Backtrace (most recent call first):
  File "<unknown>", line 0, in core::panicking::panic
  File "/var/home/gideon/rav1e/src/lrf.rs", line 1416, in rav1e::lrf::RestorationState::new
    uv_unit_log2 - uv_sb_v_log2,
  File "/var/home/gideon/rav1e/src/encoder.rs", line 384, in rav1e::encoder::FrameState<T>::new_with_frame
    let rs = RestorationState::new(fi, &frame);
  File "/var/home/gideon/rav1e/src/api/internal.rs", line 215, in rav1e::api::internal::FrameData<T>::new
    let fs = FrameState::new_with_frame(&fi, frame);
  File "/var/home/gideon/rav1e/src/api/internal.rs", line 426, in rav1e::api::internal::ContextInner<T>::set_frame_properties
    self.frame_data.insert(output_frameno, FrameData::new(fi, frame.clone()));
  File "/var/home/gideon/rav1e/src/api/internal.rs", line 744, in rav1e::api::internal::ContextInner<T>::compute_frame_invariants
    while self.set_frame_properties(self.next_lookahead_output_frameno).is_ok()
  File "/var/home/gideon/rav1e/src/api/internal.rs", line 348, in rav1e::api::internal::ContextInner<T>::send_frame
    self.compute_frame_invariants();
  File "/home/gideon/.cargo/registry/src/github.com-1ecc6299db9ec823/rayon-core-1.7.0/src/thread_pool/mod.rs", line 110, in rayon_core::thread_pool::ThreadPool::install::{{closure}}
    self.registry.in_worker(|_, _| op())
  File "/home/gideon/.cargo/registry/src/github.com-1ecc6299db9ec823/rayon-core-1.7.0/src/registry.rs", line 447, in rayon_core::registry::Registry::in_worker_cold::{{closure}}::{{closure}}
    op(&*worker_thread, true)
  File "/home/gideon/.cargo/registry/src/github.com-1ecc6299db9ec823/rayon-core-1.7.0/src/job.rs", line 113, in <rayon_core::job::StackJob<L,F,R> as rayon_core::job::Job>::execute::call::{{closure}}
    move || func(true)
  File "/builddir/build/BUILD/rustc-1.42.0-src/src/libstd/panic.rs", line 318, in <std::panic::AssertUnwindSafe<F> as core::ops::function::FnOnce<()>>::call_once
  File "/builddir/build/BUILD/rustc-1.42.0-src/src/libstd/panicking.rs", line 305, in std::panicking::try::do_call
  File "<unknown>", line 0, in __rust_maybe_catch_panic
  File "/builddir/build/BUILD/rustc-1.42.0-src/src/libstd/panicking.rs", line 281, in std::panicking::try
  File "/builddir/build/BUILD/rustc-1.42.0-src/src/libstd/panic.rs", line 394, in std::panic::catch_unwind
  File "/home/gideon/.cargo/registry/src/github.com-1ecc6299db9ec823/rayon-core-1.7.0/src/unwind.rs", line 17, in rayon_core::unwind::halt_unwinding
    panic::catch_unwind(AssertUnwindSafe(func))
  File "/home/gideon/.cargo/registry/src/github.com-1ecc6299db9ec823/rayon-core-1.7.0/src/job.rs", line 119, in <rayon_core::job::StackJob<L,F,R> as rayon_core::job::Job>::execute
    (*this.result.get()) = match unwind::halt_unwinding(call(func)) {
  File "/home/gideon/.cargo/registry/src/github.com-1ecc6299db9ec823/rayon-core-1.7.0/src/registry.rs", line 681, in rayon_core::registry::WorkerThread::execute
    job.execute();
  File "/home/gideon/.cargo/registry/src/github.com-1ecc6299db9ec823/rayon-core-1.7.0/src/registry.rs", line 665, in rayon_core::registry::WorkerThread::wait_until_cold
    self.execute(job);
  File "/home/gideon/.cargo/registry/src/github.com-1ecc6299db9ec823/rayon-core-1.7.0/src/registry.rs", line 639, in rayon_core::registry::WorkerThread::wait_until
    self.wait_until_cold(latch);
  File "/home/gideon/.cargo/registry/src/github.com-1ecc6299db9ec823/rayon-core-1.7.0/src/registry.rs", line 759, in rayon_core::registry::main_loop
    worker_thread.wait_until(&registry.terminate_latch);
  File "/home/gideon/.cargo/registry/src/github.com-1ecc6299db9ec823/rayon-core-1.7.0/src/registry.rs", line 56, in rayon_core::registry::ThreadBuilder::run
    unsafe { main_loop(self.worker, self.registry, self.index) }
  File "/home/gideon/.cargo/registry/src/github.com-1ecc6299db9ec823/rayon-core-1.7.0/src/registry.rs", line 101, in <rayon_core::registry::DefaultSpawn as rayon_core::registry::ThreadSpawn>::spawn::{{closure}}
    b.spawn(|| thread.run())?;
  File "/builddir/build/BUILD/rustc-1.42.0-src/src/libstd/sys_common/backtrace.rs", line 129, in std::sys_common::backtrace::__rust_begin_short_backtrace
  File "/builddir/build/BUILD/rustc-1.42.0-src/src/libstd/thread/mod.rs", line 475, in std::thread::Builder::spawn_unchecked::{{closure}}::{{closure}}
  File "/builddir/build/BUILD/rustc-1.42.0-src/src/libstd/panic.rs", line 318, in <std::panic::AssertUnwindSafe<F> as core::ops::function::FnOnce<()>>::call_once
  File "/builddir/build/BUILD/rustc-1.42.0-src/src/libstd/panicking.rs", line 305, in std::panicking::try::do_call
  File "<unknown>", line 0, in __rust_maybe_catch_panic
  File "/builddir/build/BUILD/rustc-1.42.0-src/src/libstd/panicking.rs", line 281, in std::panicking::try
  File "/builddir/build/BUILD/rustc-1.42.0-src/src/libstd/panic.rs", line 394, in std::panic::catch_unwind
  File "/builddir/build/BUILD/rustc-1.42.0-src/src/libstd/thread/mod.rs", line 474, in std::thread::Builder::spawn_unchecked::{{closure}}
  File "<unknown>", line 0, in <alloc::boxed::Box<F> as core::ops::function::FnOnce<A>>::call_once
  File "<unknown>", line 0, in std::sys::unix::thread::Thread::new::thread_start
  File "<unknown>", line 0, in start_thread
  File "<unknown>", line 0, in clone
  File "<unknown>", line 0, in <unknown>

The application panicked (crashed).
  attempt to subtract with overflow
in /var/home/gideon/rav1e/src/lrf.rs, line 1416
thread: <unnamed>