Add #[must_use] to Option and Result overlap methods#79006

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bobrippling wants to merge 2 commits intorust-lang:masterfrom

bobrippling:must-use-option-result

Commits on Nov 12, 2020

Add #[must_use] to Option and Result overlap methods
bobrippling
committed

Commits on Nov 13, 2020

Fix .ok() usage
bobrippling
committed