fix CI job for building on MSRV #510
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It turns out that dtolnay/rust-toolchain sets the installed toolchain as the global default, but rustup prioritizes our rust-toolchain.toml. Instead, set an environment variable. RUSTUP_TOOLCHAIN has a higher priority than rust-toolchain.toml [^1]. [^1]: https://rust-lang.github.io/rustup/overrides.html#overrides
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Again, I briefly changed the branch protection rules, so that I could merge this PR without CI passing (there's already a fix for CI in #507). |
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It turns out that dtolnay/rust-toolchain sets the installed toolchain as the global default, but rustup prioritizes our rust-toolchain.toml. Instead, set an environment variable. RUSTUP_TOOLCHAIN has a higher priority than rust-toolchain.toml 1.
Footnotes
https://rust-lang.github.io/rustup/overrides.html#overrides ↩