Related: just tried to switch to Rust when starting a new project. The main motivation was the combination of fearless concurrency and exhaustive error handling - things that were very painful in the more mature endeavor.

Gave up after 3 days for 3 reasons:

1. Refactoring and IDE tooling in general are still lightyears away from JetBrains tooling and a few astronomical units away from Visual Studio. Extract function barely works.

2. Crates with non-Rust dependencies are nearly impossible to debug as debuggers don't evaluate expressions. So, if you have a Rust wrapper for Ogg reader, you can't look at ogg_file.duration() in the debugger because that requires function evaluation.

3. In contrast to .NET and NuGet ecosystem, non-Rust dependencies typically don't ship with precompiled binaries, meaning you basically have to have fun getting the right C++ compilers, CMake, sometimes even external SDKs and manually setting up your environment variables to get them to build.

With these roadblocks I would never have gotten the "mature" project to the point, where dealing with hard to debug concurrency issues and funky unforeseen errors became necessary.