RUST_VERSION and RUST_CHANNEL may disagree in presence of rust-toolchain.toml

[imp]

RUST_VERSION is computed by running rustc -V, while RUST_CHANNEL by running rustup default
In presence of rust-toolchain.toml these may disagree.
Example: I have nightly configured by default (hence rustup default reports nightly channel), however in my crate I have

rust-toolchain.toml

[toolchain]
channel = "stable"

So, rustc -V reports the current stable version (as installed).
Understanding the discrepancy when these are reported by the running binary may be a tough exercise

[baoyachi]

Sorry,I haven't thought about this before. Thank for you report.

I'm try edit it.

[baoyachi]

It will be fix next version

[imp]

Thanks so much!

[baoyachi]

fix reference: https://rust-lang.github.io/rustup/overrides.html#toolchain-override-shorthand

Unexpected cause e.g

• cargo +nightly [option]
• cargo +stable [option]
• use rust-toolchain.toml file redefine channel

how to fix

• get std::env::vars("RUSTUP_TOOLCHAIN") in shadow-rs

@imp

[baoyachi]

It's fixed with new version

[dependencies]
shadow-rs = "0.8.1"