[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-2024-12-08 for beta-1.84.0-4-retry
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FMedsko%2Fstudy-crate" "/workspace/builds/worker-7-tc2/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-7-tc2/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/Medsko/study-crate on toolchain beta-2024-12-08
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+beta-2024-12-08" "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-7-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-2024-12-08" "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-7-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-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:f3a9d4ad9d972b27faf3965f35b62e55ba32bbce8f20bc8fe909558a86702fde" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2024-12-08" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] ffead1bdb9bab6ef2e67ee6d2d27d936de135ec04ec2d637ace92628d9da2de5
[INFO] running `Command { std: "docker" "start" "-a" "ffead1bdb9bab6ef2e67ee6d2d27d936de135ec04ec2d637ace92628d9da2de5", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "ffead1bdb9bab6ef2e67ee6d2d27d936de135ec04ec2d637ace92628d9da2de5", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "ffead1bdb9bab6ef2e67ee6d2d27d936de135ec04ec2d637ace92628d9da2de5", kill_on_drop: false }`
[INFO] [stdout] ffead1bdb9bab6ef2e67ee6d2d27d936de135ec04ec2d637ace92628d9da2de5
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-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:f3a9d4ad9d972b27faf3965f35b62e55ba32bbce8f20bc8fe909558a86702fde" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2024-12-08" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 24a3ba161e1ffe4ff4c68b63afd750e5a1ef56653059ede29b80ab7711e398f3
[INFO] running `Command { std: "docker" "start" "-a" "24a3ba161e1ffe4ff4c68b63afd750e5a1ef56653059ede29b80ab7711e398f3", 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: struct `Rectangle` is never constructed
[INFO] [stdout]   --> src/prepackages/structs.rs:49:8
[INFO] [stdout]    |
[INFO] [stdout] 49 | struct Rectangle {
[INFO] [stdout]    |        ^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct `Circle` is never constructed
[INFO] [stdout]   --> src/prepackages/structs.rs:55:8
[INFO] [stdout]    |
[INFO] [stdout] 55 | struct Circle {
[INFO] [stdout]    |        ^^^^^^
[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: enum `IpAddrKind` is never used
[INFO] [stdout]  --> src/prepackages/enums/enums.rs:5:6
[INFO] [stdout]   |
[INFO] [stdout] 5 | enum IpAddrKind {
[INFO] [stdout]   |      ^^^^^^^^^^
[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: struct `IpAddr` is never constructed
[INFO] [stdout]   --> src/prepackages/enums/enums.rs:37:8
[INFO] [stdout]    |
[INFO] [stdout] 37 | struct IpAddr {
[INFO] [stdout]    |        ^^^^^^
[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: enum `UsState` is never used
[INFO] [stdout]  --> src/prepackages/enums/matching.rs:3:6
[INFO] [stdout]   |
[INFO] [stdout] 3 | enum UsState {
[INFO] [stdout]   |      ^^^^^^^
[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: call to `.clone()` on a reference in this situation does nothing
[INFO] [stdout]   --> src/lib.rs:42:21
[INFO] [stdout]    |
[INFO] [stdout] 42 |         let copy = i.clone();
[INFO] [stdout]    |                     ^^^^^^^^ help: remove this redundant call
[INFO] [stdout]    |
[INFO] [stdout]    = note: the type `T` does not implement `Clone`, so calling `clone` on `&T` copies the reference, which does not do anything and can be removed
[INFO] [stdout]    = note: `#[warn(noop_method_call)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 3.82s
[INFO] running `Command { std: "docker" "inspect" "24a3ba161e1ffe4ff4c68b63afd750e5a1ef56653059ede29b80ab7711e398f3", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "24a3ba161e1ffe4ff4c68b63afd750e5a1ef56653059ede29b80ab7711e398f3", kill_on_drop: false }`
[INFO] [stdout] 24a3ba161e1ffe4ff4c68b63afd750e5a1ef56653059ede29b80ab7711e398f3
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-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:f3a9d4ad9d972b27faf3965f35b62e55ba32bbce8f20bc8fe909558a86702fde" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2024-12-08" "test" "--frozen" "--no-run" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 0516d69a1e3622dac959bb9aa690421dbba3b08f0c54d79a86f7073cbc1e4591
[INFO] running `Command { std: "docker" "start" "-a" "0516d69a1e3622dac959bb9aa690421dbba3b08f0c54d79a86f7073cbc1e4591", 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: struct `Rectangle` is never constructed
[INFO] [stdout]   --> src/prepackages/structs.rs:49:8
[INFO] [stdout]    |
[INFO] [stdout] 49 | struct Rectangle {
[INFO] [stdout]    |        ^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct `Circle` is never constructed
[INFO] [stdout]   --> src/prepackages/structs.rs:55:8
[INFO] [stdout]    |
[INFO] [stdout] 55 | struct Circle {
[INFO] [stdout]    |        ^^^^^^
[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] [stderr]    Compiling study-crate v0.1.0 (/opt/rustwide/workdir)
[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: enum `IpAddrKind` is never used
[INFO] [stdout]  --> src/prepackages/enums/enums.rs:5:6
[INFO] [stdout]   |
[INFO] [stdout] 5 | enum IpAddrKind {
[INFO] [stdout]   |      ^^^^^^^^^^
[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: struct `IpAddr` is never constructed
[INFO] [stdout]   --> src/prepackages/enums/enums.rs:37:8
[INFO] [stdout]    |
[INFO] [stdout] 37 | struct IpAddr {
[INFO] [stdout]    |        ^^^^^^
[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: enum `UsState` is never used
[INFO] [stdout]  --> src/prepackages/enums/matching.rs:3:6
[INFO] [stdout]   |
[INFO] [stdout] 3 | enum UsState {
[INFO] [stdout]   |      ^^^^^^^
[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: call to `.clone()` on a reference in this situation does nothing
[INFO] [stdout]   --> src/lib.rs:42:21
[INFO] [stdout]    |
[INFO] [stdout] 42 |         let copy = i.clone();
[INFO] [stdout]    |                     ^^^^^^^^ help: remove this redundant call
[INFO] [stdout]    |
[INFO] [stdout]    = note: the type `T` does not implement `Clone`, so calling `clone` on `&T` copies the reference, which does not do anything and can be removed
[INFO] [stdout]    = note: `#[warn(noop_method_call)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[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: struct `Rectangle` is never constructed
[INFO] [stdout]   --> src/prepackages/structs.rs:49:8
[INFO] [stdout]    |
[INFO] [stdout] 49 | struct Rectangle {
[INFO] [stdout]    |        ^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct `Circle` is never constructed
[INFO] [stdout]   --> src/prepackages/structs.rs:55:8
[INFO] [stdout]    |
[INFO] [stdout] 55 | struct Circle {
[INFO] [stdout]    |        ^^^^^^
[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: enum `IpAddrKind` is never used
[INFO] [stdout]  --> src/prepackages/enums/enums.rs:5:6
[INFO] [stdout]   |
[INFO] [stdout] 5 | enum IpAddrKind {
[INFO] [stdout]   |      ^^^^^^^^^^
[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: struct `IpAddr` is never constructed
[INFO] [stdout]   --> src/prepackages/enums/enums.rs:37:8
[INFO] [stdout]    |
[INFO] [stdout] 37 | struct IpAddr {
[INFO] [stdout]    |        ^^^^^^
[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: enum `UsState` is never used
[INFO] [stdout]  --> src/prepackages/enums/matching.rs:3:6
[INFO] [stdout]   |
[INFO] [stdout] 3 | enum UsState {
[INFO] [stdout]   |      ^^^^^^^
[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: call to `.clone()` on a reference in this situation does nothing
[INFO] [stdout]   --> src/lib.rs:42:21
[INFO] [stdout]    |
[INFO] [stdout] 42 |         let copy = i.clone();
[INFO] [stdout]    |                     ^^^^^^^^ help: remove this redundant call
[INFO] [stdout]    |
[INFO] [stdout]    = note: the type `T` does not implement `Clone`, so calling `clone` on `&T` copies the reference, which does not do anything and can be removed
[INFO] [stdout]    = note: `#[warn(noop_method_call)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `test` profile [unoptimized + debuginfo] target(s) in 1.00s
[INFO] running `Command { std: "docker" "inspect" "0516d69a1e3622dac959bb9aa690421dbba3b08f0c54d79a86f7073cbc1e4591", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "0516d69a1e3622dac959bb9aa690421dbba3b08f0c54d79a86f7073cbc1e4591", kill_on_drop: false }`
[INFO] [stdout] 0516d69a1e3622dac959bb9aa690421dbba3b08f0c54d79a86f7073cbc1e4591
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-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:f3a9d4ad9d972b27faf3965f35b62e55ba32bbce8f20bc8fe909558a86702fde" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2024-12-08" "test" "--frozen", kill_on_drop: false }`
[INFO] [stdout] 691d3f2b1c93046faa485423160c262114fe7168fa96fc8a8006f01725e954d9
[INFO] running `Command { std: "docker" "start" "-a" "691d3f2b1c93046faa485423160c262114fe7168fa96fc8a8006f01725e954d9", 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: struct `Rectangle` is never constructed
[INFO] [stderr]   --> src/prepackages/structs.rs:49:8
[INFO] [stderr]    |
[INFO] [stderr] 49 | struct Rectangle {
[INFO] [stderr]    |        ^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: struct `Circle` is never constructed
[INFO] [stderr]   --> src/prepackages/structs.rs:55:8
[INFO] [stderr]    |
[INFO] [stderr] 55 | struct Circle {
[INFO] [stderr]    |        ^^^^^^
[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: enum `IpAddrKind` is never used
[INFO] [stderr]  --> src/prepackages/enums/enums.rs:5:6
[INFO] [stderr]   |
[INFO] [stderr] 5 | enum IpAddrKind {
[INFO] [stderr]   |      ^^^^^^^^^^
[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: struct `IpAddr` is never constructed
[INFO] [stderr]   --> src/prepackages/enums/enums.rs:37:8
[INFO] [stderr]    |
[INFO] [stderr] 37 | struct IpAddr {
[INFO] [stderr]    |        ^^^^^^
[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: enum `UsState` is never used
[INFO] [stderr]  --> src/prepackages/enums/matching.rs:3:6
[INFO] [stderr]   |
[INFO] [stderr] 3 | enum UsState {
[INFO] [stderr]   |      ^^^^^^^
[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: call to `.clone()` on a reference in this situation does nothing
[INFO] [stderr]   --> src/lib.rs:42:21
[INFO] [stderr]    |
[INFO] [stderr] 42 |         let copy = i.clone();
[INFO] [stderr]    |                     ^^^^^^^^ help: remove this redundant call
[INFO] [stderr]    |
[INFO] [stderr]    = note: the type `T` does not implement `Clone`, so calling `clone` on `&T` copies the reference, which does not do anything and can be removed
[INFO] [stderr]    = note: `#[warn(noop_method_call)]` on by default
[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 59 warnings (run `cargo fix --lib -p study-crate` to apply 1 suggestion)
[INFO] [stderr] warning: `study-crate` (lib test) generated 56 warnings (54 duplicates)
[INFO] [stderr]     Finished `test` profile [unoptimized + debuginfo] target(s) in 0.02s
[INFO] [stderr]      Running unittests src/lib.rs (/opt/rustwide/target/debug/deps/study_crate-4075fe09e396a4c6)
[INFO] [stdout] 
[INFO] [stdout] running 8 tests
[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 collections::strings::tests::to_pig_latin_identifies_vowel ... ok
[INFO] [stdout] test prepackages::ownership::tests::slice_first_word_returns_entire_word ... 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::gg::tests::panics_on_greater_than_100 - should panic ... ok
[INFO] [stdout] test prepackages::gg::tests::panics_on_smaller_than_1 - should panic ... ok
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 8 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out; finished in 0.02s
[INFO] [stdout] 
[INFO] [stderr]      Running unittests src/main.rs (/opt/rustwide/target/debug/deps/study_crate-c53563ebb182c577)
[INFO] [stdout] 
[INFO] [stdout] running 36 tests
[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 collections::strings::tests::to_pig_latin_identifies_vowel ... ok
[INFO] [stdout] test concurrent::channel::tests::test_the_waters ... ok
[INFO] [stdout] test concurrent::lock::tests::test_get_that_lock ... ok
[INFO] [stdout] test concurrent::classic::tests::vec_moves ... ok
[INFO] [stdout] test fp::closures::tests::call_with_different_values ... ok
[INFO] [stdout] test fp::patterns::tests::be_unintuitive ... ok
[INFO] [stdout] test fp::patterns::tests::call_destructuring_function ... ok
[INFO] [stdout] test fp::patterns::tests::destructure_tuple ... ok
[INFO] [stdout] test generics::functions::tests::test_find_largest ... 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 oop::rust_states_lib::tests::test_blog_lifecycle ... ok
[INFO] [stdout] test oop::rust_states_lib::tests::test_private_constructor ... ok
[INFO] [stdout] test concurrent::lock::tests::test_contested_lock ... ok
[INFO] [stdout] test pointers::smart::tests::first_box ... ok
[INFO] [stdout] test pointers::smart::tests::multiple_references_cons ... ok
[INFO] [stdout] test fp::closures::tests::move_value_closure ... ok
[INFO] [stdout] test pointers::smart::tests::say_hello ... ok
[INFO] [stdout] test pointers::smart::tests::drop_it_like_it_is_out_of_scope ... ok
[INFO] [stdout] test oop::states::tests::test_blog_lifecycle ... ok
[INFO] [stdout] test pointers::smart::tests::early_drop ... ok
[INFO] [stdout] test prepackages::ownership::tests::slice_first_word_returns_entire_word ... ok
[INFO] [stdout] test prepackages::ownership::tests::slice_first_word_returns_first ... ok
[INFO] [stdout] test concurrent::classic::tests::concurrency_is_black_magic ... ok
[INFO] [stdout] test exceptions::tests::test_read_username_from_file ... FAILED
[INFO] [stdout] test exceptions::tests::test_succinct_read ... FAILED
[INFO] [stdout] test prepackages::gg::tests::panics_on_greater_than_100 - should panic ... 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_out_to_sea ... ok
[INFO] [stdout] test concurrent::channel::tests::get_far_out ... ok
[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 src/exceptions.rs:78:9:
[INFO] [stdout] assertion failed: result.is_ok()
[INFO] [stdout] stack backtrace:
[INFO] [stdout]    0:     0x56970cad7eca - std::backtrace_rs::backtrace::libunwind::trace::h8810477743020387
[INFO] [stdout]                                at /rustc/202008a1b8de96d2e5b6bc02d379db03a877d34d/library/std/src/../../backtrace/src/backtrace/libunwind.rs:116:5
[INFO] [stdout]    1:     0x56970cad7eca - std::backtrace_rs::backtrace::trace_unsynchronized::h3aa55355dd6c54a6
[INFO] [stdout]                                at /rustc/202008a1b8de96d2e5b6bc02d379db03a877d34d/library/std/src/../../backtrace/src/backtrace/mod.rs:66:5
[INFO] [stdout]    2:     0x56970cad7eca - std::sys::backtrace::_print_fmt::h8588b0f62410823f
[INFO] [stdout]                                at /rustc/202008a1b8de96d2e5b6bc02d379db03a877d34d/library/std/src/sys/backtrace.rs:66:9
[INFO] [stdout]    3:     0x56970cad7eca - <std::sys::backtrace::BacktraceLock::print::DisplayBacktrace as core::fmt::Display>::fmt::h98c26ac25ffe89bb
[INFO] [stdout]                                at /rustc/202008a1b8de96d2e5b6bc02d379db03a877d34d/library/std/src/sys/backtrace.rs:39:26
[INFO] [stdout]    4:     0x56970cafda83 - core::fmt::rt::Argument::fmt::hf95377f4aebd453b
[INFO] [stdout]                                at /rustc/202008a1b8de96d2e5b6bc02d379db03a877d34d/library/core/src/fmt/rt.rs:177:76
[INFO] [stdout]    5:     0x56970cafda83 - core::fmt::write::h0dd5f6e2238c7982
[INFO] [stdout]                                at /rustc/202008a1b8de96d2e5b6bc02d379db03a877d34d/library/core/src/fmt/mod.rs:1189:21
[INFO] [stdout]    6:     0x56970cad5063 - std::io::Write::write_fmt::h03bb0ca26e6faf8c
[INFO] [stdout]                                at /rustc/202008a1b8de96d2e5b6bc02d379db03a877d34d/library/std/src/io/mod.rs:1884:15
[INFO] [stdout]    7:     0x56970cad7d12 - std::sys::backtrace::BacktraceLock::print::h5c19c1c038ee186d
[INFO] [stdout]                                at /rustc/202008a1b8de96d2e5b6bc02d379db03a877d34d/library/std/src/sys/backtrace.rs:42:9
[INFO] [stdout]    8:     0x56970cad934d - std::panicking::default_hook::{{closure}}::h77172f079a1fcb13
[INFO] [stdout]                                at /rustc/202008a1b8de96d2e5b6bc02d379db03a877d34d/library/std/src/panicking.rs:268:22
[INFO] [stdout]    9:     0x56970cad9157 - std::panicking::default_hook::he5f8e3b203ccddba
[INFO] [stdout]                                at /rustc/202008a1b8de96d2e5b6bc02d379db03a877d34d/library/std/src/panicking.rs:292:9
[INFO] [stdout]   10:     0x56970caa0a97 - <alloc::boxed::Box<F,A> as core::ops::function::Fn<Args>>::call::h7a3c7b4a1ae77f2f
[INFO] [stdout]                                at /rustc/202008a1b8de96d2e5b6bc02d379db03a877d34d/library/alloc/src/boxed.rs:1986:9
[INFO] [stdout]   11:     0x56970caa0a97 - test::test_main::{{closure}}::hf0d3b69ae9b353d1
[INFO] [stdout]                                at /rustc/202008a1b8de96d2e5b6bc02d379db03a877d34d/library/test/src/lib.rs:134:21
[INFO] [stdout]   12:     0x56970cad99f8 - <alloc::boxed::Box<F,A> as core::ops::function::Fn<Args>>::call::h6332e82e7b189abd
[INFO] [stdout]                                at /rustc/202008a1b8de96d2e5b6bc02d379db03a877d34d/library/alloc/src/boxed.rs:1986:9
[INFO] [stdout]   13:     0x56970cad99f8 - std::panicking::rust_panic_with_hook::h53863d4e9018df39
[INFO] [stdout]                                at /rustc/202008a1b8de96d2e5b6bc02d379db03a877d34d/library/std/src/panicking.rs:809:13
[INFO] [stdout]   14:     0x56970cad9786 - std::panicking::begin_panic_handler::{{closure}}::h67280e6fa0757873
[INFO] [stdout]                                at /rustc/202008a1b8de96d2e5b6bc02d379db03a877d34d/library/std/src/panicking.rs:667:13
[INFO] [stdout]   15:     0x56970cad83a9 - std::sys::backtrace::__rust_end_short_backtrace::h1dac3f54d6fbbeb2
[INFO] [stdout]                                at /rustc/202008a1b8de96d2e5b6bc02d379db03a877d34d/library/std/src/sys/backtrace.rs:170:18
[INFO] [stdout]   16:     0x56970cad944c - rust_begin_unwind
[INFO] [stdout]                                at /rustc/202008a1b8de96d2e5b6bc02d379db03a877d34d/library/std/src/panicking.rs:665:5
[INFO] [stdout]   17:     0x56970ca30ab0 - core::panicking::panic_fmt::h6792bd1b2bf01041
[INFO] [stdout]                                at /rustc/202008a1b8de96d2e5b6bc02d379db03a877d34d/library/core/src/panicking.rs:76:14
[INFO] [stdout]   18:     0x56970ca30b3c - core::panicking::panic::hbb5c236a846c507c
[INFO] [stdout]                                at /rustc/202008a1b8de96d2e5b6bc02d379db03a877d34d/library/core/src/panicking.rs:148:5
[INFO] [stdout]   19:     0x56970ca45eb5 - study_crate::exceptions::tests::test_read_username_from_file::hb171c215099e1e39
[INFO] [stdout]                                at /opt/rustwide/workdir/src/exceptions.rs:78:9
[INFO] [stdout]   20:     0x56970ca45df7 - study_crate::exceptions::tests::test_read_username_from_file::{{closure}}::ha9f67713baca023e
[INFO] [stdout]                                at /opt/rustwide/workdir/src/exceptions.rs:76:38
[INFO] [stdout]   21:     0x56970ca5e106 - core::ops::function::FnOnce::call_once::h236ede7ccdd05ba2
[INFO] [stdout]                                at /rustc/202008a1b8de96d2e5b6bc02d379db03a877d34d/library/core/src/ops/function.rs:250:5
[INFO] [stdout]   22:     0x56970caa55bb - core::ops::function::FnOnce::call_once::h871bf86719ec9aa4
[INFO] [stdout]                                at /rustc/202008a1b8de96d2e5b6bc02d379db03a877d34d/library/core/src/ops/function.rs:250:5
[INFO] [stdout]   23:     0x56970caa55bb - test::__rust_begin_short_backtrace::h2167df1e2b7d76fd
[INFO] [stdout]                                at /rustc/202008a1b8de96d2e5b6bc02d379db03a877d34d/library/test/src/lib.rs:632:18
[INFO] [stdout]   24:     0x56970caa4fa8 - test::run_test_in_process::{{closure}}::h15d92f75a3adfb79
[INFO] [stdout]                                at /rustc/202008a1b8de96d2e5b6bc02d379db03a877d34d/library/test/src/lib.rs:655:60
[INFO] [stdout]   25:     0x56970caa4fa8 - <core::panic::unwind_safe::AssertUnwindSafe<F> as core::ops::function::FnOnce<()>>::call_once::hb6c8955835a8dbbb
[INFO] [stdout]                                at /rustc/202008a1b8de96d2e5b6bc02d379db03a877d34d/library/core/src/panic/unwind_safe.rs:272:9
[INFO] [stdout]   26:     0x56970caa4fa8 - std::panicking::try::do_call::hc79d0fc888a0bd30
[INFO] [stdout]                                at /rustc/202008a1b8de96d2e5b6bc02d379db03a877d34d/library/std/src/panicking.rs:557:40
[INFO] [stdout]   27:     0x56970caa4fa8 - std::panicking::try::hb8a7878e3a8589d6
[INFO] [stdout]                                at /rustc/202008a1b8de96d2e5b6bc02d379db03a877d34d/library/std/src/panicking.rs:520:19
[INFO] [stdout]   28:     0x56970caa4fa8 - std::panic::catch_unwind::hb8e4600ff0ff5cfa
[INFO] [stdout]                                at /rustc/202008a1b8de96d2e5b6bc02d379db03a877d34d/library/std/src/panic.rs:358:14
[INFO] [stdout]   29:     0x56970caa4fa8 - test::run_test_in_process::hc2900b0b18688dd6
[INFO] [stdout]                                at /rustc/202008a1b8de96d2e5b6bc02d379db03a877d34d/library/test/src/lib.rs:655:27
[INFO] [stdout]   30:     0x56970caa4fa8 - test::run_test::{{closure}}::hac2a9cb07be3d48d
[INFO] [stdout]                                at /rustc/202008a1b8de96d2e5b6bc02d379db03a877d34d/library/test/src/lib.rs:576:43
[INFO] [stdout]   31:     0x56970ca68a4a - test::run_test::{{closure}}::h4a5b729e66a38cd8
[INFO] [stdout]                                at /rustc/202008a1b8de96d2e5b6bc02d379db03a877d34d/library/test/src/lib.rs:606:41
[INFO] [stdout]   32:     0x56970ca68a4a - std::sys::backtrace::__rust_begin_short_backtrace::h0496fb742492f573
[INFO] [stdout]                                at /rustc/202008a1b8de96d2e5b6bc02d379db03a877d34d/library/std/src/sys/backtrace.rs:154:18
[INFO] [stdout]   33:     0x56970ca6c3c4 - std::thread::Builder::spawn_unchecked_::{{closure}}::{{closure}}::hbb6d257c550a54bd
[INFO] [stdout]                                at /rustc/202008a1b8de96d2e5b6bc02d379db03a877d34d/library/std/src/thread/mod.rs:561:17
[INFO] [stdout]   34:     0x56970ca6c3c4 - <core::panic::unwind_safe::AssertUnwindSafe<F> as core::ops::function::FnOnce<()>>::call_once::h46696fe4a6832328
[INFO] [stdout]                                at /rustc/202008a1b8de96d2e5b6bc02d379db03a877d34d/library/core/src/panic/unwind_safe.rs:272:9
[INFO] [stdout]   35:     0x56970ca6c3c4 - std::panicking::try::do_call::h2625a51b667bfb64
[INFO] [stdout]                                at /rustc/202008a1b8de96d2e5b6bc02d379db03a877d34d/library/std/src/panicking.rs:557:40
[INFO] [stdout]   36:     0x56970ca6c3c4 - std::panicking::try::hb956a59a1973aa4c
[INFO] [stdout]                                at /rustc/202008a1b8de96d2e5b6bc02d379db03a877d34d/library/std/src/panicking.rs:520:19
[INFO] [stdout]   37:     0x56970ca6c3c4 - std::panic::catch_unwind::h64f3b9d1067ef6a0
[INFO] [stdout]                                at /rustc/202008a1b8de96d2e5b6bc02d379db03a877d34d/library/std/src/panic.rs:358:14
[INFO] [stdout]   38:     0x56970ca6c3c4 - std::thread::Builder::spawn_unchecked_::{{closure}}::h42b2841295b6c0b2
[INFO] [stdout]                                at /rustc/202008a1b8de96d2e5b6bc02d379db03a877d34d/library/std/src/thread/mod.rs:559:30
[INFO] [stdout]   39:     0x56970ca6c3c4 - core::ops::function::FnOnce::call_once{{vtable.shim}}::h6127de71b8124639
[INFO] [stdout]                                at /rustc/202008a1b8de96d2e5b6bc02d379db03a877d34d/library/core/src/ops/function.rs:250:5
[INFO] [stdout]   40:     0x56970cadd94b - <alloc::boxed::Box<F,A> as core::ops::function::FnOnce<Args>>::call_once::h42f0ba71002a1b2c
[INFO] [stdout]                                at /rustc/202008a1b8de96d2e5b6bc02d379db03a877d34d/library/alloc/src/boxed.rs:1972:9
[INFO] [stdout]   41:     0x56970cadd94b - <alloc::boxed::Box<F,A> as core::ops::function::FnOnce<Args>>::call_once::had9e47d7a3dcecb8
[INFO] [stdout]                                at /rustc/202008a1b8de96d2e5b6bc02d379db03a877d34d/library/alloc/src/boxed.rs:1972:9
[INFO] [stdout]   42:     0x56970cadd94b - std::sys::pal::unix::thread::Thread::new::thread_start::h48cf765408f6f5f2
[INFO] [stdout]                                at /rustc/202008a1b8de96d2e5b6bc02d379db03a877d34d/library/std/src/sys/pal/unix/thread.rs:105:17
[INFO] [stdout]   43:     0x7db2f7180ac3 - <unknown>
[INFO] [stdout]   44:     0x7db2f7211a04 - clone
[INFO] [stdout]   45:                0x0 - <unknown>
[INFO] [stdout] 
[INFO] [stdout] ---- exceptions::tests::test_succinct_read stdout ----
[INFO] [stdout] thread 'exceptions::tests::test_succinct_read' panicked at src/exceptions.rs:85:9:
[INFO] [stdout] assertion failed: result.is_ok()
[INFO] [stdout] stack backtrace:
[INFO] [stdout]    0:     0x56970cad7eca - std::backtrace_rs::backtrace::libunwind::trace::h8810477743020387
[INFO] [stdout]                                at /rustc/202008a1b8de96d2e5b6bc02d379db03a877d34d/library/std/src/../../backtrace/src/backtrace/libunwind.rs:116:5
[INFO] [stdout]    1:     0x56970cad7eca - std::backtrace_rs::backtrace::trace_unsynchronized::h3aa55355dd6c54a6
[INFO] [stdout]                                at /rustc/202008a1b8de96d2e5b6bc02d379db03a877d34d/library/std/src/../../backtrace/src/backtrace/mod.rs:66:5
[INFO] [stdout]    2:     0x56970cad7eca - std::sys::backtrace::_print_fmt::h8588b0f62410823f
[INFO] [stdout]                                at /rustc/202008a1b8de96d2e5b6bc02d379db03a877d34d/library/std/src/sys/backtrace.rs:66:9
[INFO] [stdout]    3:     0x56970cad7eca - <std::sys::backtrace::BacktraceLock::print::DisplayBacktrace as core::fmt::Display>::fmt::h98c26ac25ffe89bb
[INFO] [stdout]                                at /rustc/202008a1b8de96d2e5b6bc02d379db03a877d34d/library/std/src/sys/backtrace.rs:39:26
[INFO] [stdout]    4:     0x56970cafda83 - core::fmt::rt::Argument::fmt::hf95377f4aebd453b
[INFO] [stdout]                                at /rustc/202008a1b8de96d2e5b6bc02d379db03a877d34d/library/core/src/fmt/rt.rs:177:76
[INFO] [stdout]    5:     0x56970cafda83 - core::fmt::write::h0dd5f6e2238c7982
[INFO] [stdout]                                at /rustc/202008a1b8de96d2e5b6bc02d379db03a877d34d/library/core/src/fmt/mod.rs:1189:21
[INFO] [stdout]    6:     0x56970cad5063 - std::io::Write::write_fmt::h03bb0ca26e6faf8c
[INFO] [stdout]                                at /rustc/202008a1b8de96d2e5b6bc02d379db03a877d34d/library/std/src/io/mod.rs:1884:15
[INFO] [stdout]    7:     0x56970cad7d12 - std::sys::backtrace::BacktraceLock::print::h5c19c1c038ee186d
[INFO] [stdout]                                at /rustc/202008a1b8de96d2e5b6bc02d379db03a877d34d/library/std/src/sys/backtrace.rs:42:9
[INFO] [stdout]    8:     0x56970cad934d - std::panicking::default_hook::{{closure}}::h77172f079a1fcb13
[INFO] [stdout]                                at /rustc/202008a1b8de96d2e5b6bc02d379db03a877d34d/library/std/src/panicking.rs:268:22
[INFO] [stdout]    9:     0x56970cad9157 - std::panicking::default_hook::he5f8e3b203ccddba
[INFO] [stdout]                                at /rustc/202008a1b8de96d2e5b6bc02d379db03a877d34d/library/std/src/panicking.rs:292:9
[INFO] [stdout]   10:     0x56970caa0a97 - <alloc::boxed::Box<F,A> as core::ops::function::Fn<Args>>::call::h7a3c7b4a1ae77f2f
[INFO] [stdout]                                at /rustc/202008a1b8de96d2e5b6bc02d379db03a877d34d/library/alloc/src/boxed.rs:1986:9
[INFO] [stdout]   11:     0x56970caa0a97 - test::test_main::{{closure}}::hf0d3b69ae9b353d1
[INFO] [stdout]                                at /rustc/202008a1b8de96d2e5b6bc02d379db03a877d34d/library/test/src/lib.rs:134:21
[INFO] [stdout]   12:     0x56970cad99f8 - <alloc::boxed::Box<F,A> as core::ops::function::Fn<Args>>::call::h6332e82e7b189abd
[INFO] [stdout]                                at /rustc/202008a1b8de96d2e5b6bc02d379db03a877d34d/library/alloc/src/boxed.rs:1986:9
[INFO] [stdout]   13:     0x56970cad99f8 - std::panicking::rust_panic_with_hook::h53863d4e9018df39
[INFO] [stdout]                                at /rustc/202008a1b8de96d2e5b6bc02d379db03a877d34d/library/std/src/panicking.rs:809:13
[INFO] [stdout]   14:     0x56970cad9786 - std::panicking::begin_panic_handler::{{closure}}::h67280e6fa0757873
[INFO] [stdout]                                at /rustc/202008a1b8de96d2e5b6bc02d379db03a877d34d/library/std/src/panicking.rs:667:13
[INFO] [stdout]   15:     0x56970cad83a9 - std::sys::backtrace::__rust_end_short_backtrace::h1dac3f54d6fbbeb2
[INFO] [stdout]                                at /rustc/202008a1b8de96d2e5b6bc02d379db03a877d34d/library/std/src/sys/backtrace.rs:170:18
[INFO] [stdout]   16:     0x56970cad944c - rust_begin_unwind
[INFO] [stdout]                                at /rustc/202008a1b8de96d2e5b6bc02d379db03a877d34d/library/std/src/panicking.rs:665:5
[INFO] [stdout]   17:     0x56970ca30ab0 - core::panicking::panic_fmt::h6792bd1b2bf01041
[INFO] [stdout]                                at /rustc/202008a1b8de96d2e5b6bc02d379db03a877d34d/library/core/src/panicking.rs:76:14
[INFO] [stdout]   18:     0x56970ca30b3c - core::panicking::panic::hbb5c236a846c507c
[INFO] [stdout]                                at /rustc/202008a1b8de96d2e5b6bc02d379db03a877d34d/library/core/src/panicking.rs:148:5
[INFO] [stdout]   19:     0x56970ca46155 - study_crate::exceptions::tests::test_succinct_read::h17202d51f4891288
[INFO] [stdout]                                at /opt/rustwide/workdir/src/exceptions.rs:85:9
[INFO] [stdout]   20:     0x56970ca46097 - study_crate::exceptions::tests::test_succinct_read::{{closure}}::h3f9587cc4357f36d
[INFO] [stdout]                                at /opt/rustwide/workdir/src/exceptions.rs:83:28
[INFO] [stdout]   21:     0x56970ca5e186 - core::ops::function::FnOnce::call_once::h34df230632d68fb3
[INFO] [stdout]                                at /rustc/202008a1b8de96d2e5b6bc02d379db03a877d34d/library/core/src/ops/function.rs:250:5
[INFO] [stdout]   22:     0x56970caa55bb - core::ops::function::FnOnce::call_once::h871bf86719ec9aa4
[INFO] [stdout]                                at /rustc/202008a1b8de96d2e5b6bc02d379db03a877d34d/library/core/src/ops/function.rs:250:5
[INFO] [stdout]   23:     0x56970caa55bb - test::__rust_begin_short_backtrace::h2167df1e2b7d76fd
[INFO] [stdout]                                at /rustc/202008a1b8de96d2e5b6bc02d379db03a877d34d/library/test/src/lib.rs:632:18
[INFO] [stdout]   24:     0x56970caa4fa8 - test::run_test_in_process::{{closure}}::h15d92f75a3adfb79
[INFO] [stdout]                                at /rustc/202008a1b8de96d2e5b6bc02d379db03a877d34d/library/test/src/lib.rs:655:60
[INFO] [stdout]   25:     0x56970caa4fa8 - <core::panic::unwind_safe::AssertUnwindSafe<F> as core::ops::function::FnOnce<()>>::call_once::hb6c8955835a8dbbb
[INFO] [stdout]                                at /rustc/202008a1b8de96d2e5b6bc02d379db03a877d34d/library/core/src/panic/unwind_safe.rs:272:9
[INFO] [stdout]   26:     0x56970caa4fa8 - std::panicking::try::do_call::hc79d0fc888a0bd30
[INFO] [stdout]                                at /rustc/202008a1b8de96d2e5b6bc02d379db03a877d34d/library/std/src/panicking.rs:557:40
[INFO] [stdout]   27:     0x56970caa4fa8 - std::panicking::try::hb8a7878e3a8589d6
[INFO] [stdout]                                at /rustc/202008a1b8de96d2e5b6bc02d379db03a877d34d/library/std/src/panicking.rs:520:19
[INFO] [stdout]   28:     0x56970caa4fa8 - std::panic::catch_unwind::hb8e4600ff0ff5cfa
[INFO] [stdout]                                at /rustc/202008a1b8de96d2e5b6bc02d379db03a877d34d/library/std/src/panic.rs:358:14
[INFO] [stdout]   29:     0x56970caa4fa8 - test::run_test_in_process::hc2900b0b18688dd6
[INFO] [stdout]                                at /rustc/202008a1b8de96d2e5b6bc02d379db03a877d34d/library/test/src/lib.rs:655:27
[INFO] [stdout]   30:     0x56970caa4fa8 - test::run_test::{{closure}}::hac2a9cb07be3d48d
[INFO] [stdout]                                at /rustc/202008a1b8de96d2e5b6bc02d379db03a877d34d/library/test/src/lib.rs:576:43
[INFO] [stdout]   31:     0x56970ca68a4a - test::run_test::{{closure}}::h4a5b729e66a38cd8
[INFO] [stdout]                                at /rustc/202008a1b8de96d2e5b6bc02d379db03a877d34d/library/test/src/lib.rs:606:41
[INFO] [stdout]   32:     0x56970ca68a4a - std::sys::backtrace::__rust_begin_short_backtrace::h0496fb742492f573
[INFO] [stdout]                                at /rustc/202008a1b8de96d2e5b6bc02d379db03a877d34d/library/std/src/sys/backtrace.rs:154:18
[INFO] [stdout]   33:     0x56970ca6c3c4 - std::thread::Builder::spawn_unchecked_::{{closure}}::{{closure}}::hbb6d257c550a54bd
[INFO] [stdout]                                at /rustc/202008a1b8de96d2e5b6bc02d379db03a877d34d/library/std/src/thread/mod.rs:561:17
[INFO] [stdout]   34:     0x56970ca6c3c4 - <core::panic::unwind_safe::AssertUnwindSafe<F> as core::ops::function::FnOnce<()>>::call_once::h46696fe4a6832328
[INFO] [stdout]                                at /rustc/202008a1b8de96d2e5b6bc02d379db03a877d34d/library/core/src/panic/unwind_safe.rs:272:9
[INFO] [stdout]   35:     0x56970ca6c3c4 - std::panicking::try::do_call::h2625a51b667bfb64
[INFO] [stdout]                                at /rustc/202008a1b8de96d2e5b6bc02d379db03a877d34d/library/std/src/panicking.rs:557:40
[INFO] [stdout]   36:     0x56970ca6c3c4 - std::panicking::try::hb956a59a1973aa4c
[INFO] [stdout]                                at /rustc/202008a1b8de96d2e5b6bc02d379db03a877d34d/library/std/src/panicking.rs:520:19
[INFO] [stdout]   37:     0x56970ca6c3c4 - std::panic::catch_unwind::h64f3b9d1067ef6a0
[INFO] [stdout]                                at /rustc/202008a1b8de96d2e5b6bc02d379db03a877d34d/library/std/src/panic.rs:358:14
[INFO] [stdout]   38:     0x56970ca6c3c4 - std::thread::Builder::spawn_unchecked_::{{closure}}::h42b2841295b6c0b2
[INFO] [stdout]                                at /rustc/202008a1b8de96d2e5b6bc02d379db03a877d34d/library/std/src/thread/mod.rs:559:30
[INFO] [stdout]   39:     0x56970ca6c3c4 - core::ops::function::FnOnce::call_once{{vtable.shim}}::h6127de71b8124639
[INFO] [stdout]                                at /rustc/202008a1b8de96d2e5b6bc02d379db03a877d34d/library/core/src/ops/function.rs:250:5
[INFO] [stdout]   40:     0x56970cadd94b - <alloc::boxed::Box<F,A> as core::ops::function::FnOnce<Args>>::call_once::h42f0ba71002a1b2c
[INFO] [stdout]                                at /rustc/202008a1b8de96d2e5b6bc02d379db03a877d34d/library/alloc/src/boxed.rs:1972:9
[INFO] [stdout]   41:     0x56970cadd94b - <alloc::boxed::Box<F,A> as core::ops::function::FnOnce<Args>>::call_once::had9e47d7a3dcecb8
[INFO] [stdout]                                at /rustc/202008a1b8de96d2e5b6bc02d379db03a877d34d/library/alloc/src/boxed.rs:1972:9
[INFO] [stdout]   42:     0x56970cadd94b - std::sys::pal::unix::thread::Thread::new::thread_start::h48cf765408f6f5f2
[INFO] [stdout]                                at /rustc/202008a1b8de96d2e5b6bc02d379db03a877d34d/library/std/src/sys/pal/unix/thread.rs:105:17
[INFO] [stdout]   43:     0x7db2f7180ac3 - <unknown>
[INFO] [stdout]   44:     0x7db2f7211a04 - clone
[INFO] [stdout]   45:                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 4.00s
[INFO] [stdout] 
[INFO] [stderr] error: test failed, to rerun pass `--bin study-crate`
[INFO] running `Command { std: "docker" "inspect" "691d3f2b1c93046faa485423160c262114fe7168fa96fc8a8006f01725e954d9", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "691d3f2b1c93046faa485423160c262114fe7168fa96fc8a8006f01725e954d9", kill_on_drop: false }`
[INFO] [stdout] 691d3f2b1c93046faa485423160c262114fe7168fa96fc8a8006f01725e954d9
