[INFO] updating cached repository shuntaka9576/ruststudy
[INFO] running `"git" "fetch" "--all"`
[INFO] [stdout] Fetching origin
[INFO] [stderr] From git://github.com/shuntaka9576/ruststudy
[INFO] [stderr]  * branch            HEAD       -> FETCH_HEAD
[INFO] running `"git" "clone" "work/cache/sources/gh/shuntaka9576/ruststudy" "work/ex/clippy-test-run/sources/stable/gh/shuntaka9576/ruststudy"`
[INFO] [stderr] Cloning into 'work/ex/clippy-test-run/sources/stable/gh/shuntaka9576/ruststudy'...
[INFO] [stderr] done.
[INFO] running `"git" "clone" "work/cache/sources/gh/shuntaka9576/ruststudy" "work/ex/clippy-test-run/sources/stable+rustflags=-Dclippy%3A%3Ainto_iter_on_array/gh/shuntaka9576/ruststudy"`
[INFO] [stderr] Cloning into 'work/ex/clippy-test-run/sources/stable+rustflags=-Dclippy%3A%3Ainto_iter_on_array/gh/shuntaka9576/ruststudy'...
[INFO] [stderr] done.
[INFO] running `"git" "rev-parse" "HEAD"`
[INFO] [stdout] 2fd64b3cb2c5db25840ddc7abf12731a4bee4b11
[INFO] sha for GitHub repo shuntaka9576/ruststudy: 2fd64b3cb2c5db25840ddc7abf12731a4bee4b11
[INFO] validating manifest of shuntaka9576/ruststudy on toolchain stable
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+stable" "read-manifest" "--manifest-path" "Cargo.toml"`
[INFO] validating manifest of shuntaka9576/ruststudy on toolchain stable+rustflags=-Dclippy::into_iter_on_array
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+stable" "read-manifest" "--manifest-path" "Cargo.toml"`
[INFO] started frobbing shuntaka9576/ruststudy
[INFO] finished frobbing shuntaka9576/ruststudy
[INFO] frobbed toml for shuntaka9576/ruststudy written to work/ex/clippy-test-run/sources/stable/gh/shuntaka9576/ruststudy/Cargo.toml
[INFO] started frobbing shuntaka9576/ruststudy
[INFO] finished frobbing shuntaka9576/ruststudy
[INFO] frobbed toml for shuntaka9576/ruststudy written to work/ex/clippy-test-run/sources/stable+rustflags=-Dclippy%3A%3Ainto_iter_on_array/gh/shuntaka9576/ruststudy/Cargo.toml
[INFO] crate shuntaka9576/ruststudy has a lockfile. skipping
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+stable" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+stable" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] linting shuntaka9576/ruststudy against stable for clippy-test-run
[INFO] running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/clippy-test-run/worker-5/stable:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/clippy-test-run/sources/stable/gh/shuntaka9576/ruststudy:/opt/crater/workdir:ro,Z" "-v" "/mnt/big/crater/work/local/cargo-home:/opt/crater/cargo-home:ro,Z" "-v" "/mnt/big/crater/work/local/rustup-home:/opt/crater/rustup-home:ro,Z" "-e" "USER_ID=1000" "-e" "SOURCE_DIR=/opt/crater/workdir" "-e" "MAP_USER_ID=1000" "-e" "CARGO_TARGET_DIR=/opt/crater/target" "-e" "CARGO_INCREMENTAL=0" "-e" "RUST_BACKTRACE=full" "-e" "RUSTFLAGS=--cap-lints=forbid" "-e" "CARGO_HOME=/opt/crater/cargo-home" "-e" "RUSTUP_HOME=/opt/crater/rustup-home" "-w" "/opt/crater/workdir" "-m" "1536M" "--network" "none" "rustops/crates-build-env" "/opt/crater/cargo-home/bin/cargo" "+stable" "clippy" "--frozen" "--all" "--all-targets"`
[INFO] [stdout] 970d677f66b0699e317d28b4e217bba798a8d15ee5fba0da2b1586b85bb6a697
[INFO] running `"docker" "start" "-a" "970d677f66b0699e317d28b4e217bba798a8d15ee5fba0da2b1586b85bb6a697"`
[INFO] [stderr]     Checking ruststudy v0.1.0 (/opt/crater/workdir)
[INFO] [stderr] warning: 5th binding whose name is just one char
[INFO] [stderr]    --> src/main.rs:536:16
[INFO] [stderr]     |
[INFO] [stderr] 536 |     let (x, _, z) = coordinate();
[INFO] [stderr]     |                ^
[INFO] [stderr]     |
[INFO] [stderr]     = note: #[warn(clippy::many_single_char_names)] on by default
[INFO] [stderr]     = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#many_single_char_names
[INFO] [stderr] 
[INFO] [stderr] warning: 6th binding whose name is just one char
[INFO] [stderr]    --> src/main.rs:561:13
[INFO] [stderr]     |
[INFO] [stderr] 561 |         ref r => println!("Got a reference to {}", r),
[INFO] [stderr]     |             ^
[INFO] [stderr]     |
[INFO] [stderr]     = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#many_single_char_names
[INFO] [stderr] 
[INFO] [stderr] warning: 6th binding whose name is just one char
[INFO] [stderr]    --> src/main.rs:585:9
[INFO] [stderr]     |
[INFO] [stderr] 585 |         e @ 1...5 => println!("got a range element {}", e),
[INFO] [stderr]     |         ^
[INFO] [stderr]     |
[INFO] [stderr]     = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#many_single_char_names
[INFO] [stderr] 
[INFO] [stderr] warning: 6th binding whose name is just one char
[INFO] [stderr]    --> src/main.rs:597:23
[INFO] [stderr]     |
[INFO] [stderr] 597 |             name: ref a @ Some(_),
[INFO] [stderr]     |                       ^
[INFO] [stderr]     |
[INFO] [stderr]     = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#many_single_char_names
[INFO] [stderr] 
[INFO] [stderr] warning: 6th binding whose name is just one char
[INFO] [stderr]    --> src/main.rs:605:9
[INFO] [stderr]     |
[INFO] [stderr] 605 |         e @ 1...5 | e @ 8...10 => println!("got a range element {}", e),
[INFO] [stderr]     |         ^
[INFO] [stderr]     |
[INFO] [stderr]     = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#many_single_char_names
[INFO] [stderr] 
[INFO] [stderr] warning: 6th binding whose name is just one char
[INFO] [stderr]    --> src/main.rs:619:28
[INFO] [stderr]     |
[INFO] [stderr] 619 |         OptionalInt::Value(i) if i > 5 => println!("Got an int bigger than five!"),
[INFO] [stderr]     |                            ^
[INFO] [stderr]     |
[INFO] [stderr]     = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#many_single_char_names
[INFO] [stderr] 
[INFO] [stderr] warning: redundant field names in struct initialization
[INFO] [stderr]    --> src/main.rs:643:17
[INFO] [stderr]     |
[INFO] [stderr] 643 |                 x: x,
[INFO] [stderr]     |                 ^^^^ help: replace it with: `x`
[INFO] [stderr]     |
[INFO] [stderr]     = note: #[warn(clippy::redundant_field_names)] on by default
[INFO] [stderr]     = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#redundant_field_names
[INFO] [stderr] 
[INFO] [stderr] warning: redundant field names in struct initialization
[INFO] [stderr]    --> src/main.rs:644:17
[INFO] [stderr]     |
[INFO] [stderr] 644 |                 y: y,
[INFO] [stderr]     |                 ^^^^ help: replace it with: `y`
[INFO] [stderr]     |
[INFO] [stderr]     = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#redundant_field_names
[INFO] [stderr] 
[INFO] [stderr] warning: redundant field names in struct initialization
[INFO] [stderr]    --> src/main.rs:645:17
[INFO] [stderr]     |
[INFO] [stderr] 645 |                 radius: radius,
[INFO] [stderr]     |                 ^^^^^^^^^^^^^^ help: replace it with: `radius`
[INFO] [stderr]     |
[INFO] [stderr]     = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#redundant_field_names
[INFO] [stderr] 
[INFO] [stderr] warning: using `println!("")`
[INFO] [stderr]    --> src/main.rs:767:5
[INFO] [stderr]     |
[INFO] [stderr] 767 |     println!("");
[INFO] [stderr]     |     ^^^^^^^^^^^^ help: replace it with: `println!()`
[INFO] [stderr]     |
[INFO] [stderr]     = note: #[warn(clippy::println_empty_string)] on by default
[INFO] [stderr]     = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#println_empty_string
[INFO] [stderr] 
[INFO] [stderr] warning: 5th binding whose name is just one char
[INFO] [stderr]    --> src/main.rs:994:18
[INFO] [stderr]     |
[INFO] [stderr] 994 |             Some(x) => println!("{}", x),
[INFO] [stderr]     |                  ^
[INFO] [stderr]     |
[INFO] [stderr]     = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#many_single_char_names
[INFO] [stderr] 
[INFO] [stderr] warning: 5th binding whose name is just one char
[INFO] [stderr]    --> src/main.rs:536:16
[INFO] [stderr]     |
[INFO] [stderr] 536 |     let (x, _, z) = coordinate();
[INFO] [stderr]     |                ^
[INFO] [stderr]     |
[INFO] [stderr]     = note: #[warn(clippy::many_single_char_names)] on by default
[INFO] [stderr]     = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#many_single_char_names
[INFO] [stderr] 
[INFO] [stderr] warning: 6th binding whose name is just one char
[INFO] [stderr]    --> src/main.rs:561:13
[INFO] [stderr]     |
[INFO] [stderr] 561 |         ref r => println!("Got a reference to {}", r),
[INFO] [stderr]     |             ^
[INFO] [stderr]     |
[INFO] [stderr]     = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#many_single_char_names
[INFO] [stderr] 
[INFO] [stderr] warning: 6th binding whose name is just one char
[INFO] [stderr]    --> src/main.rs:585:9
[INFO] [stderr]     |
[INFO] [stderr] 585 |         e @ 1...5 => println!("got a range element {}", e),
[INFO] [stderr]     |         ^
[INFO] [stderr]     |
[INFO] [stderr]     = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#many_single_char_names
[INFO] [stderr] 
[INFO] [stderr] warning: 6th binding whose name is just one char
[INFO] [stderr]    --> src/main.rs:597:23
[INFO] [stderr]     |
[INFO] [stderr] 597 |             name: ref a @ Some(_),
[INFO] [stderr]     |                       ^
[INFO] [stderr]     |
[INFO] [stderr]     = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#many_single_char_names
[INFO] [stderr] 
[INFO] [stderr] warning: 6th binding whose name is just one char
[INFO] [stderr]    --> src/main.rs:605:9
[INFO] [stderr]     |
[INFO] [stderr] 605 |         e @ 1...5 | e @ 8...10 => println!("got a range element {}", e),
[INFO] [stderr]     |         ^
[INFO] [stderr]     |
[INFO] [stderr]     = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#many_single_char_names
[INFO] [stderr] 
[INFO] [stderr] warning: 6th binding whose name is just one char
[INFO] [stderr]    --> src/main.rs:619:28
[INFO] [stderr]     |
[INFO] [stderr] 619 |         OptionalInt::Value(i) if i > 5 => println!("Got an int bigger than five!"),
[INFO] [stderr]     |                            ^
[INFO] [stderr]     |
[INFO] [stderr]     = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#many_single_char_names
[INFO] [stderr] 
[INFO] [stderr] warning: redundant field names in struct initialization
[INFO] [stderr]    --> src/main.rs:643:17
[INFO] [stderr]     |
[INFO] [stderr] 643 |                 x: x,
[INFO] [stderr]     |                 ^^^^ help: replace it with: `x`
[INFO] [stderr]     |
[INFO] [stderr]     = note: #[warn(clippy::redundant_field_names)] on by default
[INFO] [stderr]     = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#redundant_field_names
[INFO] [stderr] 
[INFO] [stderr] warning: redundant field names in struct initialization
[INFO] [stderr]    --> src/main.rs:644:17
[INFO] [stderr]     |
[INFO] [stderr] 644 |                 y: y,
[INFO] [stderr]     |                 ^^^^ help: replace it with: `y`
[INFO] [stderr]     |
[INFO] [stderr]     = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#redundant_field_names
[INFO] [stderr] 
[INFO] [stderr] warning: redundant field names in struct initialization
[INFO] [stderr]    --> src/main.rs:645:17
[INFO] [stderr]     |
[INFO] [stderr] 645 |                 radius: radius,
[INFO] [stderr]     |                 ^^^^^^^^^^^^^^ help: replace it with: `radius`
[INFO] [stderr]     |
[INFO] [stderr]     = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#redundant_field_names
[INFO] [stderr] 
[INFO] [stderr] warning: using `println!("")`
[INFO] [stderr]    --> src/main.rs:767:5
[INFO] [stderr]     |
[INFO] [stderr] 767 |     println!("");
[INFO] [stderr]     |     ^^^^^^^^^^^^ help: replace it with: `println!()`
[INFO] [stderr]     |
[INFO] [stderr]     = note: #[warn(clippy::println_empty_string)] on by default
[INFO] [stderr]     = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#println_empty_string
[INFO] [stderr] 
[INFO] [stderr] warning: 5th binding whose name is just one char
[INFO] [stderr]    --> src/main.rs:994:18
[INFO] [stderr]     |
[INFO] [stderr] 994 |             Some(x) => println!("{}", x),
[INFO] [stderr]     |                  ^
[INFO] [stderr]     |
[INFO] [stderr]     = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#many_single_char_names
[INFO] [stderr] 
[INFO] [stderr] warning: unused import: `std::env`
[INFO] [stderr]   --> src/effective/mod.rs:11:9
[INFO] [stderr]    |
[INFO] [stderr] 11 |     use std::env;
[INFO] [stderr]    |         ^^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: #[warn(unused_imports)] on by default
[INFO] [stderr] 
[INFO] [stderr] warning: unused import: `std::env`
[INFO] [stderr]   --> src/effective/mod.rs:11:9
[INFO] [stderr]    |
[INFO] [stderr] 11 |     use std::env;
[INFO] [stderr]    |         ^^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: #[warn(unused_imports)] on by default
[INFO] [stderr] 
[INFO] [stderr] warning: unreachable pattern
[INFO] [stderr]    --> src/main.rs:555:9
[INFO] [stderr]     |
[INFO] [stderr] 555 |         _ => println!("anything"),
[INFO] [stderr]     |         ^
[INFO] [stderr]     |
[INFO] [stderr]     = note: #[warn(unreachable_patterns)] on by default
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `v9`
[INFO] [stderr]    --> src/main.rs:339:13
[INFO] [stderr]     |
[INFO] [stderr] 339 |     let mut v9 = &mut v8;
[INFO] [stderr]     |             ^^ help: consider using `_v9` instead
[INFO] [stderr]     |
[INFO] [stderr]     = note: #[warn(unused_variables)] on by default
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `v1`
[INFO] [stderr]    --> src/main.rs:295:17
[INFO] [stderr]     |
[INFO] [stderr] 295 |     fn change_v(v1: &Vec<i32>, v2: &Vec<i32>) -> i32 {
[INFO] [stderr]     |                 ^^ help: consider using `_v1` instead
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `v2`
[INFO] [stderr]    --> src/main.rs:295:32
[INFO] [stderr]     |
[INFO] [stderr] 295 |     fn change_v(v1: &Vec<i32>, v2: &Vec<i32>) -> i32 {
[INFO] [stderr]     |                                ^^ help: consider using `_v2` instead
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `black`
[INFO] [stderr]    --> src/main.rs:430:9
[INFO] [stderr]     |
[INFO] [stderr] 430 |     let black = Color(0, 0, 0);
[INFO] [stderr]     |         ^^^^^ help: consider using `_black` instead
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `origin`
[INFO] [stderr]    --> src/main.rs:431:9
[INFO] [stderr]     |
[INFO] [stderr] 431 |     let origin = Point(0, 0, 0);
[INFO] [stderr]     |         ^^^^^^ help: consider using `_origin` instead
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `x`
[INFO] [stderr]    --> src/main.rs:434:9
[INFO] [stderr]     |
[INFO] [stderr] 434 |     let x = Electron;
[INFO] [stderr]     |         ^ help: consider using `_x` instead
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `x`
[INFO] [stderr]    --> src/main.rs:446:9
[INFO] [stderr]     |
[INFO] [stderr] 446 |     let x: Message = Message::Move { x: 3, y: 4 };
[INFO] [stderr]     |         ^ help: consider using `_x` instead
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `y`
[INFO] [stderr]    --> src/main.rs:453:9
[INFO] [stderr]     |
[INFO] [stderr] 453 |     let y: BoardGameTurn = BoardGameTurn::Move { squares: 1 };
[INFO] [stderr]     |         ^ help: consider using `_y` instead
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `m`
[INFO] [stderr]    --> src/main.rs:454:9
[INFO] [stderr]     |
[INFO] [stderr] 454 |     let m = Message::Write("Hello, world".to_string());
[INFO] [stderr]     |         ^ help: consider using `_m` instead
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `r`
[INFO] [stderr]    --> src/main.rs:489:21
[INFO] [stderr]     |
[INFO] [stderr] 489 |     fn change_color(r: i32, g: i32, b: i32) {}
[INFO] [stderr]     |                     ^ help: consider using `_r` instead
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `g`
[INFO] [stderr]    --> src/main.rs:489:29
[INFO] [stderr]     |
[INFO] [stderr] 489 |     fn change_color(r: i32, g: i32, b: i32) {}
[INFO] [stderr]     |                             ^ help: consider using `_g` instead
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `b`
[INFO] [stderr]    --> src/main.rs:489:37
[INFO] [stderr]     |
[INFO] [stderr] 489 |     fn change_color(r: i32, g: i32, b: i32) {}
[INFO] [stderr]     |                                     ^ help: consider using `_b` instead
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `x`
[INFO] [stderr]    --> src/main.rs:490:20
[INFO] [stderr]     |
[INFO] [stderr] 490 |     fn move_cursor(x: i32, y: i32) {}
[INFO] [stderr]     |                    ^ help: consider using `_x` instead
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `y`
[INFO] [stderr]    --> src/main.rs:490:28
[INFO] [stderr]     |
[INFO] [stderr] 490 |     fn move_cursor(x: i32, y: i32) {}
[INFO] [stderr]     |                            ^ help: consider using `_y` instead
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `c2`
[INFO] [stderr]    --> src/main.rs:672:9
[INFO] [stderr]     |
[INFO] [stderr] 672 |     let c2 = Circle::new(0.0, 0.0, 2.0);
[INFO] [stderr]     |         ^^ help: consider using `_c2` instead
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `j`
[INFO] [stderr]    --> src/main.rs:734:9
[INFO] [stderr]     |
[INFO] [stderr] 734 |     let j: i32 = 0;
[INFO] [stderr]     |         ^ help: consider using `_j` instead
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `s`
[INFO] [stderr]    --> src/main.rs:752:9
[INFO] [stderr]     |
[INFO] [stderr] 752 |     let s = "foo\nbar";
[INFO] [stderr]     |         ^ help: consider using `_s` instead
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `dog`
[INFO] [stderr]    --> src/main.rs:771:9
[INFO] [stderr]     |
[INFO] [stderr] 771 |     let dog = hachiko.chars().nth(1);
[INFO] [stderr]     |         ^^^ help: consider using `_dog` instead
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `int_origin`
[INFO] [stderr]    --> src/main.rs:813:9
[INFO] [stderr]     |
[INFO] [stderr] 813 |     let int_origin = Point { x: 0, y: 0 };
[INFO] [stderr]     |         ^^^^^^^^^^ help: consider using `_int_origin` instead
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `float_origin`
[INFO] [stderr]    --> src/main.rs:814:9
[INFO] [stderr]     |
[INFO] [stderr] 814 |     let float_origin = Point { x: 0.0, y: 0.0 };
[INFO] [stderr]     |         ^^^^^^^^^^^^ help: consider using `_float_origin` instead
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `firecracker`
[INFO] [stderr]    --> src/main.rs:926:9
[INFO] [stderr]     |
[INFO] [stderr] 926 |     let firecracker = Firework { strength: 1 };
[INFO] [stderr]     |         ^^^^^^^^^^^ help: consider using `_firecracker` instead
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `tnt`
[INFO] [stderr]    --> src/main.rs:927:9
[INFO] [stderr]     |
[INFO] [stderr] 927 |     let tnt = Firework { strength: 100 };
[INFO] [stderr]     |         ^^^ help: consider using `_tnt` instead
[INFO] [stderr] 
[INFO] [stderr] warning: variable does not need to be mutable
[INFO] [stderr]    --> src/main.rs:339:9
[INFO] [stderr]     |
[INFO] [stderr] 339 |     let mut v9 = &mut v8;
[INFO] [stderr]     |         ----^^
[INFO] [stderr]     |         |
[INFO] [stderr]     |         help: remove this `mut`
[INFO] [stderr]     |
[INFO] [stderr]     = note: #[warn(unused_mut)] on by default
[INFO] [stderr] 
[INFO] [stderr] warning: variable does not need to be mutable
[INFO] [stderr]    --> src/main.rs:354:9
[INFO] [stderr]     |
[INFO] [stderr] 354 |     let mut v = vec![1, 2, 3];
[INFO] [stderr]     |         ----^
[INFO] [stderr]     |         |
[INFO] [stderr]     |         help: remove this `mut`
[INFO] [stderr] 
[INFO] [stderr] warning: variable does not need to be mutable
[INFO] [stderr]    --> src/main.rs:594:9
[INFO] [stderr]     |
[INFO] [stderr] 594 |     let mut x6: Option<Person2> = Some(Person2 { name: Some(name) });
[INFO] [stderr]     |         ----^^
[INFO] [stderr]     |         |
[INFO] [stderr]     |         help: remove this `mut`
[INFO] [stderr] 
[INFO] [stderr] warning: method is never used: `x`
[INFO] [stderr]    --> src/main.rs:379:9
[INFO] [stderr]     |
[INFO] [stderr] 379 |         fn x(&self) -> &'a i32 {
[INFO] [stderr]     |         ^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]     |
[INFO] [stderr]     = note: #[warn(dead_code)] on by default
[INFO] [stderr] 
[INFO] [stderr] warning: variant is never constructed: `Quite`
[INFO] [stderr]    --> src/main.rs:440:9
[INFO] [stderr]     |
[INFO] [stderr] 440 |         Quite,
[INFO] [stderr]     |         ^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: variant is never constructed: `ChangeColor`
[INFO] [stderr]    --> src/main.rs:441:9
[INFO] [stderr]     |
[INFO] [stderr] 441 |         ChangeColor(i32, i32, i32),
[INFO] [stderr]     |         ^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: field is never used: `x`
[INFO] [stderr]    --> src/main.rs:442:16
[INFO] [stderr]     |
[INFO] [stderr] 442 |         Move { x: i32, y: i32 },
[INFO] [stderr]     |                ^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: field is never used: `y`
[INFO] [stderr]    --> src/main.rs:442:24
[INFO] [stderr]     |
[INFO] [stderr] 442 |         Move { x: i32, y: i32 },
[INFO] [stderr]     |                        ^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: field is never used: `squares`
[INFO] [stderr]    --> src/main.rs:449:16
[INFO] [stderr]     |
[INFO] [stderr] 449 |         Move { squares: i32 },
[INFO] [stderr]     |                ^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: variant is never constructed: `Pass`
[INFO] [stderr]    --> src/main.rs:450:9
[INFO] [stderr]     |
[INFO] [stderr] 450 |         Pass,
[INFO] [stderr]     |         ^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: enum is never used: `Message`
[INFO] [stderr]    --> src/main.rs:482:5
[INFO] [stderr]     |
[INFO] [stderr] 482 |     enum Message {
[INFO] [stderr]     |     ^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: function is never used: `quite`
[INFO] [stderr]    --> src/main.rs:488:5
[INFO] [stderr]     |
[INFO] [stderr] 488 |     fn quite() {}
[INFO] [stderr]     |     ^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: function is never used: `change_color`
[INFO] [stderr]    --> src/main.rs:489:5
[INFO] [stderr]     |
[INFO] [stderr] 489 |     fn change_color(r: i32, g: i32, b: i32) {}
[INFO] [stderr]     |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: function is never used: `move_cursor`
[INFO] [stderr]    --> src/main.rs:490:5
[INFO] [stderr]     |
[INFO] [stderr] 490 |     fn move_cursor(x: i32, y: i32) {}
[INFO] [stderr]     |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: function is never used: `process_message`
[INFO] [stderr]    --> src/main.rs:492:5
[INFO] [stderr]     |
[INFO] [stderr] 492 |     fn process_message(msg: Message) {
[INFO] [stderr]     |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: variant is never constructed: `Missing`
[INFO] [stderr]    --> src/main.rs:541:9
[INFO] [stderr]     |
[INFO] [stderr] 541 |         Missing,
[INFO] [stderr]     |         ^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: variant is never constructed: `Missing`
[INFO] [stderr]    --> src/main.rs:612:9
[INFO] [stderr]     |
[INFO] [stderr] 612 |         Missing,
[INFO] [stderr]     |         ^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: enum is never used: `Option`
[INFO] [stderr]    --> src/main.rs:788:5
[INFO] [stderr]     |
[INFO] [stderr] 788 |     enum Option<T> {
[INFO] [stderr]     |     ^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: enum is never used: `Result`
[INFO] [stderr]    --> src/main.rs:796:5
[INFO] [stderr]     |
[INFO] [stderr] 796 |     enum Result<T, E> {
[INFO] [stderr]     |     ^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: field is never used: `y`
[INFO] [stderr]    --> src/main.rs:810:9
[INFO] [stderr]     |
[INFO] [stderr] 810 |         y: T,
[INFO] [stderr]     |         ^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: method is never used: `swap`
[INFO] [stderr]    --> src/main.rs:817:9
[INFO] [stderr]     |
[INFO] [stderr] 817 |         fn swap(&mut self) {
[INFO] [stderr]     |         ^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: function is never used: `greeting`
[INFO] [stderr]    --> src/main.rs:872:5
[INFO] [stderr]     |
[INFO] [stderr] 872 |     fn greeting<T: SayHello>(x: T) {
[INFO] [stderr]     |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: function is never used: `greeting2`
[INFO] [stderr]    --> src/main.rs:878:5
[INFO] [stderr]     |
[INFO] [stderr] 878 |     fn greeting2<T: SayHello + SayGoodbye>(x: T) {
[INFO] [stderr]     |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: function is never used: `greeting3`
[INFO] [stderr]    --> src/main.rs:883:5
[INFO] [stderr]     |
[INFO] [stderr] 883 | /     fn greeting3<T>(x: T)
[INFO] [stderr] 884 | |     where
[INFO] [stderr] 885 | |         T: SayHello + SayGoodbye,
[INFO] [stderr] 886 | |     {
[INFO] [stderr] 887 | |         x.say_hello();
[INFO] [stderr] 888 | |         x.say_goodbye();
[INFO] [stderr] 889 | |     }
[INFO] [stderr]     | |_____^
[INFO] [stderr] 
[INFO] [stderr] warning: field is never used: `age`
[INFO] [stderr]     --> src/main.rs:1087:9
[INFO] [stderr]      |
[INFO] [stderr] 1087 |         age: i32,
[INFO] [stderr]      |         ^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: unreachable pattern
[INFO] [stderr]    --> src/main.rs:555:9
[INFO] [stderr]     |
[INFO] [stderr] 555 |         _ => println!("anything"),
[INFO] [stderr]     |         ^
[INFO] [stderr]     |
[INFO] [stderr]     = note: #[warn(unreachable_patterns)] on by default
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `v9`
[INFO] [stderr]    --> src/main.rs:339:13
[INFO] [stderr]     |
[INFO] [stderr] 339 |     let mut v9 = &mut v8;
[INFO] [stderr]     |             ^^ help: consider using `_v9` instead
[INFO] [stderr]     |
[INFO] [stderr]     = note: #[warn(unused_variables)] on by default
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `v1`
[INFO] [stderr]    --> src/main.rs:295:17
[INFO] [stderr]     |
[INFO] [stderr] 295 |     fn change_v(v1: &Vec<i32>, v2: &Vec<i32>) -> i32 {
[INFO] [stderr]     |                 ^^ help: consider using `_v1` instead
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `v2`
[INFO] [stderr]    --> src/main.rs:295:32
[INFO] [stderr]     |
[INFO] [stderr] 295 |     fn change_v(v1: &Vec<i32>, v2: &Vec<i32>) -> i32 {
[INFO] [stderr]     |                                ^^ help: consider using `_v2` instead
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `black`
[INFO] [stderr]    --> src/main.rs:430:9
[INFO] [stderr]     |
[INFO] [stderr] 430 |     let black = Color(0, 0, 0);
[INFO] [stderr]     |         ^^^^^ help: consider using `_black` instead
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `origin`
[INFO] [stderr]    --> src/main.rs:431:9
[INFO] [stderr]     |
[INFO] [stderr] 431 |     let origin = Point(0, 0, 0);
[INFO] [stderr]     |         ^^^^^^ help: consider using `_origin` instead
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `x`
[INFO] [stderr]    --> src/main.rs:434:9
[INFO] [stderr]     |
[INFO] [stderr] 434 |     let x = Electron;
[INFO] [stderr]     |         ^ help: consider using `_x` instead
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `x`
[INFO] [stderr]    --> src/main.rs:446:9
[INFO] [stderr]     |
[INFO] [stderr] 446 |     let x: Message = Message::Move { x: 3, y: 4 };
[INFO] [stderr]     |         ^ help: consider using `_x` instead
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `y`
[INFO] [stderr]    --> src/main.rs:453:9
[INFO] [stderr]     |
[INFO] [stderr] 453 |     let y: BoardGameTurn = BoardGameTurn::Move { squares: 1 };
[INFO] [stderr]     |         ^ help: consider using `_y` instead
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `m`
[INFO] [stderr]    --> src/main.rs:454:9
[INFO] [stderr]     |
[INFO] [stderr] 454 |     let m = Message::Write("Hello, world".to_string());
[INFO] [stderr]     |         ^ help: consider using `_m` instead
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `r`
[INFO] [stderr]    --> src/main.rs:489:21
[INFO] [stderr]     |
[INFO] [stderr] 489 |     fn change_color(r: i32, g: i32, b: i32) {}
[INFO] [stderr]     |                     ^ help: consider using `_r` instead
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `g`
[INFO] [stderr]    --> src/main.rs:489:29
[INFO] [stderr]     |
[INFO] [stderr] 489 |     fn change_color(r: i32, g: i32, b: i32) {}
[INFO] [stderr]     |                             ^ help: consider using `_g` instead
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `b`
[INFO] [stderr]    --> src/main.rs:489:37
[INFO] [stderr]     |
[INFO] [stderr] 489 |     fn change_color(r: i32, g: i32, b: i32) {}
[INFO] [stderr]     |                                     ^ help: consider using `_b` instead
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `x`
[INFO] [stderr]    --> src/main.rs:490:20
[INFO] [stderr]     |
[INFO] [stderr] 490 |     fn move_cursor(x: i32, y: i32) {}
[INFO] [stderr]     |                    ^ help: consider using `_x` instead
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `y`
[INFO] [stderr]    --> src/main.rs:490:28
[INFO] [stderr]     |
[INFO] [stderr] 490 |     fn move_cursor(x: i32, y: i32) {}
[INFO] [stderr]     |                            ^ help: consider using `_y` instead
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `c2`
[INFO] [stderr]    --> src/main.rs:672:9
[INFO] [stderr]     |
[INFO] [stderr] 672 |     let c2 = Circle::new(0.0, 0.0, 2.0);
[INFO] [stderr]     |         ^^ help: consider using `_c2` instead
[INFO] [stderr] 
[INFO] [stderr] warning: manual implementation of an assign operation
[INFO] [stderr]    --> src/main.rs:129:5
[INFO] [stderr]     |
[INFO] [stderr] 129 |     x = x * 24;
[INFO] [stderr]     |     ^^^^^^^^^^ help: replace it with: `x *= 24`
[INFO] [stderr]     |
[INFO] [stderr]     = note: #[warn(clippy::assign_op_pattern)] on by default
[INFO] [stderr]     = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#assign_op_pattern
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `j`
[INFO] [stderr]    --> src/main.rs:734:9
[INFO] [stderr]     |
[INFO] [stderr] 734 |     let j: i32 = 0;
[INFO] [stderr]     |         ^ help: consider using `_j` instead
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `s`
[INFO] [stderr]    --> src/main.rs:752:9
[INFO] [stderr]     |
[INFO] [stderr] 752 |     let s = "foo\nbar";
[INFO] [stderr]     |         ^ help: consider using `_s` instead
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `dog`
[INFO] [stderr]    --> src/main.rs:771:9
[INFO] [stderr]     |
[INFO] [stderr] 771 |     let dog = hachiko.chars().nth(1);
[INFO] [stderr]     |         ^^^ help: consider using `_dog` instead
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `int_origin`
[INFO] [stderr]    --> src/main.rs:813:9
[INFO] [stderr]     |
[INFO] [stderr] 813 |     let int_origin = Point { x: 0, y: 0 };
[INFO] [stderr]     |         ^^^^^^^^^^ help: consider using `_int_origin` instead
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `float_origin`
[INFO] [stderr]    --> src/main.rs:814:9
[INFO] [stderr]     |
[INFO] [stderr] 814 |     let float_origin = Point { x: 0.0, y: 0.0 };
[INFO] [stderr]     |         ^^^^^^^^^^^^ help: consider using `_float_origin` instead
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `firecracker`
[INFO] [stderr]    --> src/main.rs:926:9
[INFO] [stderr]     |
[INFO] [stderr] 926 |     let firecracker = Firework { strength: 1 };
[INFO] [stderr]     |         ^^^^^^^^^^^ help: consider using `_firecracker` instead
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `tnt`
[INFO] [stderr]    --> src/main.rs:927:9
[INFO] [stderr]     |
[INFO] [stderr] 927 |     let tnt = Firework { strength: 100 };
[INFO] [stderr]     |         ^^^ help: consider using `_tnt` instead
[INFO] [stderr] 
[INFO] [stderr] warning: writing `&Vec<_>` instead of `&[_]` involves one more reference and cannot be used with non-Vec-based slices.
[INFO] [stderr]    --> src/main.rs:295:21
[INFO] [stderr]     |
[INFO] [stderr] 295 |     fn change_v(v1: &Vec<i32>, v2: &Vec<i32>) -> i32 {
[INFO] [stderr]     |                     ^^^^^^^^^ help: change this to: `&[i32]`
[INFO] [stderr]     |
[INFO] [stderr]     = note: #[warn(clippy::ptr_arg)] on by default
[INFO] [stderr]     = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#ptr_arg
[INFO] [stderr] 
[INFO] [stderr] warning: writing `&Vec<_>` instead of `&[_]` involves one more reference and cannot be used with non-Vec-based slices.
[INFO] [stderr]    --> src/main.rs:295:36
[INFO] [stderr]     |
[INFO] [stderr] 295 |     fn change_v(v1: &Vec<i32>, v2: &Vec<i32>) -> i32 {
[INFO] [stderr]     |                                    ^^^^^^^^^ help: change this to: `&[i32]`
[INFO] [stderr]     |
[INFO] [stderr]     = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#ptr_arg
[INFO] [stderr] 
[INFO] [stderr] warning: the `x:` in this pattern is redundant
[INFO] [stderr]    --> src/main.rs:496:29
[INFO] [stderr]     |
[INFO] [stderr] 496 |             Message::Move { x: x, y: y } => move_cursor(x, y),
[INFO] [stderr]     |                             --^^
[INFO] [stderr]     |                             |
[INFO] [stderr]     |                             help: remove this
[INFO] [stderr]     |
[INFO] [stderr]     = note: #[warn(non_shorthand_field_patterns)] on by default
[INFO] [stderr] 
[INFO] [stderr] warning: the `y:` in this pattern is redundant
[INFO] [stderr]    --> src/main.rs:496:35
[INFO] [stderr]     |
[INFO] [stderr] 496 |             Message::Move { x: x, y: y } => move_cursor(x, y),
[INFO] [stderr]     |                                   --^^
[INFO] [stderr]     |                                   |
[INFO] [stderr]     |                                   help: remove this
[INFO] [stderr] 
[INFO] [stderr] warning: you seem to be trying to use match for destructuring a single pattern. Consider using `if let`
[INFO] [stderr]    --> src/main.rs:595:5
[INFO] [stderr]     |
[INFO] [stderr] 595 | /     match x6 {
[INFO] [stderr] 596 | |         Some(Person2 {
[INFO] [stderr] 597 | |             name: ref a @ Some(_),
[INFO] [stderr] 598 | |             ..
[INFO] [stderr] 599 | |         }) => println!("{:?}", a),
[INFO] [stderr] 600 | |         _ => {}
[INFO] [stderr] 601 | |     }
[INFO] [stderr]     | |_____^
[INFO] [stderr]     |
[INFO] [stderr]     = note: #[warn(clippy::single_match)] on by default
[INFO] [stderr]     = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#single_match
[INFO] [stderr] help: try this
[INFO] [stderr]     |
[INFO] [stderr] 595 |     if let Some(Person2 {
[INFO] [stderr] 596 |             name: ref a @ Some(_),
[INFO] [stderr] 597 |             ..
[INFO] [stderr] 598 |         }) = x6 { println!("{:?}", a) }
[INFO] [stderr]     |
[INFO] [stderr] 
[INFO] [stderr] warning: variable does not need to be mutable
[INFO] [stderr]    --> src/main.rs:339:9
[INFO] [stderr]     |
[INFO] [stderr] 339 |     let mut v9 = &mut v8;
[INFO] [stderr]     |         ----^^
[INFO] [stderr]     |         |
[INFO] [stderr]     |         help: remove this `mut`
[INFO] [stderr]     |
[INFO] [stderr]     = note: #[warn(unused_mut)] on by default
[INFO] [stderr] 
[INFO] [stderr] warning: statement can be reduced
[INFO] [stderr]    --> src/main.rs:736:5
[INFO] [stderr]     |
[INFO] [stderr] 736 |     v[i];
[INFO] [stderr]     |     ^^^^^ help: replace it with: `v;i;`
[INFO] [stderr]     |
[INFO] [stderr]     = note: #[warn(clippy::unnecessary_operation)] on by default
[INFO] [stderr]     = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#unnecessary_operation
[INFO] [stderr] 
[INFO] [stderr] warning: variable does not need to be mutable
[INFO] [stderr]    --> src/main.rs:354:9
[INFO] [stderr]     |
[INFO] [stderr] 354 |     let mut v = vec![1, 2, 3];
[INFO] [stderr]     |         ----^
[INFO] [stderr]     |         |
[INFO] [stderr]     |         help: remove this `mut`
[INFO] [stderr] 
[INFO] [stderr] warning: you seem to be trying to use match for destructuring a single pattern. Consider using `if let`
[INFO] [stderr]    --> src/main.rs:934:5
[INFO] [stderr]     |
[INFO] [stderr] 934 | /     match optional {
[INFO] [stderr] 935 | |         Some(i) => {
[INFO] [stderr] 936 | |             println!("This is a really long string and `{:?}`", i);
[INFO] [stderr] 937 | |         }
[INFO] [stderr] 938 | |         _ => {}
[INFO] [stderr] 939 | |     }
[INFO] [stderr]     | |_____^
[INFO] [stderr]     |
[INFO] [stderr]     = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#single_match
[INFO] [stderr] help: try this
[INFO] [stderr]     |
[INFO] [stderr] 934 |     if let Some(i) = optional {
[INFO] [stderr] 935 |     println!("This is a really long string and `{:?}`", i);
[INFO] [stderr] 936 | }
[INFO] [stderr]     |
[INFO] [stderr] 
[INFO] [stderr] warning: this loop could be written as a `while let` loop
[INFO] [stderr]    --> src/main.rs:992:5
[INFO] [stderr]     |
[INFO] [stderr] 992 | /     loop {
[INFO] [stderr] 993 | |         match v.pop() {
[INFO] [stderr] 994 | |             Some(x) => println!("{}", x),
[INFO] [stderr] 995 | |             None => break,
[INFO] [stderr] 996 | |         }
[INFO] [stderr] 997 | |     }
[INFO] [stderr]     | |_____^ help: try: `while let Some(x) = v.pop() { .. }`
[INFO] [stderr]     |
[INFO] [stderr]     = note: #[warn(clippy::while_let_loop)] on by default
[INFO] [stderr]     = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#while_let_loop
[INFO] [stderr] 
[INFO] [stderr] warning: variable does not need to be mutable
[INFO] [stderr]    --> src/main.rs:594:9
[INFO] [stderr]     |
[INFO] [stderr] 594 |     let mut x6: Option<Person2> = Some(Person2 { name: Some(name) });
[INFO] [stderr]     |         ----^^
[INFO] [stderr]     |         |
[INFO] [stderr]     |         help: remove this `mut`
[INFO] [stderr] 
[INFO] [stderr] warning: method is never used: `x`
[INFO] [stderr]    --> src/main.rs:379:9
[INFO] [stderr]     |
[INFO] [stderr] 379 |         fn x(&self) -> &'a i32 {
[INFO] [stderr]     |         ^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]     |
[INFO] [stderr]     = note: #[warn(dead_code)] on by default
[INFO] [stderr] 
[INFO] [stderr] warning: variant is never constructed: `Quite`
[INFO] [stderr]    --> src/main.rs:440:9
[INFO] [stderr]     |
[INFO] [stderr] 440 |         Quite,
[INFO] [stderr]     |         ^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: variant is never constructed: `ChangeColor`
[INFO] [stderr]    --> src/main.rs:441:9
[INFO] [stderr]     |
[INFO] [stderr] 441 |         ChangeColor(i32, i32, i32),
[INFO] [stderr]     |         ^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: field is never used: `x`
[INFO] [stderr]    --> src/main.rs:442:16
[INFO] [stderr]     |
[INFO] [stderr] 442 |         Move { x: i32, y: i32 },
[INFO] [stderr]     |                ^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: field is never used: `y`
[INFO] [stderr]    --> src/main.rs:442:24
[INFO] [stderr]     |
[INFO] [stderr] 442 |         Move { x: i32, y: i32 },
[INFO] [stderr]     |                        ^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: field is never used: `squares`
[INFO] [stderr]    --> src/main.rs:449:16
[INFO] [stderr]     |
[INFO] [stderr] 449 |         Move { squares: i32 },
[INFO] [stderr]     |                ^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: variant is never constructed: `Pass`
[INFO] [stderr]    --> src/main.rs:450:9
[INFO] [stderr]     |
[INFO] [stderr] 450 |         Pass,
[INFO] [stderr]     |         ^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: enum is never used: `Message`
[INFO] [stderr]    --> src/main.rs:482:5
[INFO] [stderr]     |
[INFO] [stderr] 482 |     enum Message {
[INFO] [stderr]     |     ^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: function is never used: `quite`
[INFO] [stderr]    --> src/main.rs:488:5
[INFO] [stderr]     |
[INFO] [stderr] 488 |     fn quite() {}
[INFO] [stderr]     |     ^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: function is never used: `change_color`
[INFO] [stderr]    --> src/main.rs:489:5
[INFO] [stderr]     |
[INFO] [stderr] 489 |     fn change_color(r: i32, g: i32, b: i32) {}
[INFO] [stderr]     |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: function is never used: `move_cursor`
[INFO] [stderr]    --> src/main.rs:490:5
[INFO] [stderr]     |
[INFO] [stderr] 490 |     fn move_cursor(x: i32, y: i32) {}
[INFO] [stderr]     |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: function is never used: `process_message`
[INFO] [stderr]    --> src/main.rs:492:5
[INFO] [stderr]     |
[INFO] [stderr] 492 |     fn process_message(msg: Message) {
[INFO] [stderr]     |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: variant is never constructed: `Missing`
[INFO] [stderr]    --> src/main.rs:541:9
[INFO] [stderr]     |
[INFO] [stderr] 541 |         Missing,
[INFO] [stderr]     |         ^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: variant is never constructed: `Missing`
[INFO] [stderr]    --> src/main.rs:612:9
[INFO] [stderr]     |
[INFO] [stderr] 612 |         Missing,
[INFO] [stderr]     |         ^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: enum is never used: `Option`
[INFO] [stderr]    --> src/main.rs:788:5
[INFO] [stderr]     |
[INFO] [stderr] 788 |     enum Option<T> {
[INFO] [stderr]     |     ^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: enum is never used: `Result`
[INFO] [stderr]    --> src/main.rs:796:5
[INFO] [stderr]     |
[INFO] [stderr] 796 |     enum Result<T, E> {
[INFO] [stderr]     |     ^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: field is never used: `y`
[INFO] [stderr]    --> src/main.rs:810:9
[INFO] [stderr]     |
[INFO] [stderr] 810 |         y: T,
[INFO] [stderr]     |         ^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: method is never used: `swap`
[INFO] [stderr]    --> src/main.rs:817:9
[INFO] [stderr]     |
[INFO] [stderr] 817 |         fn swap(&mut self) {
[INFO] [stderr]     |         ^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: function is never used: `greeting`
[INFO] [stderr]    --> src/main.rs:872:5
[INFO] [stderr]     |
[INFO] [stderr] 872 |     fn greeting<T: SayHello>(x: T) {
[INFO] [stderr]     |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: function is never used: `greeting2`
[INFO] [stderr]    --> src/main.rs:878:5
[INFO] [stderr]     |
[INFO] [stderr] 878 |     fn greeting2<T: SayHello + SayGoodbye>(x: T) {
[INFO] [stderr]     |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: function is never used: `greeting3`
[INFO] [stderr]    --> src/main.rs:883:5
[INFO] [stderr]     |
[INFO] [stderr] 883 | /     fn greeting3<T>(x: T)
[INFO] [stderr] 884 | |     where
[INFO] [stderr] 885 | |         T: SayHello + SayGoodbye,
[INFO] [stderr] 886 | |     {
[INFO] [stderr] 887 | |         x.say_hello();
[INFO] [stderr] 888 | |         x.say_goodbye();
[INFO] [stderr] 889 | |     }
[INFO] [stderr]     | |_____^
[INFO] [stderr] 
[INFO] [stderr] warning: field is never used: `age`
[INFO] [stderr]     --> src/main.rs:1087:9
[INFO] [stderr]      |
[INFO] [stderr] 1087 |         age: i32,
[INFO] [stderr]      |         ^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: manual implementation of an assign operation
[INFO] [stderr]    --> src/main.rs:129:5
[INFO] [stderr]     |
[INFO] [stderr] 129 |     x = x * 24;
[INFO] [stderr]     |     ^^^^^^^^^^ help: replace it with: `x *= 24`
[INFO] [stderr]     |
[INFO] [stderr]     = note: #[warn(clippy::assign_op_pattern)] on by default
[INFO] [stderr]     = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#assign_op_pattern
[INFO] [stderr] 
[INFO] [stderr] warning: writing `&Vec<_>` instead of `&[_]` involves one more reference and cannot be used with non-Vec-based slices.
[INFO] [stderr]    --> src/main.rs:295:21
[INFO] [stderr]     |
[INFO] [stderr] 295 |     fn change_v(v1: &Vec<i32>, v2: &Vec<i32>) -> i32 {
[INFO] [stderr]     |                     ^^^^^^^^^ help: change this to: `&[i32]`
[INFO] [stderr]     |
[INFO] [stderr]     = note: #[warn(clippy::ptr_arg)] on by default
[INFO] [stderr]     = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#ptr_arg
[INFO] [stderr] 
[INFO] [stderr] warning: writing `&Vec<_>` instead of `&[_]` involves one more reference and cannot be used with non-Vec-based slices.
[INFO] [stderr]    --> src/main.rs:295:36
[INFO] [stderr]     |
[INFO] [stderr] 295 |     fn change_v(v1: &Vec<i32>, v2: &Vec<i32>) -> i32 {
[INFO] [stderr]     |                                    ^^^^^^^^^ help: change this to: `&[i32]`
[INFO] [stderr]     |
[INFO] [stderr]     = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#ptr_arg
[INFO] [stderr] 
[INFO] [stderr] warning: the `x:` in this pattern is redundant
[INFO] [stderr]    --> src/main.rs:496:29
[INFO] [stderr]     |
[INFO] [stderr] 496 |             Message::Move { x: x, y: y } => move_cursor(x, y),
[INFO] [stderr]     |                             --^^
[INFO] [stderr]     |                             |
[INFO] [stderr]     |                             help: remove this
[INFO] [stderr]     |
[INFO] [stderr]     = note: #[warn(non_shorthand_field_patterns)] on by default
[INFO] [stderr] 
[INFO] [stderr] warning: the `y:` in this pattern is redundant
[INFO] [stderr]    --> src/main.rs:496:35
[INFO] [stderr]     |
[INFO] [stderr] 496 |             Message::Move { x: x, y: y } => move_cursor(x, y),
[INFO] [stderr]     |                                   --^^
[INFO] [stderr]     |                                   |
[INFO] [stderr]     |                                   help: remove this
[INFO] [stderr] 
[INFO] [stderr] warning: you seem to be trying to use match for destructuring a single pattern. Consider using `if let`
[INFO] [stderr]    --> src/main.rs:595:5
[INFO] [stderr]     |
[INFO] [stderr] 595 | /     match x6 {
[INFO] [stderr] 596 | |         Some(Person2 {
[INFO] [stderr] 597 | |             name: ref a @ Some(_),
[INFO] [stderr] 598 | |             ..
[INFO] [stderr] 599 | |         }) => println!("{:?}", a),
[INFO] [stderr] 600 | |         _ => {}
[INFO] [stderr] 601 | |     }
[INFO] [stderr]     | |_____^
[INFO] [stderr]     |
[INFO] [stderr]     = note: #[warn(clippy::single_match)] on by default
[INFO] [stderr]     = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#single_match
[INFO] [stderr] help: try this
[INFO] [stderr]     |
[INFO] [stderr] 595 |     if let Some(Person2 {
[INFO] [stderr] 596 |             name: ref a @ Some(_),
[INFO] [stderr] 597 |             ..
[INFO] [stderr] 598 |         }) = x6 { println!("{:?}", a) }
[INFO] [stderr]     |
[INFO] [stderr] 
[INFO] [stderr] warning: statement can be reduced
[INFO] [stderr]    --> src/main.rs:736:5
[INFO] [stderr]     |
[INFO] [stderr] 736 |     v[i];
[INFO] [stderr]     |     ^^^^^ help: replace it with: `v;i;`
[INFO] [stderr]     |
[INFO] [stderr]     = note: #[warn(clippy::unnecessary_operation)] on by default
[INFO] [stderr]     = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#unnecessary_operation
[INFO] [stderr] 
[INFO] [stderr] warning: you seem to be trying to use match for destructuring a single pattern. Consider using `if let`
[INFO] [stderr]    --> src/main.rs:934:5
[INFO] [stderr]     |
[INFO] [stderr] 934 | /     match optional {
[INFO] [stderr] 935 | |         Some(i) => {
[INFO] [stderr] 936 | |             println!("This is a really long string and `{:?}`", i);
[INFO] [stderr] 937 | |         }
[INFO] [stderr] 938 | |         _ => {}
[INFO] [stderr] 939 | |     }
[INFO] [stderr]     | |_____^
[INFO] [stderr]     |
[INFO] [stderr]     = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#single_match
[INFO] [stderr] help: try this
[INFO] [stderr]     |
[INFO] [stderr] 934 |     if let Some(i) = optional {
[INFO] [stderr] 935 |     println!("This is a really long string and `{:?}`", i);
[INFO] [stderr] 936 | }
[INFO] [stderr]     |
[INFO] [stderr] 
[INFO] [stderr] warning: this loop could be written as a `while let` loop
[INFO] [stderr]    --> src/main.rs:992:5
[INFO] [stderr]     |
[INFO] [stderr] 992 | /     loop {
[INFO] [stderr] 993 | |         match v.pop() {
[INFO] [stderr] 994 | |             Some(x) => println!("{}", x),
[INFO] [stderr] 995 | |             None => break,
[INFO] [stderr] 996 | |         }
[INFO] [stderr] 997 | |     }
[INFO] [stderr]     | |_____^ help: try: `while let Some(x) = v.pop() { .. }`
[INFO] [stderr]     |
[INFO] [stderr]     = note: #[warn(clippy::while_let_loop)] on by default
[INFO] [stderr]     = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#while_let_loop
[INFO] [stderr] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 1.31s
[INFO] running `"docker" "inspect" "970d677f66b0699e317d28b4e217bba798a8d15ee5fba0da2b1586b85bb6a697"`
[INFO] running `"docker" "rm" "-f" "970d677f66b0699e317d28b4e217bba798a8d15ee5fba0da2b1586b85bb6a697"`
[INFO] [stdout] 970d677f66b0699e317d28b4e217bba798a8d15ee5fba0da2b1586b85bb6a697