error: failed to run `rustc` during ./build.sh on aarch64

Hello. I get the following error when running ./build.sh —release.

I don't have much experience with rust or gcc, so I apologize if this is a vague question.

stderr

error: failed to run `rustc` to learn about target-specific information

Caused by:
  process didn't exit successfully: `rustc - --crate-name ___ --print=file-names -Cpanic=abort -Csymbol-mangling-version=v0 -Cdebuginfo=2 -Clto=off -Zpanic-abort-tests -Zcodegen-backend=/home/rick/Projects/rustc_codegen_gcc/target/release/librustc_codegen_gcc.so --sysroot /home/rick/Projects/rustc_codegen_gcc/build_sysroot/sysroot --crate-type bin --crate-type rlib --crate-type dylib --crate-type cdylib --crate-type staticlib --crate-type proc-macro --print=sysroot --print=cfg` (exit status: 4)
  --- stderr
  0xffff8585b16f jit_langhook_pushdecl
        ../../gcc/gcc/jit/dummy-frontend.cc:908
  0xffff861225d7 aarch64_init_simd_builtin_types
        ../../gcc/gcc/config/aarch64/aarch64-builtins.cc:1149
  0xffff861240db aarch64_init_simd_builtins
        ../../gcc/gcc/config/aarch64/aarch64-builtins.cc:1590
  0xffff861240db aarch64_general_init_builtins()
        ../../gcc/gcc/config/aarch64/aarch64-builtins.cc:1986
  0xffff8606b2cb aarch64_init_builtins
        ../../gcc/gcc/config/aarch64/aarch64.cc:15192
  0xffff8587186f jit_langhook_init
        ../../gcc/gcc/jit/dummy-frontend.cc:616
  0xffff85868c2b lang_dependent_init
        ../../gcc/gcc/toplev.cc:1815
  0xffff85868c2b do_compile
        ../../gcc/gcc/toplev.cc:2110

Start by reproducing ./build.sh --release on aarch64 and capture the target-specific rustc invocation and stderr. Trace the failure through the reported aarch64 builtin and libgccjit stack frames; done means the build completes successfully on that target.