noexcept is a C++ feature that's easy to misuse and can lead to bugs. We are planning to write documentation for noexcept in SERVER-70148 : we should also ensure this documentation is difficult to miss. Ideally, we would have a Github action that looks for additional noexcept usages in the codebase. If it detects a noexcept usage, it should add a comment to ask the author and reviewer to eensure noexcept usage is correct (and link the doc).