Function rayon_core::join::join_recover_from_panic

unsafe fn join_recover_from_panic(
    worker_thread: &WorkerThread,
    job_b_latch: &SpinLatch<'_>,
    err: Box<dyn Any + Send>,
) -> !

If job A panics, we still cannot return until we are sure that job B is complete. This is because it may contain references into the enclosing stack frame(s).