Automate checking 'last 3 Rust versions' on CI #483
Merged
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This PR replaces unmaintained actions/toolchain with dtolnay/rust-toolchain. It is well-maintained and supports 'stable minus N releases' syntax to specify toolchain version so that we don't need to maintain the
MIN_SUPPORTED_RUST_VERSION
variable manually. In addition, I updatedactions/checkout
since v2 seems no longer maintained in favor of v3.I confirmed all jobs passed by this PR: https://github.com/rhysd/syntect/actions/runs/5453682953
Current master branch failed since Rust version was too old for some dependencies.