Recently Rust nightly support -Zcheck-cfg option to -- Specify scope of compile-time checking of cfg names/values. It can be attached to command line option as -Zcheck-cfg=features,names,values,output; but can't be added to config.toml unstable section. Such as in .cargo/config.toml
[unstable]
check-cfg=["features","names","values","output"]
compiler says error: invalid type: string "features", expected a boolean
Anyone knows how to set it up?
For features checking I think you should use check-cfg-features = true.
check-cfg-features has been deprecated.
https://github.com/rust-lang/rust/issues/82450#issuecomment-1133403998
The new --check-cfg covers all features names values ...
https://doc.rust-lang.org/nightly/unstable-book/compiler-flags/check-cfg.html
But config options still confuse me a lot.
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