Consider recommending autocfg
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matklad commented
autocfg is a new-ish crate in the space of compiler version detection:
https://crates.io/crates/autocfg/
it's main difference is that it focuses on feature detection (rather then version detection) by default. For this reason, I would generally recommend using autocfg rather than rustc_version. If maintainers of rustc_version think that way, perhaps it makes sense to point towards this crate from readme?
djc commented
I've added a mention to the README, thanks for the suggestion!