For my use-case, I don't regret choosing Rust for my project but I know that these guys already do:

[0] http://way-cooler.org/blog/2019/04/29/rewriting-way-cooler-i...

[1] https://blogs.dust3d.org/2019/03/13/why-i-rewrote-the-mesh-g...

[2] https://drewdevault.com/2019/03/25/Rust-is-not-a-good-C-repl...