Sentry (otherwise a Python application) built their Symbolicator service in Rust because it was a better fit for the domain. Probably also because Armin Ronacher has become a fan of the language and simply wanted to [1]. Now, Sentry is like 100 employees or something, so it's obviously a way more agile organization that Shopify at 10x the size, but having more limited resources is also a reason to avoid spreading yourself too thin.

1: https://www.softwaresessions.com/episodes/rust-in-production...