Pull rust updates from Miguel Ojeda:
"The first set of changes after the merge, the major ones being:
- String and formatting: new types 'CString', 'CStr', 'BStr' and
'Formatter'; new macros 'c_str!', 'b_str!' and 'fmt!'.
- Errors: the rest of the error codes from 'errno-base.h', as well as
some 'From' trait implementations for the 'Error' type.
- Printing: the rest of the 'pr_*!' levels and the continuation one
'pr_cont!', as well as a new sample.
- 'alloc' crate: new constructors 'try_with_capacity()' and
'try_with_capacity_in()' for 'RawVec' and 'Vec'.
- Procedural macros: new macros '#[vtable]' and 'concat_idents!', as
well as better ergonomics for 'module!' users.
- Asserting: new macros 'static_assert!', 'build_error!' and
'build_assert!', as well as a new crate 'build_error' to support
them.
- Vocabulary types: new types 'Opaque' and 'Either'.
- Debugging: new macro 'dbg!'"
* tag 'rust-6.2' of https://github.com/Rust-for-Linux/linux: (28 commits)
rust: types: add `Opaque` type
rust: types: add `Either` type
rust: build_assert: add `build_{error,assert}!` macros
rust: add `build_error` crate
rust: static_assert: add `static_assert!` macro
rust: std_vendor: add `dbg!` macro based on `std`'s one
rust: str: add `fmt!` macro
rust: str: add `CString` type
rust: str: add `Formatter` type
rust: str: add `c_str!` macro
rust: str: add `CStr` unit tests
rust: str: implement several traits for `CStr`
rust: str: add `CStr` type
rust: str: add `b_str!` macro
rust: str: add `BStr` type
rust: alloc: add `Vec::try_with_capacity{,_in}()` constructors
rust: alloc: add `RawVec::try_with_capacity_in()` constructor
rust: prelude: add `error::code::*` constant items
rust: error: add `From` implementations for `Error`
rust: error: add codes from `errno-base.h`
...
96f4263568