rust-gpu工具链版本不匹配求助：配置一致仍报错

问题详情 #

已按要求复制指定内容的rust-toolchain文件到项目根目录，但执行cargo run构建时，仍触发工具链提交哈希不匹配错误，且本地配置文件内容与错误提示要求完全一致。

本地rust-toolchain文件内容 #

# If you see this, run `rustup self update` to get rustup 1.23 or newer.

# NOTE: above comment is for older `rustup` (before TOML support was added),
# which will treat the first line as the toolchain name, and therefore show it
# to the user in the error, instead of "error: invalid channel name '[toolchain]'".

[toolchain]
channel = "nightly-2022-10-29"
components = ["rust-src", "rustc-dev", "llvm-tools-preview"]
# commit_hash = 9565dfeb4e6225177bbe78f18cd48a7982f34401

# Whenever changing the nightly channel, update the commit hash above, and make
# sure to change REQUIRED_TOOLCHAIN in crates/rustc_codegen_spirv/src/build.rs also.

构建错误信息 #

error: failed to run custom build command for `rustc_codegen_spirv v0.4.0-alpha.17 (https://github.com/EmbarkStudios/rust-gpu#fabcbd9c)`

Caused by:
  process didn't exit successfully: `/home/makogan/rust_never_engine/target/debug/build/rustc_codegen_spirv-b4185236522e0515/build-script-build` (exit status: 1)
  --- stdout
  cargo:rerun-if-env-changed=RUSTGPU_SKIP_TOOLCHAIN_CHECK

  --- stderr
  error: wrong toolchain detected (found commit hash `e631891f7ad40eac3ef58ec3c2b57ecd81e40615`, expected `9565dfeb4e6225177bbe78f18cd48a7982f34401`).
  Make sure your `rust_toolchain` file contains the following:
  -------------
  [toolchain]
  channel = "nightly-2022-10-29"
  components = ["rust-src", "rustc-dev", "llvm-tools-preview"]

解决办法 #

• 启用指定的commit_hash：当前配置中commit_hash被注释，仅指定日期的nightly可能存在多个构建版本，rustup可能拉取了同日期但不同哈希的版本。取消注释commit_hash行，强制使用要求的工具链版本：

  commit_hash = 9565dfeb4e6225177bbe78f18cd48a7982f34401
  

• 清理并重新安装工具链：已安装的旧工具链可能仍被调用，执行以下命令重置：

  rustup toolchain uninstall nightly-2022-10-29
  rustup show
  

• 更新rustup版本：旧版rustup对TOML格式的rust-toolchain支持可能存在问题，执行rustup self update升级到最新版本，确保配置能被正确解析。
• 确认文件命名与位置：确保文件名为rust-toolchain（而非rust-toolchain.toml），且放置在项目根目录，避免rustup无法识别配置。

内容的提问来源于stack exchange，提问作者Makogan