Re: [PATCH v3] rust: remove spurious compiler_builtins dependents

[kernel test robot <lkp@intel.com>]

Hi Tamir,

kernel test robot noticed the following build errors:

[auto build test ERROR on cc84ef3b88f407e8bd5a5f7b6906d1e69851c856]

url:    https://github.com/intel-lab-lkp/linux/commits/Tamir-Duberstein/rust-remove-spurious-compiler_builtins-dependents/20250721-012236
base:   cc84ef3b88f407e8bd5a5f7b6906d1e69851c856
patch link:    https://lore.kernel.org/r/20250720-rust-remove-compiler-builtins-deps-v3-1-0df3a493973f%40gmail.com
patch subject: [PATCH v3] rust: remove spurious compiler_builtins dependents
config: x86_64-rhel-9.4-rust (https://download.01.org/0day-ci/archive/20250721/202507211312.M1fkG8v8-lkp@intel.com/config)
compiler: clang version 20.1.8 (https://github.com/llvm/llvm-project 87f0227cb60147a26a1eeb4fb06e3b505e9c7261)
rustc: rustc 1.88.0 (6b00bc388 2025-06-23)
reproduce (this is a W=1 build): (https://download.01.org/0day-ci/archive/20250721/202507211312.M1fkG8v8-lkp@intel.com/reproduce)

If you fix the issue in a separate patch/commit (i.e. not just a new version of
the same patch/commit), kindly add following tags
| Reported-by: kernel test robot <lkp@intel.com>
| Closes: https://lore.kernel.org/oe-kbuild-all/202507211312.M1fkG8v8-lkp@intel.com/

All errors (new ones prefixed by >>):

>> error[E0463]: can't find crate for `core`
   |
   = note: the `target` target may not be installed
   = help: consider downloading the target with `rustup target add target`
   = help: consider building the standard library from source with `cargo build -Zbuild-std`
--
   For more information about this error, try `rustc --explain E0463`.
   make[3]: *** [rust/Makefile:514: rust/build_error.o] Error 1
>> error[E0463]: can't find crate for `core`
   |
   = note: the `target` target may not be installed
   = help: consider downloading the target with `rustup target add target`
   = help: consider building the standard library from source with `cargo build -Zbuild-std`
--
   For more information about this error, try `rustc --explain E0463`.
   make[3]: *** [rust/Makefile:518: rust/ffi.o] Error 1
>> error[E0463]: can't find crate for `core`
   |
   = note: the `target` target may not be installed
   = help: consider downloading the target with `rustup target add target`
   = help: consider building the standard library from source with `cargo build -Zbuild-std`

-- 
0-DAY CI Kernel Test Service
https://github.com/intel/lkp-tests/wiki