let mut temp_vec = ManuallyDrop::new(iter.collect::<Vec<u32>>());
                        unsafe {
                            Vec::from_raw_parts(
                                temp_vec.as_mut_ptr() as *mut [u32; 3],
                                temp_vec.len() / 3,
                                temp_vec.capacity() / 3,
                            )
                        }

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