Error libunwind: __unw_add_dynamic_fde: bad fde: FDE is really a CIE

[kate-goldenring]

Musl builds of the shim are throwing a libunwind error at startup. The app still works:

$ curl -L https://github.com/fermyon/spin/releases/download/canary/spin-canary-static-linux-amd64.tar.gz | tar -xvzf -
$ ./spin up --from ttl.sh/spin-foo-app:48h
libunwind: __unw_add_dynamic_fde: bad fde: FDE is really a CIE

Serving http://127.0.0.1:3000
Available Routes:
  foo: http://127.0.0.1:3000/foo

This may be due to Wasmtime failing to detect which unwind implementation to use (libgcc-vs-libunwind) which was supposed to be resolved by bytecodealliance/wasmtime#8028

[kate-goldenring]

This should be resolved by pulling in Wasmtime with this commit: bytecodealliance/wasmtime#9479

Alternatively, we can set .native_unwind_info(false) on the wasmtime Config here, which would silence this warning.