[linux-next:master 9676/10599] ld.lld: error: undefined symbol: rust_build_error

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

tree:   https://git.kernel.org/pub/scm/linux/kernel/git/next/linux-next.git master
head:   88cbd8ac379cf5ce68b7efcfd4d1484a6871ee0b
commit: 01e345e82ec3a5a7edeb9fa0dcb7fd4b0e5c534e [9676/10599] rust: num: add Bounded integer wrapping type
config: loongarch-randconfig-6002-20251120 (https://download.01.org/0day-ci/archive/20251121/202511210055.RUsFNku1-lkp@intel.com/config)
compiler: clang version 18.1.8 (https://github.com/llvm/llvm-project 3b5b5c1ec4a3095ab096dd780e84d7ab81f3d7ff)
rustc: rustc 1.88.0 (6b00bc388 2025-06-23)
reproduce (this is a W=1 build): (https://download.01.org/0day-ci/archive/20251121/202511210055.RUsFNku1-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/202511210055.RUsFNku1-lkp@intel.com/

All errors (new ones prefixed by >>):

>> ld.lld: error: undefined symbol: rust_build_error
   >>> referenced by build_assert.rs:83 (rust/kernel/build_assert.rs:83)
   >>>               rust/doctests_kernel_generated.o:(<kernel::num::bounded::Bounded<u8, 1>>::from_expr) in archive vmlinux.a
   >>> referenced by build_assert.rs:83 (rust/kernel/build_assert.rs:83)
   >>>               rust/doctests_kernel_generated.o:(<kernel::num::bounded::Bounded<u32, 4>>::from_expr) in archive vmlinux.a
   >>> referenced by build_assert.rs:83 (rust/kernel/build_assert.rs:83)
   >>>               rust/doctests_kernel_generated.o:(<kernel::num::bounded::Bounded<u16, 8>>::from_expr) in archive vmlinux.a

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