warning: large size difference between variants
  --> src/v2/udp/mod.rs:14:1
   |
14 | / enum CipherVariant {
15 | |     AesGcm(AesGcmCipher),
   | |     -------------------- the largest variant contains at least 560 bytes
16 | |     ChaCha20Poly1305(ChaCha20Poly1305Cipher),
   | |     ---------------------------------------- the second-largest variant contains at least 32 bytes
17 | |     #[cfg(feature = "v2-extra")]
18 | |     ChaCha8Poly1305(ChaCha8Poly1305Cipher),
19 | | }
   | |_^ the entire enum is at least 560 bytes
   |
   = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#large_enum_variant
   = note: `#[warn(clippy::large_enum_variant)]` on by default
help: consider boxing the large fields to reduce the total size of the enum
   |
15 |     AesGcm(Box<AesGcmCipher>),
   |            ~~~~~~~~~~~~~~~~~

warning: the borrowed expression implements the required traits
  --> src/v1/cipher.rs:45:22
   |
45 |             m.update(&digest);
   |                      ^^^^^^^ help: change this to: `digest`
   |
   = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#needless_borrows_for_generic_args
   = note: `#[warn(clippy::needless_borrows_for_generic_args)]` on by default

warning: use Vec::sort_by_key here instead
  --> src/v1/streamcipher/table.rs:31:13
   |
31 |             table.sort_by(|x, y| (a % (*x + i)).cmp(&(a % (*y + i))))
   |             ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: try: `table.sort_by_key(|x| a % (*x + i))`
   |
   = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#unnecessary_sort_by
   = note: `#[warn(clippy::unnecessary_sort_by)]` on by default

warning: the loop variable `counter` is only used to index `data`
  --> src/v1/streamcipher/crypto/rc4.rs:66:24
   |
66 |         for counter in 0..data.len() {
   |                        ^^^^^^^^^^^^^
   |
   = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#needless_range_loop
   = note: `#[warn(clippy::needless_range_loop)]` on by default
help: consider using an iterator
   |
66 |         for <item> in &mut data {
   |             ~~~~~~    ~~~~~~~~~

warning: casting to the same type is unnecessary (`usize` -> `usize`)
  --> src/v1/streamcipher/crypto/rc4.rs:53:24
   |
53 |             state.swap(counter as usize, index2 as usize);
   |                        ^^^^^^^^^^^^^^^^ help: try: `counter`
   |
   = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#unnecessary_cast
   = note: `#[warn(clippy::unnecessary_cast)]` on by default

warning: constants have by default a `'static` lifetime
   --> src/v1/cipher.rs:113:37
    |
113 |                 const SUBKEY_INFO: &'static [u8] = b"ss-subkey";
    |                                    -^^^^^^^----- help: consider removing `'static`: `&[u8]`
    |
    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#redundant_static_lifetimes
    = note: `#[warn(clippy::redundant_static_lifetimes)]` on by default