Zig CC - warning(link): failed to save linking hash digest file: PathAlreadyExists

[doawoo]

I'm attempting to use Zig as a drop-in C/C++ compiler for the Erlang BEAM VM, a fairly non-trivial application I know! However I've had a fair amount of success, and have produced some working bins using the bootstrapping config! (And 1 fully working build)
However I'm running into an issue I think may be intermittent. Occasionally the configuration fails with an error similar to the following output:

ld.lld -error-limit=0 -z stack-size=16777216 --gc-sections --eh-frame-hdr -m elf_x86_64 -o /root/.cache/zig/o/ce8888c0ef271e014f4b6291c8a8ec32/conftest /root/.cache/zig/o/94ffcf31c5e4cc64cd94e363da2a1e71/Scrt1.o /root/.cache/zig/o/468f28
6874aca0b60f01f3c146352a21/crti.o -L /data/third_party/out/lib -dynamic-linker /lib64/ld-linux-x86-64.so.2 /root/.cache/zig/o/f72c4fbb6ae144af50bb0ba0363dabe2/conftest.o /root/.cache/zig/o/e6594b6bdf5bcecfb938b6455a8ccf86/libcompiler_rt.
a /root/.cache/zig/o/c35965bcbdf27efb487c3cf458cbf195/libm.so.6 /root/.cache/zig/o/c35965bcbdf27efb487c3cf458cbf195/libpthread.so.0 /root/.cache/zig/o/c35965bcbdf27efb487c3cf458cbf195/libc.so.6 /root/.cache/zig/o/c35965bcbdf27efb487c3cf4
58cbf195/libdl.so.2 /root/.cache/zig/o/c35965bcbdf27efb487c3cf458cbf195/librt.so.1 /root/.cache/zig/o/c35965bcbdf27efb487c3cf458cbf195/libld.so.2 /root/.cache/zig/o/c35965bcbdf27efb487c3cf458cbf195/libutil.so.1 /root/.cache/zig/o/5060c49
3281f22a32e2a15702477b771/libc_nonshared.a /root/.cache/zig/o/892c1b189e8dcfb850ef01e67bac746e/crtn.o --allow-shlib-undefined
warning(link): failed to save linking hash digest file: PathAlreadyExists
error: FileNotFound
configure:3098: $? = 1
configure:3114: error: in `/data/otp_src_24.0/lib/crypto':
configure:3116: error: cannot compute suffix of executables: cannot compile and link
See `config.log' for more details

This seems to possible be a problem with Zig CC's cache? Happy to help dig deeper into what's going on here!

[doawoo]

Follow-up on this, the issue goes away once I force parallel configuration to be disabled, seems like some sort of race-condition

[folkertdev]

I have also gotten this error when running multiple instances of zig in parallel, I think it's a race-condition involving the global cache.

[andrewrk]

Duplicate of #9431 - I'm on it. High priority for the (already overdue) 0.9.0 release.