[Perceptes]

The requirement of a nightly compiler for many of my projects has been my biggest problem with Rust for both surveys so far. I recently made an issue for my largest Rust project, Ruma, that enumerates all the things we're waiting on from the nightly compiler, as well as other library/ecosystem maturity issues. Just in case anyone is curious what some specific problems are for a real project: https://github.com/ruma/ruma/issues/189