Add new failed_merged_doctest_compilation rustdoc lint#148866

GuillaumeGomez wants to merge 2 commits intorust-lang:mainrust-lang/rust:mainfrom

GuillaumeGomez:rustdoc-failed_merged_doctest_compilationGuillaumeGomez/rust:rustdoc-failed_merged_doctest_compilationCopy head branch name to clipboard