Although there is no public indication, work on porting Rust to iOS continues, moreover it is going to the final stage. So far I’ve got all required pieces working:

• fixed issue with mutexes crashing libgreen/rustuv runtime
• got a working patch for LLVM to support segmented stacks
• got working unwinding (another patch to LLVM compiler-rt)

In general, all major features are working now, providing first-class support of all Rust safety. There definitely might be small hiccups here and there but I believe they could be solved step-by-step, once the major part will be upstreamed to Rust master branch.

I need some time to clean up the code (as it has a lot of experimenting branches) and once patches to LLVM and compiler-rt landed - the last step will be rebase on current master and issue an PR.

I hope it will be finished this week.