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Suggestion for .cargo/config.toml Explanation (#974)

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I was confused on what the 'unstable' section of my .cargo/config.toml file should look like once I started getting linking errors when going through the third post. It turned out it was because I overwrote the previous 'unstable' configuration with the latter one. 

In other words, I thought we were to overwrite "build-std = ["core", "compiler_builtins"]" under the "unstable" config, with "build-std-features = ["compiler-builtins-mem"]" and NOT have both present. 

I think this makes it more clear that both are supposed to be present.
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Mostafa Elbannan
2021-04-27 03:18:38 -06:00
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@@ -306,6 +306,7 @@ Fortunately, the `compiler_builtins` crate already contains implementations for
[unstable] [unstable]
build-std-features = ["compiler-builtins-mem"] build-std-features = ["compiler-builtins-mem"]
build-std = ["core", "compiler_builtins"]
``` ```
(Support for the `compiler-builtins-mem` feature was only [added very recently](https://github.com/rust-lang/rust/pull/77284), so you need at least Rust nightly `2020-09-30` for it.) (Support for the `compiler-builtins-mem` feature was only [added very recently](https://github.com/rust-lang/rust/pull/77284), so you need at least Rust nightly `2020-09-30` for it.)