[INFO] cloning repository https://github.com/iamNarcisse/my-rust
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/iamNarcisse/my-rust" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FiamNarcisse%2Fmy-rust", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FiamNarcisse%2Fmy-rust'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 901af1b99efb7117a4f4999778b10472c72b3d00
[INFO] testing iamNarcisse/my-rust against 1.55.0 for beta-1.56-1
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FiamNarcisse%2Fmy-rust" "/workspace/builds/worker-2/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-2/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/iamNarcisse/my-rust on toolchain 1.55.0
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+1.55.0" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/iamNarcisse/my-rust
[INFO] finished tweaking git repo https://github.com/iamNarcisse/my-rust
[INFO] tweaked toml for git repo https://github.com/iamNarcisse/my-rust written to /workspace/builds/worker-2/source/Cargo.toml
[INFO] crate git repo https://github.com/iamNarcisse/my-rust already has a lockfile, it will not be regenerated
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+1.55.0" "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] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded download-async v0.9.7
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-2/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:a89201d6b5b9fd45c15d5952ece0a0129e7e80cb26ec023fd59cf09bc26f1604" "/opt/rustwide/cargo-home/bin/cargo" "+1.55.0" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] f7f8a9fd9cb145e51a01c5a99c9bc9ce8e7dc079ee086cb7d106e11444f9c0bf
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] running `Command { std: "docker" "start" "-a" "f7f8a9fd9cb145e51a01c5a99c9bc9ce8e7dc079ee086cb7d106e11444f9c0bf", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "f7f8a9fd9cb145e51a01c5a99c9bc9ce8e7dc079ee086cb7d106e11444f9c0bf", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "f7f8a9fd9cb145e51a01c5a99c9bc9ce8e7dc079ee086cb7d106e11444f9c0bf", kill_on_drop: false }`
[INFO] [stdout] f7f8a9fd9cb145e51a01c5a99c9bc9ce8e7dc079ee086cb7d106e11444f9c0bf
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-2/source:/opt/rustwide/workdir:ro,Z" "-v" "/var/lib/crater-agent-workspace/cargo-home:/opt/rustwide/cargo-home:ro,Z" "-v" "/var/lib/crater-agent-workspace/rustup-home:/opt/rustwide/rustup-home:ro,Z" "-e" "SOURCE_DIR=/opt/rustwide/workdir" "-e" "CARGO_TARGET_DIR=/opt/rustwide/target" "-e" "CARGO_INCREMENTAL=0" "-e" "RUST_BACKTRACE=full" "-e" "RUSTFLAGS=--cap-lints=warn" "-e" "CARGO_HOME=/opt/rustwide/cargo-home" "-e" "RUSTUP_HOME=/opt/rustwide/rustup-home" "-w" "/opt/rustwide/workdir" "-m" "1610612736" "--user" "0:0" "--network" "none" "ghcr.io/rust-lang/crates-build-env/linux@sha256:a89201d6b5b9fd45c15d5952ece0a0129e7e80cb26ec023fd59cf09bc26f1604" "/opt/rustwide/cargo-home/bin/cargo" "+1.55.0" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] [stdout] 54b0843d35d7080a83d0cc1843f7f2f6bebc8c7321ba4562aadf6f55314b92f9
[INFO] running `Command { std: "docker" "start" "-a" "54b0843d35d7080a83d0cc1843f7f2f6bebc8c7321ba4562aadf6f55314b92f9", kill_on_drop: false }`
[INFO] [stderr]    Compiling libc v0.2.91
[INFO] [stderr]    Compiling syn v1.0.64
[INFO] [stderr]    Compiling memchr v2.3.4
[INFO] [stderr]    Compiling futures-core v0.3.13
[INFO] [stderr]    Compiling futures-task v0.3.13
[INFO] [stderr]    Compiling futures-sink v0.3.13
[INFO] [stderr]    Compiling httparse v1.3.5
[INFO] [stderr]    Compiling async-trait v0.1.48
[INFO] [stderr]    Compiling tower-layer v0.3.1
[INFO] [stderr]    Compiling tokio v1.4.0
[INFO] [stderr]    Compiling http v0.2.3
[INFO] [stderr]    Compiling quote v1.0.9
[INFO] [stderr]    Compiling futures-channel v0.3.13
[INFO] [stderr]    Compiling futures-util v0.3.13
[INFO] [stderr]    Compiling mio v0.7.11
[INFO] [stderr]    Compiling openssl-sys v0.9.61
[INFO] [stderr]    Compiling socket2 v0.3.19
[INFO] [stderr]    Compiling openssl v0.10.33
[INFO] [stderr]    Compiling http-body v0.4.1
[INFO] [stderr]    Compiling native-tls v0.2.7
[INFO] [stderr]    Compiling tokio-util v0.6.5
[INFO] [stderr]    Compiling tokio-native-tls v0.3.0
[INFO] [stderr]    Compiling tracing-attributes v0.1.15
[INFO] [stderr]    Compiling pin-project-internal v1.0.6
[INFO] [stderr]    Compiling tracing v0.1.25
[INFO] [stderr]    Compiling pin-project v1.0.6
[INFO] [stderr]    Compiling h2 v0.3.2
[INFO] [stderr]    Compiling tower v0.4.6
[INFO] [stderr]    Compiling hyper v0.14.4
[INFO] [stderr]    Compiling hyper-tls v0.5.0
[INFO] [stderr]    Compiling download-async v0.9.7
[INFO] [stderr]    Compiling hello_app v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unused import: `std::thread`
[INFO] [stdout]  --> src/download/download.rs:1:5
[INFO] [stdout]   |
[INFO] [stdout] 1 | use std::thread;
[INFO] [stdout]   |     ^^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `p`
[INFO] [stdout]   --> src/error_handling/combinators.rs:26:9
[INFO] [stdout]    |
[INFO] [stdout] 26 |     let p = peel(apple);
[INFO] [stdout]    |         ^ help: if this is intentional, prefix it with an underscore: `_p`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_variables)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `download_from_net_thread`
[INFO] [stdout]  --> src/download/download.rs:3:4
[INFO] [stdout]   |
[INFO] [stdout] 3 | fn download_from_net_thread() {
[INFO] [stdout]   |    ^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `index`
[INFO] [stdout]  --> src/variable/mutability.rs:1:8
[INFO] [stdout]   |
[INFO] [stdout] 1 | pub fn index() {
[INFO] [stdout]   |        ^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `index`
[INFO] [stdout]  --> src/variable/variable.rs:1:8
[INFO] [stdout]   |
[INFO] [stdout] 1 | pub fn index() {
[INFO] [stdout]   |        ^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `shadowing`
[INFO] [stdout]  --> src/variable/scoping.rs:1:4
[INFO] [stdout]   |
[INFO] [stdout] 1 | fn shadowing() {
[INFO] [stdout]   |    ^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `freezing`
[INFO] [stdout]   --> src/variable/scoping.rs:18:4
[INFO] [stdout]    |
[INFO] [stdout] 18 | fn freezing() {
[INFO] [stdout]    |    ^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `index`
[INFO] [stdout]   --> src/variable/scoping.rs:27:8
[INFO] [stdout]    |
[INFO] [stdout] 27 | pub fn index() {
[INFO] [stdout]    |        ^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `literals`
[INFO] [stdout]  --> src/types/literals.rs:1:8
[INFO] [stdout]   |
[INFO] [stdout] 1 | pub fn literals() {
[INFO] [stdout]   |        ^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `index`
[INFO] [stdout]  --> src/types/casting.rs:7:8
[INFO] [stdout]   |
[INFO] [stdout] 7 | pub fn index() {
[INFO] [stdout]   |        ^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `index`
[INFO] [stdout]  --> src/inference/inference.rs:1:8
[INFO] [stdout]   |
[INFO] [stdout] 1 | pub fn index() {
[INFO] [stdout]   |        ^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: type alias is never used: `Narcisse`
[INFO] [stdout]  --> src/types/aliasing.rs:1:1
[INFO] [stdout]   |
[INFO] [stdout] 1 | type Narcisse = u64;
[INFO] [stdout]   | ^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: type alias is never used: `Inch`
[INFO] [stdout]  --> src/types/aliasing.rs:2:1
[INFO] [stdout]   |
[INFO] [stdout] 2 | type Inch = u64;
[INFO] [stdout]   | ^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `index`
[INFO] [stdout]  --> src/types/aliasing.rs:8:8
[INFO] [stdout]   |
[INFO] [stdout] 8 | pub fn index() {
[INFO] [stdout]   |        ^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `index`
[INFO] [stdout]   --> src/conversion/from_into.rs:14:8
[INFO] [stdout]    |
[INFO] [stdout] 14 | pub fn index() {
[INFO] [stdout]    |        ^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `handle_while`
[INFO] [stdout]  --> src/flow_control/index.rs:1:4
[INFO] [stdout]   |
[INFO] [stdout] 1 | fn handle_while() {
[INFO] [stdout]   |    ^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `for_range`
[INFO] [stdout]   --> src/flow_control/index.rs:19:4
[INFO] [stdout]    |
[INFO] [stdout] 19 | fn for_range() {
[INFO] [stdout]    |    ^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `iterators`
[INFO] [stdout]   --> src/flow_control/index.rs:33:4
[INFO] [stdout]    |
[INFO] [stdout] 33 | fn iterators() {
[INFO] [stdout]    |    ^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `handle_match`
[INFO] [stdout]   --> src/flow_control/index.rs:58:4
[INFO] [stdout]    |
[INFO] [stdout] 58 | fn handle_match() {
[INFO] [stdout]    |    ^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `match_tuple`
[INFO] [stdout]   --> src/flow_control/index.rs:80:4
[INFO] [stdout]    |
[INFO] [stdout] 80 | fn match_tuple() {
[INFO] [stdout]    |    ^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `index`
[INFO] [stdout]   --> src/flow_control/index.rs:92:8
[INFO] [stdout]    |
[INFO] [stdout] 92 | pub fn index() {
[INFO] [stdout]    |        ^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct is never constructed: `Unit`
[INFO] [stdout]  --> src/custom_types/index.rs:9:8
[INFO] [stdout]   |
[INFO] [stdout] 9 | struct Unit;
[INFO] [stdout]   |        ^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `index`
[INFO] [stdout]   --> src/custom_types/index.rs:30:8
[INFO] [stdout]    |
[INFO] [stdout] 30 | pub fn index() {
[INFO] [stdout]    |        ^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `square`
[INFO] [stdout]   --> src/custom_types/index.rs:76:4
[INFO] [stdout]    |
[INFO] [stdout] 76 | fn square(point: Point, top: f32, bottom: f32) -> Rectangle {
[INFO] [stdout]    |    ^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `rect_area`
[INFO] [stdout]   --> src/custom_types/index.rs:85:4
[INFO] [stdout]    |
[INFO] [stdout] 85 | fn rect_area(rectange: Rectangle) -> f32 {
[INFO] [stdout]    |    ^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `is_divisible`
[INFO] [stdout]  --> src/functions/index.rs:5:4
[INFO] [stdout]   |
[INFO] [stdout] 5 | fn is_divisible(lhs: u32, rhs: u32) -> bool {
[INFO] [stdout]   |    ^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `fizz_buzz`
[INFO] [stdout]   --> src/functions/index.rs:12:4
[INFO] [stdout]    |
[INFO] [stdout] 12 | fn fizz_buzz(num: u32) {
[INFO] [stdout]    |    ^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct is never constructed: `Person`
[INFO] [stdout]   --> src/functions/index.rs:24:8
[INFO] [stdout]    |
[INFO] [stdout] 24 | struct Person {
[INFO] [stdout]    |        ^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct is never constructed: `Point`
[INFO] [stdout]   --> src/functions/index.rs:29:8
[INFO] [stdout]    |
[INFO] [stdout] 29 | struct Point {
[INFO] [stdout]    |        ^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `origin`
[INFO] [stdout]   --> src/functions/index.rs:35:8
[INFO] [stdout]    |
[INFO] [stdout] 35 |     fn origin() -> Point {
[INFO] [stdout]    |        ^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `new_point`
[INFO] [stdout]   --> src/functions/index.rs:39:8
[INFO] [stdout]    |
[INFO] [stdout] 39 |     fn new_point(x: f64, y: f64) -> Point {
[INFO] [stdout]    |        ^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct is never constructed: `Rectangle`
[INFO] [stdout]   --> src/functions/index.rs:43:8
[INFO] [stdout]    |
[INFO] [stdout] 43 | struct Rectangle {
[INFO] [stdout]    |        ^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct is never constructed: `Circle`
[INFO] [stdout]   --> src/functions/index.rs:48:8
[INFO] [stdout]    |
[INFO] [stdout] 48 | struct Circle {
[INFO] [stdout]    |        ^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `area`
[INFO] [stdout]   --> src/functions/index.rs:53:8
[INFO] [stdout]    |
[INFO] [stdout] 53 |     fn area(&self) -> f64 {
[INFO] [stdout]    |        ^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `perimeter`
[INFO] [stdout]   --> src/functions/index.rs:58:8
[INFO] [stdout]    |
[INFO] [stdout] 58 |     fn perimeter(&self) -> f64 {
[INFO] [stdout]    |        ^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `area`
[INFO] [stdout]   --> src/functions/index.rs:66:8
[INFO] [stdout]    |
[INFO] [stdout] 66 |     fn area(&self) -> f64 {
[INFO] [stdout]    |        ^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `perimeter`
[INFO] [stdout]   --> src/functions/index.rs:73:8
[INFO] [stdout]    |
[INFO] [stdout] 73 |     fn perimeter(&self) -> f64 {
[INFO] [stdout]    |        ^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `closures`
[INFO] [stdout]   --> src/functions/index.rs:81:4
[INFO] [stdout]    |
[INFO] [stdout] 81 | fn closures() {
[INFO] [stdout]    |    ^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `main`
[INFO] [stdout]    --> src/functions/index.rs:100:8
[INFO] [stdout]     |
[INFO] [stdout] 100 | pub fn main() {
[INFO] [stdout]     |        ^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `drink`
[INFO] [stdout]  --> src/error_handling/index.rs:3:4
[INFO] [stdout]   |
[INFO] [stdout] 3 | fn drink(drink: &str) {
[INFO] [stdout]   |    ^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `give_adult`
[INFO] [stdout]   --> src/error_handling/index.rs:11:4
[INFO] [stdout]    |
[INFO] [stdout] 11 | fn give_adult(drink: Option<&str>) {
[INFO] [stdout]    |    ^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `drink_with_unwrap`
[INFO] [stdout]   --> src/error_handling/index.rs:19:4
[INFO] [stdout]    |
[INFO] [stdout] 19 | fn drink_with_unwrap(drink: Option<&str>) {
[INFO] [stdout]    |    ^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct is never constructed: `Person`
[INFO] [stdout]   --> src/error_handling/index.rs:35:8
[INFO] [stdout]    |
[INFO] [stdout] 35 | struct Person {
[INFO] [stdout]    |        ^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field is never read: `phone_number`
[INFO] [stdout]   --> src/error_handling/index.rs:41:5
[INFO] [stdout]    |
[INFO] [stdout] 41 |     phone_number: Option<PhoneNumber>,
[INFO] [stdout]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field is never read: `area_code`
[INFO] [stdout]   --> src/error_handling/index.rs:46:5
[INFO] [stdout]    |
[INFO] [stdout] 46 |     area_code: Option<u8>,
[INFO] [stdout]    |     ^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field is never read: `number`
[INFO] [stdout]   --> src/error_handling/index.rs:47:5
[INFO] [stdout]    |
[INFO] [stdout] 47 |     number: u32,
[INFO] [stdout]    |     ^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `work_phone_area_code`
[INFO] [stdout]   --> src/error_handling/index.rs:51:8
[INFO] [stdout]    |
[INFO] [stdout] 51 |     fn work_phone_area_code(&self) -> Option<u8> {
[INFO] [stdout]    |        ^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `test`
[INFO] [stdout]   --> src/error_handling/index.rs:56:4
[INFO] [stdout]    |
[INFO] [stdout] 56 | fn test() {
[INFO] [stdout]    |    ^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 48 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 52.18s
[INFO] running `Command { std: "docker" "inspect" "54b0843d35d7080a83d0cc1843f7f2f6bebc8c7321ba4562aadf6f55314b92f9", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "54b0843d35d7080a83d0cc1843f7f2f6bebc8c7321ba4562aadf6f55314b92f9", kill_on_drop: false }`
[INFO] [stdout] 54b0843d35d7080a83d0cc1843f7f2f6bebc8c7321ba4562aadf6f55314b92f9
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-2/source:/opt/rustwide/workdir:ro,Z" "-v" "/var/lib/crater-agent-workspace/cargo-home:/opt/rustwide/cargo-home:ro,Z" "-v" "/var/lib/crater-agent-workspace/rustup-home:/opt/rustwide/rustup-home:ro,Z" "-e" "SOURCE_DIR=/opt/rustwide/workdir" "-e" "CARGO_TARGET_DIR=/opt/rustwide/target" "-e" "CARGO_INCREMENTAL=0" "-e" "RUST_BACKTRACE=full" "-e" "RUSTFLAGS=--cap-lints=warn" "-e" "CARGO_HOME=/opt/rustwide/cargo-home" "-e" "RUSTUP_HOME=/opt/rustwide/rustup-home" "-w" "/opt/rustwide/workdir" "-m" "1610612736" "--user" "0:0" "--network" "none" "ghcr.io/rust-lang/crates-build-env/linux@sha256:a89201d6b5b9fd45c15d5952ece0a0129e7e80cb26ec023fd59cf09bc26f1604" "/opt/rustwide/cargo-home/bin/cargo" "+1.55.0" "test" "--frozen" "--no-run" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 135f1a30fdc9782fabad7cc27e4c3f2dfb881644ebcdd842fdc8a0309fe3b44a
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] running `Command { std: "docker" "start" "-a" "135f1a30fdc9782fabad7cc27e4c3f2dfb881644ebcdd842fdc8a0309fe3b44a", kill_on_drop: false }`
[INFO] [stderr]    Compiling hello_app v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unused import: `std::thread`
[INFO] [stdout]  --> src/download/download.rs:1:5
[INFO] [stdout]   |
[INFO] [stdout] 1 | use std::thread;
[INFO] [stdout]   |     ^^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `p`
[INFO] [stdout]   --> src/error_handling/combinators.rs:26:9
[INFO] [stdout]    |
[INFO] [stdout] 26 |     let p = peel(apple);
[INFO] [stdout]    |         ^ help: if this is intentional, prefix it with an underscore: `_p`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_variables)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `download_from_net_thread`
[INFO] [stdout]  --> src/download/download.rs:3:4
[INFO] [stdout]   |
[INFO] [stdout] 3 | fn download_from_net_thread() {
[INFO] [stdout]   |    ^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `index`
[INFO] [stdout]  --> src/variable/mutability.rs:1:8
[INFO] [stdout]   |
[INFO] [stdout] 1 | pub fn index() {
[INFO] [stdout]   |        ^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `index`
[INFO] [stdout]  --> src/variable/variable.rs:1:8
[INFO] [stdout]   |
[INFO] [stdout] 1 | pub fn index() {
[INFO] [stdout]   |        ^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `shadowing`
[INFO] [stdout]  --> src/variable/scoping.rs:1:4
[INFO] [stdout]   |
[INFO] [stdout] 1 | fn shadowing() {
[INFO] [stdout]   |    ^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `freezing`
[INFO] [stdout]   --> src/variable/scoping.rs:18:4
[INFO] [stdout]    |
[INFO] [stdout] 18 | fn freezing() {
[INFO] [stdout]    |    ^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `index`
[INFO] [stdout]   --> src/variable/scoping.rs:27:8
[INFO] [stdout]    |
[INFO] [stdout] 27 | pub fn index() {
[INFO] [stdout]    |        ^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `literals`
[INFO] [stdout]  --> src/types/literals.rs:1:8
[INFO] [stdout]   |
[INFO] [stdout] 1 | pub fn literals() {
[INFO] [stdout]   |        ^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `index`
[INFO] [stdout]  --> src/types/casting.rs:7:8
[INFO] [stdout]   |
[INFO] [stdout] 7 | pub fn index() {
[INFO] [stdout]   |        ^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `index`
[INFO] [stdout]  --> src/inference/inference.rs:1:8
[INFO] [stdout]   |
[INFO] [stdout] 1 | pub fn index() {
[INFO] [stdout]   |        ^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: type alias is never used: `Narcisse`
[INFO] [stdout]  --> src/types/aliasing.rs:1:1
[INFO] [stdout]   |
[INFO] [stdout] 1 | type Narcisse = u64;
[INFO] [stdout]   | ^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: type alias is never used: `Inch`
[INFO] [stdout]  --> src/types/aliasing.rs:2:1
[INFO] [stdout]   |
[INFO] [stdout] 2 | type Inch = u64;
[INFO] [stdout]   | ^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `index`
[INFO] [stdout]  --> src/types/aliasing.rs:8:8
[INFO] [stdout]   |
[INFO] [stdout] 8 | pub fn index() {
[INFO] [stdout]   |        ^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `index`
[INFO] [stdout]   --> src/conversion/from_into.rs:14:8
[INFO] [stdout]    |
[INFO] [stdout] 14 | pub fn index() {
[INFO] [stdout]    |        ^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `handle_while`
[INFO] [stdout]  --> src/flow_control/index.rs:1:4
[INFO] [stdout]   |
[INFO] [stdout] 1 | fn handle_while() {
[INFO] [stdout]   |    ^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `for_range`
[INFO] [stdout]   --> src/flow_control/index.rs:19:4
[INFO] [stdout]    |
[INFO] [stdout] 19 | fn for_range() {
[INFO] [stdout]    |    ^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `iterators`
[INFO] [stdout]   --> src/flow_control/index.rs:33:4
[INFO] [stdout]    |
[INFO] [stdout] 33 | fn iterators() {
[INFO] [stdout]    |    ^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `handle_match`
[INFO] [stdout]   --> src/flow_control/index.rs:58:4
[INFO] [stdout]    |
[INFO] [stdout] 58 | fn handle_match() {
[INFO] [stdout]    |    ^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `match_tuple`
[INFO] [stdout]   --> src/flow_control/index.rs:80:4
[INFO] [stdout]    |
[INFO] [stdout] 80 | fn match_tuple() {
[INFO] [stdout]    |    ^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `index`
[INFO] [stdout]   --> src/flow_control/index.rs:92:8
[INFO] [stdout]    |
[INFO] [stdout] 92 | pub fn index() {
[INFO] [stdout]    |        ^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct is never constructed: `Unit`
[INFO] [stdout]  --> src/custom_types/index.rs:9:8
[INFO] [stdout]   |
[INFO] [stdout] 9 | struct Unit;
[INFO] [stdout]   |        ^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `index`
[INFO] [stdout]   --> src/custom_types/index.rs:30:8
[INFO] [stdout]    |
[INFO] [stdout] 30 | pub fn index() {
[INFO] [stdout]    |        ^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `square`
[INFO] [stdout]   --> src/custom_types/index.rs:76:4
[INFO] [stdout]    |
[INFO] [stdout] 76 | fn square(point: Point, top: f32, bottom: f32) -> Rectangle {
[INFO] [stdout]    |    ^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `rect_area`
[INFO] [stdout]   --> src/custom_types/index.rs:85:4
[INFO] [stdout]    |
[INFO] [stdout] 85 | fn rect_area(rectange: Rectangle) -> f32 {
[INFO] [stdout]    |    ^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `is_divisible`
[INFO] [stdout]  --> src/functions/index.rs:5:4
[INFO] [stdout]   |
[INFO] [stdout] 5 | fn is_divisible(lhs: u32, rhs: u32) -> bool {
[INFO] [stdout]   |    ^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `fizz_buzz`
[INFO] [stdout]   --> src/functions/index.rs:12:4
[INFO] [stdout]    |
[INFO] [stdout] 12 | fn fizz_buzz(num: u32) {
[INFO] [stdout]    |    ^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct is never constructed: `Person`
[INFO] [stdout]   --> src/functions/index.rs:24:8
[INFO] [stdout]    |
[INFO] [stdout] 24 | struct Person {
[INFO] [stdout]    |        ^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct is never constructed: `Point`
[INFO] [stdout]   --> src/functions/index.rs:29:8
[INFO] [stdout]    |
[INFO] [stdout] 29 | struct Point {
[INFO] [stdout]    |        ^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `origin`
[INFO] [stdout]   --> src/functions/index.rs:35:8
[INFO] [stdout]    |
[INFO] [stdout] 35 |     fn origin() -> Point {
[INFO] [stdout]    |        ^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `new_point`
[INFO] [stdout]   --> src/functions/index.rs:39:8
[INFO] [stdout]    |
[INFO] [stdout] 39 |     fn new_point(x: f64, y: f64) -> Point {
[INFO] [stdout]    |        ^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct is never constructed: `Rectangle`
[INFO] [stdout]   --> src/functions/index.rs:43:8
[INFO] [stdout]    |
[INFO] [stdout] 43 | struct Rectangle {
[INFO] [stdout]    |        ^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct is never constructed: `Circle`
[INFO] [stdout]   --> src/functions/index.rs:48:8
[INFO] [stdout]    |
[INFO] [stdout] 48 | struct Circle {
[INFO] [stdout]    |        ^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `area`
[INFO] [stdout]   --> src/functions/index.rs:53:8
[INFO] [stdout]    |
[INFO] [stdout] 53 |     fn area(&self) -> f64 {
[INFO] [stdout]    |        ^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `perimeter`
[INFO] [stdout]   --> src/functions/index.rs:58:8
[INFO] [stdout]    |
[INFO] [stdout] 58 |     fn perimeter(&self) -> f64 {
[INFO] [stdout]    |        ^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `area`
[INFO] [stdout]   --> src/functions/index.rs:66:8
[INFO] [stdout]    |
[INFO] [stdout] 66 |     fn area(&self) -> f64 {
[INFO] [stdout]    |        ^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `perimeter`
[INFO] [stdout]   --> src/functions/index.rs:73:8
[INFO] [stdout]    |
[INFO] [stdout] 73 |     fn perimeter(&self) -> f64 {
[INFO] [stdout]    |        ^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `closures`
[INFO] [stdout]   --> src/functions/index.rs:81:4
[INFO] [stdout]    |
[INFO] [stdout] 81 | fn closures() {
[INFO] [stdout]    |    ^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `main`
[INFO] [stdout]    --> src/functions/index.rs:100:8
[INFO] [stdout]     |
[INFO] [stdout] 100 | pub fn main() {
[INFO] [stdout]     |        ^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `drink`
[INFO] [stdout]  --> src/error_handling/index.rs:3:4
[INFO] [stdout]   |
[INFO] [stdout] 3 | fn drink(drink: &str) {
[INFO] [stdout]   |    ^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `give_adult`
[INFO] [stdout]   --> src/error_handling/index.rs:11:4
[INFO] [stdout]    |
[INFO] [stdout] 11 | fn give_adult(drink: Option<&str>) {
[INFO] [stdout]    |    ^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `drink_with_unwrap`
[INFO] [stdout]   --> src/error_handling/index.rs:19:4
[INFO] [stdout]    |
[INFO] [stdout] 19 | fn drink_with_unwrap(drink: Option<&str>) {
[INFO] [stdout]    |    ^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct is never constructed: `Person`
[INFO] [stdout]   --> src/error_handling/index.rs:35:8
[INFO] [stdout]    |
[INFO] [stdout] 35 | struct Person {
[INFO] [stdout]    |        ^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field is never read: `phone_number`
[INFO] [stdout]   --> src/error_handling/index.rs:41:5
[INFO] [stdout]    |
[INFO] [stdout] 41 |     phone_number: Option<PhoneNumber>,
[INFO] [stdout]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field is never read: `area_code`
[INFO] [stdout]   --> src/error_handling/index.rs:46:5
[INFO] [stdout]    |
[INFO] [stdout] 46 |     area_code: Option<u8>,
[INFO] [stdout]    |     ^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field is never read: `number`
[INFO] [stdout]   --> src/error_handling/index.rs:47:5
[INFO] [stdout]    |
[INFO] [stdout] 47 |     number: u32,
[INFO] [stdout]    |     ^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `work_phone_area_code`
[INFO] [stdout]   --> src/error_handling/index.rs:51:8
[INFO] [stdout]    |
[INFO] [stdout] 51 |     fn work_phone_area_code(&self) -> Option<u8> {
[INFO] [stdout]    |        ^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `test`
[INFO] [stdout]   --> src/error_handling/index.rs:56:4
[INFO] [stdout]    |
[INFO] [stdout] 56 | fn test() {
[INFO] [stdout]    |    ^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 48 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 0.93s
[INFO] running `Command { std: "docker" "inspect" "135f1a30fdc9782fabad7cc27e4c3f2dfb881644ebcdd842fdc8a0309fe3b44a", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "135f1a30fdc9782fabad7cc27e4c3f2dfb881644ebcdd842fdc8a0309fe3b44a", kill_on_drop: false }`
[INFO] [stdout] 135f1a30fdc9782fabad7cc27e4c3f2dfb881644ebcdd842fdc8a0309fe3b44a
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-2/source:/opt/rustwide/workdir:ro,Z" "-v" "/var/lib/crater-agent-workspace/cargo-home:/opt/rustwide/cargo-home:ro,Z" "-v" "/var/lib/crater-agent-workspace/rustup-home:/opt/rustwide/rustup-home:ro,Z" "-e" "SOURCE_DIR=/opt/rustwide/workdir" "-e" "CARGO_TARGET_DIR=/opt/rustwide/target" "-e" "CARGO_INCREMENTAL=0" "-e" "RUST_BACKTRACE=full" "-e" "RUSTFLAGS=--cap-lints=warn" "-e" "CARGO_HOME=/opt/rustwide/cargo-home" "-e" "RUSTUP_HOME=/opt/rustwide/rustup-home" "-w" "/opt/rustwide/workdir" "-m" "1610612736" "--user" "0:0" "--network" "none" "ghcr.io/rust-lang/crates-build-env/linux@sha256:a89201d6b5b9fd45c15d5952ece0a0129e7e80cb26ec023fd59cf09bc26f1604" "/opt/rustwide/cargo-home/bin/cargo" "+1.55.0" "test" "--frozen", kill_on_drop: false }`
[INFO] [stdout] 31071930e73367882adb6f98bc6fb48cf7ac5cc7d89a6eae0d654c43d9e009ec
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] running `Command { std: "docker" "start" "-a" "31071930e73367882adb6f98bc6fb48cf7ac5cc7d89a6eae0d654c43d9e009ec", kill_on_drop: false }`
[INFO] [stderr] warning: unused import: `std::thread`
[INFO] [stderr]  --> src/download/download.rs:1:5
[INFO] [stderr]   |
[INFO] [stderr] 1 | use std::thread;
[INFO] [stderr]   |     ^^^^^^^^^^^
[INFO] [stderr]   |
[INFO] [stderr]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `p`
[INFO] [stderr]   --> src/error_handling/combinators.rs:26:9
[INFO] [stderr]    |
[INFO] [stderr] 26 |     let p = peel(apple);
[INFO] [stderr]    |         ^ help: if this is intentional, prefix it with an underscore: `_p`
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(unused_variables)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: function is never used: `download_from_net_thread`
[INFO] [stderr]  --> src/download/download.rs:3:4
[INFO] [stderr]   |
[INFO] [stderr] 3 | fn download_from_net_thread() {
[INFO] [stderr]   |    ^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]   |
[INFO] [stderr]   = note: `#[warn(dead_code)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: function is never used: `index`
[INFO] [stderr]  --> src/variable/mutability.rs:1:8
[INFO] [stderr]   |
[INFO] [stderr] 1 | pub fn index() {
[INFO] [stderr]   |        ^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: function is never used: `index`
[INFO] [stderr]  --> src/variable/variable.rs:1:8
[INFO] [stderr]   |
[INFO] [stderr] 1 | pub fn index() {
[INFO] [stderr]   |        ^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: function is never used: `shadowing`
[INFO] [stderr]  --> src/variable/scoping.rs:1:4
[INFO] [stderr]   |
[INFO] [stderr] 1 | fn shadowing() {
[INFO] [stderr]   |    ^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: function is never used: `freezing`
[INFO] [stderr]   --> src/variable/scoping.rs:18:4
[INFO] [stderr]    |
[INFO] [stderr] 18 | fn freezing() {
[INFO] [stderr]    |    ^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: function is never used: `index`
[INFO] [stderr]   --> src/variable/scoping.rs:27:8
[INFO] [stderr]    |
[INFO] [stderr] 27 | pub fn index() {
[INFO] [stderr]    |        ^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: function is never used: `literals`
[INFO] [stderr]  --> src/types/literals.rs:1:8
[INFO] [stderr]   |
[INFO] [stderr] 1 | pub fn literals() {
[INFO] [stderr]   |        ^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: function is never used: `index`
[INFO] [stderr]  --> src/types/casting.rs:7:8
[INFO] [stderr]   |
[INFO] [stderr] 7 | pub fn index() {
[INFO] [stderr]   |        ^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: function is never used: `index`
[INFO] [stderr]  --> src/inference/inference.rs:1:8
[INFO] [stderr]   |
[INFO] [stderr] 1 | pub fn index() {
[INFO] [stderr]   |        ^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: type alias is never used: `Narcisse`
[INFO] [stderr]  --> src/types/aliasing.rs:1:1
[INFO] [stderr]   |
[INFO] [stderr] 1 | type Narcisse = u64;
[INFO] [stderr]   | ^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: type alias is never used: `Inch`
[INFO] [stderr]  --> src/types/aliasing.rs:2:1
[INFO] [stderr]   |
[INFO] [stderr] 2 | type Inch = u64;
[INFO] [stderr]   | ^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: function is never used: `index`
[INFO] [stderr]  --> src/types/aliasing.rs:8:8
[INFO] [stderr]   |
[INFO] [stderr] 8 | pub fn index() {
[INFO] [stderr]   |        ^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: function is never used: `index`
[INFO] [stderr]   --> src/conversion/from_into.rs:14:8
[INFO] [stderr]    |
[INFO] [stderr] 14 | pub fn index() {
[INFO] [stderr]    |        ^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: function is never used: `handle_while`
[INFO] [stderr]  --> src/flow_control/index.rs:1:4
[INFO] [stderr]   |
[INFO] [stderr] 1 | fn handle_while() {
[INFO] [stderr]   |    ^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: function is never used: `for_range`
[INFO] [stderr]   --> src/flow_control/index.rs:19:4
[INFO] [stderr]    |
[INFO] [stderr] 19 | fn for_range() {
[INFO] [stderr]    |    ^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: function is never used: `iterators`
[INFO] [stderr]   --> src/flow_control/index.rs:33:4
[INFO] [stderr]    |
[INFO] [stderr] 33 | fn iterators() {
[INFO] [stderr]    |    ^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: function is never used: `handle_match`
[INFO] [stderr]   --> src/flow_control/index.rs:58:4
[INFO] [stderr]    |
[INFO] [stderr] 58 | fn handle_match() {
[INFO] [stderr]    |    ^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: function is never used: `match_tuple`
[INFO] [stderr]   --> src/flow_control/index.rs:80:4
[INFO] [stderr]    |
[INFO] [stderr] 80 | fn match_tuple() {
[INFO] [stderr]    |    ^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: function is never used: `index`
[INFO] [stderr]   --> src/flow_control/index.rs:92:8
[INFO] [stderr]    |
[INFO] [stderr] 92 | pub fn index() {
[INFO] [stderr]    |        ^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: struct is never constructed: `Unit`
[INFO] [stderr]  --> src/custom_types/index.rs:9:8
[INFO] [stderr]   |
[INFO] [stderr] 9 | struct Unit;
[INFO] [stderr]   |        ^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: function is never used: `index`
[INFO] [stderr]   --> src/custom_types/index.rs:30:8
[INFO] [stderr]    |
[INFO] [stderr] 30 | pub fn index() {
[INFO] [stderr]    |        ^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: function is never used: `square`
[INFO] [stderr]   --> src/custom_types/index.rs:76:4
[INFO] [stderr]    |
[INFO] [stderr] 76 | fn square(point: Point, top: f32, bottom: f32) -> Rectangle {
[INFO] [stderr]    |    ^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: function is never used: `rect_area`
[INFO] [stderr]   --> src/custom_types/index.rs:85:4
[INFO] [stderr]    |
[INFO] [stderr] 85 | fn rect_area(rectange: Rectangle) -> f32 {
[INFO] [stderr]    |    ^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: function is never used: `is_divisible`
[INFO] [stderr]  --> src/functions/index.rs:5:4
[INFO] [stderr]   |
[INFO] [stderr] 5 | fn is_divisible(lhs: u32, rhs: u32) -> bool {
[INFO] [stderr]   |    ^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: function is never used: `fizz_buzz`
[INFO] [stderr]   --> src/functions/index.rs:12:4
[INFO] [stderr]    |
[INFO] [stderr] 12 | fn fizz_buzz(num: u32) {
[INFO] [stderr]    |    ^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: struct is never constructed: `Person`
[INFO] [stderr]   --> src/functions/index.rs:24:8
[INFO] [stderr]    |
[INFO] [stderr] 24 | struct Person {
[INFO] [stderr]    |        ^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: struct is never constructed: `Point`
[INFO] [stderr]   --> src/functions/index.rs:29:8
[INFO] [stderr]    |
[INFO] [stderr] 29 | struct Point {
[INFO] [stderr]    |        ^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: associated function is never used: `origin`
[INFO] [stderr]   --> src/functions/index.rs:35:8
[INFO] [stderr]    |
[INFO] [stderr] 35 |     fn origin() -> Point {
[INFO] [stderr]    |        ^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: associated function is never used: `new_point`
[INFO] [stderr]   --> src/functions/index.rs:39:8
[INFO] [stderr]    |
[INFO] [stderr] 39 |     fn new_point(x: f64, y: f64) -> Point {
[INFO] [stderr]    |        ^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: struct is never constructed: `Rectangle`
[INFO] [stderr]   --> src/functions/index.rs:43:8
[INFO] [stderr]    |
[INFO] [stderr] 43 | struct Rectangle {
[INFO] [stderr]    |        ^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: struct is never constructed: `Circle`
[INFO] [stderr]   --> src/functions/index.rs:48:8
[INFO] [stderr]    |
[INFO] [stderr] 48 | struct Circle {
[INFO] [stderr]    |        ^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: associated function is never used: `area`
[INFO] [stderr]   --> src/functions/index.rs:53:8
[INFO] [stderr]    |
[INFO] [stderr] 53 |     fn area(&self) -> f64 {
[INFO] [stderr]    |        ^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: associated function is never used: `perimeter`
[INFO] [stderr]   --> src/functions/index.rs:58:8
[INFO] [stderr]    |
[INFO] [stderr] 58 |     fn perimeter(&self) -> f64 {
[INFO] [stderr]    |        ^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: associated function is never used: `area`
[INFO] [stderr]   --> src/functions/index.rs:66:8
[INFO] [stderr]    |
[INFO] [stderr] 66 |     fn area(&self) -> f64 {
[INFO] [stderr]    |        ^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: associated function is never used: `perimeter`
[INFO] [stderr]   --> src/functions/index.rs:73:8
[INFO] [stderr]    |
[INFO] [stderr] 73 |     fn perimeter(&self) -> f64 {
[INFO] [stderr]    |        ^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: function is never used: `closures`
[INFO] [stderr]   --> src/functions/index.rs:81:4
[INFO] [stderr]    |
[INFO] [stderr] 81 | fn closures() {
[INFO] [stderr]    |    ^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: function is never used: `main`
[INFO] [stderr]    --> src/functions/index.rs:100:8
[INFO] [stderr]     |
[INFO] [stderr] 100 | pub fn main() {
[INFO] [stderr]     |        ^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: function is never used: `drink`
[INFO] [stderr]  --> src/error_handling/index.rs:3:4
[INFO] [stderr]   |
[INFO] [stderr] 3 | fn drink(drink: &str) {
[INFO] [stderr]   |    ^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: function is never used: `give_adult`
[INFO] [stderr]   --> src/error_handling/index.rs:11:4
[INFO] [stderr]    |
[INFO] [stderr] 11 | fn give_adult(drink: Option<&str>) {
[INFO] [stderr]    |    ^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: function is never used: `drink_with_unwrap`
[INFO] [stderr]   --> src/error_handling/index.rs:19:4
[INFO] [stderr]    |
[INFO] [stderr] 19 | fn drink_with_unwrap(drink: Option<&str>) {
[INFO] [stderr]    |    ^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: struct is never constructed: `Person`
[INFO] [stderr]   --> src/error_handling/index.rs:35:8
[INFO] [stderr]    |
[INFO] [stderr] 35 | struct Person {
[INFO] [stderr]    |        ^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: field is never read: `phone_number`
[INFO] [stderr]   --> src/error_handling/index.rs:41:5
[INFO] [stderr]    |
[INFO] [stderr] 41 |     phone_number: Option<PhoneNumber>,
[INFO] [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: field is never read: `area_code`
[INFO] [stderr]   --> src/error_handling/index.rs:46:5
[INFO] [stderr]    |
[INFO] [stderr] 46 |     area_code: Option<u8>,
[INFO] [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: field is never read: `number`
[INFO] [stderr]   --> src/error_handling/index.rs:47:5
[INFO] [stderr]    |
[INFO] [stderr] 47 |     number: u32,
[INFO] [stderr]    |     ^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: associated function is never used: `work_phone_area_code`
[INFO] [stderr]   --> src/error_handling/index.rs:51:8
[INFO] [stderr]    |
[INFO] [stderr] 51 |     fn work_phone_area_code(&self) -> Option<u8> {
[INFO] [stderr]    |        ^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: function is never used: `test`
[INFO] [stderr]   --> src/error_handling/index.rs:56:4
[INFO] [stderr]    |
[INFO] [stderr] 56 | fn test() {
[INFO] [stderr]    |    ^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: `hello_app` (bin "hello_app" test) generated 48 warnings
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 0.08s
[INFO] [stderr]      Running unittests (/opt/rustwide/target/debug/deps/hello_app-1e87a0390e9955df)
[INFO] [stdout] 
[INFO] [stdout] running 0 tests
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 0 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out; finished in 0.00s
[INFO] [stdout] 
[INFO] running `Command { std: "docker" "inspect" "31071930e73367882adb6f98bc6fb48cf7ac5cc7d89a6eae0d654c43d9e009ec", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "31071930e73367882adb6f98bc6fb48cf7ac5cc7d89a6eae0d654c43d9e009ec", kill_on_drop: false }`
[INFO] [stdout] 31071930e73367882adb6f98bc6fb48cf7ac5cc7d89a6eae0d654c43d9e009ec