warning: the function `message_decrypt_prekey` doesn't need a mutable reference
   --> libsignal-service/src/cipher.rs:184:21
    |
184 |                     &mut self.protocol_store.clone(),
    |                     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
    |
    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#unnecessary_mut_passed
    = note: `#[warn(clippy::unnecessary_mut_passed)]` on by default

warning: called `is_none()` after searching an `Iterator` with `find`
   --> libsignal-service/src/account_manager.rs:727:24
    |
727 |                       if pni_registration_ids
    |  ________________________^
728 | |                         .iter()
729 | |                         .find(|(_k, v)| **v == regid)
730 | |                         .is_none()
    | |__________________________________^
    |
    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#search_is_some
    = note: `#[warn(clippy::search_is_some)]` on by default
help: consider using
    |
727 ~                     if !pni_registration_ids
728 +                         .iter().any(|(_k, v)| **v == regid)
    |

warning: use of deprecated method `chrono::NaiveDateTime::timestamp`: use `.and_utc().timestamp()` instead
   --> libsignal-service/src/groups_v2/manager.rs:333:14
    |
333 |             .timestamp() as u64
    |              ^^^^^^^^^
    |
    = note: `#[warn(deprecated)]` on by default