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Auto merge of #63166 - ksqsf:master, r=alexcrichton
Add Result::cloned{,_err} and Result::copied{,_err} This is a little nice addition to `Result`. 1. I'm not sure how useful are `cloned_err` and `copied_err`, but for the sake of completeness they are here. 2. Naming is similar to `map`/`map_err`. I thought about naming `cloned` as `cloned_ok` and add another method called `cloned` that clones both Ok and Err, but `cloned_ok` should be more prevalent than `cloned_both`.
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