warning: parameter is only used in recursion
   --> src/main.rs:150:22
    |
150 | fn print_parse_error(input: &str, e: &ErrorTree<String>) {
    |                      ^^^^^ help: if this is intentional, prefix it with an underscore: `_input`
    |
note: parameter used here
   --> src/main.rs:161:31
    |
161 |             print_parse_error(input, base);
    |                               ^^^^^
...
180 |                         print_parse_error(input, alt);
    |                                           ^^^^^
    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#only_used_in_recursion
    = note: `#[warn(clippy::only_used_in_recursion)]` on by default

warning: single-character string constant used as pattern
  --> src/main.rs:44:48
   |
44 |     .authors(env!("CARGO_PKG_AUTHORS").replace(":", ", "))
   |                                                ^^^ help: consider using a `char`: `':'`
   |
   = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#single_char_pattern
   = note: `#[warn(clippy::single_char_pattern)]` on by default

warning: this `impl` can be derived
  --> src/mapping.rs:61:1
   |
61 | / impl Default for KeyStatus {
62 | |     fn default() -> Self {
63 | |         KeyStatus::Up
64 | |     }
65 | | }
   | |_^
   |
   = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#derivable_impls
   = note: `#[warn(clippy::derivable_impls)]` on by default
   = help: remove the manual implementation...
help: ...and instead derive it...
   |
40 + #[derive(Default)]
41 | enum KeyStatus {
   |
help: ...and mark the default variant
   |
42 ~     #[default]
43 ~     Up,
   |

warning: this function has too many arguments (8/7)
  --> src/joystick.rs:15:5
   |
15 | /     fn handle(
16 | |         &mut self,
17 | |         stick: Vector2<f64>,
18 | |         side: StickSide,
...  |
23 | |         dt: Duration,
24 | |     );
   | |_____^
   |
   = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#too_many_arguments
   = note: `#[warn(clippy::too_many_arguments)]` on by default

warning: `Box::new(_)` of default value
   --> src/engine.rs:225:42
    |
225 |                 GyroSpace::PlayerTurn => Box::new(PlayerSpace::default()),
    |                                          ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: try: `Box::<PlayerSpace>::default()`
    |
    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#box_default

warning: use of `default` to create a unit struct
   --> src/engine.rs:223:60
    |
223 |                 GyroSpace::WorldTurn => Box::new(WorldSpace::default()),
    |                                                            ^^^^^^^^^^^ help: remove this call to `default`
    |
    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#default_constructed_unit_structs

warning: `Box::new(_)` of default value
   --> src/engine.rs:223:41
    |
223 |                 GyroSpace::WorldTurn => Box::new(WorldSpace::default()),
    |                                         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: try: `Box::<WorldSpace>::default()`
    |
    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#box_default

warning: use of `default` to create a unit struct
   --> src/engine.rs:222:56
    |
222 |                 GyroSpace::Local => Box::new(LocalSpace::default()),
    |                                                        ^^^^^^^^^^^ help: remove this call to `default`
    |
    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#default_constructed_unit_structs
    = note: `#[warn(clippy::default_constructed_unit_structs)]` on by default

warning: `Box::new(_)` of default value
   --> src/engine.rs:222:37
    |
222 |                 GyroSpace::Local => Box::new(LocalSpace::default()),
    |                                     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: try: `Box::<LocalSpace>::default()`
    |
    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#box_default
    = note: `#[warn(clippy::box_default)]` on by default

warning: unnecessary closure used to substitute value for `Option::None`
  --> src/config/mod.rs:84:15
   |
84 |           match action.event_mod.unwrap_or_else(|| {
   |  _______________^
85 | |             if first {
86 | |                 if actions.len() == 1 {
87 | |                     Start
...  |
93 | |             }
94 | |         }) {
   | |__________^
   |
   = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#unnecessary_lazy_evaluations
   = note: `#[warn(clippy::unnecessary_lazy_evaluations)]` on by default
help: use `unwrap_or(..)` instead
   |
84 ~         match action.event_mod.unwrap_or({
85 +             if first {
86 +                 if actions.len() == 1 {
87 +                     Start
88 +                 } else {
89 +                     Tap
90 +                 }
91 +             } else {
92 +                 Hold
93 +             }
94 ~         }) {
   |