Incompatiblity with rules_rust + rust version >= 1.70.0

[DhashS]

I'm seeing this error:

home/dhash/.cache/bazel/_bazel_dhash/d01f478a72a2d3121d654f978507dcd9/external/crate_index__async-trait-0.1.71/BUILD.bazel:22:16: Compiling Rust proc-macro async_trait v0.1.71

<snip>

error: linking with `external/zig_sdk/tools/x86_64-linux-gnu.2.28/c++` failed: exit status: 1
  |
  = note: LC_ALL="C" PATH="/home/radix/rbe/worker/build/27ac6bc9a01363d5/root/bazel-out/k8-opt-exec-2B5CBBC6/bin/external/rust_linux_x86_64__x86_64-unknown-linux-gnu__stable_tools/rust_toolchain/lib/rustlib/x86_64-unknown-linux-gnu/bin" VSLANG="1033" "external/zig_sdk/tools/x86_64-linux-gnu.2.28/c++" "-Wl,--version-script=/tmp/rustcHJc8ST/list" "-Wl,--no-undefined-version"

<snip>

= note: error: unsupported linker arg: --no-undefined-version

which is present due to, as far as I can tell, that flag being flipped on by rust in that release by default. It's only for proc-macros, and as a first pass solution i've put in ziglang/zig#17326. If there's a better way to do this, that would be cool.

[motiejus]

Fixed upstream in ziglang/zig#18486 , you can pick up this change with hermetic_cc_toolchain v2.2.0.