[Migrated] `cargo clippy` breaks the nested `cargo build` from `spirv-builder`.

Issue automatically imported from old repo: https://github.com/EmbarkStudios/rust-gpu/issues/864
Old labels: t: bug
Originally creatd by hatoo on 2022-04-16T15:06:01Z

Expected Behaviour

cargo clippy works without a crash in this project.

It worked fine in older rust-gpu.

Example & Steps To Reproduce

1. Clone this
2. cargo clippy
3. Got error

PS C:\Users\hato2\Desktop\zenn-content\rasterization-example> cargo clippy
   Compiling rasterization-example v0.1.0 (C:\Users\hato2\Desktop\zenn-content\rasterization-example)
error: failed to run custom build command for `rasterization-example v0.1.0 (C:\Users\hato2\Desktop\zenn-content\rasterization-example)`

Caused by:
  process didn't exit successfully: `C:\Users\hato2\Desktop\zenn-content\rasterization-example\target\debug\build\rasterization-example-bf4f4e1cfd480af7\build-script-build` (exit code: 1)
  --- stderr
     Compiling core v0.0.0 (C:\Users\hato2\.rustup\toolchains\nightly-2022-04-11-x86_64-pc-windows-msvc\lib\rustlib\src\rust\library\core)
     Compiling rustc-std-workspace-core v1.99.0 (C:\Users\hato2\.rustup\toolchains\nightly-2022-04-11-x86_64-pc-windows-msvc\lib\rustlib\src\rust\library\rustc-std-workspace-core)
     Compiling compiler_builtins v0.1.70
     Compiling libm v0.2.1
     Compiling bitflags v1.3.2
     Compiling spirv-types v0.4.0-alpha.12 (https://github.com/EmbarkStudios/rust-gpu.git#11e21c64)
     Compiling num-traits v0.2.14
     Compiling glam v0.20.2
     Compiling spirv-std v0.4.0-alpha.12 (https://github.com/EmbarkStudios/rust-gpu.git#11e21c64)
     Compiling shader v0.1.0 (C:\Users\hato2\Desktop\zenn-content\rasterization-example\shader)
  thread 'rustc' panicked at 'not yet implemented', C:\Users\hato2\.cargo\git\checkouts\rust-gpu-e0a37a82a46176e6\116bf9c\crates\rustc_codegen_spirv\src\codegen_cx\mod.rs:564:9
  note: run with `RUST_BACKTRACE=1` environment variable to display a backtrace
  error: internal compiler error: unexpected panic

  note: the compiler unexpectedly panicked. this is a bug.

  note: we would appreciate a bug report: https://github.com/EmbarkStudios/rust-gpu/issues/new

  note: rustc 1.62.0-nightly (1f7fb6413 2022-04-10) running on x86_64-pc-windows-msvc

  note: compiler flags: --crate-type lib --crate-type dylib -C opt-level=3 -C embed-bitcode=no -Z unstable-options -Z codegen-backend=C:\Users\hato2\Desktop\zenn-content\rasterization-example\target\debug\rustc_codegen_spirv.dll -C symbol-mangling-version=v0

  note: some of the compiler flags provided by cargo are hidden

  query stack during panic:
  end of query stack
  note: `rust-gpu` version 0.4.0-alpha.12

  error: could not compile `shader`
  Error: BuildFailed

System Info

• Rust: rustc 1.62.0-nightly (1f7fb6413 2022-04-10)
• OS: Windows 11
• GPU: RTX 2080ti
• SPIR-V: SPIRV-Tools v2022.2-dev v2022.1-4-g20b122b2

Backtrace

<backtrace>

Reproduce the failure with cargo clippy in the linked rasterization-example project using the reported Rust and rust-gpu revisions. Start at crates/rustc_codegen_spirv/src/codegen_cx/mod.rs:564, where the panic is reported, and trace the nested build path from spirv-builder. Done means the example completes cargo clippy without the compiler panic.