rustdoc: add fmt_json helper and use it to avoid allocations#148950
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lolbinarycat wants to merge 1 commit intorust-lang:mainfrom
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rustdoc: add fmt_json helper and use it to avoid allocations#148950lolbinarycat wants to merge 1 commit intorust-lang:mainfrom
lolbinarycat wants to merge 1 commit intorust-lang:mainfrom
