gistfile1.txt

//// WORKS:
let mut octants: SubOctants = SVO::new_octants(|i| SVO::new_voxel(VoxelData::new(1)));
for ix in 0..8 {
    let result: SVO = try!{ self.read_svo_from() };
    mem::replace(&mut octants[ix as usize], Box::new(result));
}
Ok(SVO::Octants(octants))

//// ERROR: expected enum `svo::SVO`, found enum `std::result::Result`
let svo: SVO = SVO::new_octants(|i| {
    let result: SVO = try!{ self.read_svo_from() };
    result
});
Ok(svo)