Below is a list of nightly features used in order of (roughly) to-be-solved-first to to-be-solved-last/easiest-to-solve-now, in other words the ones at the top are harder to solve so start with those (no point in losing functionality if we're still on nightly for another feature).
Below is a list of nightly features used in order of (roughly) to-be-solved-first to to-be-solved-last/easiest-to-solve-now, in other words the ones at the top are harder to solve so start with those (no point in losing functionality if we're still on nightly for another feature).
slice_ptr_get: used in various places.ptr_sub_ptr: only used inReadBuf::release.maybe_uninit_array_assume_init: used in theBufMutSliceimplementation for arrays and tuples.maybe_uninit_uninit_array: used in theBufMutSliceimplementation for arrays and tuples.io_error_more: used in theFrom<QueueFull>impl forQueueFull, could useio::ErrorKind::Otherfor the time being.async_iterator: used in multishot futures, could be replaced with a separatepoll_nextmethod.new_uninit: used in a couple ofFutures, could useBox::new(MaybeUninit::new()), although I think that's less efficient.const_cmp: only used inConfig::with_idle_timeout, could be made non-const.const_mut_refs: used inSubmission::set_user_dataandSubmission::set_buffer_select, could be made non-const.mutex_unlock: used inSubmissionQueue::add_no_resultandReadBuf::release, can easily be replaced with a call todrop(and maybe a comment).