Linking against `libpanic_unwind` failed on macos due to `lib.rmeta` being unrecognizable by `ld`

[NobodyXu]

The CI of jobslot failed when linking against libpanic_unwind on macos:

  = note: ld: in /Users/runner/.rustup/toolchains/1.52-x86_64-apple-darwin/lib/rustlib/x86_64-apple-darwin/lib/libpanic_unwind-2fe2b8cd4fa63c34.rlib(lib.rmeta), archive member 'lib.rmeta' with length 35552 is not mach-o or llvm bitcode file '/Users/runner/.rustup/toolchains/1.52-x86_64-apple-darwin/lib/rustlib/x86_64-apple-darwin/lib/libpanic_unwind-2fe2b8cd4fa63c34.rlib'
          clang: error: linker command failed with exit code 1 (use -v to see invocation)

Meta

cargo toolchain installed via rustup:

1.52-x86_64-apple-darwin

GHA runner info:

Current runner version: '2.300.2'
Operating System
  macOS
  12.6.2
  21G320
Runner Image
  Image: macos-12
  Version: 20230117.3
  Included Software: https://github.com/actions/runner-images/blob/macOS-12/20230117.3/images/macos/macos-12-Readme.md
  Image Release: https://github.com/actions/runner-images/releases/tag/macOS-12%2F20230117.3
Runner Image Provisioner
  2.0.98.1

[NobodyXu]

This error seems to also happen in sagebind/castaway#11

[bjorn3]

Duplicate of #105167

tl;dr: XCode 14 broke rustc 1.53 and older. You have to update to at least rustc 1.54 or downgrade to XCode 13 or older.

[NobodyXu]

@bjorn3 Thanks, I've already bumped it to 1.56 as required by windows-sys 0.48