[INFO] cloning repository https://github.com/szaboopeeter/rust-fundamentals
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/szaboopeeter/rust-fundamentals" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fszaboopeeter%2Frust-fundamentals", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fszaboopeeter%2Frust-fundamentals'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 4781ac54ab375c52b13555ef12aec4df2141d19c
[INFO] checking szaboopeeter/rust-fundamentals against master#1280928a99ad3ef2c5735b42dc8852456ae3b974 for pr-120798
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fszaboopeeter%2Frust-fundamentals" "/workspace/builds/worker-6-tc1/source", kill_on_drop: false }`
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[INFO] validating manifest of git repo https://github.com/szaboopeeter/rust-fundamentals on toolchain 1280928a99ad3ef2c5735b42dc8852456ae3b974
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+1280928a99ad3ef2c5735b42dc8852456ae3b974" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/szaboopeeter/rust-fundamentals
[INFO] finished tweaking git repo https://github.com/szaboopeeter/rust-fundamentals
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[INFO] crate git repo https://github.com/szaboopeeter/rust-fundamentals already has a lockfile, it will not be regenerated
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+1280928a99ad3ef2c5735b42dc8852456ae3b974" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[ERROR] error running command: no output for 300 seconds
[ERROR] this task or one of its parent failed!
[ERROR] no output for 300 seconds
[ERROR] note: run with `RUST_BACKTRACE=1` to display a backtrace.
[INFO] checking szaboopeeter/rust-fundamentals against try#9b9e20bc79549d80ab413f49d990713851172cc1 for pr-120798
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fszaboopeeter%2Frust-fundamentals" "/workspace/builds/worker-6-tc2/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-6-tc2/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/szaboopeeter/rust-fundamentals on toolchain 9b9e20bc79549d80ab413f49d990713851172cc1
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+9b9e20bc79549d80ab413f49d990713851172cc1" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/szaboopeeter/rust-fundamentals
[INFO] finished tweaking git repo https://github.com/szaboopeeter/rust-fundamentals
[INFO] tweaked toml for git repo https://github.com/szaboopeeter/rust-fundamentals written to /workspace/builds/worker-6-tc2/source/Cargo.toml
[INFO] crate git repo https://github.com/szaboopeeter/rust-fundamentals already has a lockfile, it will not be regenerated
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+9b9e20bc79549d80ab413f49d990713851172cc1" "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-6-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-tc2/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@sha256:2788e3201cd34a07e3172128adcd8b3090168a8e3bcc40d7c032b9dda1df7d1c" "/opt/rustwide/cargo-home/bin/cargo" "+9b9e20bc79549d80ab413f49d990713851172cc1" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] c805683d13b6aa96ebccb5438b0974f086663a22b845ba6eda236f32e43aaf3c
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[INFO] running `Command { std: "docker" "inspect" "c805683d13b6aa96ebccb5438b0974f086663a22b845ba6eda236f32e43aaf3c", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "c805683d13b6aa96ebccb5438b0974f086663a22b845ba6eda236f32e43aaf3c", kill_on_drop: false }`
[INFO] [stdout] c805683d13b6aa96ebccb5438b0974f086663a22b845ba6eda236f32e43aaf3c
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-tc2/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" "RUSTDOCFLAGS=--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@sha256:2788e3201cd34a07e3172128adcd8b3090168a8e3bcc40d7c032b9dda1df7d1c" "/opt/rustwide/cargo-home/bin/cargo" "+9b9e20bc79549d80ab413f49d990713851172cc1" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 09a58b3c3d143d9873ba8a219923d674f3eec5ea6abaa172bf33f793a46fca92
[INFO] running `Command { std: "docker" "start" "-a" "09a58b3c3d143d9873ba8a219923d674f3eec5ea6abaa172bf33f793a46fca92", kill_on_drop: false }`
[INFO] [stderr]    Compiling libc v0.2.67
[INFO] [stderr]     Checking rand v0.4.6
[INFO] [stderr]     Checking rand v0.3.23
[INFO] [stderr]     Checking rust-fundamentals v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: `...` range patterns are deprecated
[INFO] [stdout]   --> src/control.rs:69:10
[INFO] [stdout]    |
[INFO] [stdout] 69 |         1...999 => "unknown", // [1 to 999] both inclusive
[INFO] [stdout]    |          ^^^ help: use `..=` for an inclusive range
[INFO] [stdout]    |
[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]    = note: `#[warn(ellipsis_inclusive_range_patterns)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: `...` range patterns are deprecated
[INFO] [stdout]   --> src/control.rs:69:10
[INFO] [stdout]    |
[INFO] [stdout] 69 |         1...999 => "unknown", // [1 to 999] both inclusive
[INFO] [stdout]    |          ^^^ help: use `..=` for an inclusive range
[INFO] [stdout]    |
[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]    = note: `#[warn(ellipsis_inclusive_range_patterns)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `myLine`
[INFO] [stdout]   --> src/datastructures.rs:27:9
[INFO] [stdout]    |
[INFO] [stdout] 27 |     let myLine = Line { start: p, end: p2 };
[INFO] [stdout]    |         ^^^^^^ help: if this is intentional, prefix it with an underscore: `_myLine`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_variables)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unreachable pattern
[INFO] [stdout]   --> src/datastructures.rs:64:9
[INFO] [stdout]    |
[INFO] [stdout] 64 |         Color::CmykColor { black: 255, .. } => println!("black"), // technically same as above
[INFO] [stdout]    |         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unreachable_patterns)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `last_elem`
[INFO] [stdout]    --> src/datastructures.rs:146:9
[INFO] [stdout]     |
[INFO] [stdout] 146 |     let last_elem = a.pop();
[INFO] [stdout]     |         ^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_last_elem`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: value assigned to `x` is never read
[INFO] [stdout]   --> src/functions.rs:72:41
[INFO] [stdout]    |
[INFO] [stdout] 72 |     let plus_three_local = |mut x: i32| x += 3;
[INFO] [stdout]    |                                         ^
[INFO] [stdout]    |
[INFO] [stdout]    = help: maybe it is overwritten before being read?
[INFO] [stdout]    = note: `#[warn(unused_assignments)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `x`
[INFO] [stdout]   --> src/functions.rs:72:33
[INFO] [stdout]    |
[INFO] [stdout] 72 |     let plus_three_local = |mut x: i32| x += 3;
[INFO] [stdout]    |                                 ^ help: if this is intentional, prefix it with an underscore: `_x`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `u2`
[INFO] [stdout]   --> src/lifetime.rs:10:9
[INFO] [stdout]    |
[INFO] [stdout] 10 |     let u2 = u;
[INFO] [stdout]    |         ^^ help: if this is intentional, prefix it with an underscore: `_u2`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `v4`
[INFO] [stdout]   --> src/lifetime.rs:19:9
[INFO] [stdout]    |
[INFO] [stdout] 19 |     let v4 = print_vector(v3);
[INFO] [stdout]    |         ^^ help: if this is intentional, prefix it with an underscore: `_v4`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `v`
[INFO] [stdout]  --> src/lifetime.rs:5:16
[INFO] [stdout]   |
[INFO] [stdout] 5 |     let foo = |v: Vec<i32>| ();
[INFO] [stdout]   |                ^ help: if this is intentional, prefix it with an underscore: `_v`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `u`
[INFO] [stdout]   --> src/moreds.rs:51:9
[INFO] [stdout]    |
[INFO] [stdout] 51 |     let u: &str = &letters;
[INFO] [stdout]    |         ^ help: if this is intentional, prefix it with an underscore: `_u`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `z`
[INFO] [stdout]   --> src/moreds.rs:55:9
[INFO] [stdout]    |
[INFO] [stdout] 55 |     let z = letters + "abc";
[INFO] [stdout]    |         ^ help: if this is intentional, prefix it with an underscore: `_z`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `z`
[INFO] [stdout]   --> src/moreds.rs:87:9
[INFO] [stdout]    |
[INFO] [stdout] 87 |         z @ 9..=14 => "lots of", // z becomes a reference to the case // `..=` is the new version of `...`
[INFO] [stdout]    |         ^ help: if this is intentional, prefix it with an underscore: `_z`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `b`
[INFO] [stdout]    --> src/moreds.rs:105:9
[INFO] [stdout]     |
[INFO] [stdout] 105 |     let b = Point { x: "hel", y: "lo" };
[INFO] [stdout]     |         ^ help: if this is intentional, prefix it with an underscore: `_b`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `c`
[INFO] [stdout]    --> src/moreds.rs:107:9
[INFO] [stdout]     |
[INFO] [stdout] 107 |     let c = Line { start: a, end: Point { x: 1, y: 2 } };
[INFO] [stdout]     |         ^ help: if this is intentional, prefix it with an underscore: `_c`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]   --> src/main.rs:56:9
[INFO] [stdout]    |
[INFO] [stdout] 56 |     let mut a = 2 + 3 * 4; // -= += *= /= %=
[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: unused variable: `a`
[INFO] [stdout]   --> src/main.rs:72:9
[INFO] [stdout]    |
[INFO] [stdout] 72 |     let a = 123;
[INFO] [stdout]    |         ^ help: if this is intentional, prefix it with an underscore: `_a`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `b`
[INFO] [stdout]   --> src/main.rs:76:13
[INFO] [stdout]    |
[INFO] [stdout] 76 |         let b = 456;
[INFO] [stdout]    |             ^ help: if this is intentional, prefix it with an underscore: `_b`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `sum` is never used
[INFO] [stdout]   --> src/main.rs:30:4
[INFO] [stdout]    |
[INFO] [stdout] 30 | fn sum(a: i32, b: i32) -> i32 {
[INFO] [stdout]    |    ^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: constant `MEANING_OF_LIFE` is never used
[INFO] [stdout]   --> src/main.rs:42:7
[INFO] [stdout]    |
[INFO] [stdout] 42 | const MEANING_OF_LIFE: u8 = 42; // no fixed address, always inlined
[INFO] [stdout]    |       ^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: static `Z` is never used
[INFO] [stdout]   --> src/main.rs:43:8
[INFO] [stdout]    |
[INFO] [stdout] 43 | static Z: i32 = 123;
[INFO] [stdout]    |        ^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: static `Z_MUT` is never used
[INFO] [stdout]   --> src/main.rs:44:12
[INFO] [stdout]    |
[INFO] [stdout] 44 | static mut Z_MUT: i32 = 456;
[INFO] [stdout]    |            ^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `constants` is never used
[INFO] [stdout]   --> src/main.rs:45:4
[INFO] [stdout]    |
[INFO] [stdout] 45 | fn constants() {
[INFO] [stdout]    |    ^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `operators` is never used
[INFO] [stdout]   --> src/main.rs:55:4
[INFO] [stdout]    |
[INFO] [stdout] 55 | fn operators() {
[INFO] [stdout]    |    ^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `scopes` is never used
[INFO] [stdout]   --> src/main.rs:71:4
[INFO] [stdout]    |
[INFO] [stdout] 71 | fn scopes() {
[INFO] [stdout]    |    ^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `numbers` is never used
[INFO] [stdout]   --> src/main.rs:85:4
[INFO] [stdout]    |
[INFO] [stdout] 85 | fn numbers() {
[INFO] [stdout]    |    ^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `control` is never used
[INFO] [stdout]  --> src/control.rs:1:8
[INFO] [stdout]   |
[INFO] [stdout] 1 | pub fn control() {
[INFO] [stdout]   |        ^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `if_statement` is never used
[INFO] [stdout]  --> src/control.rs:8:4
[INFO] [stdout]   |
[INFO] [stdout] 8 | fn if_statement() {
[INFO] [stdout]   |    ^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `while_loop` is never used
[INFO] [stdout]   --> src/control.rs:22:4
[INFO] [stdout]    |
[INFO] [stdout] 22 | fn while_loop() {
[INFO] [stdout]    |    ^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `for_loop` is never used
[INFO] [stdout]   --> src/control.rs:46:4
[INFO] [stdout]    |
[INFO] [stdout] 46 | fn for_loop() {
[INFO] [stdout]    |    ^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `match_statement` is never used
[INFO] [stdout]   --> src/control.rs:63:4
[INFO] [stdout]    |
[INFO] [stdout] 63 | fn match_statement() {
[INFO] [stdout]    |    ^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `ds` is never used
[INFO] [stdout]  --> src/datastructures.rs:3:8
[INFO] [stdout]   |
[INFO] [stdout] 3 | pub fn ds() {
[INFO] [stdout]   |        ^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct `Point` is never constructed
[INFO] [stdout]   --> src/datastructures.rs:11:8
[INFO] [stdout]    |
[INFO] [stdout] 11 | struct Point {
[INFO] [stdout]    |        ^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct `Line` is never constructed
[INFO] [stdout]   --> src/datastructures.rs:16:8
[INFO] [stdout]    |
[INFO] [stdout] 16 | struct Line {
[INFO] [stdout]    |        ^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `structs` is never used
[INFO] [stdout]   --> src/datastructures.rs:21:4
[INFO] [stdout]    |
[INFO] [stdout] 21 | fn structs() {
[INFO] [stdout]    |    ^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: enum `Color` is never used
[INFO] [stdout]   --> src/datastructures.rs:30:6
[INFO] [stdout]    |
[INFO] [stdout] 30 | enum Color {
[INFO] [stdout]    |      ^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `enums` is never used
[INFO] [stdout]   --> src/datastructures.rs:43:4
[INFO] [stdout]    |
[INFO] [stdout] 43 | fn enums() {
[INFO] [stdout]    |    ^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `option_of_t` is never used
[INFO] [stdout]   --> src/datastructures.rs:69:4
[INFO] [stdout]    |
[INFO] [stdout] 69 | fn option_of_t() {
[INFO] [stdout]    |    ^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `arrays` is never used
[INFO] [stdout]   --> src/datastructures.rs:93:4
[INFO] [stdout]    |
[INFO] [stdout] 93 | fn arrays() {
[INFO] [stdout]    |    ^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `vectors` is never used
[INFO] [stdout]    --> src/datastructures.rs:124:4
[INFO] [stdout]     |
[INFO] [stdout] 124 | fn vectors() {
[INFO] [stdout]     |    ^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `functions` is never used
[INFO] [stdout]  --> src/functions.rs:1:8
[INFO] [stdout]   |
[INFO] [stdout] 1 | pub fn functions() {
[INFO] [stdout]   |        ^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `increase` is never used
[INFO] [stdout]   --> src/functions.rs:22:4
[INFO] [stdout]    |
[INFO] [stdout] 22 | fn increase(x: &mut i32) {
[INFO] [stdout]    |    ^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `product` is never used
[INFO] [stdout]   --> src/functions.rs:26:4
[INFO] [stdout]    |
[INFO] [stdout] 26 | fn product(x: i32, y: i32) -> i32 {
[INFO] [stdout]    |    ^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `print_value` is never used
[INFO] [stdout]   --> src/functions.rs:31:4
[INFO] [stdout]    |
[INFO] [stdout] 31 | fn print_value(x: i32) {
[INFO] [stdout]    |    ^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct `Point` is never constructed
[INFO] [stdout]   --> src/functions.rs:35:8
[INFO] [stdout]    |
[INFO] [stdout] 35 | struct Point {
[INFO] [stdout]    |        ^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct `Line` is never constructed
[INFO] [stdout]   --> src/functions.rs:40:8
[INFO] [stdout]    |
[INFO] [stdout] 40 | struct Line {
[INFO] [stdout]    |        ^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: method `len` is never used
[INFO] [stdout]   --> src/functions.rs:46:8
[INFO] [stdout]    |
[INFO] [stdout] 45 | impl Line {
[INFO] [stdout]    | --------- method in this implementation
[INFO] [stdout] 46 |     fn len(&self) -> f64 {
[INFO] [stdout]    |        ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `say_hello` is never used
[INFO] [stdout]   --> src/functions.rs:54:4
[INFO] [stdout]    |
[INFO] [stdout] 54 | fn say_hello() {
[INFO] [stdout]    |    ^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `closures` is never used
[INFO] [stdout]   --> src/functions.rs:58:4
[INFO] [stdout]    |
[INFO] [stdout] 58 | fn closures() {
[INFO] [stdout]    |    ^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `higher_order` is never used
[INFO] [stdout]   --> src/functions.rs:83:4
[INFO] [stdout]    |
[INFO] [stdout] 83 | fn higher_order() {
[INFO] [stdout]    |    ^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `is_even` is never used
[INFO] [stdout]    --> src/functions.rs:105:4
[INFO] [stdout]     |
[INFO] [stdout] 105 | fn is_even(x: u32) -> bool {
[INFO] [stdout]     |    ^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `traits` is never used
[INFO] [stdout]    --> src/functions.rs:109:4
[INFO] [stdout]     |
[INFO] [stdout] 109 | fn traits() {
[INFO] [stdout]     |    ^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait `Summable` is never used
[INFO] [stdout]    --> src/functions.rs:119:7
[INFO] [stdout]     |
[INFO] [stdout] 119 | trait Summable<T> {
[INFO] [stdout]     |       ^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait `Animal` is never used
[INFO] [stdout]    --> src/functions.rs:133:7
[INFO] [stdout]     |
[INFO] [stdout] 133 | trait Animal {
[INFO] [stdout]     |       ^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct `Human` is never constructed
[INFO] [stdout]    --> src/functions.rs:141:8
[INFO] [stdout]     |
[INFO] [stdout] 141 | struct Human {
[INFO] [stdout]     |        ^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct `Cat` is never constructed
[INFO] [stdout]    --> src/functions.rs:158:8
[INFO] [stdout]     |
[INFO] [stdout] 158 | struct Cat {
[INFO] [stdout]     |        ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `ds` is never used
[INFO] [stdout]  --> src/moreds.rs:1:8
[INFO] [stdout]   |
[INFO] [stdout] 1 | pub fn ds() {
[INFO] [stdout]   |        ^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `slices` is never used
[INFO] [stdout]  --> src/moreds.rs:9:4
[INFO] [stdout]   |
[INFO] [stdout] 9 | fn slices() {
[INFO] [stdout]   |    ^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `sum` is never used
[INFO] [stdout]   --> src/moreds.rs:15:4
[INFO] [stdout]    |
[INFO] [stdout] 15 | fn sum(slice: &[i32]) -> i32 {
[INFO] [stdout]    |    ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `modify` is never used
[INFO] [stdout]   --> src/moreds.rs:22:4
[INFO] [stdout]    |
[INFO] [stdout] 22 | fn modify(slice: &mut [i32]) {
[INFO] [stdout]    |    ^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `strings` is never used
[INFO] [stdout]   --> src/moreds.rs:28:4
[INFO] [stdout]    |
[INFO] [stdout] 28 | fn strings() {
[INFO] [stdout]    |    ^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `tuples` is never used
[INFO] [stdout]   --> src/moreds.rs:62:4
[INFO] [stdout]    |
[INFO] [stdout] 62 | fn tuples() {
[INFO] [stdout]    |    ^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `sum_and_product` is never used
[INFO] [stdout]   --> src/moreds.rs:72:4
[INFO] [stdout]    |
[INFO] [stdout] 72 | fn sum_and_product(x: i32, y: i32) -> (i32, i32) {
[INFO] [stdout]    |    ^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `pattern_matching` is never used
[INFO] [stdout]   --> src/moreds.rs:76:4
[INFO] [stdout]    |
[INFO] [stdout] 76 | fn pattern_matching() {
[INFO] [stdout]    |    ^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `how_many` is never used
[INFO] [stdout]   --> src/moreds.rs:82:4
[INFO] [stdout]    |
[INFO] [stdout] 82 | fn how_many(x: i32) -> &'static str {
[INFO] [stdout]    |    ^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct `Point` is never constructed
[INFO] [stdout]   --> src/moreds.rs:93:8
[INFO] [stdout]    |
[INFO] [stdout] 93 | struct Point<T> {
[INFO] [stdout]    |        ^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct `Line` is never constructed
[INFO] [stdout]   --> src/moreds.rs:98:8
[INFO] [stdout]    |
[INFO] [stdout] 98 | struct Line<T> {
[INFO] [stdout]    |        ^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `generics` is never used
[INFO] [stdout]    --> src/moreds.rs:103:4
[INFO] [stdout]     |
[INFO] [stdout] 103 | fn generics() {
[INFO] [stdout]     |    ^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `myLine`
[INFO] [stdout]   --> src/datastructures.rs:27:9
[INFO] [stdout]    |
[INFO] [stdout] 27 |     let myLine = Line { start: p, end: p2 };
[INFO] [stdout]    |         ^^^^^^ help: if this is intentional, prefix it with an underscore: `_myLine`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_variables)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct `Point` is never constructed
[INFO] [stdout]  --> src/sh.rs:3:8
[INFO] [stdout]   |
[INFO] [stdout] 3 | struct Point {
[INFO] [stdout]   |        ^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unreachable pattern
[INFO] [stdout]   --> src/datastructures.rs:64:9
[INFO] [stdout]    |
[INFO] [stdout] 64 |         Color::CmykColor { black: 255, .. } => println!("black"), // technically same as above
[INFO] [stdout]    |         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unreachable_patterns)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `origin` is never used
[INFO] [stdout]  --> src/sh.rs:8:4
[INFO] [stdout]   |
[INFO] [stdout] 8 | fn origin() -> Point {
[INFO] [stdout]   |    ^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `stack_and_heap` is never used
[INFO] [stdout]   --> src/sh.rs:12:8
[INFO] [stdout]    |
[INFO] [stdout] 12 | pub fn stack_and_heap() {
[INFO] [stdout]    |        ^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable `myLine` should have a snake case name
[INFO] [stdout]   --> src/datastructures.rs:27:9
[INFO] [stdout]    |
[INFO] [stdout] 27 |     let myLine = Line { start: p, end: p2 };
[INFO] [stdout]    |         ^^^^^^ help: convert the identifier to snake case: `my_line`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(non_snake_case)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `last_elem`
[INFO] [stdout]    --> src/datastructures.rs:146:9
[INFO] [stdout]     |
[INFO] [stdout] 146 |     let last_elem = a.pop();
[INFO] [stdout]     |         ^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_last_elem`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: value assigned to `x` is never read
[INFO] [stdout]   --> src/functions.rs:72:41
[INFO] [stdout]    |
[INFO] [stdout] 72 |     let plus_three_local = |mut x: i32| x += 3;
[INFO] [stdout]    |                                         ^
[INFO] [stdout]    |
[INFO] [stdout]    = help: maybe it is overwritten before being read?
[INFO] [stdout]    = note: `#[warn(unused_assignments)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `x`
[INFO] [stdout]   --> src/functions.rs:72:33
[INFO] [stdout]    |
[INFO] [stdout] 72 |     let plus_three_local = |mut x: i32| x += 3;
[INFO] [stdout]    |                                 ^ help: if this is intentional, prefix it with an underscore: `_x`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 71 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `u2`
[INFO] [stdout]   --> src/lifetime.rs:10:9
[INFO] [stdout]    |
[INFO] [stdout] 10 |     let u2 = u;
[INFO] [stdout]    |         ^^ help: if this is intentional, prefix it with an underscore: `_u2`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `v4`
[INFO] [stdout]   --> src/lifetime.rs:19:9
[INFO] [stdout]    |
[INFO] [stdout] 19 |     let v4 = print_vector(v3);
[INFO] [stdout]    |         ^^ help: if this is intentional, prefix it with an underscore: `_v4`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `v`
[INFO] [stdout]  --> src/lifetime.rs:5:16
[INFO] [stdout]   |
[INFO] [stdout] 5 |     let foo = |v: Vec<i32>| ();
[INFO] [stdout]   |                ^ help: if this is intentional, prefix it with an underscore: `_v`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `u`
[INFO] [stdout]   --> src/moreds.rs:51:9
[INFO] [stdout]    |
[INFO] [stdout] 51 |     let u: &str = &letters;
[INFO] [stdout]    |         ^ help: if this is intentional, prefix it with an underscore: `_u`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `z`
[INFO] [stdout]   --> src/moreds.rs:55:9
[INFO] [stdout]    |
[INFO] [stdout] 55 |     let z = letters + "abc";
[INFO] [stdout]    |         ^ help: if this is intentional, prefix it with an underscore: `_z`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `z`
[INFO] [stdout]   --> src/moreds.rs:87:9
[INFO] [stdout]    |
[INFO] [stdout] 87 |         z @ 9..=14 => "lots of", // z becomes a reference to the case // `..=` is the new version of `...`
[INFO] [stdout]    |         ^ help: if this is intentional, prefix it with an underscore: `_z`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `b`
[INFO] [stdout]    --> src/moreds.rs:105:9
[INFO] [stdout]     |
[INFO] [stdout] 105 |     let b = Point { x: "hel", y: "lo" };
[INFO] [stdout]     |         ^ help: if this is intentional, prefix it with an underscore: `_b`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `c`
[INFO] [stdout]    --> src/moreds.rs:107:9
[INFO] [stdout]     |
[INFO] [stdout] 107 |     let c = Line { start: a, end: Point { x: 1, y: 2 } };
[INFO] [stdout]     |         ^ help: if this is intentional, prefix it with an underscore: `_c`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]   --> src/main.rs:56:9
[INFO] [stdout]    |
[INFO] [stdout] 56 |     let mut a = 2 + 3 * 4; // -= += *= /= %=
[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: unused variable: `a`
[INFO] [stdout]   --> src/main.rs:72:9
[INFO] [stdout]    |
[INFO] [stdout] 72 |     let a = 123;
[INFO] [stdout]    |         ^ help: if this is intentional, prefix it with an underscore: `_a`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `b`
[INFO] [stdout]   --> src/main.rs:76:13
[INFO] [stdout]    |
[INFO] [stdout] 76 |         let b = 456;
[INFO] [stdout]    |             ^ help: if this is intentional, prefix it with an underscore: `_b`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: constant `MEANING_OF_LIFE` is never used
[INFO] [stdout]   --> src/main.rs:42:7
[INFO] [stdout]    |
[INFO] [stdout] 42 | const MEANING_OF_LIFE: u8 = 42; // no fixed address, always inlined
[INFO] [stdout]    |       ^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: static `Z` is never used
[INFO] [stdout]   --> src/main.rs:43:8
[INFO] [stdout]    |
[INFO] [stdout] 43 | static Z: i32 = 123;
[INFO] [stdout]    |        ^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: static `Z_MUT` is never used
[INFO] [stdout]   --> src/main.rs:44:12
[INFO] [stdout]    |
[INFO] [stdout] 44 | static mut Z_MUT: i32 = 456;
[INFO] [stdout]    |            ^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `constants` is never used
[INFO] [stdout]   --> src/main.rs:45:4
[INFO] [stdout]    |
[INFO] [stdout] 45 | fn constants() {
[INFO] [stdout]    |    ^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `operators` is never used
[INFO] [stdout]   --> src/main.rs:55:4
[INFO] [stdout]    |
[INFO] [stdout] 55 | fn operators() {
[INFO] [stdout]    |    ^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `scopes` is never used
[INFO] [stdout]   --> src/main.rs:71:4
[INFO] [stdout]    |
[INFO] [stdout] 71 | fn scopes() {
[INFO] [stdout]    |    ^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `numbers` is never used
[INFO] [stdout]   --> src/main.rs:85:4
[INFO] [stdout]    |
[INFO] [stdout] 85 | fn numbers() {
[INFO] [stdout]    |    ^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `control` is never used
[INFO] [stdout]  --> src/control.rs:1:8
[INFO] [stdout]   |
[INFO] [stdout] 1 | pub fn control() {
[INFO] [stdout]   |        ^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `if_statement` is never used
[INFO] [stdout]  --> src/control.rs:8:4
[INFO] [stdout]   |
[INFO] [stdout] 8 | fn if_statement() {
[INFO] [stdout]   |    ^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `while_loop` is never used
[INFO] [stdout]   --> src/control.rs:22:4
[INFO] [stdout]    |
[INFO] [stdout] 22 | fn while_loop() {
[INFO] [stdout]    |    ^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `for_loop` is never used
[INFO] [stdout]   --> src/control.rs:46:4
[INFO] [stdout]    |
[INFO] [stdout] 46 | fn for_loop() {
[INFO] [stdout]    |    ^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `match_statement` is never used
[INFO] [stdout]   --> src/control.rs:63:4
[INFO] [stdout]    |
[INFO] [stdout] 63 | fn match_statement() {
[INFO] [stdout]    |    ^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `ds` is never used
[INFO] [stdout]  --> src/datastructures.rs:3:8
[INFO] [stdout]   |
[INFO] [stdout] 3 | pub fn ds() {
[INFO] [stdout]   |        ^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct `Point` is never constructed
[INFO] [stdout]   --> src/datastructures.rs:11:8
[INFO] [stdout]    |
[INFO] [stdout] 11 | struct Point {
[INFO] [stdout]    |        ^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct `Line` is never constructed
[INFO] [stdout]   --> src/datastructures.rs:16:8
[INFO] [stdout]    |
[INFO] [stdout] 16 | struct Line {
[INFO] [stdout]    |        ^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `structs` is never used
[INFO] [stdout]   --> src/datastructures.rs:21:4
[INFO] [stdout]    |
[INFO] [stdout] 21 | fn structs() {
[INFO] [stdout]    |    ^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: enum `Color` is never used
[INFO] [stdout]   --> src/datastructures.rs:30:6
[INFO] [stdout]    |
[INFO] [stdout] 30 | enum Color {
[INFO] [stdout]    |      ^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 1.89s
[INFO] [stdout] warning: function `enums` is never used
[INFO] [stdout]   --> src/datastructures.rs:43:4
[INFO] [stdout]    |
[INFO] [stdout] 43 | fn enums() {
[INFO] [stdout]    |    ^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `option_of_t` is never used
[INFO] [stdout]   --> src/datastructures.rs:69:4
[INFO] [stdout]    |
[INFO] [stdout] 69 | fn option_of_t() {
[INFO] [stdout]    |    ^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `arrays` is never used
[INFO] [stdout]   --> src/datastructures.rs:93:4
[INFO] [stdout]    |
[INFO] [stdout] 93 | fn arrays() {
[INFO] [stdout]    |    ^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `vectors` is never used
[INFO] [stdout]    --> src/datastructures.rs:124:4
[INFO] [stdout]     |
[INFO] [stdout] 124 | fn vectors() {
[INFO] [stdout]     |    ^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `functions` is never used
[INFO] [stdout]  --> src/functions.rs:1:8
[INFO] [stdout]   |
[INFO] [stdout] 1 | pub fn functions() {
[INFO] [stdout]   |        ^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `increase` is never used
[INFO] [stdout]   --> src/functions.rs:22:4
[INFO] [stdout]    |
[INFO] [stdout] 22 | fn increase(x: &mut i32) {
[INFO] [stdout]    |    ^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `product` is never used
[INFO] [stdout]   --> src/functions.rs:26:4
[INFO] [stdout]    |
[INFO] [stdout] 26 | fn product(x: i32, y: i32) -> i32 {
[INFO] [stdout]    |    ^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `print_value` is never used
[INFO] [stdout]   --> src/functions.rs:31:4
[INFO] [stdout]    |
[INFO] [stdout] 31 | fn print_value(x: i32) {
[INFO] [stdout]    |    ^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct `Point` is never constructed
[INFO] [stdout]   --> src/functions.rs:35:8
[INFO] [stdout]    |
[INFO] [stdout] 35 | struct Point {
[INFO] [stdout]    |        ^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct `Line` is never constructed
[INFO] [stdout]   --> src/functions.rs:40:8
[INFO] [stdout]    |
[INFO] [stdout] 40 | struct Line {
[INFO] [stdout]    |        ^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: method `len` is never used
[INFO] [stdout]   --> src/functions.rs:46:8
[INFO] [stdout]    |
[INFO] [stdout] 45 | impl Line {
[INFO] [stdout]    | --------- method in this implementation
[INFO] [stdout] 46 |     fn len(&self) -> f64 {
[INFO] [stdout]    |        ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `say_hello` is never used
[INFO] [stdout]   --> src/functions.rs:54:4
[INFO] [stdout]    |
[INFO] [stdout] 54 | fn say_hello() {
[INFO] [stdout]    |    ^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `closures` is never used
[INFO] [stdout]   --> src/functions.rs:58:4
[INFO] [stdout]    |
[INFO] [stdout] 58 | fn closures() {
[INFO] [stdout]    |    ^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `higher_order` is never used
[INFO] [stdout]   --> src/functions.rs:83:4
[INFO] [stdout]    |
[INFO] [stdout] 83 | fn higher_order() {
[INFO] [stdout]    |    ^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `is_even` is never used
[INFO] [stdout]    --> src/functions.rs:105:4
[INFO] [stdout]     |
[INFO] [stdout] 105 | fn is_even(x: u32) -> bool {
[INFO] [stdout]     |    ^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `traits` is never used
[INFO] [stdout]    --> src/functions.rs:109:4
[INFO] [stdout]     |
[INFO] [stdout] 109 | fn traits() {
[INFO] [stdout]     |    ^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait `Summable` is never used
[INFO] [stdout]    --> src/functions.rs:119:7
[INFO] [stdout]     |
[INFO] [stdout] 119 | trait Summable<T> {
[INFO] [stdout]     |       ^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait `Animal` is never used
[INFO] [stdout]    --> src/functions.rs:133:7
[INFO] [stdout]     |
[INFO] [stdout] 133 | trait Animal {
[INFO] [stdout]     |       ^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct `Human` is never constructed
[INFO] [stdout]    --> src/functions.rs:141:8
[INFO] [stdout]     |
[INFO] [stdout] 141 | struct Human {
[INFO] [stdout]     |        ^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct `Cat` is never constructed
[INFO] [stdout]    --> src/functions.rs:158:8
[INFO] [stdout]     |
[INFO] [stdout] 158 | struct Cat {
[INFO] [stdout]     |        ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `ds` is never used
[INFO] [stdout]  --> src/moreds.rs:1:8
[INFO] [stdout]   |
[INFO] [stdout] 1 | pub fn ds() {
[INFO] [stdout]   |        ^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `slices` is never used
[INFO] [stdout]  --> src/moreds.rs:9:4
[INFO] [stdout]   |
[INFO] [stdout] 9 | fn slices() {
[INFO] [stdout]   |    ^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `sum` is never used
[INFO] [stdout]   --> src/moreds.rs:15:4
[INFO] [stdout]    |
[INFO] [stdout] 15 | fn sum(slice: &[i32]) -> i32 {
[INFO] [stdout]    |    ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `modify` is never used
[INFO] [stdout]   --> src/moreds.rs:22:4
[INFO] [stdout]    |
[INFO] [stdout] 22 | fn modify(slice: &mut [i32]) {
[INFO] [stdout]    |    ^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `strings` is never used
[INFO] [stdout]   --> src/moreds.rs:28:4
[INFO] [stdout]    |
[INFO] [stdout] 28 | fn strings() {
[INFO] [stdout]    |    ^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `tuples` is never used
[INFO] [stdout]   --> src/moreds.rs:62:4
[INFO] [stdout]    |
[INFO] [stdout] 62 | fn tuples() {
[INFO] [stdout]    |    ^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `sum_and_product` is never used
[INFO] [stdout]   --> src/moreds.rs:72:4
[INFO] [stdout]    |
[INFO] [stdout] 72 | fn sum_and_product(x: i32, y: i32) -> (i32, i32) {
[INFO] [stdout]    |    ^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `pattern_matching` is never used
[INFO] [stdout]   --> src/moreds.rs:76:4
[INFO] [stdout]    |
[INFO] [stdout] 76 | fn pattern_matching() {
[INFO] [stdout]    |    ^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `how_many` is never used
[INFO] [stdout]   --> src/moreds.rs:82:4
[INFO] [stdout]    |
[INFO] [stdout] 82 | fn how_many(x: i32) -> &'static str {
[INFO] [stdout]    |    ^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct `Point` is never constructed
[INFO] [stdout]   --> src/moreds.rs:93:8
[INFO] [stdout]    |
[INFO] [stdout] 93 | struct Point<T> {
[INFO] [stdout]    |        ^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct `Line` is never constructed
[INFO] [stdout]   --> src/moreds.rs:98:8
[INFO] [stdout]    |
[INFO] [stdout] 98 | struct Line<T> {
[INFO] [stdout]    |        ^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `generics` is never used
[INFO] [stdout]    --> src/moreds.rs:103:4
[INFO] [stdout]     |
[INFO] [stdout] 103 | fn generics() {
[INFO] [stdout]     |    ^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct `Point` is never constructed
[INFO] [stdout]  --> src/sh.rs:3:8
[INFO] [stdout]   |
[INFO] [stdout] 3 | struct Point {
[INFO] [stdout]   |        ^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `origin` is never used
[INFO] [stdout]  --> src/sh.rs:8:4
[INFO] [stdout]   |
[INFO] [stdout] 8 | fn origin() -> Point {
[INFO] [stdout]   |    ^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `stack_and_heap` is never used
[INFO] [stdout]   --> src/sh.rs:12:8
[INFO] [stdout]    |
[INFO] [stdout] 12 | pub fn stack_and_heap() {
[INFO] [stdout]    |        ^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable `myLine` should have a snake case name
[INFO] [stdout]   --> src/datastructures.rs:27:9
[INFO] [stdout]    |
[INFO] [stdout] 27 |     let myLine = Line { start: p, end: p2 };
[INFO] [stdout]    |         ^^^^^^ help: convert the identifier to snake case: `my_line`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(non_snake_case)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 70 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] running `Command { std: "docker" "inspect" "09a58b3c3d143d9873ba8a219923d674f3eec5ea6abaa172bf33f793a46fca92", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "09a58b3c3d143d9873ba8a219923d674f3eec5ea6abaa172bf33f793a46fca92", kill_on_drop: false }`
[INFO] [stdout] 09a58b3c3d143d9873ba8a219923d674f3eec5ea6abaa172bf33f793a46fca92