error: useless use of `vec!`
  --> tests/test_deserialize.rs:84:19
   |
84 |     for config in vec![qs::Config::new(5, true), qs::Config::new(5, false)] {
   |                   ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: you can use an array directly: `[qs::Config::new(5, true), qs::Config::new(5, false)]`
   |
   = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#useless_vec
   = note: `-D clippy::useless-vec` implied by `-D warnings`
   = help: to override `-D warnings` add `#[allow(clippy::useless_vec)]`