I've seen rust compiler bug once and that was long before 1.0. The only issue now is that some important API's are not yet declared stable (RFC still being open), so many 3rd-party libraries target nightly and won't work in stable. This is however matter or 1 or 2 releases, and proves that rust developers take this matter seriously and don't wont to stabilize anything they aren't 100% sure. For all practical purposes rust is usable now, and more and more people are using it - certainly more then 3. Generally looking at rust projects on github, most of issues are feature requests. I don't see issues with crashes or panics, while I know plenty for similar projects written in C, at least in their early days.