test_translator.py fails on Mac M1 without -march=native target args

[bytewife]

Removing the -march=native from test_translator.py causes the script to indefinitely stall when run on a Mac M1. See #778 for more details

Log:

ivy:~/projects/c2rust(master!?)via 🐍 v3.11.1 via 🦀 v1.65.0-nightly via 🐏 10GiB/16GiB took 248ms  ./scripts/test_translator.py tests --log DEBUG --only-directories misc
args: ./scripts/test_translator.py tests --log DEBUG --only-directories misc
misc:
compilation command:
 /usr/bin/clang -c -fPIC /Users/ivy/projects/c2rust/tests/misc/src/vectortypes.c /Users/ivy/projects/c2rust/tests/misc/src/sizeofs.c /Users/ivy/projects/c2rust/tests/misc/src/lvalues.c /Users/ivy/projects/c2rust/tests/misc/src/shadowing.c 

...

translating uninitialized.cranslating the C file into Rust...
translation command:
 LD_LIBRARY_PATH=/Users/ivy/.rustup/toolchains/nightly-2022-08-08-aarch64-apple-darwin/lib \
/Users/ivy/projects/c2rust/target/release/c2rust-transpile /Users/ivy/projects/c2rust/tests/misc/src/compile_commands.json --prefix-function-names rust_ --overwrite-existing --log-level=debug --
Running ['/Users/ivy/projects/c2rust/target/release/c2rust-transpile', '/Users/ivy/projects/c2rust/tests/misc/src/compile_commands.json', '--prefix-function-names', 'rust_', '--overwrite-existing', '--log-level=debug', '--']
stdout:
Transpiling uninitialized.c

stderr:

Chdir to /Users/ivy/projects/c2rust/tests/misc
Running ['/Users/ivy/.cargo/bin/cargo', 'build', '--release']

[bytewife]

Reran test_translator.py again and this error popped up instead:

 [ OK ]     test test_enums.rs - test_buffer4
 [ OK ]     test test_enums.rs - test_buffer5
simd:
 [ FAILED ] create libtest.a
In file included from /Users/ivy/projects/c2rust/tests/simd/src/x86.c:1:
/Library/Developer/CommandLineTools/usr/lib/clang/14.0.0/include/xmmintrin.h:14:2: error: "This header is only meant to be used on x86 and x64 architecture"
#error "This header is only meant to be used on x86 and x64 architecture"
 ^
In file included from /Users/ivy/projects/c2rust/tests/simd/src/x86.c:1:
In file included from /Library/Developer/CommandLineTools/usr/lib/clang/14.0.0/include/xmmintrin.h:17:
/Library/Developer/CommandLineTools/usr/lib/clang/14.0.0/include/mmintrin.h:14:2: error: "This header is only meant to be used on x86 and x64 architecture"
#error "This header is only meant to be used on x86 and x64 architecture"
 ^
/Library/Developer/CommandLineTools/usr/lib/clang/14.0.0/include/mmintrin.h:54:12: error: invalid conversion between vector type '__m64' (vector of 1 'long long' value) and integer type 'int' of different size
    return (__m64)__builtin_ia32_vec_init_v2si(__i, 0);
           ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
/Library/Developer/CommandLineTools/usr/lib/clang/14.0.0/include/mmintrin.h:133:12: error: invalid conversion between vector type '__m64' (vector of 1 'long long' value) and integer type 'int' of different size
    return (__m64)__builtin_ia32_packsswb((__v4hi)__m1, (__v4hi)__m2);
           ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
/Library/Developer/CommandLineTools/usr/lib/clang/14.0.0/include/mmintrin.h:163:12: error: invalid conversion between vector type '__m64' (vector of 1 'long long' value) and integer type 'int' of different size
    return (__m64)__builtin_ia32_packssdw((__v2si)__m1, (__v2si)__m2);
           ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
...
/Library/Developer/CommandLineTools/usr/lib/clang/14.0.0/include/mmintrin.h:487:12: error: invalid conversion between vector type '__m64' (vector of 1 'long long' value) and integer type 'int' of different size
    return (__m64)__builtin_ia32_paddusw((__v4hi)__m1, (__v4hi)__m2);
           ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
fatal error: too many errors emitted, stopping now [-ferror-limit=]
20 errors generated.

Test summary:
  unexpected failures: 1
  unexpected successes: 0
  expected failures: 2
  successes: 45