warning: variable does not need to be mutable
   --> src/payload/mod.rs:146:19
    |
146 |     pub fn unwrap(mut self, payload_key: &PayloadKey) -> Result<Self> {
    |                   ----^^^^
    |                   |
    |                   help: remove this `mut`

warning: unused variable: `payload_key`
   --> src/payload/mod.rs:146:29
    |
146 |     pub fn unwrap(mut self, payload_key: &PayloadKey) -> Result<Self> {
    |                             ^^^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_payload_key`

warning: variable does not need to be mutable
   --> src/payload/mod.rs:122:29
    |
122 |     fn add_encryption_layer(mut self, payload_enc_key: &PayloadKey) -> Result<Self> {
    |                             ----^^^^
    |                             |
    |                             help: remove this `mut`
    |
    = note: `#[warn(unused_mut)]` on by default

warning: unused variable: `payload_enc_key`
   --> src/payload/mod.rs:122:39
    |
122 |     fn add_encryption_layer(mut self, payload_enc_key: &PayloadKey) -> Result<Self> {
    |                                       ^^^^^^^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_payload_enc_key`
    |
    = note: `#[warn(unused_variables)]` on by default

warning: unused import: `lioness::Lioness`
  --> src/payload/mod.rs:21:5
   |
21 | use lioness::Lioness;
   |     ^^^^^^^^^^^^^^^^

warning: unused import: `chacha::ChaCha`
  --> src/payload/mod.rs:20:5
   |
20 | use chacha::ChaCha; // we might want to swap this one with a different implementation
   |     ^^^^^^^^^^^^^^

warning: unused import: `blake2::VarBlake2b`
  --> src/payload/mod.rs:19:5
   |
19 | use blake2::VarBlake2b;
   |     ^^^^^^^^^^^^^^^^^^

warning: unused import: `arrayref::array_ref`
  --> src/payload/mod.rs:18:5
   |
18 | use arrayref::array_ref;
   |     ^^^^^^^^^^^^^^^^^^^
   |
   = note: `#[warn(unused_imports)]` on by default