroot`.- [Added `wasm` as a `target_family` for WebAssembly platforms.][84072]- [You can now use `#[target_feature]` on safe functions when targeting WebAssembly platforms.][84988]- [Improved debugger output for enums on Windows MSVC platforms.][85292]- [Added tier 3\\
* support for `bpfel-unknown-none` and `bpfeb-unknown-none`.][79608] \\
* Refer to Rust\'s [platform support page][platform-support-doc] for more information on Rust\'s tiered platform support. Libraries- [`panic::panic_any` will now `#[track_caller]`.][85745]- [Added `OutOfMemory` as a variant of `io::ErrorKind`.][84744]- [ `proc_macro::Literal` now implements `FromStr`.][84717]- [The implementations of vendor intrinsics in core::arch have been significantly refactored.][83278] 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 ` option to `cargo-tree` to remove a package from the dependency graph.][cargo/9520]- [Added the `--depth` option to `cargo-tree` to print only to a certain depth in the tree ][cargo/9499]- [Added the `no-proc-macro` value to `cargo-tree --edges` to hide procedural macro dependencies.][cargo/9488]- [A new environment variable named `CARGO_TARGET_TMPDIR` is available.][cargo/9375] This variable points to a directory that integration tests and benches can use as a \"scratchpad\" for testing filesystem operations.