19     let mut to_write = Vec::with_capacity(16 * 128);  in test_writev()
30     let mut iovecs = Vec::new();  in test_writev()
46     let mut read_buf: Vec<u8> = iter::repeat(0u8).take(128 * 16).collect();  in test_writev()
71     let mut storage = Vec::new();  in test_readv()
80         let v: Vec<u8> = iter::repeat(0u8).take(vec_len).collect();  in test_readv()
84     let mut iovecs = Vec::with_capacity(storage.len());  in test_readv()
95     let mut read_buf = Vec::with_capacity(to_write.len());  in test_readv()
115     let mut file_content = Vec::new();  in test_pwrite()
136     let file_content: Vec<u8> = (0..64).collect();  in test_pread()
141     let expected: Vec<_> = (16..32).collect();  in test_pread()
150     let to_write: Vec<u8> = (0..128).collect();  in test_pwritev()
151     let expected: Vec<u8> = [vec![0; 100], to_write.clone()].concat();  in test_pwritev()
175     let mut contents = Vec::new();  in test_pwritev()
185     let to_write: Vec<u8> = (0..200).collect();  in test_preadv()
186     let expected: Vec<u8> = (100..200).collect();  in test_preadv()
201     let mut buffers: Vec<Vec<u8>> = vec![vec![0; 24], vec![0; 1], vec![0; 75]];  in test_preadv()
205         let mut iovecs: Vec<_> = buffers  in test_preadv()