[INFO] cloning repository https://github.com/Buzov/StudyOfRust
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/Buzov/StudyOfRust" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FBuzov%2FStudyOfRust", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FBuzov%2FStudyOfRust'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 510b5d8abe72245b8b44453cdde7b157418e481d
[INFO] testing Buzov/StudyOfRust against beta-2022-04-10 for beta-1.61-1
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FBuzov%2FStudyOfRust" "/workspace/builds/worker-9/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-9/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/Buzov/StudyOfRust on toolchain beta-2022-04-10
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+beta-2022-04-10" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/Buzov/StudyOfRust
[INFO] finished tweaking git repo https://github.com/Buzov/StudyOfRust
[INFO] tweaked toml for git repo https://github.com/Buzov/StudyOfRust written to /workspace/builds/worker-9/source/Cargo.toml
[INFO] crate git repo https://github.com/Buzov/StudyOfRust already has a lockfile, it will not be regenerated
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+beta-2022-04-10" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-9/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-9/source:/opt/rustwide/workdir:ro,Z" "-v" "/var/lib/crater-agent-workspace/cargo-home:/opt/rustwide/cargo-home:ro,Z" "-v" "/var/lib/crater-agent-workspace/rustup-home:/opt/rustwide/rustup-home:ro,Z" "-e" "SOURCE_DIR=/opt/rustwide/workdir" "-e" "CARGO_TARGET_DIR=/opt/rustwide/target" "-e" "CARGO_HOME=/opt/rustwide/cargo-home" "-e" "RUSTUP_HOME=/opt/rustwide/rustup-home" "-w" "/opt/rustwide/workdir" "-m" "1610612736" "--user" "0:0" "--network" "none" "ghcr.io/rust-lang/crates-build-env/linux@sha256:b0c94ce3c1162fcb8e57cac5b65ec2f72eabb1eebea4fcc35e269e823f681646" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2022-04-10" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] c9bd2ced1a6563b0c1c0e75926278281973eda4ddd1fe83c517efe43d6bbb23b
[INFO] running `Command { std: "docker" "start" "-a" "c9bd2ced1a6563b0c1c0e75926278281973eda4ddd1fe83c517efe43d6bbb23b", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "c9bd2ced1a6563b0c1c0e75926278281973eda4ddd1fe83c517efe43d6bbb23b", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "c9bd2ced1a6563b0c1c0e75926278281973eda4ddd1fe83c517efe43d6bbb23b", kill_on_drop: false }`
[INFO] [stdout] c9bd2ced1a6563b0c1c0e75926278281973eda4ddd1fe83c517efe43d6bbb23b
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-9/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-9/source:/opt/rustwide/workdir:ro,Z" "-v" "/var/lib/crater-agent-workspace/cargo-home:/opt/rustwide/cargo-home:ro,Z" "-v" "/var/lib/crater-agent-workspace/rustup-home:/opt/rustwide/rustup-home:ro,Z" "-e" "SOURCE_DIR=/opt/rustwide/workdir" "-e" "CARGO_TARGET_DIR=/opt/rustwide/target" "-e" "CARGO_INCREMENTAL=0" "-e" "RUST_BACKTRACE=full" "-e" "RUSTFLAGS=--cap-lints=warn" "-e" "CARGO_HOME=/opt/rustwide/cargo-home" "-e" "RUSTUP_HOME=/opt/rustwide/rustup-home" "-w" "/opt/rustwide/workdir" "-m" "1610612736" "--user" "0:0" "--network" "none" "ghcr.io/rust-lang/crates-build-env/linux@sha256:b0c94ce3c1162fcb8e57cac5b65ec2f72eabb1eebea4fcc35e269e823f681646" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2022-04-10" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] fbd6ff5f163dc48e86f5e0aae89e0fb27ec99b60e4a523fc9ed6b2eb4f0e55ae
[INFO] running `Command { std: "docker" "start" "-a" "fbd6ff5f163dc48e86f5e0aae89e0fb27ec99b60e4a523fc9ed6b2eb4f0e55ae", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]    Compiling StudyOfRust v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unreachable expression
[INFO] [stdout]    --> src/structure.rs:187:5
[INFO] [stdout]     |
[INFO] [stdout] 186 |     let x = match void {};
[INFO] [stdout]     |             ------------- any code following this expression is unreachable
[INFO] [stdout] 187 |     x
[INFO] [stdout]     |     ^ unreachable expression
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(unreachable_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unreachable expression
[INFO] [stdout]    --> src/types.rs:229:5
[INFO] [stdout]     |
[INFO] [stdout] 228 |     let x: i32 = exclamation_mark_1();
[INFO] [stdout]     |                  -------------------- any code following this expression is unreachable
[INFO] [stdout] 229 |     x
[INFO] [stdout]     |     ^ unreachable expression
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unreachable expression
[INFO] [stdout]    --> src/types.rs:235:5
[INFO] [stdout]     |
[INFO] [stdout] 234 |     let x = exclamation_mark_2();
[INFO] [stdout]     |             -------------------- any code following this expression is unreachable
[INFO] [stdout] 235 |     x
[INFO] [stdout]     |     ^ unreachable expression
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `t`
[INFO] [stdout]   --> src/structure.rs:42:9
[INFO] [stdout]    |
[INFO] [stdout] 42 |     let t = Zero;
[INFO] [stdout]    |         ^ help: if this is intentional, prefix it with an underscore: `_t`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_variables)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `d1`
[INFO] [stdout]   --> src/structure.rs:50:9
[INFO] [stdout]    |
[INFO] [stdout] 50 |     let d1: Distance<Kilometers> = Distance {
[INFO] [stdout]    |         ^^ help: if this is intentional, prefix it with an underscore: `_d1`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `d2`
[INFO] [stdout]   --> src/structure.rs:54:9
[INFO] [stdout]    |
[INFO] [stdout] 54 |     let d2: Distance<Miles> = Distance {
[INFO] [stdout]    |         ^^ help: if this is intentional, prefix it with an underscore: `_d2`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `value`
[INFO] [stdout]    --> src/structure.rs:127:14
[INFO] [stdout]     |
[INFO] [stdout] 127 |         Some(value) => println!("Some"),
[INFO] [stdout]     |              ^^^^^ help: if this is intentional, prefix it with an underscore: `_value`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `x`
[INFO] [stdout]    --> src/structure.rs:186:9
[INFO] [stdout]     |
[INFO] [stdout] 186 |     let x = match void {};
[INFO] [stdout]     |         ^ help: if this is intentional, prefix it with an underscore: `_x`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `top_right`
[INFO] [stdout]   --> src/structure.rs:91:17
[INFO] [stdout]    |
[INFO] [stdout] 91 |                 top_right,
[INFO] [stdout]    |                 ^^^^^^^^^ help: try ignoring the field: `top_right: _`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `buf`
[INFO] [stdout]   --> src/types.rs:22:13
[INFO] [stdout]    |
[INFO] [stdout] 22 |     let mut buf = [0u8; 1024]; // буфер из 1024 элементов, заполненный нулями
[INFO] [stdout]    |             ^^^ help: if this is intentional, prefix it with an underscore: `_buf`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `x`
[INFO] [stdout]   --> src/types.rs:26:13
[INFO] [stdout]    |
[INFO] [stdout] 26 |     let mut x: i32 = 92;
[INFO] [stdout]    |             ^ help: if this is intentional, prefix it with an underscore: `_x`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `x`
[INFO] [stdout]   --> src/types.rs:37:9
[INFO] [stdout]    |
[INFO] [stdout] 37 |     let x: Box<i32> = Box::new(92);
[INFO] [stdout]    |         ^ help: if this is intentional, prefix it with an underscore: `_x`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `b`
[INFO] [stdout]   --> src/types.rs:46:8
[INFO] [stdout]    |
[INFO] [stdout] 46 | fn bar(b: &i32) {}
[INFO] [stdout]    |        ^ help: if this is intentional, prefix it with an underscore: `_b`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `x`
[INFO] [stdout]   --> src/types.rs:76:9
[INFO] [stdout]    |
[INFO] [stdout] 76 |     let x: () = while false {};
[INFO] [stdout]    |         ^ help: if this is intentional, prefix it with an underscore: `_x`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `x2`
[INFO] [stdout]   --> src/types.rs:77:9
[INFO] [stdout]    |
[INFO] [stdout] 77 |     let x2: () = if true {
[INFO] [stdout]    |         ^^ help: if this is intentional, prefix it with an underscore: `_x2`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `bounded`
[INFO] [stdout]   --> src/types.rs:99:9
[INFO] [stdout]    |
[INFO] [stdout] 99 |     let bounded: std::ops::Range<i32> = 0..10;
[INFO] [stdout]    |         ^^^^^^^ help: if this is intentional, prefix it with an underscore: `_bounded`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `from`
[INFO] [stdout]    --> src/types.rs:100:9
[INFO] [stdout]     |
[INFO] [stdout] 100 |     let from = 0..;
[INFO] [stdout]     |         ^^^^ help: if this is intentional, prefix it with an underscore: `_from`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `to`
[INFO] [stdout]    --> src/types.rs:101:9
[INFO] [stdout]     |
[INFO] [stdout] 101 |     let to = ..10;
[INFO] [stdout]     |         ^^ help: if this is intentional, prefix it with an underscore: `_to`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `full`
[INFO] [stdout]    --> src/types.rs:102:9
[INFO] [stdout]     |
[INFO] [stdout] 102 |     let full = ..;
[INFO] [stdout]     |         ^^^^ help: if this is intentional, prefix it with an underscore: `_full`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `inclusive`
[INFO] [stdout]    --> src/types.rs:103:9
[INFO] [stdout]     |
[INFO] [stdout] 103 |     let inclusive = 0..=9;
[INFO] [stdout]     |         ^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_inclusive`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `s`
[INFO] [stdout]    --> src/types.rs:163:9
[INFO] [stdout]     |
[INFO] [stdout] 163 |     let s = if x > 0 { "positive" } else { "negative" };
[INFO] [stdout]     |         ^ help: if this is intentional, prefix it with an underscore: `_s`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `i`
[INFO] [stdout]    --> src/types.rs:221:9
[INFO] [stdout]     |
[INFO] [stdout] 221 |     let i: i32 = { 1 };
[INFO] [stdout]     |         ^ help: if this is intentional, prefix it with an underscore: `_i`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `i`
[INFO] [stdout]    --> src/types.rs:222:9
[INFO] [stdout]     |
[INFO] [stdout] 222 |     let i: () = {
[INFO] [stdout]     |         ^ help: if this is intentional, prefix it with an underscore: `_i`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `x`
[INFO] [stdout]    --> src/types.rs:228:9
[INFO] [stdout]     |
[INFO] [stdout] 228 |     let x: i32 = exclamation_mark_1();
[INFO] [stdout]     |         ^ help: if this is intentional, prefix it with an underscore: `_x`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `x`
[INFO] [stdout]    --> src/types.rs:234:9
[INFO] [stdout]     |
[INFO] [stdout] 234 |     let x = exclamation_mark_2();
[INFO] [stdout]     |         ^ help: if this is intentional, prefix it with an underscore: `_x`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `one`
[INFO] [stdout]    --> src/types.rs:254:9
[INFO] [stdout]     |
[INFO] [stdout] 254 |     let one: (f32,) = (0.0,); // кортеж из одного элемента, нужна запятая
[INFO] [stdout]     |         ^^^ help: if this is intentional, prefix it with an underscore: `_one`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]   --> src/types.rs:22:9
[INFO] [stdout]    |
[INFO] [stdout] 22 |     let mut buf = [0u8; 1024]; // буфер из 1024 элементов, заполненный нулями
[INFO] [stdout]    |         ----^^^
[INFO] [stdout]    |         |
[INFO] [stdout]    |         help: remove this `mut`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_mut)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]   --> src/types.rs:26:9
[INFO] [stdout]    |
[INFO] [stdout] 26 |     let mut x: i32 = 92;
[INFO] [stdout]    |         ----^
[INFO] [stdout]    |         |
[INFO] [stdout]    |         help: remove this `mut`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `dist`
[INFO] [stdout]   --> src/structure.rs:16:8
[INFO] [stdout]    |
[INFO] [stdout] 16 |     fn dist(self, other: StructTuple) -> f64 {
[INFO] [stdout]    |        ^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct is never constructed: `Kilometers`
[INFO] [stdout]   --> src/structure.rs:29:8
[INFO] [stdout]    |
[INFO] [stdout] 29 | struct Kilometers;
[INFO] [stdout]    |        ^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct is never constructed: `Miles`
[INFO] [stdout]   --> src/structure.rs:30:8
[INFO] [stdout]    |
[INFO] [stdout] 30 | struct Miles;
[INFO] [stdout]    |        ^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct is never constructed: `Distance`
[INFO] [stdout]   --> src/structure.rs:32:8
[INFO] [stdout]    |
[INFO] [stdout] 32 | struct Distance<M> {
[INFO] [stdout]    |        ^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `test_types_struct`
[INFO] [stdout]   --> src/structure.rs:49:4
[INFO] [stdout]    |
[INFO] [stdout] 49 | fn test_types_struct() {
[INFO] [stdout]    |    ^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: enum is never used: `Shape`
[INFO] [stdout]   --> src/structure.rs:71:6
[INFO] [stdout]    |
[INFO] [stdout] 71 | enum Shape {
[INFO] [stdout]    |      ^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `circle`
[INFO] [stdout]   --> src/structure.rs:83:8
[INFO] [stdout]    |
[INFO] [stdout] 83 |     fn circle(center: Point, radius: f64) -> Shape {
[INFO] [stdout]    |        ^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `area`
[INFO] [stdout]   --> src/structure.rs:86:8
[INFO] [stdout]    |
[INFO] [stdout] 86 |     fn area(&self) -> f64 {
[INFO] [stdout]    |        ^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: enum is never used: `Expr`
[INFO] [stdout]   --> src/structure.rs:99:6
[INFO] [stdout]    |
[INFO] [stdout] 99 | enum Expr {
[INFO] [stdout]    |      ^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `binary_search`
[INFO] [stdout]    --> src/structure.rs:112:4
[INFO] [stdout]     |
[INFO] [stdout] 112 | fn binary_search(xs: &[i32], x: i32) -> bool {
[INFO] [stdout]     |    ^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `foo2`
[INFO] [stdout]    --> src/structure.rs:125:4
[INFO] [stdout]     |
[INFO] [stdout] 125 | fn foo2(xs: &[i32]) {
[INFO] [stdout]     |    ^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: enum is never used: `Expr1`
[INFO] [stdout]    --> src/structure.rs:147:6
[INFO] [stdout]     |
[INFO] [stdout] 147 | enum Expr1 {
[INFO] [stdout]     |      ^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: enum is never used: `Expr2`
[INFO] [stdout]    --> src/structure.rs:160:6
[INFO] [stdout]     |
[INFO] [stdout] 160 | enum Expr2 {
[INFO] [stdout]     |      ^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct is never constructed: `BinOp`
[INFO] [stdout]    --> src/structure.rs:165:8
[INFO] [stdout]     |
[INFO] [stdout] 165 | struct BinOp {
[INFO] [stdout]     |        ^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct is never constructed: `If`
[INFO] [stdout]    --> src/structure.rs:171:8
[INFO] [stdout]     |
[INFO] [stdout] 171 | struct If {
[INFO] [stdout]     |        ^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct is never constructed: `Op`
[INFO] [stdout]    --> src/structure.rs:177:8
[INFO] [stdout]     |
[INFO] [stdout] 177 | struct Op {
[INFO] [stdout]     |        ^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: enum is never used: `Void`
[INFO] [stdout]    --> src/structure.rs:183:6
[INFO] [stdout]     |
[INFO] [stdout] 183 | enum Void {}
[INFO] [stdout]     |      ^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `test_enum_void`
[INFO] [stdout]    --> src/structure.rs:185:4
[INFO] [stdout]     |
[INFO] [stdout] 185 | fn test_enum_void(void: Void) -> i32 {
[INFO] [stdout]     |    ^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `array`
[INFO] [stdout]   --> src/types.rs:18:4
[INFO] [stdout]    |
[INFO] [stdout] 18 | fn array() {
[INFO] [stdout]    |    ^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `box_test`
[INFO] [stdout]   --> src/types.rs:36:15
[INFO] [stdout]    |
[INFO] [stdout] 36 | pub(super) fn box_test() {
[INFO] [stdout]    |               ^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `foo`
[INFO] [stdout]   --> src/types.rs:40:4
[INFO] [stdout]    |
[INFO] [stdout] 40 | fn foo() {
[INFO] [stdout]    |    ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `bar`
[INFO] [stdout]   --> src/types.rs:46:4
[INFO] [stdout]    |
[INFO] [stdout] 46 | fn bar(b: &i32) {}
[INFO] [stdout]    |    ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `test_vec`
[INFO] [stdout]   --> src/types.rs:48:15
[INFO] [stdout]    |
[INFO] [stdout] 48 | pub(super) fn test_vec() {
[INFO] [stdout]    |               ^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `test_ranges`
[INFO] [stdout]   --> src/types.rs:98:15
[INFO] [stdout]    |
[INFO] [stdout] 98 | pub(super) fn test_ranges() {
[INFO] [stdout]    |               ^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `test_loop`
[INFO] [stdout]    --> src/types.rs:110:15
[INFO] [stdout]     |
[INFO] [stdout] 110 | pub(super) fn test_loop() {
[INFO] [stdout]     |               ^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `test_loop_2`
[INFO] [stdout]    --> src/types.rs:130:15
[INFO] [stdout]     |
[INFO] [stdout] 130 | pub(super) fn test_loop_2() {
[INFO] [stdout]     |               ^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `test_loop_3`
[INFO] [stdout]    --> src/types.rs:142:15
[INFO] [stdout]     |
[INFO] [stdout] 142 | pub(super) fn test_loop_3() {
[INFO] [stdout]     |               ^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `test_expression`
[INFO] [stdout]    --> src/types.rs:153:15
[INFO] [stdout]     |
[INFO] [stdout] 153 | pub(super) fn test_expression() -> i32 {
[INFO] [stdout]     |               ^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `test_fn_like_parameter`
[INFO] [stdout]    --> src/types.rs:177:15
[INFO] [stdout]     |
[INFO] [stdout] 177 | pub(super) fn test_fn_like_parameter() {
[INFO] [stdout]     |               ^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `fn_like_parameter`
[INFO] [stdout]    --> src/types.rs:189:4
[INFO] [stdout]     |
[INFO] [stdout] 189 | fn fn_like_parameter(func: fn(i32) -> i32, i: i32) -> i32 {
[INFO] [stdout]     |    ^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `block`
[INFO] [stdout]    --> src/types.rs:220:4
[INFO] [stdout]     |
[INFO] [stdout] 220 | fn block() {
[INFO] [stdout]     |    ^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `exclamation_mark_0`
[INFO] [stdout]    --> src/types.rs:227:4
[INFO] [stdout]     |
[INFO] [stdout] 227 | fn exclamation_mark_0() -> i32 {
[INFO] [stdout]     |    ^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `exclamation_mark_1`
[INFO] [stdout]    --> src/types.rs:232:4
[INFO] [stdout]     |
[INFO] [stdout] 232 | fn exclamation_mark_1() -> ! {
[INFO] [stdout]     |    ^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `exclamation_mark_2`
[INFO] [stdout]    --> src/types.rs:238:4
[INFO] [stdout]     |
[INFO] [stdout] 238 | fn exclamation_mark_2() -> ! {
[INFO] [stdout]     |    ^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `tuple_fn`
[INFO] [stdout]    --> src/types.rs:267:4
[INFO] [stdout]     |
[INFO] [stdout] 267 | fn tuple_fn(fun: &dyn Fn() -> (f64, f64)) -> (f64, f64) {
[INFO] [stdout]     |    ^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `print_slice`
[INFO] [stdout]    --> src/types.rs:284:4
[INFO] [stdout]     |
[INFO] [stdout] 284 | fn print_slice(xs: &[i32]) {
[INFO] [stdout]     |    ^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: crate `StudyOfRust` should have a snake case name
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(non_snake_case)]` on by default
[INFO] [stdout]   = help: convert the identifier to snake case: `study_of_rust`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 65 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 1.38s
[INFO] running `Command { std: "docker" "inspect" "fbd6ff5f163dc48e86f5e0aae89e0fb27ec99b60e4a523fc9ed6b2eb4f0e55ae", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "fbd6ff5f163dc48e86f5e0aae89e0fb27ec99b60e4a523fc9ed6b2eb4f0e55ae", kill_on_drop: false }`
[INFO] [stdout] fbd6ff5f163dc48e86f5e0aae89e0fb27ec99b60e4a523fc9ed6b2eb4f0e55ae
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-9/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-9/source:/opt/rustwide/workdir:ro,Z" "-v" "/var/lib/crater-agent-workspace/cargo-home:/opt/rustwide/cargo-home:ro,Z" "-v" "/var/lib/crater-agent-workspace/rustup-home:/opt/rustwide/rustup-home:ro,Z" "-e" "SOURCE_DIR=/opt/rustwide/workdir" "-e" "CARGO_TARGET_DIR=/opt/rustwide/target" "-e" "CARGO_INCREMENTAL=0" "-e" "RUST_BACKTRACE=full" "-e" "RUSTFLAGS=--cap-lints=warn" "-e" "CARGO_HOME=/opt/rustwide/cargo-home" "-e" "RUSTUP_HOME=/opt/rustwide/rustup-home" "-w" "/opt/rustwide/workdir" "-m" "1610612736" "--user" "0:0" "--network" "none" "ghcr.io/rust-lang/crates-build-env/linux@sha256:b0c94ce3c1162fcb8e57cac5b65ec2f72eabb1eebea4fcc35e269e823f681646" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2022-04-10" "test" "--frozen" "--no-run" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] f281121bcd5af3319bffd282a0e33b3c85c8be78f116158b8e3640290b0af7e4
[INFO] running `Command { std: "docker" "start" "-a" "f281121bcd5af3319bffd282a0e33b3c85c8be78f116158b8e3640290b0af7e4", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]    Compiling StudyOfRust v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unreachable expression
[INFO] [stdout]    --> src/structure.rs:187:5
[INFO] [stdout]     |
[INFO] [stdout] 186 |     let x = match void {};
[INFO] [stdout]     |             ------------- any code following this expression is unreachable
[INFO] [stdout] 187 |     x
[INFO] [stdout]     |     ^ unreachable expression
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(unreachable_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unreachable expression
[INFO] [stdout]    --> src/types.rs:229:5
[INFO] [stdout]     |
[INFO] [stdout] 228 |     let x: i32 = exclamation_mark_1();
[INFO] [stdout]     |                  -------------------- any code following this expression is unreachable
[INFO] [stdout] 229 |     x
[INFO] [stdout]     |     ^ unreachable expression
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unreachable expression
[INFO] [stdout]    --> src/types.rs:235:5
[INFO] [stdout]     |
[INFO] [stdout] 234 |     let x = exclamation_mark_2();
[INFO] [stdout]     |             -------------------- any code following this expression is unreachable
[INFO] [stdout] 235 |     x
[INFO] [stdout]     |     ^ unreachable expression
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `t`
[INFO] [stdout]   --> src/structure.rs:42:9
[INFO] [stdout]    |
[INFO] [stdout] 42 |     let t = Zero;
[INFO] [stdout]    |         ^ help: if this is intentional, prefix it with an underscore: `_t`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_variables)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `d1`
[INFO] [stdout]   --> src/structure.rs:50:9
[INFO] [stdout]    |
[INFO] [stdout] 50 |     let d1: Distance<Kilometers> = Distance {
[INFO] [stdout]    |         ^^ help: if this is intentional, prefix it with an underscore: `_d1`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `d2`
[INFO] [stdout]   --> src/structure.rs:54:9
[INFO] [stdout]    |
[INFO] [stdout] 54 |     let d2: Distance<Miles> = Distance {
[INFO] [stdout]    |         ^^ help: if this is intentional, prefix it with an underscore: `_d2`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `value`
[INFO] [stdout]    --> src/structure.rs:127:14
[INFO] [stdout]     |
[INFO] [stdout] 127 |         Some(value) => println!("Some"),
[INFO] [stdout]     |              ^^^^^ help: if this is intentional, prefix it with an underscore: `_value`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `x`
[INFO] [stdout]    --> src/structure.rs:186:9
[INFO] [stdout]     |
[INFO] [stdout] 186 |     let x = match void {};
[INFO] [stdout]     |         ^ help: if this is intentional, prefix it with an underscore: `_x`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `top_right`
[INFO] [stdout]   --> src/structure.rs:91:17
[INFO] [stdout]    |
[INFO] [stdout] 91 |                 top_right,
[INFO] [stdout]    |                 ^^^^^^^^^ help: try ignoring the field: `top_right: _`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `buf`
[INFO] [stdout]   --> src/types.rs:22:13
[INFO] [stdout]    |
[INFO] [stdout] 22 |     let mut buf = [0u8; 1024]; // буфер из 1024 элементов, заполненный нулями
[INFO] [stdout]    |             ^^^ help: if this is intentional, prefix it with an underscore: `_buf`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `x`
[INFO] [stdout]   --> src/types.rs:26:13
[INFO] [stdout]    |
[INFO] [stdout] 26 |     let mut x: i32 = 92;
[INFO] [stdout]    |             ^ help: if this is intentional, prefix it with an underscore: `_x`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `x`
[INFO] [stdout]   --> src/types.rs:37:9
[INFO] [stdout]    |
[INFO] [stdout] 37 |     let x: Box<i32> = Box::new(92);
[INFO] [stdout]    |         ^ help: if this is intentional, prefix it with an underscore: `_x`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `b`
[INFO] [stdout]   --> src/types.rs:46:8
[INFO] [stdout]    |
[INFO] [stdout] 46 | fn bar(b: &i32) {}
[INFO] [stdout]    |        ^ help: if this is intentional, prefix it with an underscore: `_b`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `x`
[INFO] [stdout]   --> src/types.rs:76:9
[INFO] [stdout]    |
[INFO] [stdout] 76 |     let x: () = while false {};
[INFO] [stdout]    |         ^ help: if this is intentional, prefix it with an underscore: `_x`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `x2`
[INFO] [stdout]   --> src/types.rs:77:9
[INFO] [stdout]    |
[INFO] [stdout] 77 |     let x2: () = if true {
[INFO] [stdout]    |         ^^ help: if this is intentional, prefix it with an underscore: `_x2`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `bounded`
[INFO] [stdout]   --> src/types.rs:99:9
[INFO] [stdout]    |
[INFO] [stdout] 99 |     let bounded: std::ops::Range<i32> = 0..10;
[INFO] [stdout]    |         ^^^^^^^ help: if this is intentional, prefix it with an underscore: `_bounded`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `from`
[INFO] [stdout]    --> src/types.rs:100:9
[INFO] [stdout]     |
[INFO] [stdout] 100 |     let from = 0..;
[INFO] [stdout]     |         ^^^^ help: if this is intentional, prefix it with an underscore: `_from`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `to`
[INFO] [stdout]    --> src/types.rs:101:9
[INFO] [stdout]     |
[INFO] [stdout] 101 |     let to = ..10;
[INFO] [stdout]     |         ^^ help: if this is intentional, prefix it with an underscore: `_to`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `full`
[INFO] [stdout]    --> src/types.rs:102:9
[INFO] [stdout]     |
[INFO] [stdout] 102 |     let full = ..;
[INFO] [stdout]     |         ^^^^ help: if this is intentional, prefix it with an underscore: `_full`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `inclusive`
[INFO] [stdout]    --> src/types.rs:103:9
[INFO] [stdout]     |
[INFO] [stdout] 103 |     let inclusive = 0..=9;
[INFO] [stdout]     |         ^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_inclusive`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `s`
[INFO] [stdout]    --> src/types.rs:163:9
[INFO] [stdout]     |
[INFO] [stdout] 163 |     let s = if x > 0 { "positive" } else { "negative" };
[INFO] [stdout]     |         ^ help: if this is intentional, prefix it with an underscore: `_s`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `i`
[INFO] [stdout]    --> src/types.rs:221:9
[INFO] [stdout]     |
[INFO] [stdout] 221 |     let i: i32 = { 1 };
[INFO] [stdout]     |         ^ help: if this is intentional, prefix it with an underscore: `_i`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `i`
[INFO] [stdout]    --> src/types.rs:222:9
[INFO] [stdout]     |
[INFO] [stdout] 222 |     let i: () = {
[INFO] [stdout]     |         ^ help: if this is intentional, prefix it with an underscore: `_i`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `x`
[INFO] [stdout]    --> src/types.rs:228:9
[INFO] [stdout]     |
[INFO] [stdout] 228 |     let x: i32 = exclamation_mark_1();
[INFO] [stdout]     |         ^ help: if this is intentional, prefix it with an underscore: `_x`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `x`
[INFO] [stdout]    --> src/types.rs:234:9
[INFO] [stdout]     |
[INFO] [stdout] 234 |     let x = exclamation_mark_2();
[INFO] [stdout]     |         ^ help: if this is intentional, prefix it with an underscore: `_x`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `one`
[INFO] [stdout]    --> src/types.rs:254:9
[INFO] [stdout]     |
[INFO] [stdout] 254 |     let one: (f32,) = (0.0,); // кортеж из одного элемента, нужна запятая
[INFO] [stdout]     |         ^^^ help: if this is intentional, prefix it with an underscore: `_one`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]   --> src/types.rs:22:9
[INFO] [stdout]    |
[INFO] [stdout] 22 |     let mut buf = [0u8; 1024]; // буфер из 1024 элементов, заполненный нулями
[INFO] [stdout]    |         ----^^^
[INFO] [stdout]    |         |
[INFO] [stdout]    |         help: remove this `mut`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_mut)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]   --> src/types.rs:26:9
[INFO] [stdout]    |
[INFO] [stdout] 26 |     let mut x: i32 = 92;
[INFO] [stdout]    |         ----^
[INFO] [stdout]    |         |
[INFO] [stdout]    |         help: remove this `mut`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `dist`
[INFO] [stdout]   --> src/structure.rs:16:8
[INFO] [stdout]    |
[INFO] [stdout] 16 |     fn dist(self, other: StructTuple) -> f64 {
[INFO] [stdout]    |        ^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct is never constructed: `Kilometers`
[INFO] [stdout]   --> src/structure.rs:29:8
[INFO] [stdout]    |
[INFO] [stdout] 29 | struct Kilometers;
[INFO] [stdout]    |        ^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct is never constructed: `Miles`
[INFO] [stdout]   --> src/structure.rs:30:8
[INFO] [stdout]    |
[INFO] [stdout] 30 | struct Miles;
[INFO] [stdout]    |        ^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct is never constructed: `Distance`
[INFO] [stdout]   --> src/structure.rs:32:8
[INFO] [stdout]    |
[INFO] [stdout] 32 | struct Distance<M> {
[INFO] [stdout]    |        ^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `test_types_struct`
[INFO] [stdout]   --> src/structure.rs:49:4
[INFO] [stdout]    |
[INFO] [stdout] 49 | fn test_types_struct() {
[INFO] [stdout]    |    ^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: enum is never used: `Shape`
[INFO] [stdout]   --> src/structure.rs:71:6
[INFO] [stdout]    |
[INFO] [stdout] 71 | enum Shape {
[INFO] [stdout]    |      ^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `circle`
[INFO] [stdout]   --> src/structure.rs:83:8
[INFO] [stdout]    |
[INFO] [stdout] 83 |     fn circle(center: Point, radius: f64) -> Shape {
[INFO] [stdout]    |        ^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `area`
[INFO] [stdout]   --> src/structure.rs:86:8
[INFO] [stdout]    |
[INFO] [stdout] 86 |     fn area(&self) -> f64 {
[INFO] [stdout]    |        ^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: enum is never used: `Expr`
[INFO] [stdout]   --> src/structure.rs:99:6
[INFO] [stdout]    |
[INFO] [stdout] 99 | enum Expr {
[INFO] [stdout]    |      ^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `binary_search`
[INFO] [stdout]    --> src/structure.rs:112:4
[INFO] [stdout]     |
[INFO] [stdout] 112 | fn binary_search(xs: &[i32], x: i32) -> bool {
[INFO] [stdout]     |    ^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `foo2`
[INFO] [stdout]    --> src/structure.rs:125:4
[INFO] [stdout]     |
[INFO] [stdout] 125 | fn foo2(xs: &[i32]) {
[INFO] [stdout]     |    ^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: enum is never used: `Expr1`
[INFO] [stdout]    --> src/structure.rs:147:6
[INFO] [stdout]     |
[INFO] [stdout] 147 | enum Expr1 {
[INFO] [stdout]     |      ^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: enum is never used: `Expr2`
[INFO] [stdout]    --> src/structure.rs:160:6
[INFO] [stdout]     |
[INFO] [stdout] 160 | enum Expr2 {
[INFO] [stdout]     |      ^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct is never constructed: `BinOp`
[INFO] [stdout]    --> src/structure.rs:165:8
[INFO] [stdout]     |
[INFO] [stdout] 165 | struct BinOp {
[INFO] [stdout]     |        ^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct is never constructed: `If`
[INFO] [stdout]    --> src/structure.rs:171:8
[INFO] [stdout]     |
[INFO] [stdout] 171 | struct If {
[INFO] [stdout]     |        ^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct is never constructed: `Op`
[INFO] [stdout]    --> src/structure.rs:177:8
[INFO] [stdout]     |
[INFO] [stdout] 177 | struct Op {
[INFO] [stdout]     |        ^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: enum is never used: `Void`
[INFO] [stdout]    --> src/structure.rs:183:6
[INFO] [stdout]     |
[INFO] [stdout] 183 | enum Void {}
[INFO] [stdout]     |      ^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `test_enum_void`
[INFO] [stdout]    --> src/structure.rs:185:4
[INFO] [stdout]     |
[INFO] [stdout] 185 | fn test_enum_void(void: Void) -> i32 {
[INFO] [stdout]     |    ^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `array`
[INFO] [stdout]   --> src/types.rs:18:4
[INFO] [stdout]    |
[INFO] [stdout] 18 | fn array() {
[INFO] [stdout]    |    ^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `box_test`
[INFO] [stdout]   --> src/types.rs:36:15
[INFO] [stdout]    |
[INFO] [stdout] 36 | pub(super) fn box_test() {
[INFO] [stdout]    |               ^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `foo`
[INFO] [stdout]   --> src/types.rs:40:4
[INFO] [stdout]    |
[INFO] [stdout] 40 | fn foo() {
[INFO] [stdout]    |    ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `bar`
[INFO] [stdout]   --> src/types.rs:46:4
[INFO] [stdout]    |
[INFO] [stdout] 46 | fn bar(b: &i32) {}
[INFO] [stdout]    |    ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `test_vec`
[INFO] [stdout]   --> src/types.rs:48:15
[INFO] [stdout]    |
[INFO] [stdout] 48 | pub(super) fn test_vec() {
[INFO] [stdout]    |               ^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `test_ranges`
[INFO] [stdout]   --> src/types.rs:98:15
[INFO] [stdout]    |
[INFO] [stdout] 98 | pub(super) fn test_ranges() {
[INFO] [stdout]    |               ^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `test_loop`
[INFO] [stdout]    --> src/types.rs:110:15
[INFO] [stdout]     |
[INFO] [stdout] 110 | pub(super) fn test_loop() {
[INFO] [stdout]     |               ^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `test_loop_2`
[INFO] [stdout]    --> src/types.rs:130:15
[INFO] [stdout]     |
[INFO] [stdout] 130 | pub(super) fn test_loop_2() {
[INFO] [stdout]     |               ^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `test_loop_3`
[INFO] [stdout]    --> src/types.rs:142:15
[INFO] [stdout]     |
[INFO] [stdout] 142 | pub(super) fn test_loop_3() {
[INFO] [stdout]     |               ^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `test_expression`
[INFO] [stdout]    --> src/types.rs:153:15
[INFO] [stdout]     |
[INFO] [stdout] 153 | pub(super) fn test_expression() -> i32 {
[INFO] [stdout]     |               ^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `test_fn_like_parameter`
[INFO] [stdout]    --> src/types.rs:177:15
[INFO] [stdout]     |
[INFO] [stdout] 177 | pub(super) fn test_fn_like_parameter() {
[INFO] [stdout]     |               ^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `fn_like_parameter`
[INFO] [stdout]    --> src/types.rs:189:4
[INFO] [stdout]     |
[INFO] [stdout] 189 | fn fn_like_parameter(func: fn(i32) -> i32, i: i32) -> i32 {
[INFO] [stdout]     |    ^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `block`
[INFO] [stdout]    --> src/types.rs:220:4
[INFO] [stdout]     |
[INFO] [stdout] 220 | fn block() {
[INFO] [stdout]     |    ^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `exclamation_mark_0`
[INFO] [stdout]    --> src/types.rs:227:4
[INFO] [stdout]     |
[INFO] [stdout] 227 | fn exclamation_mark_0() -> i32 {
[INFO] [stdout]     |    ^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `exclamation_mark_1`
[INFO] [stdout]    --> src/types.rs:232:4
[INFO] [stdout]     |
[INFO] [stdout] 232 | fn exclamation_mark_1() -> ! {
[INFO] [stdout]     |    ^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `exclamation_mark_2`
[INFO] [stdout]    --> src/types.rs:238:4
[INFO] [stdout]     |
[INFO] [stdout] 238 | fn exclamation_mark_2() -> ! {
[INFO] [stdout]     |    ^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `tuple_fn`
[INFO] [stdout]    --> src/types.rs:267:4
[INFO] [stdout]     |
[INFO] [stdout] 267 | fn tuple_fn(fun: &dyn Fn() -> (f64, f64)) -> (f64, f64) {
[INFO] [stdout]     |    ^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `print_slice`
[INFO] [stdout]    --> src/types.rs:284:4
[INFO] [stdout]     |
[INFO] [stdout] 284 | fn print_slice(xs: &[i32]) {
[INFO] [stdout]     |    ^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: crate `StudyOfRust` should have a snake case name
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(non_snake_case)]` on by default
[INFO] [stdout]   = help: convert the identifier to snake case: `study_of_rust`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 65 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 0.48s
[INFO] [stderr]   Executable unittests src/main.rs (/opt/rustwide/target/debug/deps/StudyOfRust-ca626dc749caa203)
[INFO] running `Command { std: "docker" "inspect" "f281121bcd5af3319bffd282a0e33b3c85c8be78f116158b8e3640290b0af7e4", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "f281121bcd5af3319bffd282a0e33b3c85c8be78f116158b8e3640290b0af7e4", kill_on_drop: false }`
[INFO] [stdout] f281121bcd5af3319bffd282a0e33b3c85c8be78f116158b8e3640290b0af7e4
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-9/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-9/source:/opt/rustwide/workdir:ro,Z" "-v" "/var/lib/crater-agent-workspace/cargo-home:/opt/rustwide/cargo-home:ro,Z" "-v" "/var/lib/crater-agent-workspace/rustup-home:/opt/rustwide/rustup-home:ro,Z" "-e" "SOURCE_DIR=/opt/rustwide/workdir" "-e" "CARGO_TARGET_DIR=/opt/rustwide/target" "-e" "CARGO_INCREMENTAL=0" "-e" "RUST_BACKTRACE=full" "-e" "RUSTFLAGS=--cap-lints=warn" "-e" "CARGO_HOME=/opt/rustwide/cargo-home" "-e" "RUSTUP_HOME=/opt/rustwide/rustup-home" "-w" "/opt/rustwide/workdir" "-m" "1610612736" "--user" "0:0" "--network" "none" "ghcr.io/rust-lang/crates-build-env/linux@sha256:b0c94ce3c1162fcb8e57cac5b65ec2f72eabb1eebea4fcc35e269e823f681646" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2022-04-10" "test" "--frozen", kill_on_drop: false }`
[INFO] [stdout] b758f58c9c8ec6664abbddb7667582c25daf9fabd0592875bdda243e3ed33d11
[INFO] running `Command { std: "docker" "start" "-a" "b758f58c9c8ec6664abbddb7667582c25daf9fabd0592875bdda243e3ed33d11", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr] warning: unreachable expression
[INFO] [stderr]    --> src/structure.rs:187:5
[INFO] [stderr]     |
[INFO] [stderr] 186 |     let x = match void {};
[INFO] [stderr]     |             ------------- any code following this expression is unreachable
[INFO] [stderr] 187 |     x
[INFO] [stderr]     |     ^ unreachable expression
[INFO] [stderr]     |
[INFO] [stderr]     = note: `#[warn(unreachable_code)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: unreachable expression
[INFO] [stderr]    --> src/types.rs:229:5
[INFO] [stderr]     |
[INFO] [stderr] 228 |     let x: i32 = exclamation_mark_1();
[INFO] [stderr]     |                  -------------------- any code following this expression is unreachable
[INFO] [stderr] 229 |     x
[INFO] [stderr]     |     ^ unreachable expression
[INFO] [stderr] 
[INFO] [stderr] warning: unreachable expression
[INFO] [stderr]    --> src/types.rs:235:5
[INFO] [stderr]     |
[INFO] [stderr] 234 |     let x = exclamation_mark_2();
[INFO] [stderr]     |             -------------------- any code following this expression is unreachable
[INFO] [stderr] 235 |     x
[INFO] [stderr]     |     ^ unreachable expression
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `t`
[INFO] [stderr]   --> src/structure.rs:42:9
[INFO] [stderr]    |
[INFO] [stderr] 42 |     let t = Zero;
[INFO] [stderr]    |         ^ help: if this is intentional, prefix it with an underscore: `_t`
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(unused_variables)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `d1`
[INFO] [stderr]   --> src/structure.rs:50:9
[INFO] [stderr]    |
[INFO] [stderr] 50 |     let d1: Distance<Kilometers> = Distance {
[INFO] [stderr]    |         ^^ help: if this is intentional, prefix it with an underscore: `_d1`
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `d2`
[INFO] [stderr]   --> src/structure.rs:54:9
[INFO] [stderr]    |
[INFO] [stderr] 54 |     let d2: Distance<Miles> = Distance {
[INFO] [stderr]    |         ^^ help: if this is intentional, prefix it with an underscore: `_d2`
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `value`
[INFO] [stderr]    --> src/structure.rs:127:14
[INFO] [stderr]     |
[INFO] [stderr] 127 |         Some(value) => println!("Some"),
[INFO] [stderr]     |              ^^^^^ help: if this is intentional, prefix it with an underscore: `_value`
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `x`
[INFO] [stderr]    --> src/structure.rs:186:9
[INFO] [stderr]     |
[INFO] [stderr] 186 |     let x = match void {};
[INFO] [stderr]     |         ^ help: if this is intentional, prefix it with an underscore: `_x`
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `top_right`
[INFO] [stderr]   --> src/structure.rs:91:17
[INFO] [stderr]    |
[INFO] [stderr] 91 |                 top_right,
[INFO] [stderr]    |                 ^^^^^^^^^ help: try ignoring the field: `top_right: _`
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `buf`
[INFO] [stderr]   --> src/types.rs:22:13
[INFO] [stderr]    |
[INFO] [stderr] 22 |     let mut buf = [0u8; 1024]; // буфер из 1024 элементов, заполненный нулями
[INFO] [stderr]    |             ^^^ help: if this is intentional, prefix it with an underscore: `_buf`
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `x`
[INFO] [stderr]   --> src/types.rs:26:13
[INFO] [stderr]    |
[INFO] [stderr] 26 |     let mut x: i32 = 92;
[INFO] [stderr]    |             ^ help: if this is intentional, prefix it with an underscore: `_x`
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `x`
[INFO] [stderr]   --> src/types.rs:37:9
[INFO] [stderr]    |
[INFO] [stderr] 37 |     let x: Box<i32> = Box::new(92);
[INFO] [stderr]    |         ^ help: if this is intentional, prefix it with an underscore: `_x`
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `b`
[INFO] [stderr]   --> src/types.rs:46:8
[INFO] [stderr]    |
[INFO] [stderr] 46 | fn bar(b: &i32) {}
[INFO] [stderr]    |        ^ help: if this is intentional, prefix it with an underscore: `_b`
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `x`
[INFO] [stderr]   --> src/types.rs:76:9
[INFO] [stderr]    |
[INFO] [stderr] 76 |     let x: () = while false {};
[INFO] [stderr]    |         ^ help: if this is intentional, prefix it with an underscore: `_x`
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `x2`
[INFO] [stderr]   --> src/types.rs:77:9
[INFO] [stderr]    |
[INFO] [stderr] 77 |     let x2: () = if true {
[INFO] [stderr]    |         ^^ help: if this is intentional, prefix it with an underscore: `_x2`
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `bounded`
[INFO] [stderr]   --> src/types.rs:99:9
[INFO] [stderr]    |
[INFO] [stderr] 99 |     let bounded: std::ops::Range<i32> = 0..10;
[INFO] [stderr]    |         ^^^^^^^ help: if this is intentional, prefix it with an underscore: `_bounded`
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `from`
[INFO] [stderr]    --> src/types.rs:100:9
[INFO] [stderr]     |
[INFO] [stderr] 100 |     let from = 0..;
[INFO] [stderr]     |         ^^^^ help: if this is intentional, prefix it with an underscore: `_from`
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `to`
[INFO] [stderr]    --> src/types.rs:101:9
[INFO] [stderr]     |
[INFO] [stderr] 101 |     let to = ..10;
[INFO] [stderr]     |         ^^ help: if this is intentional, prefix it with an underscore: `_to`
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `full`
[INFO] [stderr]    --> src/types.rs:102:9
[INFO] [stderr]     |
[INFO] [stderr] 102 |     let full = ..;
[INFO] [stderr]     |         ^^^^ help: if this is intentional, prefix it with an underscore: `_full`
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `inclusive`
[INFO] [stderr]    --> src/types.rs:103:9
[INFO] [stderr]     |
[INFO] [stderr] 103 |     let inclusive = 0..=9;
[INFO] [stderr]     |         ^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_inclusive`
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `s`
[INFO] [stderr]    --> src/types.rs:163:9
[INFO] [stderr]     |
[INFO] [stderr] 163 |     let s = if x > 0 { "positive" } else { "negative" };
[INFO] [stderr]     |         ^ help: if this is intentional, prefix it with an underscore: `_s`
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `i`
[INFO] [stderr]    --> src/types.rs:221:9
[INFO] [stderr]     |
[INFO] [stderr] 221 |     let i: i32 = { 1 };
[INFO] [stderr]     |         ^ help: if this is intentional, prefix it with an underscore: `_i`
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `i`
[INFO] [stderr]    --> src/types.rs:222:9
[INFO] [stderr]     |
[INFO] [stderr] 222 |     let i: () = {
[INFO] [stderr]     |         ^ help: if this is intentional, prefix it with an underscore: `_i`
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `x`
[INFO] [stderr]    --> src/types.rs:228:9
[INFO] [stderr]     |
[INFO] [stderr] 228 |     let x: i32 = exclamation_mark_1();
[INFO] [stderr]     |         ^ help: if this is intentional, prefix it with an underscore: `_x`
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `x`
[INFO] [stderr]    --> src/types.rs:234:9
[INFO] [stderr]     |
[INFO] [stderr] 234 |     let x = exclamation_mark_2();
[INFO] [stderr]     |         ^ help: if this is intentional, prefix it with an underscore: `_x`
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `one`
[INFO] [stderr]    --> src/types.rs:254:9
[INFO] [stderr]     |
[INFO] [stderr] 254 |     let one: (f32,) = (0.0,); // кортеж из одного элемента, нужна запятая
[INFO] [stderr]     |         ^^^ help: if this is intentional, prefix it with an underscore: `_one`
[INFO] [stderr] 
[INFO] [stderr] warning: variable does not need to be mutable
[INFO] [stderr]   --> src/types.rs:22:9
[INFO] [stderr]    |
[INFO] [stderr] 22 |     let mut buf = [0u8; 1024]; // буфер из 1024 элементов, заполненный нулями
[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/types.rs:26:9
[INFO] [stderr]    |
[INFO] [stderr] 26 |     let mut x: i32 = 92;
[INFO] [stderr]    |         ----^
[INFO] [stderr]    |         |
[INFO] [stderr]    |         help: remove this `mut`
[INFO] [stderr] 
[INFO] [stderr] warning: associated function is never used: `dist`
[INFO] [stderr]   --> src/structure.rs:16:8
[INFO] [stderr]    |
[INFO] [stderr] 16 |     fn dist(self, other: StructTuple) -> f64 {
[INFO] [stderr]    |        ^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(dead_code)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: struct is never constructed: `Kilometers`
[INFO] [stderr]   --> src/structure.rs:29:8
[INFO] [stderr]    |
[INFO] [stderr] 29 | struct Kilometers;
[INFO] [stderr]    |        ^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: struct is never constructed: `Miles`
[INFO] [stderr]   --> src/structure.rs:30:8
[INFO] [stderr]    |
[INFO] [stderr] 30 | struct Miles;
[INFO] [stderr]    |        ^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: struct is never constructed: `Distance`
[INFO] [stderr]   --> src/structure.rs:32:8
[INFO] [stderr]    |
[INFO] [stderr] 32 | struct Distance<M> {
[INFO] [stderr]    |        ^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: function is never used: `test_types_struct`
[INFO] [stderr]   --> src/structure.rs:49:4
[INFO] [stderr]    |
[INFO] [stderr] 49 | fn test_types_struct() {
[INFO] [stderr]    |    ^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: enum is never used: `Shape`
[INFO] [stderr]   --> src/structure.rs:71:6
[INFO] [stderr]    |
[INFO] [stderr] 71 | enum Shape {
[INFO] [stderr]    |      ^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: associated function is never used: `circle`
[INFO] [stderr]   --> src/structure.rs:83:8
[INFO] [stderr]    |
[INFO] [stderr] 83 |     fn circle(center: Point, radius: f64) -> Shape {
[INFO] [stderr]    |        ^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: associated function is never used: `area`
[INFO] [stderr]   --> src/structure.rs:86:8
[INFO] [stderr]    |
[INFO] [stderr] 86 |     fn area(&self) -> f64 {
[INFO] [stderr]    |        ^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: enum is never used: `Expr`
[INFO] [stderr]   --> src/structure.rs:99:6
[INFO] [stderr]    |
[INFO] [stderr] 99 | enum Expr {
[INFO] [stderr]    |      ^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: function is never used: `binary_search`
[INFO] [stderr]    --> src/structure.rs:112:4
[INFO] [stderr]     |
[INFO] [stderr] 112 | fn binary_search(xs: &[i32], x: i32) -> bool {
[INFO] [stderr]     |    ^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: function is never used: `foo2`
[INFO] [stderr]    --> src/structure.rs:125:4
[INFO] [stderr]     |
[INFO] [stderr] 125 | fn foo2(xs: &[i32]) {
[INFO] [stderr]     |    ^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: enum is never used: `Expr1`
[INFO] [stderr]    --> src/structure.rs:147:6
[INFO] [stderr]     |
[INFO] [stderr] 147 | enum Expr1 {
[INFO] [stderr]     |      ^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: enum is never used: `Expr2`
[INFO] [stderr]    --> src/structure.rs:160:6
[INFO] [stderr]     |
[INFO] [stderr] 160 | enum Expr2 {
[INFO] [stderr]     |      ^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: struct is never constructed: `BinOp`
[INFO] [stderr]    --> src/structure.rs:165:8
[INFO] [stderr]     |
[INFO] [stderr] 165 | struct BinOp {
[INFO] [stderr]     |        ^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: struct is never constructed: `If`
[INFO] [stderr]    --> src/structure.rs:171:8
[INFO] [stderr]     |
[INFO] [stderr] 171 | struct If {
[INFO] [stderr]     |        ^^
[INFO] [stderr] 
[INFO] [stderr] warning: struct is never constructed: `Op`
[INFO] [stderr]    --> src/structure.rs:177:8
[INFO] [stderr]     |
[INFO] [stderr] 177 | struct Op {
[INFO] [stderr]     |        ^^
[INFO] [stderr] 
[INFO] [stderr] warning: enum is never used: `Void`
[INFO] [stderr]    --> src/structure.rs:183:6
[INFO] [stderr]     |
[INFO] [stderr] 183 | enum Void {}
[INFO] [stderr]     |      ^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: function is never used: `test_enum_void`
[INFO] [stderr]    --> src/structure.rs:185:4
[INFO] [stderr]     |
[INFO] [stderr] 185 | fn test_enum_void(void: Void) -> i32 {
[INFO] [stderr]     |    ^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: function is never used: `array`
[INFO] [stderr]   --> src/types.rs:18:4
[INFO] [stderr]    |
[INFO] [stderr] 18 | fn array() {
[INFO] [stderr]    |    ^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: function is never used: `box_test`
[INFO] [stderr]   --> src/types.rs:36:15
[INFO] [stderr]    |
[INFO] [stderr] 36 | pub(super) fn box_test() {
[INFO] [stderr]    |               ^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: function is never used: `foo`
[INFO] [stderr]   --> src/types.rs:40:4
[INFO] [stderr]    |
[INFO] [stderr] 40 | fn foo() {
[INFO] [stderr]    |    ^^^
[INFO] [stderr] 
[INFO] [stderr] warning: function is never used: `bar`
[INFO] [stderr]   --> src/types.rs:46:4
[INFO] [stderr]    |
[INFO] [stderr] 46 | fn bar(b: &i32) {}
[INFO] [stderr]    |    ^^^
[INFO] [stderr] 
[INFO] [stderr] warning: function is never used: `test_vec`
[INFO] [stderr]   --> src/types.rs:48:15
[INFO] [stderr]    |
[INFO] [stderr] 48 | pub(super) fn test_vec() {
[INFO] [stderr]    |               ^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: function is never used: `test_ranges`
[INFO] [stderr]   --> src/types.rs:98:15
[INFO] [stderr]    |
[INFO] [stderr] 98 | pub(super) fn test_ranges() {
[INFO] [stderr]    |               ^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: function is never used: `test_loop`
[INFO] [stderr]    --> src/types.rs:110:15
[INFO] [stderr]     |
[INFO] [stderr] 110 | pub(super) fn test_loop() {
[INFO] [stderr]     |               ^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: function is never used: `test_loop_2`
[INFO] [stderr]    --> src/types.rs:130:15
[INFO] [stderr]     |
[INFO] [stderr] 130 | pub(super) fn test_loop_2() {
[INFO] [stderr]     |               ^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: function is never used: `test_loop_3`
[INFO] [stderr]    --> src/types.rs:142:15
[INFO] [stderr]     |
[INFO] [stderr] 142 | pub(super) fn test_loop_3() {
[INFO] [stderr]     |               ^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: function is never used: `test_expression`
[INFO] [stderr]    --> src/types.rs:153:15
[INFO] [stderr]     |
[INFO] [stderr] 153 | pub(super) fn test_expression() -> i32 {
[INFO] [stderr]     |               ^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: function is never used: `test_fn_like_parameter`
[INFO] [stderr]    --> src/types.rs:177:15
[INFO] [stderr]     |
[INFO] [stderr] 177 | pub(super) fn test_fn_like_parameter() {
[INFO] [stderr]     |               ^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: function is never used: `fn_like_parameter`
[INFO] [stderr]    --> src/types.rs:189:4
[INFO] [stderr]     |
[INFO] [stderr] 189 | fn fn_like_parameter(func: fn(i32) -> i32, i: i32) -> i32 {
[INFO] [stderr]     |    ^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: function is never used: `block`
[INFO] [stderr]    --> src/types.rs:220:4
[INFO] [stderr]     |
[INFO] [stderr] 220 | fn block() {
[INFO] [stderr]     |    ^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: function is never used: `exclamation_mark_0`
[INFO] [stderr]    --> src/types.rs:227:4
[INFO] [stderr]     |
[INFO] [stderr] 227 | fn exclamation_mark_0() -> i32 {
[INFO] [stderr]     |    ^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: function is never used: `exclamation_mark_1`
[INFO] [stderr]    --> src/types.rs:232:4
[INFO] [stderr]     |
[INFO] [stderr] 232 | fn exclamation_mark_1() -> ! {
[INFO] [stderr]     |    ^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: function is never used: `exclamation_mark_2`
[INFO] [stderr]    --> src/types.rs:238:4
[INFO] [stderr]     |
[INFO] [stderr] 238 | fn exclamation_mark_2() -> ! {
[INFO] [stderr]     |    ^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: function is never used: `tuple_fn`
[INFO] [stderr]    --> src/types.rs:267:4
[INFO] [stderr]     |
[INFO] [stderr] 267 | fn tuple_fn(fun: &dyn Fn() -> (f64, f64)) -> (f64, f64) {
[INFO] [stderr]     |    ^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: function is never used: `print_slice`
[INFO] [stderr]    --> src/types.rs:284:4
[INFO] [stderr]     |
[INFO] [stderr] 284 | fn print_slice(xs: &[i32]) {
[INFO] [stderr]     |    ^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: crate `StudyOfRust` should have a snake case name
[INFO] [stderr]   |
[INFO] [stderr]   = note: `#[warn(non_snake_case)]` on by default
[INFO] [stderr]   = help: convert the identifier to snake case: `study_of_rust`
[INFO] [stderr] 
[INFO] [stderr] warning: `StudyOfRust` (bin "StudyOfRust" test) generated 65 warnings
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 0.03s
[INFO] [stderr]      Running unittests src/main.rs (/opt/rustwide/target/debug/deps/StudyOfRust-ca626dc749caa203)
[INFO] [stdout] 
[INFO] [stdout] running 0 tests
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 0 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out; finished in 0.00s
[INFO] [stdout] 
[INFO] running `Command { std: "docker" "inspect" "b758f58c9c8ec6664abbddb7667582c25daf9fabd0592875bdda243e3ed33d11", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "b758f58c9c8ec6664abbddb7667582c25daf9fabd0592875bdda243e3ed33d11", kill_on_drop: false }`
[INFO] [stdout] b758f58c9c8ec6664abbddb7667582c25daf9fabd0592875bdda243e3ed33d11