Add a MustUse trait to complement #[must_use]#71816
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jonas-schievink wants to merge 3 commits intorust-lang:masterfrom
jonas-schievink:must-use-trait
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Add a `MustUse` trait to complement `#[must_use]`#71816jonas-schievink wants to merge 3 commits intorust-lang:masterfrom jonas-schievink:must-use-trait
jonas-schievink wants to merge 3 commits intorust-lang:masterfrom
jonas-schievink:must-use-trait
