[INFO] cloning repository https://github.com/Medsko/study-crate
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/Medsko/study-crate" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FMedsko%2Fstudy-crate", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FMedsko%2Fstudy-crate'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] a11285a06e1b2a2e0b07f581d6e672072c061222
[INFO] testing Medsko/study-crate against beta-2023-04-20 for beta-1.70-1
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FMedsko%2Fstudy-crate" "/workspace/builds/worker-1-tc2/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-1-tc2/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/Medsko/study-crate on toolchain beta-2023-04-20
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+beta-2023-04-20" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/Medsko/study-crate
[INFO] finished tweaking git repo https://github.com/Medsko/study-crate
[INFO] tweaked toml for git repo https://github.com/Medsko/study-crate written to /workspace/builds/worker-1-tc2/source/Cargo.toml
[INFO] crate git repo https://github.com/Medsko/study-crate 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" "+beta-2023-04-20" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr] warning: unused manifest key: package.licence
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-1-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-1-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@sha256:5ff2268d62e97bff2cde7d5815dd6ed5b47097566f13b8d0ca110b04b60e07ed" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2023-04-20" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] e7b957911c5bdb93285245d42f5a83545eca606f2b075ee3c3129baa82d01b0c
[INFO] running `Command { std: "docker" "start" "-a" "e7b957911c5bdb93285245d42f5a83545eca606f2b075ee3c3129baa82d01b0c", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "e7b957911c5bdb93285245d42f5a83545eca606f2b075ee3c3129baa82d01b0c", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "e7b957911c5bdb93285245d42f5a83545eca606f2b075ee3c3129baa82d01b0c", kill_on_drop: false }`
[INFO] [stdout] e7b957911c5bdb93285245d42f5a83545eca606f2b075ee3c3129baa82d01b0c
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-1-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-1-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=warn" "-e" "RUSTDOCFLAGS=--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@sha256:5ff2268d62e97bff2cde7d5815dd6ed5b47097566f13b8d0ca110b04b60e07ed" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2023-04-20" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] c58d3b7b99193ea5a758cce4c1f69beee5e30014d1020e5eb507352537319835
[INFO] running `Command { std: "docker" "start" "-a" "c58d3b7b99193ea5a758cce4c1f69beee5e30014d1020e5eb507352537319835", kill_on_drop: false }`
[INFO] [stderr] warning: unused manifest key: package.licence
[INFO] [stderr]    Compiling libc v0.2.74
[INFO] [stderr]    Compiling getrandom v0.1.14
[INFO] [stderr]    Compiling cfg-if v0.1.10
[INFO] [stderr]    Compiling ppv-lite86 v0.2.8
[INFO] [stderr]    Compiling rand_core v0.5.1
[INFO] [stderr]    Compiling rand_chacha v0.2.2
[INFO] [stderr]    Compiling rand v0.7.3
[INFO] [stderr]    Compiling study-crate v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: function `exercise` is never used
[INFO] [stdout]  --> src/collections/exercises.rs:7:8
[INFO] [stdout]   |
[INFO] [stdout] 7 | pub fn exercise() {
[INFO] [stdout]   |        ^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `employee_registration` is never used
[INFO] [stdout]   --> src/collections/exercises.rs:35:8
[INFO] [stdout]    |
[INFO] [stdout] 35 | pub fn employee_registration() {
[INFO] [stdout]    |        ^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `remove_employee` is never used
[INFO] [stdout]   --> src/collections/exercises.rs:70:4
[INFO] [stdout]    |
[INFO] [stdout] 70 | fn remove_employee(register: &mut HashMap<String, Vec<String>>, other_words: &mut SplitWhitespace) {
[INFO] [stdout]    |    ^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `extract_full_name` is never used
[INFO] [stdout]   --> src/collections/exercises.rs:90:4
[INFO] [stdout]    |
[INFO] [stdout] 90 | fn extract_full_name(words: &mut SplitWhitespace, stop: &str) -> Result<String, String> {
[INFO] [stdout]    |    ^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `register_employee` is never used
[INFO] [stdout]    --> src/collections/exercises.rs:108:4
[INFO] [stdout]     |
[INFO] [stdout] 108 | fn register_employee(register: &mut HashMap<String, Vec<String>>, other_words: &mut SplitWhitespace) {
[INFO] [stdout]     |    ^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `print_register` is never used
[INFO] [stdout]    --> src/collections/exercises.rs:119:4
[INFO] [stdout]     |
[INFO] [stdout] 119 | fn print_register(register: &HashMap<String, Vec<String>>) {
[INFO] [stdout]     |    ^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `hash_it_up` is never used
[INFO] [stdout]  --> src/collections/hashmaps.rs:3:8
[INFO] [stdout]   |
[INFO] [stdout] 3 | pub fn hash_it_up() {
[INFO] [stdout]   |        ^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `string_stuff` is never used
[INFO] [stdout]  --> src/collections/strings.rs:2:8
[INFO] [stdout]   |
[INFO] [stdout] 2 | pub fn string_stuff() {
[INFO] [stdout]   |        ^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `got_game` is never used
[INFO] [stdout]   --> src/collections/strings.rs:22:4
[INFO] [stdout]    |
[INFO] [stdout] 22 | fn got_game() -> String {
[INFO] [stdout]    |    ^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `to_pig_latin` is never used
[INFO] [stdout]   --> src/collections/strings.rs:33:8
[INFO] [stdout]    |
[INFO] [stdout] 33 | pub fn to_pig_latin(kosher: &String) -> String {
[INFO] [stdout]    |        ^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `is_vowel` is never used
[INFO] [stdout]   --> src/collections/strings.rs:53:4
[INFO] [stdout]    |
[INFO] [stdout] 53 | fn is_vowel(maybe_vowel: &char) -> bool {
[INFO] [stdout]    |    ^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct `Guess` is never constructed
[INFO] [stdout]  --> src/prepackages/gg.rs:6:8
[INFO] [stdout]   |
[INFO] [stdout] 6 | struct Guess {
[INFO] [stdout]   |        ^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated items `new` and `value` are never used
[INFO] [stdout]   --> src/prepackages/gg.rs:11:12
[INFO] [stdout]    |
[INFO] [stdout] 10 | impl Guess {
[INFO] [stdout]    | ---------- associated items in this implementation
[INFO] [stdout] 11 |     pub fn new(value: i32) -> Guess {
[INFO] [stdout]    |            ^^^
[INFO] [stdout] ...
[INFO] [stdout] 19 |     pub fn value(&self) -> i32 {
[INFO] [stdout]    |            ^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `play_the_guessing_game` is never used
[INFO] [stdout]   --> src/prepackages/gg.rs:24:8
[INFO] [stdout]    |
[INFO] [stdout] 24 | pub fn play_the_guessing_game() {
[INFO] [stdout]    |        ^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `own` is never used
[INFO] [stdout]  --> src/prepackages/ownership.rs:2:8
[INFO] [stdout]   |
[INFO] [stdout] 2 | pub fn own() {
[INFO] [stdout]   |        ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `takes_ownership` is never used
[INFO] [stdout]   --> src/prepackages/ownership.rs:47:4
[INFO] [stdout]    |
[INFO] [stdout] 47 | fn takes_ownership(val: String) {
[INFO] [stdout]    |    ^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `makes_copy` is never used
[INFO] [stdout]   --> src/prepackages/ownership.rs:51:4
[INFO] [stdout]    |
[INFO] [stdout] 51 | fn makes_copy(number: i32) {
[INFO] [stdout]    |    ^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `references_and_borrowing` is never used
[INFO] [stdout]   --> src/prepackages/ownership.rs:56:4
[INFO] [stdout]    |
[INFO] [stdout] 56 | fn references_and_borrowing() {
[INFO] [stdout]    |    ^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `calculate_length` is never used
[INFO] [stdout]   --> src/prepackages/ownership.rs:87:4
[INFO] [stdout]    |
[INFO] [stdout] 87 | fn calculate_length(s: &String) -> usize {
[INFO] [stdout]    |    ^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `string_to_length` is never used
[INFO] [stdout]   --> src/prepackages/ownership.rs:91:4
[INFO] [stdout]    |
[INFO] [stdout] 91 | fn string_to_length(s: String) -> usize {
[INFO] [stdout]    |    ^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `print_length` is never used
[INFO] [stdout]   --> src/prepackages/ownership.rs:95:4
[INFO] [stdout]    |
[INFO] [stdout] 95 | fn print_length(s: &String) {
[INFO] [stdout]    |    ^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `legalized_modification` is never used
[INFO] [stdout]    --> src/prepackages/ownership.rs:103:4
[INFO] [stdout]     |
[INFO] [stdout] 103 | fn legalized_modification(s: &mut String) {
[INFO] [stdout]     |    ^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `slice_stuff` is never used
[INFO] [stdout]    --> src/prepackages/ownership.rs:108:4
[INFO] [stdout]     |
[INFO] [stdout] 108 | fn slice_stuff() {
[INFO] [stdout]     |    ^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `slice_first_word` is never used
[INFO] [stdout]    --> src/prepackages/ownership.rs:124:4
[INFO] [stdout]     |
[INFO] [stdout] 124 | fn slice_first_word(s: &String) -> &str {
[INFO] [stdout]     |    ^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `first_word` is never used
[INFO] [stdout]    --> src/prepackages/ownership.rs:140:4
[INFO] [stdout]     |
[INFO] [stdout] 140 | fn first_word(s: &String) -> usize {
[INFO] [stdout]     |    ^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct `User` is never constructed
[INFO] [stdout]  --> src/prepackages/structs.rs:2:8
[INFO] [stdout]   |
[INFO] [stdout] 2 | struct User {
[INFO] [stdout]   |        ^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct `Color` is never constructed
[INFO] [stdout]  --> src/prepackages/structs.rs:9:8
[INFO] [stdout]   |
[INFO] [stdout] 9 | struct Color(i32, i32, i32);
[INFO] [stdout]   |        ^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct `Point` is never constructed
[INFO] [stdout]   --> src/prepackages/structs.rs:10:8
[INFO] [stdout]    |
[INFO] [stdout] 10 | struct Point(i32, i32, i32);
[INFO] [stdout]    |        ^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `structure` is never used
[INFO] [stdout]   --> src/prepackages/structs.rs:12:8
[INFO] [stdout]    |
[INFO] [stdout] 12 | pub fn structure() {
[INFO] [stdout]    |        ^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `first_structs` is never used
[INFO] [stdout]   --> src/prepackages/structs.rs:19:4
[INFO] [stdout]    |
[INFO] [stdout] 19 | fn first_structs() {
[INFO] [stdout]    |    ^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `build_user` is never used
[INFO] [stdout]   --> src/prepackages/structs.rs:39:4
[INFO] [stdout]    |
[INFO] [stdout] 39 | fn build_user(email: String, username1: String) -> User {
[INFO] [stdout]    |    ^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: fields `width` and `height` are never read
[INFO] [stdout]   --> src/prepackages/structs.rs:50:5
[INFO] [stdout]    |
[INFO] [stdout] 49 | struct Rectangle {
[INFO] [stdout]    |        --------- fields in this struct
[INFO] [stdout] 50 |     width: u32,
[INFO] [stdout]    |     ^^^^^
[INFO] [stdout] 51 |     height: u32,
[INFO] [stdout]    |     ^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `Rectangle` has a derived impl for the trait `Debug`, but this is intentionally ignored during dead code analysis
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field `diameter` is never read
[INFO] [stdout]   --> src/prepackages/structs.rs:56:5
[INFO] [stdout]    |
[INFO] [stdout] 55 | struct Circle {
[INFO] [stdout]    |        ------ field in this struct
[INFO] [stdout] 56 |     diameter: u32
[INFO] [stdout]    |     ^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `Circle` has a derived impl for the trait `Debug`, but this is intentionally ignored during dead code analysis
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: multiple associated items are never used
[INFO] [stdout]   --> src/prepackages/structs.rs:61:8
[INFO] [stdout]    |
[INFO] [stdout] 59 | impl Rectangle {
[INFO] [stdout]    | -------------- associated items in this implementation
[INFO] [stdout] 60 |
[INFO] [stdout] 61 |     fn area(&self) -> u32 {
[INFO] [stdout]    |        ^^^^
[INFO] [stdout] ...
[INFO] [stdout] 65 |     fn longest_side(&self) -> u32 {
[INFO] [stdout]    |        ^^^^^^^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 72 |     fn is_square(&self) -> bool {
[INFO] [stdout]    |        ^^^^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 77 |     fn transform_to_circle(self) -> Circle {
[INFO] [stdout]    |        ^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 81 |     fn can_hold(&self, other: &Rectangle) -> bool {
[INFO] [stdout]    |        ^^^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 85 |     fn stretch(&mut self, add_height: u32, add_width: u32) {
[INFO] [stdout]    |        ^^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 91 |     fn square(size: u32) -> Rectangle {
[INFO] [stdout]    |        ^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: method `shrink` is never used
[INFO] [stdout]    --> src/prepackages/structs.rs:101:8
[INFO] [stdout]     |
[INFO] [stdout] 100 | impl Rectangle {
[INFO] [stdout]     | -------------- method in this implementation
[INFO] [stdout] 101 |     fn shrink(&mut self, take_height: u32, take_width: u32) {
[INFO] [stdout]     |        ^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `rectangles` is never used
[INFO] [stdout]    --> src/prepackages/structs.rs:107:4
[INFO] [stdout]     |
[INFO] [stdout] 107 | fn rectangles() {
[INFO] [stdout]     |    ^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `area` is never used
[INFO] [stdout]    --> src/prepackages/structs.rs:131:4
[INFO] [stdout]     |
[INFO] [stdout] 131 | fn area(rectangle: &Rectangle) -> u32 {
[INFO] [stdout]     |    ^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `variate` is never used
[INFO] [stdout]  --> src/prepackages/variables.rs:2:8
[INFO] [stdout]   |
[INFO] [stdout] 2 | pub fn variate() {
[INFO] [stdout]   |        ^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `function_stuff` is never used
[INFO] [stdout]   --> src/prepackages/variables.rs:44:4
[INFO] [stdout]    |
[INFO] [stdout] 44 | fn function_stuff() -> i32 {
[INFO] [stdout]    |    ^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `returns_one` is never used
[INFO] [stdout]   --> src/prepackages/variables.rs:56:4
[INFO] [stdout]    |
[INFO] [stdout] 56 | fn returns_one() -> i32 {
[INFO] [stdout]    |    ^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `fizz_buzz` is never used
[INFO] [stdout]   --> src/prepackages/variables.rs:60:4
[INFO] [stdout]    |
[INFO] [stdout] 60 | fn fizz_buzz(x: i32) {
[INFO] [stdout]    |    ^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `loop_return` is never used
[INFO] [stdout]   --> src/prepackages/variables.rs:71:4
[INFO] [stdout]    |
[INFO] [stdout] 71 | fn loop_return(x: i32) -> i32 {
[INFO] [stdout]    |    ^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `countdown` is never used
[INFO] [stdout]   --> src/prepackages/variables.rs:81:4
[INFO] [stdout]    |
[INFO] [stdout] 81 | fn countdown(loops: i32) {
[INFO] [stdout]    |    ^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `for_loop` is never used
[INFO] [stdout]   --> src/prepackages/variables.rs:90:4
[INFO] [stdout]    |
[INFO] [stdout] 90 | fn for_loop(placement: i32) {
[INFO] [stdout]    |    ^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `range_for_loop` is never used
[INFO] [stdout]   --> src/prepackages/variables.rs:98:4
[INFO] [stdout]    |
[INFO] [stdout] 98 | fn range_for_loop(until: i32) {
[INFO] [stdout]    |    ^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `reverse_range_for_loop` is never used
[INFO] [stdout]    --> src/prepackages/variables.rs:104:4
[INFO] [stdout]     |
[INFO] [stdout] 104 | fn reverse_range_for_loop(from: i32) {
[INFO] [stdout]     |    ^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variants `V4` and `V6` are never constructed
[INFO] [stdout]  --> src/prepackages/enums/enums.rs:6:5
[INFO] [stdout]   |
[INFO] [stdout] 5 | enum IpAddrKind {
[INFO] [stdout]   |      ---------- variants in this enum
[INFO] [stdout] 6 |     V4,
[INFO] [stdout]   |     ^^
[INFO] [stdout] 7 |     V6
[INFO] [stdout]   |     ^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `IpAddrKind` has a derived impl for the trait `Debug`, but this is intentionally ignored during dead code analysis
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: enum `ConciseIpAddr` is never used
[INFO] [stdout]   --> src/prepackages/enums/enums.rs:10:6
[INFO] [stdout]    |
[INFO] [stdout] 10 | enum ConciseIpAddr {
[INFO] [stdout]    |      ^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: method `call` is never used
[INFO] [stdout]   --> src/prepackages/enums/enums.rs:25:8
[INFO] [stdout]    |
[INFO] [stdout] 24 | impl Message {
[INFO] [stdout]    | ------------ method in this implementation
[INFO] [stdout] 25 |     fn call(&self) {
[INFO] [stdout]    |        ^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: fields `kind` and `address` are never read
[INFO] [stdout]   --> src/prepackages/enums/enums.rs:38:5
[INFO] [stdout]    |
[INFO] [stdout] 37 | struct IpAddr {
[INFO] [stdout]    |        ------ fields in this struct
[INFO] [stdout] 38 |     kind: IpAddrKind,
[INFO] [stdout]    |     ^^^^
[INFO] [stdout] 39 |     address: String,
[INFO] [stdout]    |     ^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `IpAddr` has a derived impl for the trait `Debug`, but this is intentionally ignored during dead code analysis
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `enumerate` is never used
[INFO] [stdout]   --> src/prepackages/enums/enums.rs:42:8
[INFO] [stdout]    |
[INFO] [stdout] 42 | pub fn enumerate() {
[INFO] [stdout]    |        ^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variants `Alabama`, `Alaska`, and `Oregon` are never constructed
[INFO] [stdout]  --> src/prepackages/enums/matching.rs:4:5
[INFO] [stdout]   |
[INFO] [stdout] 3 | enum UsState {
[INFO] [stdout]   |      ------- variants in this enum
[INFO] [stdout] 4 |     Alabama,
[INFO] [stdout]   |     ^^^^^^^
[INFO] [stdout] 5 |     Alaska,
[INFO] [stdout]   |     ^^^^^^
[INFO] [stdout] 6 |     Oregon,
[INFO] [stdout]   |     ^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `UsState` has a derived impl for the trait `Debug`, but this is intentionally ignored during dead code analysis
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: enum `Coin` is never used
[INFO] [stdout]  --> src/prepackages/enums/matching.rs:9:6
[INFO] [stdout]   |
[INFO] [stdout] 9 | enum Coin {
[INFO] [stdout]   |      ^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: method `value_in_cents` is never used
[INFO] [stdout]   --> src/prepackages/enums/matching.rs:17:8
[INFO] [stdout]    |
[INFO] [stdout] 16 | impl Coin {
[INFO] [stdout]    | --------- method in this implementation
[INFO] [stdout] 17 |     fn value_in_cents(&self) -> u8 {
[INFO] [stdout]    |        ^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `match_stuff` is never used
[INFO] [stdout]   --> src/prepackages/enums/matching.rs:33:8
[INFO] [stdout]    |
[INFO] [stdout] 33 | pub fn match_stuff() {
[INFO] [stdout]    |        ^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `find_someone` is never used
[INFO] [stdout]   --> src/prepackages/enums/matching.rs:41:4
[INFO] [stdout]    |
[INFO] [stdout] 41 | fn find_someone(optionals: &[Option<i32>]) {
[INFO] [stdout]    |    ^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `plus_one` is never used
[INFO] [stdout]   --> src/prepackages/enums/matching.rs:49:4
[INFO] [stdout]    |
[INFO] [stdout] 49 | fn plus_one(x: Option<i32>) -> Option<i32> {
[INFO] [stdout]    |    ^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `options` is never used
[INFO] [stdout]  --> src/prepackages/enums/options.rs:2:8
[INFO] [stdout]   |
[INFO] [stdout] 2 | pub fn options() {
[INFO] [stdout]   |        ^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 58 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 5.61s
[INFO] running `Command { std: "docker" "inspect" "c58d3b7b99193ea5a758cce4c1f69beee5e30014d1020e5eb507352537319835", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "c58d3b7b99193ea5a758cce4c1f69beee5e30014d1020e5eb507352537319835", kill_on_drop: false }`
[INFO] [stdout] c58d3b7b99193ea5a758cce4c1f69beee5e30014d1020e5eb507352537319835
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-1-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-1-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=warn" "-e" "RUSTDOCFLAGS=--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@sha256:5ff2268d62e97bff2cde7d5815dd6ed5b47097566f13b8d0ca110b04b60e07ed" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2023-04-20" "test" "--frozen" "--no-run" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 3e38c9cafffe204368f4caa2962e06be02440f49d4a61cf87d61c2202bcec4d4
[INFO] running `Command { std: "docker" "start" "-a" "3e38c9cafffe204368f4caa2962e06be02440f49d4a61cf87d61c2202bcec4d4", kill_on_drop: false }`
[INFO] [stderr] warning: unused manifest key: package.licence
[INFO] [stdout] warning: function `exercise` is never used
[INFO] [stdout]  --> src/collections/exercises.rs:7:8
[INFO] [stdout]   |
[INFO] [stdout] 7 | pub fn exercise() {
[INFO] [stdout]   |        ^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `employee_registration` is never used
[INFO] [stdout]   --> src/collections/exercises.rs:35:8
[INFO] [stdout]    |
[INFO] [stdout] 35 | pub fn employee_registration() {
[INFO] [stdout]    |        ^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `remove_employee` is never used
[INFO] [stdout]   --> src/collections/exercises.rs:70:4
[INFO] [stdout]    |
[INFO] [stdout] 70 | fn remove_employee(register: &mut HashMap<String, Vec<String>>, other_words: &mut SplitWhitespace) {
[INFO] [stdout]    |    ^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `extract_full_name` is never used
[INFO] [stdout]   --> src/collections/exercises.rs:90:4
[INFO] [stdout]    |
[INFO] [stdout] 90 | fn extract_full_name(words: &mut SplitWhitespace, stop: &str) -> Result<String, String> {
[INFO] [stdout]    |    ^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `register_employee` is never used
[INFO] [stdout]    --> src/collections/exercises.rs:108:4
[INFO] [stdout]     |
[INFO] [stdout] 108 | fn register_employee(register: &mut HashMap<String, Vec<String>>, other_words: &mut SplitWhitespace) {
[INFO] [stdout]     |    ^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `print_register` is never used
[INFO] [stdout]    --> src/collections/exercises.rs:119:4
[INFO] [stdout]     |
[INFO] [stdout] 119 | fn print_register(register: &HashMap<String, Vec<String>>) {
[INFO] [stdout]     |    ^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `hash_it_up` is never used
[INFO] [stdout]  --> src/collections/hashmaps.rs:3:8
[INFO] [stdout]   |
[INFO] [stdout] 3 | pub fn hash_it_up() {
[INFO] [stdout]   |        ^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `string_stuff` is never used
[INFO] [stdout]  --> src/collections/strings.rs:2:8
[INFO] [stdout]   |
[INFO] [stdout] 2 | pub fn string_stuff() {
[INFO] [stdout]   |        ^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `got_game` is never used
[INFO] [stdout]   --> src/collections/strings.rs:22:4
[INFO] [stdout]    |
[INFO] [stdout] 22 | fn got_game() -> String {
[INFO] [stdout]    |    ^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `to_pig_latin` is never used
[INFO] [stdout]   --> src/collections/strings.rs:33:8
[INFO] [stdout]    |
[INFO] [stdout] 33 | pub fn to_pig_latin(kosher: &String) -> String {
[INFO] [stdout]    |        ^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `is_vowel` is never used
[INFO] [stdout]   --> src/collections/strings.rs:53:4
[INFO] [stdout]    |
[INFO] [stdout] 53 | fn is_vowel(maybe_vowel: &char) -> bool {
[INFO] [stdout]    |    ^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct `Guess` is never constructed
[INFO] [stdout]  --> src/prepackages/gg.rs:6:8
[INFO] [stdout]   |
[INFO] [stdout] 6 | struct Guess {
[INFO] [stdout]   |        ^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated items `new` and `value` are never used
[INFO] [stdout]   --> src/prepackages/gg.rs:11:12
[INFO] [stdout]    |
[INFO] [stdout] 10 | impl Guess {
[INFO] [stdout]    | ---------- associated items in this implementation
[INFO] [stdout] 11 |     pub fn new(value: i32) -> Guess {
[INFO] [stdout]    |            ^^^
[INFO] [stdout] ...
[INFO] [stdout] 19 |     pub fn value(&self) -> i32 {
[INFO] [stdout]    |            ^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `play_the_guessing_game` is never used
[INFO] [stdout]   --> src/prepackages/gg.rs:24:8
[INFO] [stdout]    |
[INFO] [stdout] 24 | pub fn play_the_guessing_game() {
[INFO] [stdout]    |        ^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `own` is never used
[INFO] [stdout]  --> src/prepackages/ownership.rs:2:8
[INFO] [stdout]   |
[INFO] [stdout] 2 | pub fn own() {
[INFO] [stdout]   |        ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `takes_ownership` is never used
[INFO] [stdout]   --> src/prepackages/ownership.rs:47:4
[INFO] [stdout]    |
[INFO] [stdout] 47 | fn takes_ownership(val: String) {
[INFO] [stdout]    |    ^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `makes_copy` is never used
[INFO] [stdout]   --> src/prepackages/ownership.rs:51:4
[INFO] [stdout]    |
[INFO] [stdout] 51 | fn makes_copy(number: i32) {
[INFO] [stdout]    |    ^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `references_and_borrowing` is never used
[INFO] [stdout]   --> src/prepackages/ownership.rs:56:4
[INFO] [stdout]    |
[INFO] [stdout] 56 | fn references_and_borrowing() {
[INFO] [stdout]    |    ^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `calculate_length` is never used
[INFO] [stdout]   --> src/prepackages/ownership.rs:87:4
[INFO] [stdout]    |
[INFO] [stdout] 87 | fn calculate_length(s: &String) -> usize {
[INFO] [stdout]    |    ^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `string_to_length` is never used
[INFO] [stdout]   --> src/prepackages/ownership.rs:91:4
[INFO] [stdout]    |
[INFO] [stdout] 91 | fn string_to_length(s: String) -> usize {
[INFO] [stdout]    |    ^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `print_length` is never used
[INFO] [stdout]   --> src/prepackages/ownership.rs:95:4
[INFO] [stdout]    |
[INFO] [stdout] 95 | fn print_length(s: &String) {
[INFO] [stdout]    |    ^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `legalized_modification` is never used
[INFO] [stdout]    --> src/prepackages/ownership.rs:103:4
[INFO] [stdout]     |
[INFO] [stdout] 103 | fn legalized_modification(s: &mut String) {
[INFO] [stdout]     |    ^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `slice_stuff` is never used
[INFO] [stdout]    --> src/prepackages/ownership.rs:108:4
[INFO] [stdout]     |
[INFO] [stdout] 108 | fn slice_stuff() {
[INFO] [stdout]     |    ^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `slice_first_word` is never used
[INFO] [stdout]    --> src/prepackages/ownership.rs:124:4
[INFO] [stdout]     |
[INFO] [stdout] 124 | fn slice_first_word(s: &String) -> &str {
[INFO] [stdout]     |    ^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `first_word` is never used
[INFO] [stdout]    --> src/prepackages/ownership.rs:140:4
[INFO] [stdout]     |
[INFO] [stdout] 140 | fn first_word(s: &String) -> usize {
[INFO] [stdout]     |    ^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct `User` is never constructed
[INFO] [stdout]  --> src/prepackages/structs.rs:2:8
[INFO] [stdout]   |
[INFO] [stdout] 2 | struct User {
[INFO] [stdout]   |        ^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct `Color` is never constructed
[INFO] [stdout]  --> src/prepackages/structs.rs:9:8
[INFO] [stdout]   |
[INFO] [stdout] 9 | struct Color(i32, i32, i32);
[INFO] [stdout]   |        ^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct `Point` is never constructed
[INFO] [stdout]   --> src/prepackages/structs.rs:10:8
[INFO] [stdout]    |
[INFO] [stdout] 10 | struct Point(i32, i32, i32);
[INFO] [stdout]    |        ^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `structure` is never used
[INFO] [stdout]   --> src/prepackages/structs.rs:12:8
[INFO] [stdout]    |
[INFO] [stdout] 12 | pub fn structure() {
[INFO] [stdout]    |        ^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `first_structs` is never used
[INFO] [stdout]   --> src/prepackages/structs.rs:19:4
[INFO] [stdout]    |
[INFO] [stdout] 19 | fn first_structs() {
[INFO] [stdout]    |    ^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `build_user` is never used
[INFO] [stdout]   --> src/prepackages/structs.rs:39:4
[INFO] [stdout]    |
[INFO] [stdout] 39 | fn build_user(email: String, username1: String) -> User {
[INFO] [stdout]    |    ^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: fields `width` and `height` are never read
[INFO] [stdout]   --> src/prepackages/structs.rs:50:5
[INFO] [stdout]    |
[INFO] [stdout] 49 | struct Rectangle {
[INFO] [stdout]    |        --------- fields in this struct
[INFO] [stdout] 50 |     width: u32,
[INFO] [stdout]    |     ^^^^^
[INFO] [stdout] 51 |     height: u32,
[INFO] [stdout]    |     ^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `Rectangle` has a derived impl for the trait `Debug`, but this is intentionally ignored during dead code analysis
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field `diameter` is never read
[INFO] [stdout]   --> src/prepackages/structs.rs:56:5
[INFO] [stdout]    |
[INFO] [stdout] 55 | struct Circle {
[INFO] [stdout]    |        ------ field in this struct
[INFO] [stdout] 56 |     diameter: u32
[INFO] [stdout]    |     ^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `Circle` has a derived impl for the trait `Debug`, but this is intentionally ignored during dead code analysis
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: multiple associated items are never used
[INFO] [stdout]   --> src/prepackages/structs.rs:61:8
[INFO] [stdout]    |
[INFO] [stdout] 59 | impl Rectangle {
[INFO] [stdout]    | -------------- associated items in this implementation
[INFO] [stdout] 60 |
[INFO] [stdout] 61 |     fn area(&self) -> u32 {
[INFO] [stdout]    |        ^^^^
[INFO] [stdout] ...
[INFO] [stdout] 65 |     fn longest_side(&self) -> u32 {
[INFO] [stdout]    |        ^^^^^^^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 72 |     fn is_square(&self) -> bool {
[INFO] [stdout]    |        ^^^^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 77 |     fn transform_to_circle(self) -> Circle {
[INFO] [stdout]    |        ^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 81 |     fn can_hold(&self, other: &Rectangle) -> bool {
[INFO] [stdout]    |        ^^^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 85 |     fn stretch(&mut self, add_height: u32, add_width: u32) {
[INFO] [stdout]    |        ^^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 91 |     fn square(size: u32) -> Rectangle {
[INFO] [stdout]    |        ^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: method `shrink` is never used
[INFO] [stdout]    --> src/prepackages/structs.rs:101:8
[INFO] [stdout]     |
[INFO] [stdout] 100 | impl Rectangle {
[INFO] [stdout]     | -------------- method in this implementation
[INFO] [stdout] 101 |     fn shrink(&mut self, take_height: u32, take_width: u32) {
[INFO] [stdout]     |        ^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `rectangles` is never used
[INFO] [stdout]    --> src/prepackages/structs.rs:107:4
[INFO] [stdout]     |
[INFO] [stdout] 107 | fn rectangles() {
[INFO] [stdout]     |    ^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `area` is never used
[INFO] [stdout]    --> src/prepackages/structs.rs:131:4
[INFO] [stdout]     |
[INFO] [stdout] 131 | fn area(rectangle: &Rectangle) -> u32 {
[INFO] [stdout]     |    ^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `variate` is never used
[INFO] [stdout]  --> src/prepackages/variables.rs:2:8
[INFO] [stdout]   |
[INFO] [stdout] 2 | pub fn variate() {
[INFO] [stdout]   |        ^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `function_stuff` is never used
[INFO] [stdout]   --> src/prepackages/variables.rs:44:4
[INFO] [stdout]    |
[INFO] [stdout] 44 | fn function_stuff() -> i32 {
[INFO] [stdout]    |    ^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `returns_one` is never used
[INFO] [stdout]   --> src/prepackages/variables.rs:56:4
[INFO] [stdout]    |
[INFO] [stdout] 56 | fn returns_one() -> i32 {
[INFO] [stdout]    |    ^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `fizz_buzz` is never used
[INFO] [stdout]   --> src/prepackages/variables.rs:60:4
[INFO] [stdout]    |
[INFO] [stdout] 60 | fn fizz_buzz(x: i32) {
[INFO] [stdout]    |    ^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `loop_return` is never used
[INFO] [stdout]   --> src/prepackages/variables.rs:71:4
[INFO] [stdout]    |
[INFO] [stdout] 71 | fn loop_return(x: i32) -> i32 {
[INFO] [stdout]    |    ^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `countdown` is never used
[INFO] [stdout]   --> src/prepackages/variables.rs:81:4
[INFO] [stdout]    |
[INFO] [stdout] 81 | fn countdown(loops: i32) {
[INFO] [stdout]    |    ^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `for_loop` is never used
[INFO] [stdout]   --> src/prepackages/variables.rs:90:4
[INFO] [stdout]    |
[INFO] [stdout] 90 | fn for_loop(placement: i32) {
[INFO] [stdout]    |    ^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `range_for_loop` is never used
[INFO] [stdout]   --> src/prepackages/variables.rs:98:4
[INFO] [stdout]    |
[INFO] [stdout] 98 | fn range_for_loop(until: i32) {
[INFO] [stdout]    |    ^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `reverse_range_for_loop` is never used
[INFO] [stdout]    --> src/prepackages/variables.rs:104:4
[INFO] [stdout]     |
[INFO] [stdout] 104 | fn reverse_range_for_loop(from: i32) {
[INFO] [stdout]     |    ^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variants `V4` and `V6` are never constructed
[INFO] [stdout]  --> src/prepackages/enums/enums.rs:6:5
[INFO] [stdout]   |
[INFO] [stdout] 5 | enum IpAddrKind {
[INFO] [stdout]   |      ---------- variants in this enum
[INFO] [stdout] 6 |     V4,
[INFO] [stdout]   |     ^^
[INFO] [stdout] 7 |     V6
[INFO] [stdout]   |     ^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `IpAddrKind` has a derived impl for the trait `Debug`, but this is intentionally ignored during dead code analysis
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: enum `ConciseIpAddr` is never used
[INFO] [stdout]   --> src/prepackages/enums/enums.rs:10:6
[INFO] [stdout]    |
[INFO] [stdout] 10 | enum ConciseIpAddr {
[INFO] [stdout]    |      ^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: method `call` is never used
[INFO] [stdout]   --> src/prepackages/enums/enums.rs:25:8
[INFO] [stdout]    |
[INFO] [stdout] 24 | impl Message {
[INFO] [stdout]    | ------------ method in this implementation
[INFO] [stdout] 25 |     fn call(&self) {
[INFO] [stdout]    |        ^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: fields `kind` and `address` are never read
[INFO] [stdout]   --> src/prepackages/enums/enums.rs:38:5
[INFO] [stdout]    |
[INFO] [stdout] 37 | struct IpAddr {
[INFO] [stdout]    |        ------ fields in this struct
[INFO] [stdout] 38 |     kind: IpAddrKind,
[INFO] [stdout]    |     ^^^^
[INFO] [stdout] 39 |     address: String,
[INFO] [stdout]    |     ^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `IpAddr` has a derived impl for the trait `Debug`, but this is intentionally ignored during dead code analysis
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `enumerate` is never used
[INFO] [stdout]   --> src/prepackages/enums/enums.rs:42:8
[INFO] [stdout]    |
[INFO] [stdout] 42 | pub fn enumerate() {
[INFO] [stdout]    |        ^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variants `Alabama`, `Alaska`, and `Oregon` are never constructed
[INFO] [stdout]  --> src/prepackages/enums/matching.rs:4:5
[INFO] [stdout]   |
[INFO] [stdout] 3 | enum UsState {
[INFO] [stdout]   |      ------- variants in this enum
[INFO] [stdout] 4 |     Alabama,
[INFO] [stdout]   |     ^^^^^^^
[INFO] [stdout] 5 |     Alaska,
[INFO] [stdout]   |     ^^^^^^
[INFO] [stdout] 6 |     Oregon,
[INFO] [stdout]   |     ^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `UsState` has a derived impl for the trait `Debug`, but this is intentionally ignored during dead code analysis
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: enum `Coin` is never used
[INFO] [stdout]  --> src/prepackages/enums/matching.rs:9:6
[INFO] [stdout]   |
[INFO] [stdout] 9 | enum Coin {
[INFO] [stdout]   |      ^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: method `value_in_cents` is never used
[INFO] [stdout]   --> src/prepackages/enums/matching.rs:17:8
[INFO] [stdout]    |
[INFO] [stdout] 16 | impl Coin {
[INFO] [stdout]    | --------- method in this implementation
[INFO] [stdout] 17 |     fn value_in_cents(&self) -> u8 {
[INFO] [stdout]    |        ^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `match_stuff` is never used
[INFO] [stdout]   --> src/prepackages/enums/matching.rs:33:8
[INFO] [stdout]    |
[INFO] [stdout] 33 | pub fn match_stuff() {
[INFO] [stdout]    |        ^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `find_someone` is never used
[INFO] [stdout]   --> src/prepackages/enums/matching.rs:41:4
[INFO] [stdout]    |
[INFO] [stdout] 41 | fn find_someone(optionals: &[Option<i32>]) {
[INFO] [stdout]    |    ^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `plus_one` is never used
[INFO] [stdout]   --> src/prepackages/enums/matching.rs:49:4
[INFO] [stdout]    |
[INFO] [stdout] 49 | fn plus_one(x: Option<i32>) -> Option<i32> {
[INFO] [stdout]    |    ^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `options` is never used
[INFO] [stdout]  --> src/prepackages/enums/options.rs:2:8
[INFO] [stdout]   |
[INFO] [stdout] 2 | pub fn options() {
[INFO] [stdout]   |        ^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 58 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]    Compiling study-crate v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: function `exercise` is never used
[INFO] [stdout]  --> src/collections/exercises.rs:7:8
[INFO] [stdout]   |
[INFO] [stdout] 7 | pub fn exercise() {
[INFO] [stdout]   |        ^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `employee_registration` is never used
[INFO] [stdout]   --> src/collections/exercises.rs:35:8
[INFO] [stdout]    |
[INFO] [stdout] 35 | pub fn employee_registration() {
[INFO] [stdout]    |        ^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `remove_employee` is never used
[INFO] [stdout]   --> src/collections/exercises.rs:70:4
[INFO] [stdout]    |
[INFO] [stdout] 70 | fn remove_employee(register: &mut HashMap<String, Vec<String>>, other_words: &mut SplitWhitespace) {
[INFO] [stdout]    |    ^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `extract_full_name` is never used
[INFO] [stdout]   --> src/collections/exercises.rs:90:4
[INFO] [stdout]    |
[INFO] [stdout] 90 | fn extract_full_name(words: &mut SplitWhitespace, stop: &str) -> Result<String, String> {
[INFO] [stdout]    |    ^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `register_employee` is never used
[INFO] [stdout]    --> src/collections/exercises.rs:108:4
[INFO] [stdout]     |
[INFO] [stdout] 108 | fn register_employee(register: &mut HashMap<String, Vec<String>>, other_words: &mut SplitWhitespace) {
[INFO] [stdout]     |    ^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `print_register` is never used
[INFO] [stdout]    --> src/collections/exercises.rs:119:4
[INFO] [stdout]     |
[INFO] [stdout] 119 | fn print_register(register: &HashMap<String, Vec<String>>) {
[INFO] [stdout]     |    ^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `hash_it_up` is never used
[INFO] [stdout]  --> src/collections/hashmaps.rs:3:8
[INFO] [stdout]   |
[INFO] [stdout] 3 | pub fn hash_it_up() {
[INFO] [stdout]   |        ^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `string_stuff` is never used
[INFO] [stdout]  --> src/collections/strings.rs:2:8
[INFO] [stdout]   |
[INFO] [stdout] 2 | pub fn string_stuff() {
[INFO] [stdout]   |        ^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `got_game` is never used
[INFO] [stdout]   --> src/collections/strings.rs:22:4
[INFO] [stdout]    |
[INFO] [stdout] 22 | fn got_game() -> String {
[INFO] [stdout]    |    ^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field `value` is never read
[INFO] [stdout]  --> src/prepackages/gg.rs:7:5
[INFO] [stdout]   |
[INFO] [stdout] 6 | struct Guess {
[INFO] [stdout]   |        ----- field in this struct
[INFO] [stdout] 7 |     value: i32
[INFO] [stdout]   |     ^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: method `value` is never used
[INFO] [stdout]   --> src/prepackages/gg.rs:19:12
[INFO] [stdout]    |
[INFO] [stdout] 10 | impl Guess {
[INFO] [stdout]    | ---------- method in this implementation
[INFO] [stdout] ...
[INFO] [stdout] 19 |     pub fn value(&self) -> i32 {
[INFO] [stdout]    |            ^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `play_the_guessing_game` is never used
[INFO] [stdout]   --> src/prepackages/gg.rs:24:8
[INFO] [stdout]    |
[INFO] [stdout] 24 | pub fn play_the_guessing_game() {
[INFO] [stdout]    |        ^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `own` is never used
[INFO] [stdout]  --> src/prepackages/ownership.rs:2:8
[INFO] [stdout]   |
[INFO] [stdout] 2 | pub fn own() {
[INFO] [stdout]   |        ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `takes_ownership` is never used
[INFO] [stdout]   --> src/prepackages/ownership.rs:47:4
[INFO] [stdout]    |
[INFO] [stdout] 47 | fn takes_ownership(val: String) {
[INFO] [stdout]    |    ^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `makes_copy` is never used
[INFO] [stdout]   --> src/prepackages/ownership.rs:51:4
[INFO] [stdout]    |
[INFO] [stdout] 51 | fn makes_copy(number: i32) {
[INFO] [stdout]    |    ^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `references_and_borrowing` is never used
[INFO] [stdout]   --> src/prepackages/ownership.rs:56:4
[INFO] [stdout]    |
[INFO] [stdout] 56 | fn references_and_borrowing() {
[INFO] [stdout]    |    ^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `calculate_length` is never used
[INFO] [stdout]   --> src/prepackages/ownership.rs:87:4
[INFO] [stdout]    |
[INFO] [stdout] 87 | fn calculate_length(s: &String) -> usize {
[INFO] [stdout]    |    ^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `string_to_length` is never used
[INFO] [stdout]   --> src/prepackages/ownership.rs:91:4
[INFO] [stdout]    |
[INFO] [stdout] 91 | fn string_to_length(s: String) -> usize {
[INFO] [stdout]    |    ^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `print_length` is never used
[INFO] [stdout]   --> src/prepackages/ownership.rs:95:4
[INFO] [stdout]    |
[INFO] [stdout] 95 | fn print_length(s: &String) {
[INFO] [stdout]    |    ^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `legalized_modification` is never used
[INFO] [stdout]    --> src/prepackages/ownership.rs:103:4
[INFO] [stdout]     |
[INFO] [stdout] 103 | fn legalized_modification(s: &mut String) {
[INFO] [stdout]     |    ^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `slice_stuff` is never used
[INFO] [stdout]    --> src/prepackages/ownership.rs:108:4
[INFO] [stdout]     |
[INFO] [stdout] 108 | fn slice_stuff() {
[INFO] [stdout]     |    ^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `first_word` is never used
[INFO] [stdout]    --> src/prepackages/ownership.rs:140:4
[INFO] [stdout]     |
[INFO] [stdout] 140 | fn first_word(s: &String) -> usize {
[INFO] [stdout]     |    ^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct `User` is never constructed
[INFO] [stdout]  --> src/prepackages/structs.rs:2:8
[INFO] [stdout]   |
[INFO] [stdout] 2 | struct User {
[INFO] [stdout]   |        ^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct `Color` is never constructed
[INFO] [stdout]  --> src/prepackages/structs.rs:9:8
[INFO] [stdout]   |
[INFO] [stdout] 9 | struct Color(i32, i32, i32);
[INFO] [stdout]   |        ^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct `Point` is never constructed
[INFO] [stdout]   --> src/prepackages/structs.rs:10:8
[INFO] [stdout]    |
[INFO] [stdout] 10 | struct Point(i32, i32, i32);
[INFO] [stdout]    |        ^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `structure` is never used
[INFO] [stdout]   --> src/prepackages/structs.rs:12:8
[INFO] [stdout]    |
[INFO] [stdout] 12 | pub fn structure() {
[INFO] [stdout]    |        ^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `first_structs` is never used
[INFO] [stdout]   --> src/prepackages/structs.rs:19:4
[INFO] [stdout]    |
[INFO] [stdout] 19 | fn first_structs() {
[INFO] [stdout]    |    ^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `build_user` is never used
[INFO] [stdout]   --> src/prepackages/structs.rs:39:4
[INFO] [stdout]    |
[INFO] [stdout] 39 | fn build_user(email: String, username1: String) -> User {
[INFO] [stdout]    |    ^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: fields `width` and `height` are never read
[INFO] [stdout]   --> src/prepackages/structs.rs:50:5
[INFO] [stdout]    |
[INFO] [stdout] 49 | struct Rectangle {
[INFO] [stdout]    |        --------- fields in this struct
[INFO] [stdout] 50 |     width: u32,
[INFO] [stdout]    |     ^^^^^
[INFO] [stdout] 51 |     height: u32,
[INFO] [stdout]    |     ^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `Rectangle` has a derived impl for the trait `Debug`, but this is intentionally ignored during dead code analysis
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field `diameter` is never read
[INFO] [stdout]   --> src/prepackages/structs.rs:56:5
[INFO] [stdout]    |
[INFO] [stdout] 55 | struct Circle {
[INFO] [stdout]    |        ------ field in this struct
[INFO] [stdout] 56 |     diameter: u32
[INFO] [stdout]    |     ^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `Circle` has a derived impl for the trait `Debug`, but this is intentionally ignored during dead code analysis
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: multiple associated items are never used
[INFO] [stdout]   --> src/prepackages/structs.rs:61:8
[INFO] [stdout]    |
[INFO] [stdout] 59 | impl Rectangle {
[INFO] [stdout]    | -------------- associated items in this implementation
[INFO] [stdout] 60 |
[INFO] [stdout] 61 |     fn area(&self) -> u32 {
[INFO] [stdout]    |        ^^^^
[INFO] [stdout] ...
[INFO] [stdout] 65 |     fn longest_side(&self) -> u32 {
[INFO] [stdout]    |        ^^^^^^^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 72 |     fn is_square(&self) -> bool {
[INFO] [stdout]    |        ^^^^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 77 |     fn transform_to_circle(self) -> Circle {
[INFO] [stdout]    |        ^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 81 |     fn can_hold(&self, other: &Rectangle) -> bool {
[INFO] [stdout]    |        ^^^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 85 |     fn stretch(&mut self, add_height: u32, add_width: u32) {
[INFO] [stdout]    |        ^^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 91 |     fn square(size: u32) -> Rectangle {
[INFO] [stdout]    |        ^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: method `shrink` is never used
[INFO] [stdout]    --> src/prepackages/structs.rs:101:8
[INFO] [stdout]     |
[INFO] [stdout] 100 | impl Rectangle {
[INFO] [stdout]     | -------------- method in this implementation
[INFO] [stdout] 101 |     fn shrink(&mut self, take_height: u32, take_width: u32) {
[INFO] [stdout]     |        ^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `rectangles` is never used
[INFO] [stdout]    --> src/prepackages/structs.rs:107:4
[INFO] [stdout]     |
[INFO] [stdout] 107 | fn rectangles() {
[INFO] [stdout]     |    ^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `area` is never used
[INFO] [stdout]    --> src/prepackages/structs.rs:131:4
[INFO] [stdout]     |
[INFO] [stdout] 131 | fn area(rectangle: &Rectangle) -> u32 {
[INFO] [stdout]     |    ^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `variate` is never used
[INFO] [stdout]  --> src/prepackages/variables.rs:2:8
[INFO] [stdout]   |
[INFO] [stdout] 2 | pub fn variate() {
[INFO] [stdout]   |        ^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `function_stuff` is never used
[INFO] [stdout]   --> src/prepackages/variables.rs:44:4
[INFO] [stdout]    |
[INFO] [stdout] 44 | fn function_stuff() -> i32 {
[INFO] [stdout]    |    ^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `returns_one` is never used
[INFO] [stdout]   --> src/prepackages/variables.rs:56:4
[INFO] [stdout]    |
[INFO] [stdout] 56 | fn returns_one() -> i32 {
[INFO] [stdout]    |    ^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `fizz_buzz` is never used
[INFO] [stdout]   --> src/prepackages/variables.rs:60:4
[INFO] [stdout]    |
[INFO] [stdout] 60 | fn fizz_buzz(x: i32) {
[INFO] [stdout]    |    ^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `loop_return` is never used
[INFO] [stdout]   --> src/prepackages/variables.rs:71:4
[INFO] [stdout]    |
[INFO] [stdout] 71 | fn loop_return(x: i32) -> i32 {
[INFO] [stdout]    |    ^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `countdown` is never used
[INFO] [stdout]   --> src/prepackages/variables.rs:81:4
[INFO] [stdout]    |
[INFO] [stdout] 81 | fn countdown(loops: i32) {
[INFO] [stdout]    |    ^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `for_loop` is never used
[INFO] [stdout]   --> src/prepackages/variables.rs:90:4
[INFO] [stdout]    |
[INFO] [stdout] 90 | fn for_loop(placement: i32) {
[INFO] [stdout]    |    ^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `range_for_loop` is never used
[INFO] [stdout]   --> src/prepackages/variables.rs:98:4
[INFO] [stdout]    |
[INFO] [stdout] 98 | fn range_for_loop(until: i32) {
[INFO] [stdout]    |    ^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `reverse_range_for_loop` is never used
[INFO] [stdout]    --> src/prepackages/variables.rs:104:4
[INFO] [stdout]     |
[INFO] [stdout] 104 | fn reverse_range_for_loop(from: i32) {
[INFO] [stdout]     |    ^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variants `V4` and `V6` are never constructed
[INFO] [stdout]  --> src/prepackages/enums/enums.rs:6:5
[INFO] [stdout]   |
[INFO] [stdout] 5 | enum IpAddrKind {
[INFO] [stdout]   |      ---------- variants in this enum
[INFO] [stdout] 6 |     V4,
[INFO] [stdout]   |     ^^
[INFO] [stdout] 7 |     V6
[INFO] [stdout]   |     ^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `IpAddrKind` has a derived impl for the trait `Debug`, but this is intentionally ignored during dead code analysis
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: enum `ConciseIpAddr` is never used
[INFO] [stdout]   --> src/prepackages/enums/enums.rs:10:6
[INFO] [stdout]    |
[INFO] [stdout] 10 | enum ConciseIpAddr {
[INFO] [stdout]    |      ^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: method `call` is never used
[INFO] [stdout]   --> src/prepackages/enums/enums.rs:25:8
[INFO] [stdout]    |
[INFO] [stdout] 24 | impl Message {
[INFO] [stdout]    | ------------ method in this implementation
[INFO] [stdout] 25 |     fn call(&self) {
[INFO] [stdout]    |        ^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: fields `kind` and `address` are never read
[INFO] [stdout]   --> src/prepackages/enums/enums.rs:38:5
[INFO] [stdout]    |
[INFO] [stdout] 37 | struct IpAddr {
[INFO] [stdout]    |        ------ fields in this struct
[INFO] [stdout] 38 |     kind: IpAddrKind,
[INFO] [stdout]    |     ^^^^
[INFO] [stdout] 39 |     address: String,
[INFO] [stdout]    |     ^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `IpAddr` has a derived impl for the trait `Debug`, but this is intentionally ignored during dead code analysis
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `enumerate` is never used
[INFO] [stdout]   --> src/prepackages/enums/enums.rs:42:8
[INFO] [stdout]    |
[INFO] [stdout] 42 | pub fn enumerate() {
[INFO] [stdout]    |        ^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variants `Alabama`, `Alaska`, and `Oregon` are never constructed
[INFO] [stdout]  --> src/prepackages/enums/matching.rs:4:5
[INFO] [stdout]   |
[INFO] [stdout] 3 | enum UsState {
[INFO] [stdout]   |      ------- variants in this enum
[INFO] [stdout] 4 |     Alabama,
[INFO] [stdout]   |     ^^^^^^^
[INFO] [stdout] 5 |     Alaska,
[INFO] [stdout]   |     ^^^^^^
[INFO] [stdout] 6 |     Oregon,
[INFO] [stdout]   |     ^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `UsState` has a derived impl for the trait `Debug`, but this is intentionally ignored during dead code analysis
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: enum `Coin` is never used
[INFO] [stdout]  --> src/prepackages/enums/matching.rs:9:6
[INFO] [stdout]   |
[INFO] [stdout] 9 | enum Coin {
[INFO] [stdout]   |      ^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: method `value_in_cents` is never used
[INFO] [stdout]   --> src/prepackages/enums/matching.rs:17:8
[INFO] [stdout]    |
[INFO] [stdout] 16 | impl Coin {
[INFO] [stdout]    | --------- method in this implementation
[INFO] [stdout] 17 |     fn value_in_cents(&self) -> u8 {
[INFO] [stdout]    |        ^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `match_stuff` is never used
[INFO] [stdout]   --> src/prepackages/enums/matching.rs:33:8
[INFO] [stdout]    |
[INFO] [stdout] 33 | pub fn match_stuff() {
[INFO] [stdout]    |        ^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `find_someone` is never used
[INFO] [stdout]   --> src/prepackages/enums/matching.rs:41:4
[INFO] [stdout]    |
[INFO] [stdout] 41 | fn find_someone(optionals: &[Option<i32>]) {
[INFO] [stdout]    |    ^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `plus_one` is never used
[INFO] [stdout]   --> src/prepackages/enums/matching.rs:49:4
[INFO] [stdout]    |
[INFO] [stdout] 49 | fn plus_one(x: Option<i32>) -> Option<i32> {
[INFO] [stdout]    |    ^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `options` is never used
[INFO] [stdout]  --> src/prepackages/enums/options.rs:2:8
[INFO] [stdout]   |
[INFO] [stdout] 2 | pub fn options() {
[INFO] [stdout]   |        ^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 55 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 1.79s
[INFO] running `Command { std: "docker" "inspect" "3e38c9cafffe204368f4caa2962e06be02440f49d4a61cf87d61c2202bcec4d4", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "3e38c9cafffe204368f4caa2962e06be02440f49d4a61cf87d61c2202bcec4d4", kill_on_drop: false }`
[INFO] [stdout] 3e38c9cafffe204368f4caa2962e06be02440f49d4a61cf87d61c2202bcec4d4
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-1-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-1-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=warn" "-e" "RUSTDOCFLAGS=--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@sha256:5ff2268d62e97bff2cde7d5815dd6ed5b47097566f13b8d0ca110b04b60e07ed" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2023-04-20" "test" "--frozen", kill_on_drop: false }`
[INFO] [stdout] fadf4406a7fd21a708132a6d78497202bccd2ff012eb8682cfab1a71dcb35689
[INFO] running `Command { std: "docker" "start" "-a" "fadf4406a7fd21a708132a6d78497202bccd2ff012eb8682cfab1a71dcb35689", kill_on_drop: false }`
[INFO] [stderr] warning: unused manifest key: package.licence
[INFO] [stderr] warning: function `exercise` is never used
[INFO] [stderr]  --> src/collections/exercises.rs:7:8
[INFO] [stderr]   |
[INFO] [stderr] 7 | pub fn exercise() {
[INFO] [stderr]   |        ^^^^^^^^
[INFO] [stderr]   |
[INFO] [stderr]   = note: `#[warn(dead_code)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: function `employee_registration` is never used
[INFO] [stderr]   --> src/collections/exercises.rs:35:8
[INFO] [stderr]    |
[INFO] [stderr] 35 | pub fn employee_registration() {
[INFO] [stderr]    |        ^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: function `remove_employee` is never used
[INFO] [stderr]   --> src/collections/exercises.rs:70:4
[INFO] [stderr]    |
[INFO] [stderr] 70 | fn remove_employee(register: &mut HashMap<String, Vec<String>>, other_words: &mut SplitWhitespace) {
[INFO] [stderr]    |    ^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: function `extract_full_name` is never used
[INFO] [stderr]   --> src/collections/exercises.rs:90:4
[INFO] [stderr]    |
[INFO] [stderr] 90 | fn extract_full_name(words: &mut SplitWhitespace, stop: &str) -> Result<String, String> {
[INFO] [stderr]    |    ^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: function `register_employee` is never used
[INFO] [stderr]    --> src/collections/exercises.rs:108:4
[INFO] [stderr]     |
[INFO] [stderr] 108 | fn register_employee(register: &mut HashMap<String, Vec<String>>, other_words: &mut SplitWhitespace) {
[INFO] [stderr]     |    ^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: function `print_register` is never used
[INFO] [stderr]    --> src/collections/exercises.rs:119:4
[INFO] [stderr]     |
[INFO] [stderr] 119 | fn print_register(register: &HashMap<String, Vec<String>>) {
[INFO] [stderr]     |    ^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: function `hash_it_up` is never used
[INFO] [stderr]  --> src/collections/hashmaps.rs:3:8
[INFO] [stderr]   |
[INFO] [stderr] 3 | pub fn hash_it_up() {
[INFO] [stderr]   |        ^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: function `string_stuff` is never used
[INFO] [stderr]  --> src/collections/strings.rs:2:8
[INFO] [stderr]   |
[INFO] [stderr] 2 | pub fn string_stuff() {
[INFO] [stderr]   |        ^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: function `got_game` is never used
[INFO] [stderr]   --> src/collections/strings.rs:22:4
[INFO] [stderr]    |
[INFO] [stderr] 22 | fn got_game() -> String {
[INFO] [stderr]    |    ^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: function `to_pig_latin` is never used
[INFO] [stderr]   --> src/collections/strings.rs:33:8
[INFO] [stderr]    |
[INFO] [stderr] 33 | pub fn to_pig_latin(kosher: &String) -> String {
[INFO] [stderr]    |        ^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: function `is_vowel` is never used
[INFO] [stderr]   --> src/collections/strings.rs:53:4
[INFO] [stderr]    |
[INFO] [stderr] 53 | fn is_vowel(maybe_vowel: &char) -> bool {
[INFO] [stderr]    |    ^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: struct `Guess` is never constructed
[INFO] [stderr]  --> src/prepackages/gg.rs:6:8
[INFO] [stderr]   |
[INFO] [stderr] 6 | struct Guess {
[INFO] [stderr]   |        ^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: associated items `new` and `value` are never used
[INFO] [stderr]   --> src/prepackages/gg.rs:11:12
[INFO] [stderr]    |
[INFO] [stderr] 10 | impl Guess {
[INFO] [stderr]    | ---------- associated items in this implementation
[INFO] [stderr] 11 |     pub fn new(value: i32) -> Guess {
[INFO] [stderr]    |            ^^^
[INFO] [stderr] ...
[INFO] [stderr] 19 |     pub fn value(&self) -> i32 {
[INFO] [stderr]    |            ^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: function `play_the_guessing_game` is never used
[INFO] [stderr]   --> src/prepackages/gg.rs:24:8
[INFO] [stderr]    |
[INFO] [stderr] 24 | pub fn play_the_guessing_game() {
[INFO] [stderr]    |        ^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: function `own` is never used
[INFO] [stderr]  --> src/prepackages/ownership.rs:2:8
[INFO] [stderr]   |
[INFO] [stderr] 2 | pub fn own() {
[INFO] [stderr]   |        ^^^
[INFO] [stderr] 
[INFO] [stderr] warning: function `takes_ownership` is never used
[INFO] [stderr]   --> src/prepackages/ownership.rs:47:4
[INFO] [stderr]    |
[INFO] [stderr] 47 | fn takes_ownership(val: String) {
[INFO] [stderr]    |    ^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: function `makes_copy` is never used
[INFO] [stderr]   --> src/prepackages/ownership.rs:51:4
[INFO] [stderr]    |
[INFO] [stderr] 51 | fn makes_copy(number: i32) {
[INFO] [stderr]    |    ^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: function `references_and_borrowing` is never used
[INFO] [stderr]   --> src/prepackages/ownership.rs:56:4
[INFO] [stderr]    |
[INFO] [stderr] 56 | fn references_and_borrowing() {
[INFO] [stderr]    |    ^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: function `calculate_length` is never used
[INFO] [stderr]   --> src/prepackages/ownership.rs:87:4
[INFO] [stderr]    |
[INFO] [stderr] 87 | fn calculate_length(s: &String) -> usize {
[INFO] [stderr]    |    ^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: function `string_to_length` is never used
[INFO] [stderr]   --> src/prepackages/ownership.rs:91:4
[INFO] [stderr]    |
[INFO] [stderr] 91 | fn string_to_length(s: String) -> usize {
[INFO] [stderr]    |    ^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: function `print_length` is never used
[INFO] [stderr]   --> src/prepackages/ownership.rs:95:4
[INFO] [stderr]    |
[INFO] [stderr] 95 | fn print_length(s: &String) {
[INFO] [stderr]    |    ^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: function `legalized_modification` is never used
[INFO] [stderr]    --> src/prepackages/ownership.rs:103:4
[INFO] [stderr]     |
[INFO] [stderr] 103 | fn legalized_modification(s: &mut String) {
[INFO] [stderr]     |    ^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: function `slice_stuff` is never used
[INFO] [stderr]    --> src/prepackages/ownership.rs:108:4
[INFO] [stderr]     |
[INFO] [stderr] 108 | fn slice_stuff() {
[INFO] [stderr]     |    ^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: function `slice_first_word` is never used
[INFO] [stderr]    --> src/prepackages/ownership.rs:124:4
[INFO] [stderr]     |
[INFO] [stderr] 124 | fn slice_first_word(s: &String) -> &str {
[INFO] [stderr]     |    ^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: function `first_word` is never used
[INFO] [stderr]    --> src/prepackages/ownership.rs:140:4
[INFO] [stderr]     |
[INFO] [stderr] 140 | fn first_word(s: &String) -> usize {
[INFO] [stderr]     |    ^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: struct `User` is never constructed
[INFO] [stderr]  --> src/prepackages/structs.rs:2:8
[INFO] [stderr]   |
[INFO] [stderr] 2 | struct User {
[INFO] [stderr]   |        ^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: struct `Color` is never constructed
[INFO] [stderr]  --> src/prepackages/structs.rs:9:8
[INFO] [stderr]   |
[INFO] [stderr] 9 | struct Color(i32, i32, i32);
[INFO] [stderr]   |        ^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: struct `Point` is never constructed
[INFO] [stderr]   --> src/prepackages/structs.rs:10:8
[INFO] [stderr]    |
[INFO] [stderr] 10 | struct Point(i32, i32, i32);
[INFO] [stderr]    |        ^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: function `structure` is never used
[INFO] [stderr]   --> src/prepackages/structs.rs:12:8
[INFO] [stderr]    |
[INFO] [stderr] 12 | pub fn structure() {
[INFO] [stderr]    |        ^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: function `first_structs` is never used
[INFO] [stderr]   --> src/prepackages/structs.rs:19:4
[INFO] [stderr]    |
[INFO] [stderr] 19 | fn first_structs() {
[INFO] [stderr]    |    ^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: function `build_user` is never used
[INFO] [stderr]   --> src/prepackages/structs.rs:39:4
[INFO] [stderr]    |
[INFO] [stderr] 39 | fn build_user(email: String, username1: String) -> User {
[INFO] [stderr]    |    ^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: fields `width` and `height` are never read
[INFO] [stderr]   --> src/prepackages/structs.rs:50:5
[INFO] [stderr]    |
[INFO] [stderr] 49 | struct Rectangle {
[INFO] [stderr]    |        --------- fields in this struct
[INFO] [stderr] 50 |     width: u32,
[INFO] [stderr]    |     ^^^^^
[INFO] [stderr] 51 |     height: u32,
[INFO] [stderr]    |     ^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: `Rectangle` has a derived impl for the trait `Debug`, but this is intentionally ignored during dead code analysis
[INFO] [stderr] 
[INFO] [stderr] warning: field `diameter` is never read
[INFO] [stderr]   --> src/prepackages/structs.rs:56:5
[INFO] [stderr]    |
[INFO] [stderr] 55 | struct Circle {
[INFO] [stderr]    |        ------ field in this struct
[INFO] [stderr] 56 |     diameter: u32
[INFO] [stderr]    |     ^^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: `Circle` has a derived impl for the trait `Debug`, but this is intentionally ignored during dead code analysis
[INFO] [stderr] 
[INFO] [stderr] warning: multiple associated items are never used
[INFO] [stderr]   --> src/prepackages/structs.rs:61:8
[INFO] [stderr]    |
[INFO] [stderr] 59 | impl Rectangle {
[INFO] [stderr]    | -------------- associated items in this implementation
[INFO] [stderr] 60 |
[INFO] [stderr] 61 |     fn area(&self) -> u32 {
[INFO] [stderr]    |        ^^^^
[INFO] [stderr] ...
[INFO] [stderr] 65 |     fn longest_side(&self) -> u32 {
[INFO] [stderr]    |        ^^^^^^^^^^^^
[INFO] [stderr] ...
[INFO] [stderr] 72 |     fn is_square(&self) -> bool {
[INFO] [stderr]    |        ^^^^^^^^^
[INFO] [stderr] ...
[INFO] [stderr] 77 |     fn transform_to_circle(self) -> Circle {
[INFO] [stderr]    |        ^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] ...
[INFO] [stderr] 81 |     fn can_hold(&self, other: &Rectangle) -> bool {
[INFO] [stderr]    |        ^^^^^^^^
[INFO] [stderr] ...
[INFO] [stderr] 85 |     fn stretch(&mut self, add_height: u32, add_width: u32) {
[INFO] [stderr]    |        ^^^^^^^
[INFO] [stderr] ...
[INFO] [stderr] 91 |     fn square(size: u32) -> Rectangle {
[INFO] [stderr]    |        ^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: method `shrink` is never used
[INFO] [stderr]    --> src/prepackages/structs.rs:101:8
[INFO] [stderr]     |
[INFO] [stderr] 100 | impl Rectangle {
[INFO] [stderr]     | -------------- method in this implementation
[INFO] [stderr] 101 |     fn shrink(&mut self, take_height: u32, take_width: u32) {
[INFO] [stderr]     |        ^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: function `rectangles` is never used
[INFO] [stderr]    --> src/prepackages/structs.rs:107:4
[INFO] [stderr]     |
[INFO] [stderr] 107 | fn rectangles() {
[INFO] [stderr]     |    ^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: function `area` is never used
[INFO] [stderr]    --> src/prepackages/structs.rs:131:4
[INFO] [stderr]     |
[INFO] [stderr] 131 | fn area(rectangle: &Rectangle) -> u32 {
[INFO] [stderr]     |    ^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: function `variate` is never used
[INFO] [stderr]  --> src/prepackages/variables.rs:2:8
[INFO] [stderr]   |
[INFO] [stderr] 2 | pub fn variate() {
[INFO] [stderr]   |        ^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: function `function_stuff` is never used
[INFO] [stderr]   --> src/prepackages/variables.rs:44:4
[INFO] [stderr]    |
[INFO] [stderr] 44 | fn function_stuff() -> i32 {
[INFO] [stderr]    |    ^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: function `returns_one` is never used
[INFO] [stderr]   --> src/prepackages/variables.rs:56:4
[INFO] [stderr]    |
[INFO] [stderr] 56 | fn returns_one() -> i32 {
[INFO] [stderr]    |    ^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: function `fizz_buzz` is never used
[INFO] [stderr]   --> src/prepackages/variables.rs:60:4
[INFO] [stderr]    |
[INFO] [stderr] 60 | fn fizz_buzz(x: i32) {
[INFO] [stderr]    |    ^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: function `loop_return` is never used
[INFO] [stderr]   --> src/prepackages/variables.rs:71:4
[INFO] [stderr]    |
[INFO] [stderr] 71 | fn loop_return(x: i32) -> i32 {
[INFO] [stderr]    |    ^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: function `countdown` is never used
[INFO] [stderr]   --> src/prepackages/variables.rs:81:4
[INFO] [stderr]    |
[INFO] [stderr] 81 | fn countdown(loops: i32) {
[INFO] [stderr]    |    ^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: function `for_loop` is never used
[INFO] [stderr]   --> src/prepackages/variables.rs:90:4
[INFO] [stderr]    |
[INFO] [stderr] 90 | fn for_loop(placement: i32) {
[INFO] [stderr]    |    ^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: function `range_for_loop` is never used
[INFO] [stderr]   --> src/prepackages/variables.rs:98:4
[INFO] [stderr]    |
[INFO] [stderr] 98 | fn range_for_loop(until: i32) {
[INFO] [stderr]    |    ^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: function `reverse_range_for_loop` is never used
[INFO] [stderr]    --> src/prepackages/variables.rs:104:4
[INFO] [stderr]     |
[INFO] [stderr] 104 | fn reverse_range_for_loop(from: i32) {
[INFO] [stderr]     |    ^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: variants `V4` and `V6` are never constructed
[INFO] [stderr]  --> src/prepackages/enums/enums.rs:6:5
[INFO] [stderr]   |
[INFO] [stderr] 5 | enum IpAddrKind {
[INFO] [stderr]   |      ---------- variants in this enum
[INFO] [stderr] 6 |     V4,
[INFO] [stderr]   |     ^^
[INFO] [stderr] 7 |     V6
[INFO] [stderr]   |     ^^
[INFO] [stderr]   |
[INFO] [stderr]   = note: `IpAddrKind` has a derived impl for the trait `Debug`, but this is intentionally ignored during dead code analysis
[INFO] [stderr] 
[INFO] [stderr] warning: enum `ConciseIpAddr` is never used
[INFO] [stderr]   --> src/prepackages/enums/enums.rs:10:6
[INFO] [stderr]    |
[INFO] [stderr] 10 | enum ConciseIpAddr {
[INFO] [stderr]    |      ^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: method `call` is never used
[INFO] [stderr]   --> src/prepackages/enums/enums.rs:25:8
[INFO] [stderr]    |
[INFO] [stderr] 24 | impl Message {
[INFO] [stderr]    | ------------ method in this implementation
[INFO] [stderr] 25 |     fn call(&self) {
[INFO] [stderr]    |        ^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: fields `kind` and `address` are never read
[INFO] [stderr]   --> src/prepackages/enums/enums.rs:38:5
[INFO] [stderr]    |
[INFO] [stderr] 37 | struct IpAddr {
[INFO] [stderr]    |        ------ fields in this struct
[INFO] [stderr] 38 |     kind: IpAddrKind,
[INFO] [stderr]    |     ^^^^
[INFO] [stderr] 39 |     address: String,
[INFO] [stderr]    |     ^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: `IpAddr` has a derived impl for the trait `Debug`, but this is intentionally ignored during dead code analysis
[INFO] [stderr] 
[INFO] [stderr] warning: function `enumerate` is never used
[INFO] [stderr]   --> src/prepackages/enums/enums.rs:42:8
[INFO] [stderr]    |
[INFO] [stderr] 42 | pub fn enumerate() {
[INFO] [stderr]    |        ^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: variants `Alabama`, `Alaska`, and `Oregon` are never constructed
[INFO] [stderr]  --> src/prepackages/enums/matching.rs:4:5
[INFO] [stderr]   |
[INFO] [stderr] 3 | enum UsState {
[INFO] [stderr]   |      ------- variants in this enum
[INFO] [stderr] 4 |     Alabama,
[INFO] [stderr]   |     ^^^^^^^
[INFO] [stderr] 5 |     Alaska,
[INFO] [stderr]   |     ^^^^^^
[INFO] [stderr] 6 |     Oregon,
[INFO] [stderr]   |     ^^^^^^
[INFO] [stderr]   |
[INFO] [stderr]   = note: `UsState` has a derived impl for the trait `Debug`, but this is intentionally ignored during dead code analysis
[INFO] [stderr] 
[INFO] [stderr] warning: enum `Coin` is never used
[INFO] [stderr]  --> src/prepackages/enums/matching.rs:9:6
[INFO] [stderr]   |
[INFO] [stderr] 9 | enum Coin {
[INFO] [stderr]   |      ^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: method `value_in_cents` is never used
[INFO] [stderr]   --> src/prepackages/enums/matching.rs:17:8
[INFO] [stderr]    |
[INFO] [stderr] 16 | impl Coin {
[INFO] [stderr]    | --------- method in this implementation
[INFO] [stderr] 17 |     fn value_in_cents(&self) -> u8 {
[INFO] [stderr]    |        ^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: function `match_stuff` is never used
[INFO] [stderr]   --> src/prepackages/enums/matching.rs:33:8
[INFO] [stderr]    |
[INFO] [stderr] 33 | pub fn match_stuff() {
[INFO] [stderr]    |        ^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: function `find_someone` is never used
[INFO] [stderr]   --> src/prepackages/enums/matching.rs:41:4
[INFO] [stderr]    |
[INFO] [stderr] 41 | fn find_someone(optionals: &[Option<i32>]) {
[INFO] [stderr]    |    ^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: function `plus_one` is never used
[INFO] [stderr]   --> src/prepackages/enums/matching.rs:49:4
[INFO] [stderr]    |
[INFO] [stderr] 49 | fn plus_one(x: Option<i32>) -> Option<i32> {
[INFO] [stderr]    |    ^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: function `options` is never used
[INFO] [stderr]  --> src/prepackages/enums/options.rs:2:8
[INFO] [stderr]   |
[INFO] [stderr] 2 | pub fn options() {
[INFO] [stderr]   |        ^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: field `value` is never read
[INFO] [stderr]  --> src/prepackages/gg.rs:7:5
[INFO] [stderr]   |
[INFO] [stderr] 6 | struct Guess {
[INFO] [stderr]   |        ----- field in this struct
[INFO] [stderr] 7 |     value: i32
[INFO] [stderr]   |     ^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: method `value` is never used
[INFO] [stderr]   --> src/prepackages/gg.rs:19:12
[INFO] [stderr]    |
[INFO] [stderr] 10 | impl Guess {
[INFO] [stderr]    | ---------- method in this implementation
[INFO] [stderr] ...
[INFO] [stderr] 19 |     pub fn value(&self) -> i32 {
[INFO] [stderr]    |            ^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: `study-crate` (lib) generated 58 warnings
[INFO] [stderr] warning: `study-crate` (lib test) generated 55 warnings (53 duplicates)
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 0.03s
[INFO] [stderr]      Running unittests src/lib.rs (/opt/rustwide/target/debug/deps/study_crate-9ad512f6b6e31a93)
[INFO] [stdout] 
[INFO] [stdout] running 8 tests
[INFO] [stdout] test collections::strings::tests::to_pig_latin_identifies_pseudo_vowel ... ok
[INFO] [stdout] test collections::strings::tests::to_pig_latin_identifies_consonant ... ok
[INFO] [stdout] test collections::strings::tests::to_pig_latin_identifies_vowel ... ok
[INFO] [stdout] test prepackages::ownership::tests::slice_first_word_returns_first ... ok
[INFO] [stdout] test tests::find_mode_chars ... ok
[INFO] [stdout] test prepackages::ownership::tests::slice_first_word_returns_entire_word ... ok
[INFO] [stdout] test prepackages::gg::tests::panics_on_smaller_than_1 - should panic ... ok
[INFO] [stdout] test prepackages::gg::tests::panics_on_greater_than_100 - should panic ... ok
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 8 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out; finished in 0.05s
[INFO] [stdout] 
[INFO] [stderr]      Running unittests src/main.rs (/opt/rustwide/target/debug/deps/study_crate-4c905fcb37cd9db5)
[INFO] [stdout] 
[INFO] [stdout] running 36 tests
[INFO] [stdout] test collections::strings::tests::to_pig_latin_identifies_vowel ... ok
[INFO] [stdout] test collections::strings::tests::to_pig_latin_identifies_consonant ... ok
[INFO] [stdout] test collections::strings::tests::to_pig_latin_identifies_pseudo_vowel ... ok
[INFO] [stdout] test concurrent::lock::tests::test_get_that_lock ... ok
[INFO] [stdout] test concurrent::channel::tests::test_the_waters ... ok
[INFO] [stdout] test concurrent::classic::tests::concurrency_is_black_magic ... ok
[INFO] [stdout] test concurrent::lock::tests::test_contested_lock ... ok
[INFO] [stdout] test fp::closures::tests::call_with_different_values ... ok
[INFO] [stdout] test concurrent::classic::tests::vec_moves ... ok
[INFO] [stdout] test fp::closures::tests::move_value_closure ... ok
[INFO] [stdout] test exceptions::tests::test_read_username_from_file ... FAILED
[INFO] [stdout] test exceptions::tests::test_succinct_read ... FAILED
[INFO] [stdout] test fp::patterns::tests::be_unintuitive ... ok
[INFO] [stdout] test fp::patterns::tests::call_destructuring_function ... ok
[INFO] [stdout] test generics::functions::tests::test_find_largest ... ok
[INFO] [stdout] test oop::rust_states_lib::tests::test_blog_lifecycle ... ok
[INFO] [stdout] test oop::rust_states_lib::tests::test_private_constructor ... ok
[INFO] [stdout] test oop::states::tests::test_blog_lifecycle ... ok
[INFO] [stdout] test fp::patterns::tests::destructure_tuple ... ok
[INFO] [stdout] test pointers::smart::tests::box_vs_pointer ... ok
[INFO] [stdout] test pointers::smart::tests::create_cons_list ... ok
[INFO] [stdout] test pointers::smart::tests::diy_box ... ok
[INFO] [stdout] test pointers::smart::tests::first_box ... ok
[INFO] [stdout] test pointers::smart::tests::drop_it_like_it_is_out_of_scope ... ok
[INFO] [stdout] test pointers::smart::tests::early_drop ... ok
[INFO] [stdout] test pointers::smart::tests::multiple_references_cons ... ok
[INFO] [stdout] test prepackages::gg::tests::panics_on_greater_than_100 - should panic ... ok
[INFO] [stdout] test prepackages::ownership::tests::slice_first_word_returns_entire_word ... ok
[INFO] [stdout] test pointers::smart::tests::say_hello ... ok
[INFO] [stdout] test prepackages::ownership::tests::slice_first_word_returns_first ... ok
[INFO] [stdout] test prepackages::gg::tests::panics_on_smaller_than_1 - should panic ... ok
[INFO] [stdout] test fp::closures::tests::insanity_is_accepted ... ok
[INFO] [stdout] test fp::closures::tests::returns_cached_value ... ok
[INFO] [stdout] test fp::closures::tests::simulated_expensive_calculation_closure ... ok
[INFO] [stdout] test concurrent::channel::tests::get_far_out ... ok
[INFO] [stdout] test concurrent::channel::tests::get_out_to_sea ... ok
[INFO] [stderr] error: test failed, to rerun pass `--bin study-crate`
[INFO] [stdout] 
[INFO] [stdout] failures:
[INFO] [stdout] 
[INFO] [stdout] ---- exceptions::tests::test_read_username_from_file stdout ----
[INFO] [stdout] thread 'exceptions::tests::test_read_username_from_file' panicked at 'assertion failed: result.is_ok()', src/exceptions.rs:78:9
[INFO] [stdout] stack backtrace:
[INFO] [stdout]    0:     0x55ddd4a6563a - std::backtrace_rs::backtrace::libunwind::trace::h2f05d0192276a8f6
[INFO] [stdout]                                at /rustc/1b7dd2252b99671ce5d1cb9664c5f8636329436d/library/std/src/../../backtrace/src/backtrace/libunwind.rs:93:5
[INFO] [stdout]    1:     0x55ddd4a6563a - std::backtrace_rs::backtrace::trace_unsynchronized::hedc23dff7a1af150
[INFO] [stdout]                                at /rustc/1b7dd2252b99671ce5d1cb9664c5f8636329436d/library/std/src/../../backtrace/src/backtrace/mod.rs:66:5
[INFO] [stdout]    2:     0x55ddd4a6563a - std::sys_common::backtrace::_print_fmt::h17541ef7592f3ce2
[INFO] [stdout]                                at /rustc/1b7dd2252b99671ce5d1cb9664c5f8636329436d/library/std/src/sys_common/backtrace.rs:65:5
[INFO] [stdout]    3:     0x55ddd4a6563a - <std::sys_common::backtrace::_print::DisplayBacktrace as core::fmt::Display>::fmt::h20f75df5ab0c0792
[INFO] [stdout]                                at /rustc/1b7dd2252b99671ce5d1cb9664c5f8636329436d/library/std/src/sys_common/backtrace.rs:44:22
[INFO] [stdout]    4:     0x55ddd4a892df - core::fmt::write::h78109e6f466b3af6
[INFO] [stdout]                                at /rustc/1b7dd2252b99671ce5d1cb9664c5f8636329436d/library/core/src/fmt/mod.rs:1254:17
[INFO] [stdout]    5:     0x55ddd4a62965 - std::io::Write::write_fmt::hd24bfb68a1b35a25
[INFO] [stdout]                                at /rustc/1b7dd2252b99671ce5d1cb9664c5f8636329436d/library/std/src/io/mod.rs:1698:15
[INFO] [stdout]    6:     0x55ddd4a65405 - std::sys_common::backtrace::_print::h8dac57a9f8fbf9a5
[INFO] [stdout]                                at /rustc/1b7dd2252b99671ce5d1cb9664c5f8636329436d/library/std/src/sys_common/backtrace.rs:47:5
[INFO] [stdout]    7:     0x55ddd4a65405 - std::sys_common::backtrace::print::hf9ecbf41d1aa712f
[INFO] [stdout]                                at /rustc/1b7dd2252b99671ce5d1cb9664c5f8636329436d/library/std/src/sys_common/backtrace.rs:34:9
[INFO] [stdout]    8:     0x55ddd4a670be - std::panicking::default_hook::{{closure}}::h04c07acfc84ca028
[INFO] [stdout]                                at /rustc/1b7dd2252b99671ce5d1cb9664c5f8636329436d/library/std/src/panicking.rs:269:22
[INFO] [stdout]    9:     0x55ddd4a66df1 - std::panicking::default_hook::h01f6bb23e1eceb2c
[INFO] [stdout]                                at /rustc/1b7dd2252b99671ce5d1cb9664c5f8636329436d/library/std/src/panicking.rs:285:9
[INFO] [stdout]   10:     0x55ddd4a3662b - <alloc::boxed::Box<F,A> as core::ops::function::Fn<Args>>::call::h87fe9f7b2fd49e4c
[INFO] [stdout]                                at /rustc/1b7dd2252b99671ce5d1cb9664c5f8636329436d/library/alloc/src/boxed.rs:1987:9
[INFO] [stdout]   11:     0x55ddd4a3662b - test::test_main::{{closure}}::he94d679243a7531b
[INFO] [stdout]                                at /rustc/1b7dd2252b99671ce5d1cb9664c5f8636329436d/library/test/src/lib.rs:134:21
[INFO] [stdout]   12:     0x55ddd4a677a4 - <alloc::boxed::Box<F,A> as core::ops::function::Fn<Args>>::call::h3f2d6d8b14c4769f
[INFO] [stdout]                                at /rustc/1b7dd2252b99671ce5d1cb9664c5f8636329436d/library/alloc/src/boxed.rs:1987:9
[INFO] [stdout]   13:     0x55ddd4a677a4 - std::panicking::rust_panic_with_hook::h2bb3722bbaf2f6df
[INFO] [stdout]                                at /rustc/1b7dd2252b99671ce5d1cb9664c5f8636329436d/library/std/src/panicking.rs:695:13
[INFO] [stdout]   14:     0x55ddd4a674d2 - std::panicking::begin_panic_handler::{{closure}}::h91bc7f36a4be011b
[INFO] [stdout]                                at /rustc/1b7dd2252b99671ce5d1cb9664c5f8636329436d/library/std/src/panicking.rs:580:13
[INFO] [stdout]   15:     0x55ddd4a65aa6 - std::sys_common::backtrace::__rust_end_short_backtrace::h8b3d3717114f9e59
[INFO] [stdout]                                at /rustc/1b7dd2252b99671ce5d1cb9664c5f8636329436d/library/std/src/sys_common/backtrace.rs:150:18
[INFO] [stdout]   16:     0x55ddd4a67272 - rust_begin_unwind
[INFO] [stdout]                                at /rustc/1b7dd2252b99671ce5d1cb9664c5f8636329436d/library/std/src/panicking.rs:578:5
[INFO] [stdout]   17:     0x55ddd49cdba3 - core::panicking::panic_fmt::hfd368e3fbdabea26
[INFO] [stdout]                                at /rustc/1b7dd2252b99671ce5d1cb9664c5f8636329436d/library/core/src/panicking.rs:67:14
[INFO] [stdout]   18:     0x55ddd49cdc3d - core::panicking::panic::h3f9042d09bd0bf2e
[INFO] [stdout]                                at /rustc/1b7dd2252b99671ce5d1cb9664c5f8636329436d/library/core/src/panicking.rs:117:5
[INFO] [stdout]   19:     0x55ddd4a013a8 - study_crate::exceptions::tests::test_read_username_from_file::h2d08cacc7d100c6d
[INFO] [stdout]                                at /opt/rustwide/workdir/src/exceptions.rs:78:9
[INFO] [stdout]   20:     0x55ddd4a012c7 - study_crate::exceptions::tests::test_read_username_from_file::{{closure}}::h09c0e82ceacd06bb
[INFO] [stdout]                                at /opt/rustwide/workdir/src/exceptions.rs:76:39
[INFO] [stdout]   21:     0x55ddd49ef085 - core::ops::function::FnOnce::call_once::h446dc68e5a0493a0
[INFO] [stdout]                                at /rustc/1b7dd2252b99671ce5d1cb9664c5f8636329436d/library/core/src/ops/function.rs:250:5
[INFO] [stdout]   22:     0x55ddd4a3b4ff - core::ops::function::FnOnce::call_once::ha6a70e79f7481a7e
[INFO] [stdout]                                at /rustc/1b7dd2252b99671ce5d1cb9664c5f8636329436d/library/core/src/ops/function.rs:250:5
[INFO] [stdout]   23:     0x55ddd4a3b4ff - test::__rust_begin_short_backtrace::hce33033019b61e69
[INFO] [stdout]                                at /rustc/1b7dd2252b99671ce5d1cb9664c5f8636329436d/library/test/src/lib.rs:655:18
[INFO] [stdout]   24:     0x55ddd4a08cec - test::run_test::{{closure}}::h858d3528838ae3e5
[INFO] [stdout]                                at /rustc/1b7dd2252b99671ce5d1cb9664c5f8636329436d/library/test/src/lib.rs:646:30
[INFO] [stdout]   25:     0x55ddd4a08cec - core::ops::function::FnOnce::call_once{{vtable.shim}}::he8ac2b00f01ae79e
[INFO] [stdout]                                at /rustc/1b7dd2252b99671ce5d1cb9664c5f8636329436d/library/core/src/ops/function.rs:250:5
[INFO] [stdout]   26:     0x55ddd4a3a5d6 - <alloc::boxed::Box<F,A> as core::ops::function::FnOnce<Args>>::call_once::h8093d25b522725ef
[INFO] [stdout]                                at /rustc/1b7dd2252b99671ce5d1cb9664c5f8636329436d/library/alloc/src/boxed.rs:1973:9
[INFO] [stdout]   27:     0x55ddd4a3a5d6 - <core::panic::unwind_safe::AssertUnwindSafe<F> as core::ops::function::FnOnce<()>>::call_once::h5c334c204e4a3913
[INFO] [stdout]                                at /rustc/1b7dd2252b99671ce5d1cb9664c5f8636329436d/library/core/src/panic/unwind_safe.rs:271:9
[INFO] [stdout]   28:     0x55ddd4a3a5d6 - std::panicking::try::do_call::ha8b740c7b9478074
[INFO] [stdout]                                at /rustc/1b7dd2252b99671ce5d1cb9664c5f8636329436d/library/std/src/panicking.rs:485:40
[INFO] [stdout]   29:     0x55ddd4a3a5d6 - std::panicking::try::h5d34f63d0e41b64e
[INFO] [stdout]                                at /rustc/1b7dd2252b99671ce5d1cb9664c5f8636329436d/library/std/src/panicking.rs:449:19
[INFO] [stdout]   30:     0x55ddd4a3a5d6 - std::panic::catch_unwind::hcfbb511e1aa7fc67
[INFO] [stdout]                                at /rustc/1b7dd2252b99671ce5d1cb9664c5f8636329436d/library/std/src/panic.rs:140:14
[INFO] [stdout]   31:     0x55ddd4a3a5d6 - test::run_test_in_process::h9abda90f802eaf21
[INFO] [stdout]                                at /rustc/1b7dd2252b99671ce5d1cb9664c5f8636329436d/library/test/src/lib.rs:678:27
[INFO] [stdout]   32:     0x55ddd4a3a5d6 - test::run_test::run_test_inner::{{closure}}::h0f058de91f6c6edf
[INFO] [stdout]                                at /rustc/1b7dd2252b99671ce5d1cb9664c5f8636329436d/library/test/src/lib.rs:572:39
[INFO] [stdout]   33:     0x55ddd4a034f5 - test::run_test::run_test_inner::{{closure}}::h5ca48a4c59c6c1fb
[INFO] [stdout]                                at /rustc/1b7dd2252b99671ce5d1cb9664c5f8636329436d/library/test/src/lib.rs:599:37
[INFO] [stdout]   34:     0x55ddd4a034f5 - std::sys_common::backtrace::__rust_begin_short_backtrace::h32bd51e1495d4a33
[INFO] [stdout]                                at /rustc/1b7dd2252b99671ce5d1cb9664c5f8636329436d/library/std/src/sys_common/backtrace.rs:134:18
[INFO] [stdout]   35:     0x55ddd4a08a31 - std::thread::Builder::spawn_unchecked_::{{closure}}::{{closure}}::hc086fae9b128b2db
[INFO] [stdout]                                at /rustc/1b7dd2252b99671ce5d1cb9664c5f8636329436d/library/std/src/thread/mod.rs:526:17
[INFO] [stdout]   36:     0x55ddd4a08a31 - <core::panic::unwind_safe::AssertUnwindSafe<F> as core::ops::function::FnOnce<()>>::call_once::hb66571888d270d43
[INFO] [stdout]                                at /rustc/1b7dd2252b99671ce5d1cb9664c5f8636329436d/library/core/src/panic/unwind_safe.rs:271:9
[INFO] [stdout]   37:     0x55ddd4a08a31 - std::panicking::try::do_call::h4fa2ef4f6e51fecf
[INFO] [stdout]                                at /rustc/1b7dd2252b99671ce5d1cb9664c5f8636329436d/library/std/src/panicking.rs:485:40
[INFO] [stdout]   38:     0x55ddd4a08a31 - std::panicking::try::h1e9e22b8584489b5
[INFO] [stdout]                                at /rustc/1b7dd2252b99671ce5d1cb9664c5f8636329436d/library/std/src/panicking.rs:449:19
[INFO] [stdout]   39:     0x55ddd4a08a31 - std::panic::catch_unwind::h44698a3de0e0769e
[INFO] [stdout]                                at /rustc/1b7dd2252b99671ce5d1cb9664c5f8636329436d/library/std/src/panic.rs:140:14
[INFO] [stdout]   40:     0x55ddd4a08a31 - std::thread::Builder::spawn_unchecked_::{{closure}}::h50153abde3fe239e
[INFO] [stdout]                                at /rustc/1b7dd2252b99671ce5d1cb9664c5f8636329436d/library/std/src/thread/mod.rs:525:30
[INFO] [stdout]   41:     0x55ddd4a08a31 - core::ops::function::FnOnce::call_once{{vtable.shim}}::hbe5bbf6f38394364
[INFO] [stdout]                                at /rustc/1b7dd2252b99671ce5d1cb9664c5f8636329436d/library/core/src/ops/function.rs:250:5
[INFO] [stdout]   42:     0x55ddd4a6bc75 - <alloc::boxed::Box<F,A> as core::ops::function::FnOnce<Args>>::call_once::h0d83cb2920a49046
[INFO] [stdout]                                at /rustc/1b7dd2252b99671ce5d1cb9664c5f8636329436d/library/alloc/src/boxed.rs:1973:9
[INFO] [stdout]   43:     0x55ddd4a6bc75 - <alloc::boxed::Box<F,A> as core::ops::function::FnOnce<Args>>::call_once::hbe0a008aa7d9ef59
[INFO] [stdout]                                at /rustc/1b7dd2252b99671ce5d1cb9664c5f8636329436d/library/alloc/src/boxed.rs:1973:9
[INFO] [stdout]   44:     0x55ddd4a6bc75 - std::sys::unix::thread::Thread::new::thread_start::h3a466996bdf6b1f9
[INFO] [stdout]                                at /rustc/1b7dd2252b99671ce5d1cb9664c5f8636329436d/library/std/src/sys/unix/thread.rs:108:17
[INFO] [stdout]   45:     0x7f6a6b958b43 - <unknown>
[INFO] [stdout]   46:     0x7f6a6b9e9bb4 - __clone
[INFO] [stdout]   47:                0x0 - <unknown>
[INFO] [stdout] 
[INFO] [stdout] ---- exceptions::tests::test_succinct_read stdout ----
[INFO] [stdout] thread 'exceptions::tests::test_succinct_read' panicked at 'assertion failed: result.is_ok()', src/exceptions.rs:85:9
[INFO] [stdout] stack backtrace:
[INFO] [stdout]    0:     0x55ddd4a6563a - std::backtrace_rs::backtrace::libunwind::trace::h2f05d0192276a8f6
[INFO] [stdout]                                at /rustc/1b7dd2252b99671ce5d1cb9664c5f8636329436d/library/std/src/../../backtrace/src/backtrace/libunwind.rs:93:5
[INFO] [stdout]    1:     0x55ddd4a6563a - std::backtrace_rs::backtrace::trace_unsynchronized::hedc23dff7a1af150
[INFO] [stdout]                                at /rustc/1b7dd2252b99671ce5d1cb9664c5f8636329436d/library/std/src/../../backtrace/src/backtrace/mod.rs:66:5
[INFO] [stdout]    2:     0x55ddd4a6563a - std::sys_common::backtrace::_print_fmt::h17541ef7592f3ce2
[INFO] [stdout]                                at /rustc/1b7dd2252b99671ce5d1cb9664c5f8636329436d/library/std/src/sys_common/backtrace.rs:65:5
[INFO] [stdout]    3:     0x55ddd4a6563a - <std::sys_common::backtrace::_print::DisplayBacktrace as core::fmt::Display>::fmt::h20f75df5ab0c0792
[INFO] [stdout]                                at /rustc/1b7dd2252b99671ce5d1cb9664c5f8636329436d/library/std/src/sys_common/backtrace.rs:44:22
[INFO] [stdout]    4:     0x55ddd4a892df - core::fmt::write::h78109e6f466b3af6
[INFO] [stdout]                                at /rustc/1b7dd2252b99671ce5d1cb9664c5f8636329436d/library/core/src/fmt/mod.rs:1254:17
[INFO] [stdout]    5:     0x55ddd4a62965 - std::io::Write::write_fmt::hd24bfb68a1b35a25
[INFO] [stdout]                                at /rustc/1b7dd2252b99671ce5d1cb9664c5f8636329436d/library/std/src/io/mod.rs:1698:15
[INFO] [stdout]    6:     0x55ddd4a65405 - std::sys_common::backtrace::_print::h8dac57a9f8fbf9a5
[INFO] [stdout]                                at /rustc/1b7dd2252b99671ce5d1cb9664c5f8636329436d/library/std/src/sys_common/backtrace.rs:47:5
[INFO] [stdout]    7:     0x55ddd4a65405 - std::sys_common::backtrace::print::hf9ecbf41d1aa712f
[INFO] [stdout]                                at /rustc/1b7dd2252b99671ce5d1cb9664c5f8636329436d/library/std/src/sys_common/backtrace.rs:34:9
[INFO] [stdout]    8:     0x55ddd4a670be - std::panicking::default_hook::{{closure}}::h04c07acfc84ca028
[INFO] [stdout]                                at /rustc/1b7dd2252b99671ce5d1cb9664c5f8636329436d/library/std/src/panicking.rs:269:22
[INFO] [stdout]    9:     0x55ddd4a66df1 - std::panicking::default_hook::h01f6bb23e1eceb2c
[INFO] [stdout]                                at /rustc/1b7dd2252b99671ce5d1cb9664c5f8636329436d/library/std/src/panicking.rs:285:9
[INFO] [stdout]   10:     0x55ddd4a3662b - <alloc::boxed::Box<F,A> as core::ops::function::Fn<Args>>::call::h87fe9f7b2fd49e4c
[INFO] [stdout]                                at /rustc/1b7dd2252b99671ce5d1cb9664c5f8636329436d/library/alloc/src/boxed.rs:1987:9
[INFO] [stdout]   11:     0x55ddd4a3662b - test::test_main::{{closure}}::he94d679243a7531b
[INFO] [stdout]                                at /rustc/1b7dd2252b99671ce5d1cb9664c5f8636329436d/library/test/src/lib.rs:134:21
[INFO] [stdout]   12:     0x55ddd4a677a4 - <alloc::boxed::Box<F,A> as core::ops::function::Fn<Args>>::call::h3f2d6d8b14c4769f
[INFO] [stdout]                                at /rustc/1b7dd2252b99671ce5d1cb9664c5f8636329436d/library/alloc/src/boxed.rs:1987:9
[INFO] [stdout]   13:     0x55ddd4a677a4 - std::panicking::rust_panic_with_hook::h2bb3722bbaf2f6df
[INFO] [stdout]                                at /rustc/1b7dd2252b99671ce5d1cb9664c5f8636329436d/library/std/src/panicking.rs:695:13
[INFO] [stdout]   14:     0x55ddd4a674d2 - std::panicking::begin_panic_handler::{{closure}}::h91bc7f36a4be011b
[INFO] [stdout]                                at /rustc/1b7dd2252b99671ce5d1cb9664c5f8636329436d/library/std/src/panicking.rs:580:13
[INFO] [stdout]   15:     0x55ddd4a65aa6 - std::sys_common::backtrace::__rust_end_short_backtrace::h8b3d3717114f9e59
[INFO] [stdout]                                at /rustc/1b7dd2252b99671ce5d1cb9664c5f8636329436d/library/std/src/sys_common/backtrace.rs:150:18
[INFO] [stdout]   16:     0x55ddd4a67272 - rust_begin_unwind
[INFO] [stdout]                                at /rustc/1b7dd2252b99671ce5d1cb9664c5f8636329436d/library/std/src/panicking.rs:578:5
[INFO] [stdout]   17:     0x55ddd49cdba3 - core::panicking::panic_fmt::hfd368e3fbdabea26
[INFO] [stdout]                                at /rustc/1b7dd2252b99671ce5d1cb9664c5f8636329436d/library/core/src/panicking.rs:67:14
[INFO] [stdout]   18:     0x55ddd49cdc3d - core::panicking::panic::h3f9042d09bd0bf2e
[INFO] [stdout]                                at /rustc/1b7dd2252b99671ce5d1cb9664c5f8636329436d/library/core/src/panicking.rs:117:5
[INFO] [stdout]   19:     0x55ddd4a015a8 - study_crate::exceptions::tests::test_succinct_read::h1cb224233955add2
[INFO] [stdout]                                at /opt/rustwide/workdir/src/exceptions.rs:85:9
[INFO] [stdout]   20:     0x55ddd4a014c7 - study_crate::exceptions::tests::test_succinct_read::{{closure}}::h69af5fa9332d9e36
[INFO] [stdout]                                at /opt/rustwide/workdir/src/exceptions.rs:83:29
[INFO] [stdout]   21:     0x55ddd49ef245 - core::ops::function::FnOnce::call_once::h70fd9efc7df47f15
[INFO] [stdout]                                at /rustc/1b7dd2252b99671ce5d1cb9664c5f8636329436d/library/core/src/ops/function.rs:250:5
[INFO] [stdout]   22:     0x55ddd4a3b4ff - core::ops::function::FnOnce::call_once::ha6a70e79f7481a7e
[INFO] [stdout]                                at /rustc/1b7dd2252b99671ce5d1cb9664c5f8636329436d/library/core/src/ops/function.rs:250:5
[INFO] [stdout]   23:     0x55ddd4a3b4ff - test::__rust_begin_short_backtrace::hce33033019b61e69
[INFO] [stdout]                                at /rustc/1b7dd2252b99671ce5d1cb9664c5f8636329436d/library/test/src/lib.rs:655:18
[INFO] [stdout]   24:     0x55ddd4a08cec - test::run_test::{{closure}}::h858d3528838ae3e5
[INFO] [stdout]                                at /rustc/1b7dd2252b99671ce5d1cb9664c5f8636329436d/library/test/src/lib.rs:646:30
[INFO] [stdout]   25:     0x55ddd4a08cec - core::ops::function::FnOnce::call_once{{vtable.shim}}::he8ac2b00f01ae79e
[INFO] [stdout]                                at /rustc/1b7dd2252b99671ce5d1cb9664c5f8636329436d/library/core/src/ops/function.rs:250:5
[INFO] [stdout]   26:     0x55ddd4a3a5d6 - <alloc::boxed::Box<F,A> as core::ops::function::FnOnce<Args>>::call_once::h8093d25b522725ef
[INFO] [stdout]                                at /rustc/1b7dd2252b99671ce5d1cb9664c5f8636329436d/library/alloc/src/boxed.rs:1973:9
[INFO] [stdout]   27:     0x55ddd4a3a5d6 - <core::panic::unwind_safe::AssertUnwindSafe<F> as core::ops::function::FnOnce<()>>::call_once::h5c334c204e4a3913
[INFO] [stdout]                                at /rustc/1b7dd2252b99671ce5d1cb9664c5f8636329436d/library/core/src/panic/unwind_safe.rs:271:9
[INFO] [stdout]   28:     0x55ddd4a3a5d6 - std::panicking::try::do_call::ha8b740c7b9478074
[INFO] [stdout]                                at /rustc/1b7dd2252b99671ce5d1cb9664c5f8636329436d/library/std/src/panicking.rs:485:40
[INFO] [stdout]   29:     0x55ddd4a3a5d6 - std::panicking::try::h5d34f63d0e41b64e
[INFO] [stdout]                                at /rustc/1b7dd2252b99671ce5d1cb9664c5f8636329436d/library/std/src/panicking.rs:449:19
[INFO] [stdout]   30:     0x55ddd4a3a5d6 - std::panic::catch_unwind::hcfbb511e1aa7fc67
[INFO] [stdout]                                at /rustc/1b7dd2252b99671ce5d1cb9664c5f8636329436d/library/std/src/panic.rs:140:14
[INFO] [stdout]   31:     0x55ddd4a3a5d6 - test::run_test_in_process::h9abda90f802eaf21
[INFO] [stdout]                                at /rustc/1b7dd2252b99671ce5d1cb9664c5f8636329436d/library/test/src/lib.rs:678:27
[INFO] [stdout]   32:     0x55ddd4a3a5d6 - test::run_test::run_test_inner::{{closure}}::h0f058de91f6c6edf
[INFO] [stdout]                                at /rustc/1b7dd2252b99671ce5d1cb9664c5f8636329436d/library/test/src/lib.rs:572:39
[INFO] [stdout]   33:     0x55ddd4a034f5 - test::run_test::run_test_inner::{{closure}}::h5ca48a4c59c6c1fb
[INFO] [stdout]                                at /rustc/1b7dd2252b99671ce5d1cb9664c5f8636329436d/library/test/src/lib.rs:599:37
[INFO] [stdout]   34:     0x55ddd4a034f5 - std::sys_common::backtrace::__rust_begin_short_backtrace::h32bd51e1495d4a33
[INFO] [stdout]                                at /rustc/1b7dd2252b99671ce5d1cb9664c5f8636329436d/library/std/src/sys_common/backtrace.rs:134:18
[INFO] [stdout]   35:     0x55ddd4a08a31 - std::thread::Builder::spawn_unchecked_::{{closure}}::{{closure}}::hc086fae9b128b2db
[INFO] [stdout]                                at /rustc/1b7dd2252b99671ce5d1cb9664c5f8636329436d/library/std/src/thread/mod.rs:526:17
[INFO] [stdout]   36:     0x55ddd4a08a31 - <core::panic::unwind_safe::AssertUnwindSafe<F> as core::ops::function::FnOnce<()>>::call_once::hb66571888d270d43
[INFO] [stdout]                                at /rustc/1b7dd2252b99671ce5d1cb9664c5f8636329436d/library/core/src/panic/unwind_safe.rs:271:9
[INFO] [stdout]   37:     0x55ddd4a08a31 - std::panicking::try::do_call::h4fa2ef4f6e51fecf
[INFO] [stdout]                                at /rustc/1b7dd2252b99671ce5d1cb9664c5f8636329436d/library/std/src/panicking.rs:485:40
[INFO] [stdout]   38:     0x55ddd4a08a31 - std::panicking::try::h1e9e22b8584489b5
[INFO] [stdout]                                at /rustc/1b7dd2252b99671ce5d1cb9664c5f8636329436d/library/std/src/panicking.rs:449:19
[INFO] [stdout]   39:     0x55ddd4a08a31 - std::panic::catch_unwind::h44698a3de0e0769e
[INFO] [stdout]                                at /rustc/1b7dd2252b99671ce5d1cb9664c5f8636329436d/library/std/src/panic.rs:140:14
[INFO] [stdout]   40:     0x55ddd4a08a31 - std::thread::Builder::spawn_unchecked_::{{closure}}::h50153abde3fe239e
[INFO] [stdout]                                at /rustc/1b7dd2252b99671ce5d1cb9664c5f8636329436d/library/std/src/thread/mod.rs:525:30
[INFO] [stdout]   41:     0x55ddd4a08a31 - core::ops::function::FnOnce::call_once{{vtable.shim}}::hbe5bbf6f38394364
[INFO] [stdout]                                at /rustc/1b7dd2252b99671ce5d1cb9664c5f8636329436d/library/core/src/ops/function.rs:250:5
[INFO] [stdout]   42:     0x55ddd4a6bc75 - <alloc::boxed::Box<F,A> as core::ops::function::FnOnce<Args>>::call_once::h0d83cb2920a49046
[INFO] [stdout]                                at /rustc/1b7dd2252b99671ce5d1cb9664c5f8636329436d/library/alloc/src/boxed.rs:1973:9
[INFO] [stdout]   43:     0x55ddd4a6bc75 - <alloc::boxed::Box<F,A> as core::ops::function::FnOnce<Args>>::call_once::hbe0a008aa7d9ef59
[INFO] [stdout]                                at /rustc/1b7dd2252b99671ce5d1cb9664c5f8636329436d/library/alloc/src/boxed.rs:1973:9
[INFO] [stdout]   44:     0x55ddd4a6bc75 - std::sys::unix::thread::Thread::new::thread_start::h3a466996bdf6b1f9
[INFO] [stdout]                                at /rustc/1b7dd2252b99671ce5d1cb9664c5f8636329436d/library/std/src/sys/unix/thread.rs:108:17
[INFO] [stdout]   45:     0x7f6a6b958b43 - <unknown>
[INFO] [stdout]   46:     0x7f6a6b9e9bb4 - __clone
[INFO] [stdout]   47:                0x0 - <unknown>
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] failures:
[INFO] [stdout]     exceptions::tests::test_read_username_from_file
[INFO] [stdout]     exceptions::tests::test_succinct_read
[INFO] [stdout] 
[INFO] [stdout] test result: FAILED. 34 passed; 2 failed; 0 ignored; 0 measured; 0 filtered out; finished in 4.05s
[INFO] [stdout] 
[INFO] running `Command { std: "docker" "inspect" "fadf4406a7fd21a708132a6d78497202bccd2ff012eb8682cfab1a71dcb35689", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "fadf4406a7fd21a708132a6d78497202bccd2ff012eb8682cfab1a71dcb35689", kill_on_drop: false }`
[INFO] [stdout] fadf4406a7fd21a708132a6d78497202bccd2ff012eb8682cfab1a71dcb35689
