[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] b55ba1e41448c3170bc5e8968f1841e85d8daec8
[INFO] checking Buzov/StudyOfRust against try#a7a572ce3edd6d476191fbfe92c9c1986e009b34 for pr-87190-3
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FBuzov%2FStudyOfRust" "/workspace/builds/worker-14/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-14/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/Buzov/StudyOfRust on toolchain a7a572ce3edd6d476191fbfe92c9c1986e009b34
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+a7a572ce3edd6d476191fbfe92c9c1986e009b34" "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-14/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" "+a7a572ce3edd6d476191fbfe92c9c1986e009b34" "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-14/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-14/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@sha256:34b6a614d2c27851fe6cbf88fbd1137609cefab8b10d0615aaeb6fd47975d74e" "/opt/rustwide/cargo-home/bin/cargo" "+a7a572ce3edd6d476191fbfe92c9c1986e009b34" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 334d3d09973df2ff729c36d93adc911aa48f1d33c182c925963b07a17723611e
[INFO] running `Command { std: "docker" "start" "-a" "334d3d09973df2ff729c36d93adc911aa48f1d33c182c925963b07a17723611e", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "334d3d09973df2ff729c36d93adc911aa48f1d33c182c925963b07a17723611e", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "334d3d09973df2ff729c36d93adc911aa48f1d33c182c925963b07a17723611e", kill_on_drop: false }`
[INFO] [stdout] 334d3d09973df2ff729c36d93adc911aa48f1d33c182c925963b07a17723611e
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-14/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-14/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=forbid" "-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@sha256:34b6a614d2c27851fe6cbf88fbd1137609cefab8b10d0615aaeb6fd47975d74e" "/opt/rustwide/cargo-home/bin/cargo" "+a7a572ce3edd6d476191fbfe92c9c1986e009b34" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 86aea6f0f28e90b02ae80cbc0094d461227d2b409c08537cfa1426bbf4697cb2
[INFO] running `Command { std: "docker" "start" "-a" "86aea6f0f28e90b02ae80cbc0094d461227d2b409c08537cfa1426bbf4697cb2", kill_on_drop: false }`
[INFO] [stderr] Copying to /tmp/fixit
[INFO] [stderr] Running `cargo fix --edition`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]     Checking StudyOfRust v0.1.0 (/tmp/fixit)
[INFO] [stderr]    Migrating src/main.rs from 2018 edition to 2021
[INFO] [stderr] warning: failed to automatically apply fixes suggested by rustc to crate `StudyOfRust`
[INFO] [stderr] 
[INFO] [stderr] after fixes were automatically applied the compiler reported errors within these files:
[INFO] [stderr] 
[INFO] [stderr]   * src/structure.rs
[INFO] [stderr]   * src/types.rs
[INFO] [stderr] 
[INFO] [stderr] This likely indicates a bug in either rustc or cargo itself,
[INFO] [stderr] and we would appreciate a bug report! You're likely to see 
[INFO] [stderr] a number of compiler warnings after this message which cargo
[INFO] [stderr] attempted to fix but failed. If you could open an issue at
[INFO] [stderr] https://github.com/rust-lang/rust/issues
[INFO] [stderr] quoting the full output of this command we'd be very appreciative!
[INFO] [stderr] Note that you may be able to make some more progress in the near-term
[INFO] [stderr] fixing code with the `--broken-code` flag
[INFO] [stderr] 
[INFO] [stderr] The following errors were reported:
[INFO] [stderr] error[E0425]: cannot find value `x` in this scope
[INFO] [stderr]    --> src/structure.rs:189:5
[INFO] [stderr]     |
[INFO] [stderr] 189 |     x
[INFO] [stderr]     |     ^ help: a local variable with a similar name exists: `_x`
[INFO] [stderr] 
[INFO] [stderr] error[E0425]: cannot find value `x` in this scope
[INFO] [stderr]    --> src/types.rs:227:5
[INFO] [stderr]     |
[INFO] [stderr] 227 |     x
[INFO] [stderr]     |     ^ help: a local variable with a similar name exists: `_x`
[INFO] [stderr] 
[INFO] [stderr] error[E0425]: cannot find value `x` in this scope
[INFO] [stderr]    --> src/types.rs:233:5
[INFO] [stderr]     |
[INFO] [stderr] 233 |     x
[INFO] [stderr]     |     ^ help: a local variable with a similar name exists: `_x`
[INFO] [stderr] 
[INFO] [stderr] warning: unreachable expression
[INFO] [stderr]    --> src/structure.rs:189:5
[INFO] [stderr]     |
[INFO] [stderr] 187 |       let _x =  match void {
[INFO] [stderr]     |  _______________-
[INFO] [stderr] 188 | |     };
[INFO] [stderr]     | |_____- any code following this expression is unreachable
[INFO] [stderr] 189 |       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:227:5
[INFO] [stderr]     |
[INFO] [stderr] 226 |     let _x: i32 = exclamation_mark_1();
[INFO] [stderr]     |                   -------------------- any code following this expression is unreachable
[INFO] [stderr] 227 |     x
[INFO] [stderr]     |     ^ unreachable expression
[INFO] [stderr] 
[INFO] [stderr] warning: unreachable expression
[INFO] [stderr]    --> src/types.rs:233:5
[INFO] [stderr]     |
[INFO] [stderr] 232 |     let _x = exclamation_mark_2();
[INFO] [stderr]     |              -------------------- any code following this expression is unreachable
[INFO] [stderr] 233 |     x
[INFO] [stderr]     |     ^ unreachable expression
[INFO] [stderr] 
[INFO] [stderr] error: aborting due to 3 previous errors; 3 warnings emitted
[INFO] [stderr] 
[INFO] [stderr] For more information about this error, try `rustc --explain E0425`.
[INFO] [stderr] Original diagnostics will follow.
[INFO] [stderr] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]    --> src/types.rs:267:19
[INFO] [stdout]     |
[INFO] [stdout] 267 | fn tuple_fn(fun: &Fn() -> (f64,f64)) -> (f64,f64) {
[INFO] [stdout]     |                   ^^^^^^^^^^^^^^^^^ help: use `dyn`: `dyn Fn() -> (f64,f64)`
[INFO] [stdout]     |
[INFO] [stdout]     = note: `--force-warn bare-trait-objects` implied by `--force-warn rust-2021-compatibility`
[INFO] [stdout]     = warning: this is accepted in the current edition (Rust 2018) but is a hard error in Rust 2021!
[INFO] [stdout]     = note: for more information, see <https://doc.rust-lang.org/nightly/edition-guide/rust-2021/warnings-promoted-to-error.html>
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]    --> src/types.rs:267:19
[INFO] [stdout]     |
[INFO] [stdout] 267 | fn tuple_fn(fun: &Fn() -> (f64,f64)) -> (f64,f64) {
[INFO] [stdout]     |                   ^^^^^^^^^^^^^^^^^ help: use `dyn`: `dyn Fn() -> (f64,f64)`
[INFO] [stdout]     |
[INFO] [stdout]     = note: `--force-warn bare-trait-objects` implied by `--force-warn rust-2021-compatibility`
[INFO] [stdout]     = warning: this is accepted in the current edition (Rust 2018) but is a hard error in Rust 2021!
[INFO] [stdout]     = note: for more information, see <https://doc.rust-lang.org/nightly/edition-guide/rust-2021/warnings-promoted-to-error.html>
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unreachable expression
[INFO] [stdout]    --> src/structure.rs:189:5
[INFO] [stdout]     |
[INFO] [stdout] 187 |       let x =  match void {
[INFO] [stdout]     |  ______________-
[INFO] [stdout] 188 | |     };
[INFO] [stdout]     | |_____- any code following this expression is unreachable
[INFO] [stdout] 189 |       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/structure.rs:189:5
[INFO] [stdout]     |
[INFO] [stdout] 187 |       let x =  match void {
[INFO] [stdout]     |  ______________-
[INFO] [stdout] 188 | |     };
[INFO] [stdout]     | |_____- any code following this expression is unreachable
[INFO] [stdout] 189 |       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:227:5
[INFO] [stdout]     |
[INFO] [stdout] 226 |     let x: i32 = exclamation_mark_1();
[INFO] [stdout]     |                  -------------------- any code following this expression is unreachable
[INFO] [stdout] 227 |     x
[INFO] [stdout]     |     ^ unreachable expression
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unreachable expression
[INFO] [stdout]    --> src/types.rs:233:5
[INFO] [stdout]     |
[INFO] [stdout] 232 |     let x = exclamation_mark_2();
[INFO] [stdout]     |             -------------------- any code following this expression is unreachable
[INFO] [stdout] 233 |     x
[INFO] [stdout]     |     ^ unreachable expression
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `t`
[INFO] [stdout]   --> src/structure.rs:44:9
[INFO] [stdout]    |
[INFO] [stdout] 44 |     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: unreachable expression
[INFO] [stdout]    --> src/types.rs:227:5
[INFO] [stdout]     |
[INFO] [stdout] 226 |     let x: i32 = exclamation_mark_1();
[INFO] [stdout]     |                  -------------------- any code following this expression is unreachable
[INFO] [stdout] 227 |     x
[INFO] [stdout]     |     ^ unreachable expression
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unreachable expression
[INFO] [stdout]    --> src/types.rs:233:5
[INFO] [stdout]     |
[INFO] [stdout] 232 |     let x = exclamation_mark_2();
[INFO] [stdout]     |             -------------------- any code following this expression is unreachable
[INFO] [stdout] 233 |     x
[INFO] [stdout]     |     ^ unreachable expression
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `d1`
[INFO] [stdout]   --> src/structure.rs:52:9
[INFO] [stdout]    |
[INFO] [stdout] 52 |     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:56:9
[INFO] [stdout]    |
[INFO] [stdout] 56 |     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:128:14
[INFO] [stdout]     |
[INFO] [stdout] 128 |         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:187:9
[INFO] [stdout]     |
[INFO] [stdout] 187 |     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: `bottom_left`
[INFO] [stdout]   --> src/structure.rs:93:29
[INFO] [stdout]    |
[INFO] [stdout] 93 |             Shape::Square { bottom_left, top_right } => {
[INFO] [stdout]    |                             ^^^^^^^^^^^ help: try ignoring the field: `bottom_left: _`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `top_right`
[INFO] [stdout]   --> src/structure.rs:93:42
[INFO] [stdout]    |
[INFO] [stdout] 93 |             Shape::Square { bottom_left, 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:77:9
[INFO] [stdout]    |
[INFO] [stdout] 77 |     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:78:9
[INFO] [stdout]    |
[INFO] [stdout] 78 |     let x2: () = if true {  92; };
[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:165:9
[INFO] [stdout]     |
[INFO] [stdout] 165 |     let s = if x > 0 {
[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: ()  = { 1; };
[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:226:9
[INFO] [stdout]     |
[INFO] [stdout] 226 |     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:232:9
[INFO] [stdout]     |
[INFO] [stdout] 232 |     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: unused variable: `t`
[INFO] [stdout]   --> src/structure.rs:44:9
[INFO] [stdout]    |
[INFO] [stdout] 44 |     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:52:9
[INFO] [stdout]    |
[INFO] [stdout] 52 |     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:56:9
[INFO] [stdout]    |
[INFO] [stdout] 56 |     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:128:14
[INFO] [stdout]     |
[INFO] [stdout] 128 |         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:187:9
[INFO] [stdout]     |
[INFO] [stdout] 187 |     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: `bottom_left`
[INFO] [stdout]   --> src/structure.rs:93:29
[INFO] [stdout]    |
[INFO] [stdout] 93 |             Shape::Square { bottom_left, top_right } => {
[INFO] [stdout]    |                             ^^^^^^^^^^^ help: try ignoring the field: `bottom_left: _`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `top_right`
[INFO] [stdout]   --> src/structure.rs:93:42
[INFO] [stdout]    |
[INFO] [stdout] 93 |             Shape::Square { bottom_left, 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:77:9
[INFO] [stdout]    |
[INFO] [stdout] 77 |     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:78:9
[INFO] [stdout]    |
[INFO] [stdout] 78 |     let x2: () = if true {  92; };
[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:165:9
[INFO] [stdout]     |
[INFO] [stdout] 165 |     let s = if x > 0 {
[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: ()  = { 1; };
[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:226:9
[INFO] [stdout]     |
[INFO] [stdout] 226 |     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:232:9
[INFO] [stdout]     |
[INFO] [stdout] 232 |     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: 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:17:8
[INFO] [stdout]    |
[INFO] [stdout] 17 |     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:31:8
[INFO] [stdout]    |
[INFO] [stdout] 31 | struct Kilometers;
[INFO] [stdout]    |        ^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct is never constructed: `Miles`
[INFO] [stdout]   --> src/structure.rs:32:8
[INFO] [stdout]    |
[INFO] [stdout] 32 | struct Miles;
[INFO] [stdout]    |        ^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct is never constructed: `Distance`
[INFO] [stdout]   --> src/structure.rs:34:8
[INFO] [stdout]    |
[INFO] [stdout] 34 | struct Distance<M> {
[INFO] [stdout]    |        ^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `test_types_struct`
[INFO] [stdout]   --> src/structure.rs:51:4
[INFO] [stdout]    |
[INFO] [stdout] 51 | fn test_types_struct() {
[INFO] [stdout]    |    ^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: enum is never used: `Shape`
[INFO] [stdout]   --> src/structure.rs:73:6
[INFO] [stdout]    |
[INFO] [stdout] 73 | enum Shape {
[INFO] [stdout]    |      ^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `circle`
[INFO] [stdout]   --> src/structure.rs:85:8
[INFO] [stdout]    |
[INFO] [stdout] 85 |     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:88:8
[INFO] [stdout]    |
[INFO] [stdout] 88 |     fn area(&self) -> f64 {
[INFO] [stdout]    |        ^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: enum is never used: `Expr`
[INFO] [stdout]    --> src/structure.rs:100:6
[INFO] [stdout]     |
[INFO] [stdout] 100 | enum Expr {
[INFO] [stdout]     |      ^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `binary_search`
[INFO] [stdout]    --> src/structure.rs:113:4
[INFO] [stdout]     |
[INFO] [stdout] 113 | 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:126:4
[INFO] [stdout]     |
[INFO] [stdout] 126 | fn foo2(xs: &[i32]) {
[INFO] [stdout]     |    ^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: enum is never used: `Expr1`
[INFO] [stdout]    --> src/structure.rs:148:6
[INFO] [stdout]     |
[INFO] [stdout] 148 | enum Expr1 {
[INFO] [stdout]     |      ^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: enum is never used: `Expr2`
[INFO] [stdout]    --> src/structure.rs:161:6
[INFO] [stdout]     |
[INFO] [stdout] 161 | enum Expr2 {
[INFO] [stdout]     |      ^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct is never constructed: `BinOp`
[INFO] [stdout]    --> src/structure.rs:166:8
[INFO] [stdout]     |
[INFO] [stdout] 166 | struct BinOp {
[INFO] [stdout]     |        ^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct is never constructed: `If`
[INFO] [stdout]    --> src/structure.rs:172:8
[INFO] [stdout]     |
[INFO] [stdout] 172 | struct If {
[INFO] [stdout]     |        ^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct is never constructed: `Op`
[INFO] [stdout]    --> src/structure.rs:178:8
[INFO] [stdout]     |
[INFO] [stdout] 178 | struct Op {
[INFO] [stdout]     |        ^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: enum is never used: `Void`
[INFO] [stdout]    --> src/structure.rs:184:6
[INFO] [stdout]     |
[INFO] [stdout] 184 | enum Void {}
[INFO] [stdout]     |      ^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `test_enum_void`
[INFO] [stdout]    --> src/structure.rs:186:4
[INFO] [stdout]     |
[INFO] [stdout] 186 | 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:36:14
[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:49:14
[INFO] [stdout]    |
[INFO] [stdout] 49 | 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:98:14
[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:111:14
[INFO] [stdout]     |
[INFO] [stdout] 111 | 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:132:14
[INFO] [stdout]     |
[INFO] [stdout] 132 | 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:144:14
[INFO] [stdout]     |
[INFO] [stdout] 144 | 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:155:14
[INFO] [stdout]     |
[INFO] [stdout] 155 | 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:179:14
[INFO] [stdout]     |
[INFO] [stdout] 179 | 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:225:4
[INFO] [stdout]     |
[INFO] [stdout] 225 | fn exclamation_mark_0() -> i32 {
[INFO] [stdout]     |    ^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `dist`
[INFO] [stdout]   --> src/structure.rs:17:8
[INFO] [stdout]    |
[INFO] [stdout] 17 |     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: function is never used: `exclamation_mark_1`
[INFO] [stdout]    --> src/types.rs:230:4
[INFO] [stdout]     |
[INFO] [stdout] 230 | 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:236:4
[INFO] [stdout]     |
[INFO] [stdout] 236 | 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: &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: struct is never constructed: `Kilometers`
[INFO] [stdout]   --> src/structure.rs:31:8
[INFO] [stdout]    |
[INFO] [stdout] 31 | struct Kilometers;
[INFO] [stdout]    |        ^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct is never constructed: `Miles`
[INFO] [stdout]   --> src/structure.rs:32:8
[INFO] [stdout]    |
[INFO] [stdout] 32 | struct Miles;
[INFO] [stdout]    |        ^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct is never constructed: `Distance`
[INFO] [stdout]   --> src/structure.rs:34:8
[INFO] [stdout]    |
[INFO] [stdout] 34 | struct Distance<M> {
[INFO] [stdout]    |        ^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `test_types_struct`
[INFO] [stdout]   --> src/structure.rs:51:4
[INFO] [stdout]    |
[INFO] [stdout] 51 | fn test_types_struct() {
[INFO] [stdout]    |    ^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: enum is never used: `Shape`
[INFO] [stdout]   --> src/structure.rs:73:6
[INFO] [stdout]    |
[INFO] [stdout] 73 | enum Shape {
[INFO] [stdout]    |      ^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `circle`
[INFO] [stdout]   --> src/structure.rs:85:8
[INFO] [stdout]    |
[INFO] [stdout] 85 |     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:88:8
[INFO] [stdout]    |
[INFO] [stdout] 88 |     fn area(&self) -> f64 {
[INFO] [stdout]    |        ^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: enum is never used: `Expr`
[INFO] [stdout]    --> src/structure.rs:100:6
[INFO] [stdout]     |
[INFO] [stdout] 100 | enum Expr {
[INFO] [stdout]     |      ^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `binary_search`
[INFO] [stdout]    --> src/structure.rs:113:4
[INFO] [stdout]     |
[INFO] [stdout] 113 | 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:126:4
[INFO] [stdout]     |
[INFO] [stdout] 126 | fn foo2(xs: &[i32]) {
[INFO] [stdout]     |    ^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: enum is never used: `Expr1`
[INFO] [stdout]    --> src/structure.rs:148:6
[INFO] [stdout]     |
[INFO] [stdout] 148 | enum Expr1 {
[INFO] [stdout]     |      ^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: enum is never used: `Expr2`
[INFO] [stdout]    --> src/structure.rs:161:6
[INFO] [stdout]     |
[INFO] [stdout] 161 | enum Expr2 {
[INFO] [stdout]     |      ^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct is never constructed: `BinOp`
[INFO] [stdout]    --> src/structure.rs:166:8
[INFO] [stdout]     |
[INFO] [stdout] 166 | struct BinOp {
[INFO] [stdout]     |        ^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct is never constructed: `If`
[INFO] [stdout]    --> src/structure.rs:172:8
[INFO] [stdout]     |
[INFO] [stdout] 172 | struct If {
[INFO] [stdout]     |        ^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct is never constructed: `Op`
[INFO] [stdout]    --> src/structure.rs:178:8
[INFO] [stdout]     |
[INFO] [stdout] 178 | struct Op {
[INFO] [stdout]     |        ^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: enum is never used: `Void`
[INFO] [stdout]    --> src/structure.rs:184:6
[INFO] [stdout]     |
[INFO] [stdout] 184 | enum Void {}
[INFO] [stdout]     |      ^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `test_enum_void`
[INFO] [stdout]    --> src/structure.rs:186:4
[INFO] [stdout]     |
[INFO] [stdout] 186 | 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:36:14
[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:49:14
[INFO] [stdout]    |
[INFO] [stdout] 49 | 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:98:14
[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:111:14
[INFO] [stdout]     |
[INFO] [stdout] 111 | 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:132:14
[INFO] [stdout]     |
[INFO] [stdout] 132 | 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:144:14
[INFO] [stdout]     |
[INFO] [stdout] 144 | 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:155:14
[INFO] [stdout]     |
[INFO] [stdout] 155 | 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:179:14
[INFO] [stdout]     |
[INFO] [stdout] 179 | 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:225:4
[INFO] [stdout]     |
[INFO] [stdout] 225 | 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:230:4
[INFO] [stdout]     |
[INFO] [stdout] 230 | 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:236:4
[INFO] [stdout]     |
[INFO] [stdout] 236 | 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: &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: 67 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 67 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 7.75s
[INFO] [stderr] Running `cargo check` to verify 2021
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]     Checking StudyOfRust v0.1.0 (/tmp/fixit)
[INFO] [stdout] error[E0782]: trait objects must include the `dyn` keyword
[INFO] [stdout]    --> src/types.rs:267:19
[INFO] [stdout]     |
[INFO] [stdout] 267 | fn tuple_fn(fun: &Fn() -> (f64,f64)) -> (f64,f64) {
[INFO] [stdout]     |                   ^^^^^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout] help: add `dyn` keyword before this trait
[INFO] [stdout]     |
[INFO] [stdout] 267 | fn tuple_fn(fun: &dyn Fn() -> (f64,f64)) -> (f64,f64) {
[INFO] [stdout]     |                   +++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0782]: trait objects must include the `dyn` keyword
[INFO] [stdout]    --> src/types.rs:267:19
[INFO] [stdout]     |
[INFO] [stdout] 267 | fn tuple_fn(fun: &Fn() -> (f64,f64)) -> (f64,f64) {
[INFO] [stdout]     |                   ^^^^^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout] help: add `dyn` keyword before this trait
[INFO] [stdout]     |
[INFO] [stdout] 267 | fn tuple_fn(fun: &dyn Fn() -> (f64,f64)) -> (f64,f64) {
[INFO] [stdout]     |                   +++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unreachable expression
[INFO] [stdout]    --> src/structure.rs:189:5
[INFO] [stdout]     |
[INFO] [stdout] 187 |       let x =  match void {
[INFO] [stdout]     |  ______________-
[INFO] [stdout] 188 | |     };
[INFO] [stdout]     | |_____- any code following this expression is unreachable
[INFO] [stdout] 189 |       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/structure.rs:189:5
[INFO] [stdout]     |
[INFO] [stdout] 187 |       let x =  match void {
[INFO] [stdout]     |  ______________-
[INFO] [stdout] 188 | |     };
[INFO] [stdout]     | |_____- any code following this expression is unreachable
[INFO] [stdout] 189 |       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:227:5
[INFO] [stdout]     |
[INFO] [stdout] 226 |     let x: i32 = exclamation_mark_1();
[INFO] [stdout]     |                  -------------------- any code following this expression is unreachable
[INFO] [stdout] 227 |     x
[INFO] [stdout]     |     ^ unreachable expression
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unreachable expression
[INFO] [stdout]    --> src/types.rs:233:5
[INFO] [stdout]     |
[INFO] [stdout] 232 |     let x = exclamation_mark_2();
[INFO] [stdout]     |             -------------------- any code following this expression is unreachable
[INFO] [stdout] 233 |     x
[INFO] [stdout]     |     ^ unreachable expression
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: aborting due to previous error; 3 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] For more information about this error, try `rustc --explain E0782`.
[INFO] [stdout] 
[INFO] [stderr] error: could not compile `StudyOfRust` due to 2 previous errors; 3 warnings emitted
[INFO] [stderr] warning: build failed, waiting for other jobs to finish...
[INFO] [stdout] warning: unreachable expression
[INFO] [stdout]    --> src/types.rs:227:5
[INFO] [stdout]     |
[INFO] [stdout] 226 |     let x: i32 = exclamation_mark_1();
[INFO] [stdout]     |                  -------------------- any code following this expression is unreachable
[INFO] [stdout] 227 |     x
[INFO] [stdout]     |     ^ unreachable expression
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unreachable expression
[INFO] [stdout]    --> src/types.rs:233:5
[INFO] [stdout]     |
[INFO] [stdout] 232 |     let x = exclamation_mark_2();
[INFO] [stdout]     |             -------------------- any code following this expression is unreachable
[INFO] [stdout] 233 |     x
[INFO] [stdout]     |     ^ unreachable expression
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: aborting due to previous error; 3 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] For more information about this error, try `rustc --explain E0782`.
[INFO] [stdout] 
[INFO] [stderr] error: build failed
[INFO] [stderr] error: failed to check after updating to 2021
[INFO] [stderr] 
[INFO] [stderr] Caused by:
[INFO] [stderr]   process didn't exit successfully: `cargo check --frozen --all --all-targets --message-format=json` (exit status: 101)
[INFO] running `Command { std: "docker" "inspect" "86aea6f0f28e90b02ae80cbc0094d461227d2b409c08537cfa1426bbf4697cb2", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "86aea6f0f28e90b02ae80cbc0094d461227d2b409c08537cfa1426bbf4697cb2", kill_on_drop: false }`
[INFO] [stdout] 86aea6f0f28e90b02ae80cbc0094d461227d2b409c08537cfa1426bbf4697cb2