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León Orell Valerian Liehr
ba420062f1
Mark `std::fmt::from_fn` as `#[must_use]` While working on #135494 I managed to shoot my own foot a few times by forgetting to actually use the result of `fmt::from_fn`, so I think a `#[must_use]` could be appropriate! Didn't have a good message to put in the attr so left it blank, still unstable so we can come back to it I guess? cc #117729 (and a huge +1 for getting it stabilized, it's very useful IMHO)