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[INFO] [stdout] warning: struct `PositiveBackend` is never constructed
[INFO] [stdout]  --> examples/static-dispatch-benchmark.rs:8:8
[INFO] [stdout]   |
[INFO] [stdout] 8 | struct PositiveBackend;
[INFO] [stdout]   |        ^^^^^^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(dead_code)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `process_int` is never used
[INFO] [stdout]    --> examples/functions.rs:120:4
[INFO] [stdout]     |
[INFO] [stdout] 120 | fn process_int<F>(a: i32, b: i32, f: F) -> i32
[INFO] [stdout]     |    ^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(dead_code)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `s2`
[INFO] [stdout]  --> examples/basics.rs:4:9
[INFO] [stdout]   |
[INFO] [stdout] 4 |     let s2 = s1; // the value is moved from s1 to s2, s1 is no longer valid
[INFO] [stdout]   |         ^^ help: if this is intentional, prefix it with an underscore: `_s2`
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_variables)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `borrow` is never used
[INFO] [stdout]  --> examples/collections.rs:7:4
[INFO] [stdout]   |
[INFO] [stdout] 7 | fn borrow(i : &i32) {
[INFO] [stdout]   |    ^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(dead_code)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `crate::space::ship::Spaceship`
[INFO] [stdout]  --> examples/modules.rs:1:5
[INFO] [stdout]   |
[INFO] [stdout] 1 | use crate::space::ship::Spaceship;
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `ex2` is never used
[INFO] [stdout]   --> examples/lifetime.rs:33:4
[INFO] [stdout]    |
[INFO] [stdout] 33 | fn ex2() {
[INFO] [stdout]    |    ^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(dead_code)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct `Introduction` is never constructed
[INFO] [stdout]   --> examples/lifetime.rs:42:8
[INFO] [stdout]    |
[INFO] [stdout] 42 | struct Introduction<'a> {
[INFO] [stdout]    |        ^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: method `print` is never used
[INFO] [stdout]   --> examples/lifetime.rs:47:8
[INFO] [stdout]    |
[INFO] [stdout] 46 | impl<'a> Introduction<'a> {
[INFO] [stdout]    | ------------------------- method in this implementation
[INFO] [stdout] 47 |     fn print(&self) {
[INFO] [stdout]    |        ^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `get_sample_text` is never used
[INFO] [stdout]   --> examples/lifetime.rs:53:4
[INFO] [stdout]    |
[INFO] [stdout] 53 | fn get_sample_text() -> &'static str {
[INFO] [stdout]    |    ^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct `Rectangle` is never constructed
[INFO] [stdout]   --> examples/errors.rs:10:8
[INFO] [stdout]    |
[INFO] [stdout] 10 | struct Rectangle {
[INFO] [stdout]    |        ^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(dead_code)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: constant `DEFAULT_WIDTH` is never used
[INFO] [stdout]   --> examples/errors.rs:15:7
[INFO] [stdout]    |
[INFO] [stdout] 15 | const DEFAULT_WIDTH: f64 = 1.0;
[INFO] [stdout]    |       ^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: constant `DEFAULT_HEIGHT` is never used
[INFO] [stdout]   --> examples/errors.rs:16:7
[INFO] [stdout]    |
[INFO] [stdout] 16 | const DEFAULT_HEIGHT: f64 = 1.0;
[INFO] [stdout]    |       ^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated items `new`, `area`, `convert_to_int`, and `read_from_file` are never used
[INFO] [stdout]   --> examples/errors.rs:18:8
[INFO] [stdout]    |
[INFO] [stdout] 17 | impl Rectangle {
[INFO] [stdout]    | -------------- associated items in this implementation
[INFO] [stdout] 18 |     fn new(width : f64, height : f64) -> Result<Rectangle> {
[INFO] [stdout]    |        ^^^
[INFO] [stdout] ...
[INFO] [stdout] 26 |     fn area(&self) -> f64 {
[INFO] [stdout]    |        ^^^^
[INFO] [stdout] ...
[INFO] [stdout] 30 |     fn convert_to_int(&self) -> Result<(u32, u32)> {
[INFO] [stdout]    |        ^^^^^^^^^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 42 |     fn read_from_file(path : &str) -> Result<Rectangle> {
[INFO] [stdout]    |        ^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `bigger` is never used
[INFO] [stdout]   --> examples/errors.rs:59:4
[INFO] [stdout]    |
[INFO] [stdout] 59 | fn bigger(w1: f64, h1 : f64, w2 : f64, h2 : f64) -> Result<Rectangle> {
[INFO] [stdout]    |    ^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: method `accelerate` is never used
[INFO] [stdout]   --> examples/structures.rs:30:8
[INFO] [stdout]    |
[INFO] [stdout] 18 | impl Spaceship {
[INFO] [stdout]    | -------------- method in this implementation
[INFO] [stdout] ...
[INFO] [stdout] 30 |     fn accelerate(&mut self, acc : i32) {
[INFO] [stdout]    |        ^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(dead_code)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait `FlyingObject` is never used
[INFO] [stdout]   --> examples/structures.rs:77:7
[INFO] [stdout]    |
[INFO] [stdout] 77 | trait FlyingObject {
[INFO] [stdout]    |       ^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: method `shoot` is never used
[INFO] [stdout]    --> examples/structures.rs:103:8
[INFO] [stdout]     |
[INFO] [stdout]  98 | impl Asteroid {
[INFO] [stdout]     | ------------- method in this implementation
[INFO] [stdout] ...
[INFO] [stdout] 103 |     fn shoot(&self) -> Missile {
[INFO] [stdout]     |        ^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
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