Guide doesn't seem to work

Commencez par le guide writing-shader-crates à l’URL indiquée et comparez ses instructions avec les erreurs signalées concernant la toolchain rustc_codegen_spirv et Cargo.lock. Le travail est terminé lorsque le guide fournit une configuration reproductible qui évite les erreurs signalées ou documente clairement les versions et limitations requises.

Apologies in advance for a mess of an issue, I'm struggling to get started with rust-gpu and running in to different issues with the docs.

I tried to follow https://rust-gpu.github.io/rust-gpu/book/writing-shader-crates.html but something seems off there and I'm not sure what, been struggling with it for hours.

First error I get is

error: failed to run custom build command for `rustc_codegen_spirv v0.9.0`

Caused by:
  process didn't exit successfully: `[path]/builder/target/debug/build/rustc_codegen_spirv-ffa44511fcb54869/build-script-build` (exit status: 1)
  --- stdout
  cargo:rerun-if-env-changed=RUSTGPU_SKIP_TOOLCHAIN_CHECK

  --- stderr
  error: wrong toolchain detected (found commit hash `be19eda0dc4c22c5cf5f1b48fd163acf9bd4b0a6`, expected `1a5f8bce74ee432f7cc3aa131bc3d6920e06de10`).
  Make sure your `rust-toolchain.toml` file contains the following:
  -------------
  [toolchain]
  channel = "nightly-2023-05-27"
  components = ["rust-src", "rustc-dev", "llvm-tools-preview"]
  -------------

So I updated channel to "nightly-2023-05-27" instead of the one suggested in the docs, but then I get:

error: failed to parse lock file at: [path]/builder/Cargo.lock

Caused by:
  lock file version `4` was found, but this version of Cargo does not understand this lock file, perhaps Cargo needs to be updated?

Changing Cargo.lock version to 3 gives:

error: failed to run custom build command for `builder v0.1.0 ([path]/builder)`

Caused by:
  process didn't exit successfully: `[path]/builder/target/debug/build/builder-ab9d01841427145d/build-script-build` (exit status: 1)
  --- stdout
  cargo:rerun-if-env-changed=RUSTGPU_CODEGEN_ARGS
  cargo:rerun-if-env-changed=RUSTGPU_RUSTFLAGS

  --- stderr
  error: failed to parse lock file at: [path]/shader/Cargo.lock

  Caused by:
    lock file version `4` was found, but this version of Cargo does not understand this lock file, perhaps Cargo needs to be updated?
  Error: BuildFailed

I tried to play with some more settings, and kept bumping in to

  error: missing libm intrinsic _RNvMNtNtNtCsbtJY5FUAdnQ_4libm4math7support3bigNtB2_4u2566signed, which is math::support::big::u256::signed

  error: missing libm intrinsic _RNvXs2_NtNtNtCsbtJY5FUAdnQ_4libm4math7support3bigNtB5_4u256NtNtNtCsktVOBji75Go_4core3ops5arith3Add3add, which is <math::support::big::u256 as core::ops::Add>::add

  error: missing libm intrinsic _RNvXs3_NtNtNtCsbtJY5FUAdnQ_4libm4math7support3bigNtB5_4u256INtNtNtCsktVOBji75Go_4core3ops3bit3ShrmE3shr, which is <math::support::big::u256 as core::ops::Shr<u32>>::shr

  error: missing libm intrinsic _RNvXs4_NtNtNtCsbtJY5FUAdnQ_4libm4math7support3bigoNtNtB7_10int_traits4HInt5widen, which is math::support::big::<impl math::support::int_traits::HInt for u128>::widen

  error: missing libm intrinsic _RNvXs4_NtNtNtCsbtJY5FUAdnQ_4libm4math7support3bigoNtNtB7_10int_traits4HInt10zero_widen, which is math::support::big::<impl math::support::int_traits::HInt for u128>::zero_widen
...

Again, apologies for this mess. I honestly can't figure out what the root cause is and how to get around it.

Any pointers?