message: Ignore clippy lint
diff: #![cfg_attr(feature = "cargo-clippy", allow(clippy::missing_panics_doc))]
  #![cfg_attr(feature = "cargo-clippy", allow(clippy::missing_const_for_fn))]
  #![cfg_attr(feature = "cargo-clippy", allow(clippy::option_if_let_else))]
  +#![cfg_attr(feature = "cargo-clippy", allow(clippy::return_self_not_must_use))]
  #![cfg_attr(all(feature = "cargo-clippy", test), allow(clippy::cyclomatic_complexity))]
  #![cfg_attr(not(test), allow(dead_code))]
  // To build docs locally:
  