[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] 044cb69013acceea9c544db899cbfda8958dbbf9 [INFO] testing Medsko/study-crate against beta-2021-09-08 for beta-1.56-1 [INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FMedsko%2Fstudy-crate" "/workspace/builds/worker-12/source", kill_on_drop: false }` [INFO] [stderr] Cloning into '/workspace/builds/worker-12/source'... [INFO] [stderr] done. [INFO] validating manifest of git repo https://github.com/Medsko/study-crate on toolchain beta-2021-09-08 [INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+beta-2021-09-08" "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-12/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: "/workspace/cargo-home/bin/cargo" "+beta-2021-09-08" "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-12/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-12/source:/opt/rustwide/workdir:ro,Z" "-v" "/var/lib/crater-agent-workspace/cargo-home:/opt/rustwide/cargo-home:ro,Z" "-v" "/var/lib/crater-agent-workspace/rustup-home:/opt/rustwide/rustup-home:ro,Z" "-e" "SOURCE_DIR=/opt/rustwide/workdir" "-e" "CARGO_TARGET_DIR=/opt/rustwide/target" "-e" "CARGO_HOME=/opt/rustwide/cargo-home" "-e" "RUSTUP_HOME=/opt/rustwide/rustup-home" "-w" "/opt/rustwide/workdir" "-m" "1610612736" "--user" "0:0" "--network" "none" "ghcr.io/rust-lang/crates-build-env/linux@sha256:a89201d6b5b9fd45c15d5952ece0a0129e7e80cb26ec023fd59cf09bc26f1604" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2021-09-08" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }` [INFO] [stdout] 9514dc17e27651736dbb04b5f35cbceca69311820fc29b6590fcbc41fd166040 [INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap. [INFO] running `Command { std: "docker" "start" "-a" "9514dc17e27651736dbb04b5f35cbceca69311820fc29b6590fcbc41fd166040", kill_on_drop: false }` [INFO] running `Command { std: "docker" "inspect" "9514dc17e27651736dbb04b5f35cbceca69311820fc29b6590fcbc41fd166040", kill_on_drop: false }` [INFO] running `Command { std: "docker" "rm" "-f" "9514dc17e27651736dbb04b5f35cbceca69311820fc29b6590fcbc41fd166040", kill_on_drop: false }` [INFO] [stdout] 9514dc17e27651736dbb04b5f35cbceca69311820fc29b6590fcbc41fd166040 [INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-12/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-12/source:/opt/rustwide/workdir:ro,Z" "-v" "/var/lib/crater-agent-workspace/cargo-home:/opt/rustwide/cargo-home:ro,Z" "-v" "/var/lib/crater-agent-workspace/rustup-home:/opt/rustwide/rustup-home:ro,Z" "-e" "SOURCE_DIR=/opt/rustwide/workdir" "-e" "CARGO_TARGET_DIR=/opt/rustwide/target" "-e" "CARGO_INCREMENTAL=0" "-e" "RUST_BACKTRACE=full" "-e" "RUSTFLAGS=--cap-lints=warn" "-e" "CARGO_HOME=/opt/rustwide/cargo-home" "-e" "RUSTUP_HOME=/opt/rustwide/rustup-home" "-w" "/opt/rustwide/workdir" "-m" "1610612736" "--user" "0:0" "--network" "none" "ghcr.io/rust-lang/crates-build-env/linux@sha256:a89201d6b5b9fd45c15d5952ece0a0129e7e80cb26ec023fd59cf09bc26f1604" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2021-09-08" "build" "--frozen" "--message-format=json", kill_on_drop: false }` [INFO] [stdout] 2e65fd3cb3b660ab09cfe8ed3497e100bb466696797cb96a6c3f351f7ae86a3c [INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap. [INFO] running `Command { std: "docker" "start" "-a" "2e65fd3cb3b660ab09cfe8ed3497e100bb466696797cb96a6c3f351f7ae86a3c", 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 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: unused variable: `key` [INFO] [stdout] --> src/lib.rs:45:39 [INFO] [stdout] | [INFO] [stdout] 45 | match counts.iter().max_by_key(|&(key, value)| value) { [INFO] [stdout] | ^^^ help: if this is intentional, prefix it with an underscore: `_key` [INFO] [stdout] | [INFO] [stdout] = note: `#[warn(unused_variables)]` on by default [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused variable: `key` [INFO] [stdout] --> src/collections/vectors.rs:35:39 [INFO] [stdout] | [INFO] [stdout] 35 | match counts.iter().max_by_key(|&(key, value)| value) { [INFO] [stdout] | ^^^ help: if this is intentional, prefix it with an underscore: `_key` [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused variable: `yet_another_string` [INFO] [stdout] --> src/prepackages/ownership.rs:69:9 [INFO] [stdout] | [INFO] [stdout] 69 | let yet_another_string = "Hi".to_string(); [INFO] [stdout] | ^^^^^^^^^^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_yet_another_string` [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused variable: `immutable_pointer` [INFO] [stdout] --> src/prepackages/ownership.rs:75:9 [INFO] [stdout] | [INFO] [stdout] 75 | let immutable_pointer = &yet_another_string; [INFO] [stdout] | ^^^^^^^^^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_immutable_pointer` [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused variable: `another_immutable_pointer` [INFO] [stdout] --> src/prepackages/ownership.rs:76:9 [INFO] [stdout] | [INFO] [stdout] 76 | let another_immutable_pointer = &yet_another_string; [INFO] [stdout] | ^^^^^^^^^^^^^^^^^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_another_immutable_pointer` [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused variable: `pointer` [INFO] [stdout] --> src/prepackages/ownership.rs:78:9 [INFO] [stdout] | [INFO] [stdout] 78 | let pointer = &mut yet_another_string; [INFO] [stdout] | ^^^^^^^ help: if this is intentional, prefix it with an underscore: `_pointer` [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused variable: `splice_first_four_chars` [INFO] [stdout] --> src/prepackages/ownership.rs:111:9 [INFO] [stdout] | [INFO] [stdout] 111 | let splice_first_four_chars = &s[0..4]; [INFO] [stdout] | ^^^^^^^^^^^^^^^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_splice_first_four_chars` [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused variable: `splice_first_four_chars_also` [INFO] [stdout] --> src/prepackages/ownership.rs:112:9 [INFO] [stdout] | [INFO] [stdout] 112 | let splice_first_four_chars_also = &s[..4]; [INFO] [stdout] | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_splice_first_four_chars_also` [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused variable: `splice_chars_from_fourth` [INFO] [stdout] --> src/prepackages/ownership.rs:114:9 [INFO] [stdout] | [INFO] [stdout] 114 | let splice_chars_from_fourth = &s[4..]; [INFO] [stdout] | ^^^^^^^^^^^^^^^^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_splice_chars_from_fourth` [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused variable: `second_user` [INFO] [stdout] --> src/prepackages/structs.rs:31:9 [INFO] [stdout] | [INFO] [stdout] 31 | let second_user = User { [INFO] [stdout] | ^^^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_second_user` [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused variable: `four` [INFO] [stdout] --> src/prepackages/enums/enums.rs:44:9 [INFO] [stdout] | [INFO] [stdout] 44 | let four = IpAddrKind::V4; [INFO] [stdout] | ^^^^ help: if this is intentional, prefix it with an underscore: `_four` [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused variable: `hip` [INFO] [stdout] --> src/prepackages/enums/enums.rs:45:9 [INFO] [stdout] | [INFO] [stdout] 45 | let hip = IpAddrKind::V6; [INFO] [stdout] | ^^^ help: if this is intentional, prefix it with an underscore: `_hip` [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused variable: `loopback` [INFO] [stdout] --> src/prepackages/enums/enums.rs:47:9 [INFO] [stdout] | [INFO] [stdout] 47 | let loopback = IpAddr { [INFO] [stdout] | ^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_loopback` [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused variable: `concise_loopback` [INFO] [stdout] --> src/prepackages/enums/enums.rs:52:9 [INFO] [stdout] | [INFO] [stdout] 52 | let concise_loopback = ConciseIpAddr::V6(String::from("::1")); [INFO] [stdout] | ^^^^^^^^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_concise_loopback` [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused variable: `home` [INFO] [stdout] --> src/prepackages/enums/enums.rs:54:9 [INFO] [stdout] | [INFO] [stdout] 54 | let home = ConciseIpAddr::V4(127, 0, 0, 1); [INFO] [stdout] | ^^^^ help: if this is intentional, prefix it with an underscore: `_home` [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: function is never used: `exercise` [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 is never used: `employee_registration` [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 is never used: `remove_employee` [INFO] [stdout] --> src/collections/exercises.rs:70:4 [INFO] [stdout] | [INFO] [stdout] 70 | fn remove_employee(register: &mut HashMap>, other_words: &mut SplitWhitespace) { [INFO] [stdout] | ^^^^^^^^^^^^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: function is never used: `extract_full_name` [INFO] [stdout] --> src/collections/exercises.rs:90:4 [INFO] [stdout] | [INFO] [stdout] 90 | fn extract_full_name(words: &mut SplitWhitespace, stop: &str) -> Result { [INFO] [stdout] | ^^^^^^^^^^^^^^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: function is never used: `register_employee` [INFO] [stdout] --> src/collections/exercises.rs:108:4 [INFO] [stdout] | [INFO] [stdout] 108 | fn register_employee(register: &mut HashMap>, other_words: &mut SplitWhitespace) { [INFO] [stdout] | ^^^^^^^^^^^^^^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: function is never used: `print_register` [INFO] [stdout] --> src/collections/exercises.rs:119:4 [INFO] [stdout] | [INFO] [stdout] 119 | fn print_register(register: &HashMap>) { [INFO] [stdout] | ^^^^^^^^^^^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: function is never used: `hash_it_up` [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 is never used: `string_stuff` [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 is never used: `got_game` [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 is never used: `to_pig_latin` [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 never used: `is_vowel` [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 is never constructed: `Guess` [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 function is never used: `new` [INFO] [stdout] --> src/prepackages/gg.rs:11:12 [INFO] [stdout] | [INFO] [stdout] 11 | pub fn new(value: i32) -> Guess { [INFO] [stdout] | ^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: associated function is never used: `value` [INFO] [stdout] --> src/prepackages/gg.rs:19:12 [INFO] [stdout] | [INFO] [stdout] 19 | pub fn value(&self) -> i32 { [INFO] [stdout] | ^^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: function is never used: `play_the_guessing_game` [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 is never used: `own` [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 is never used: `takes_ownership` [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 is never used: `makes_copy` [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 is never used: `references_and_borrowing` [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 is never used: `calculate_length` [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 is never used: `string_to_length` [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 is never used: `print_length` [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 is never used: `legalized_modification` [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 is never used: `slice_stuff` [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 is never used: `slice_first_word` [INFO] [stdout] --> src/prepackages/ownership.rs:121:4 [INFO] [stdout] | [INFO] [stdout] 121 | fn slice_first_word(s: &String) -> &str { [INFO] [stdout] | ^^^^^^^^^^^^^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: function is never used: `first_word` [INFO] [stdout] --> src/prepackages/ownership.rs:137:4 [INFO] [stdout] | [INFO] [stdout] 137 | fn first_word(s: &String) -> usize { [INFO] [stdout] | ^^^^^^^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: struct is never constructed: `User` [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 is never constructed: `Color` [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 is never constructed: `Point` [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 is never used: `structure` [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 is never used: `first_structs` [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 is never used: `build_user` [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: associated function is never used: `area` [INFO] [stdout] --> src/prepackages/structs.rs:61:8 [INFO] [stdout] | [INFO] [stdout] 61 | fn area(&self) -> u32 { [INFO] [stdout] | ^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: associated function is never used: `longest_side` [INFO] [stdout] --> src/prepackages/structs.rs:65:8 [INFO] [stdout] | [INFO] [stdout] 65 | fn longest_side(&self) -> u32 { [INFO] [stdout] | ^^^^^^^^^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: associated function is never used: `is_square` [INFO] [stdout] --> src/prepackages/structs.rs:72:8 [INFO] [stdout] | [INFO] [stdout] 72 | fn is_square(&self) -> bool { [INFO] [stdout] | ^^^^^^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: associated function is never used: `transform_to_circle` [INFO] [stdout] --> src/prepackages/structs.rs:77:8 [INFO] [stdout] | [INFO] [stdout] 77 | fn transform_to_circle(self) -> Circle { [INFO] [stdout] | ^^^^^^^^^^^^^^^^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: associated function is never used: `can_hold` [INFO] [stdout] --> src/prepackages/structs.rs:81:8 [INFO] [stdout] | [INFO] [stdout] 81 | fn can_hold(&self, other: &Rectangle) -> bool { [INFO] [stdout] | ^^^^^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: associated function is never used: `stretch` [INFO] [stdout] --> src/prepackages/structs.rs:85:8 [INFO] [stdout] | [INFO] [stdout] 85 | fn stretch(&mut self, add_height: u32, add_width: u32) { [INFO] [stdout] | ^^^^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: associated function is never used: `square` [INFO] [stdout] --> src/prepackages/structs.rs:91:8 [INFO] [stdout] | [INFO] [stdout] 91 | fn square(size: u32) -> Rectangle { [INFO] [stdout] | ^^^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: associated function is never used: `shrink` [INFO] [stdout] --> src/prepackages/structs.rs:101:8 [INFO] [stdout] | [INFO] [stdout] 101 | fn shrink(&mut self, take_height: u32, take_width: u32) { [INFO] [stdout] | ^^^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: function is never used: `rectangles` [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 is never used: `area` [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 is never used: `variate` [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 is never used: `function_stuff` [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 is never used: `returns_one` [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 is never used: `fizz_buzz` [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 is never used: `loop_return` [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 is never used: `countdown` [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 is never used: `for_loop` [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 is never used: `range_for_loop` [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 is never used: `reverse_range_for_loop` [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: variant is never constructed: `V4` [INFO] [stdout] --> src/prepackages/enums/enums.rs:6:5 [INFO] [stdout] | [INFO] [stdout] 6 | V4, [INFO] [stdout] | ^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: variant is never constructed: `V6` [INFO] [stdout] --> src/prepackages/enums/enums.rs:7:5 [INFO] [stdout] | [INFO] [stdout] 7 | V6 [INFO] [stdout] | ^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: enum is never used: `ConciseIpAddr` [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: associated function is never used: `call` [INFO] [stdout] --> src/prepackages/enums/enums.rs:25:8 [INFO] [stdout] | [INFO] [stdout] 25 | fn call(&self) { [INFO] [stdout] | ^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: function is never used: `enumerate` [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: variant is never constructed: `Alabama` [INFO] [stdout] --> src/prepackages/enums/matching.rs:4:5 [INFO] [stdout] | [INFO] [stdout] 4 | Alabama, [INFO] [stdout] | ^^^^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: variant is never constructed: `Alaska` [INFO] [stdout] --> src/prepackages/enums/matching.rs:5:5 [INFO] [stdout] | [INFO] [stdout] 5 | Alaska, [INFO] [stdout] | ^^^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: variant is never constructed: `Oregon` [INFO] [stdout] --> src/prepackages/enums/matching.rs:6:5 [INFO] [stdout] | [INFO] [stdout] 6 | Oregon, [INFO] [stdout] | ^^^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: enum is never used: `Coin` [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: associated function is never used: `value_in_cents` [INFO] [stdout] --> src/prepackages/enums/matching.rs:17:8 [INFO] [stdout] | [INFO] [stdout] 17 | fn value_in_cents(&self) -> u8 { [INFO] [stdout] | ^^^^^^^^^^^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: function is never used: `match_stuff` [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 is never used: `find_someone` [INFO] [stdout] --> src/prepackages/enums/matching.rs:41:4 [INFO] [stdout] | [INFO] [stdout] 41 | fn find_someone(optionals: &[Option]) { [INFO] [stdout] | ^^^^^^^^^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: function is never used: `plus_one` [INFO] [stdout] --> src/prepackages/enums/matching.rs:49:4 [INFO] [stdout] | [INFO] [stdout] 49 | fn plus_one(x: Option) -> Option { [INFO] [stdout] | ^^^^^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: function is never used: `options` [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: 80 warnings emitted [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused variable: `yet_another_string` [INFO] [stdout] --> src/prepackages/ownership.rs:69:9 [INFO] [stdout] | [INFO] [stdout] 69 | let yet_another_string = "Hi".to_string(); [INFO] [stdout] | ^^^^^^^^^^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_yet_another_string` [INFO] [stdout] | [INFO] [stdout] = note: `#[warn(unused_variables)]` on by default [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused variable: `immutable_pointer` [INFO] [stdout] --> src/prepackages/ownership.rs:75:9 [INFO] [stdout] | [INFO] [stdout] 75 | let immutable_pointer = &yet_another_string; [INFO] [stdout] | ^^^^^^^^^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_immutable_pointer` [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused variable: `another_immutable_pointer` [INFO] [stdout] --> src/prepackages/ownership.rs:76:9 [INFO] [stdout] | [INFO] [stdout] 76 | let another_immutable_pointer = &yet_another_string; [INFO] [stdout] | ^^^^^^^^^^^^^^^^^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_another_immutable_pointer` [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused variable: `pointer` [INFO] [stdout] --> src/prepackages/ownership.rs:78:9 [INFO] [stdout] | [INFO] [stdout] 78 | let pointer = &mut yet_another_string; [INFO] [stdout] | ^^^^^^^ help: if this is intentional, prefix it with an underscore: `_pointer` [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused variable: `splice_first_four_chars` [INFO] [stdout] --> src/prepackages/ownership.rs:111:9 [INFO] [stdout] | [INFO] [stdout] 111 | let splice_first_four_chars = &s[0..4]; [INFO] [stdout] | ^^^^^^^^^^^^^^^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_splice_first_four_chars` [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused variable: `splice_first_four_chars_also` [INFO] [stdout] --> src/prepackages/ownership.rs:112:9 [INFO] [stdout] | [INFO] [stdout] 112 | let splice_first_four_chars_also = &s[..4]; [INFO] [stdout] | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_splice_first_four_chars_also` [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused variable: `splice_chars_from_fourth` [INFO] [stdout] --> src/prepackages/ownership.rs:114:9 [INFO] [stdout] | [INFO] [stdout] 114 | let splice_chars_from_fourth = &s[4..]; [INFO] [stdout] | ^^^^^^^^^^^^^^^^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_splice_chars_from_fourth` [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused variable: `second_user` [INFO] [stdout] --> src/prepackages/structs.rs:31:9 [INFO] [stdout] | [INFO] [stdout] 31 | let second_user = User { [INFO] [stdout] | ^^^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_second_user` [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused variable: `four` [INFO] [stdout] --> src/prepackages/enums/enums.rs:44:9 [INFO] [stdout] | [INFO] [stdout] 44 | let four = IpAddrKind::V4; [INFO] [stdout] | ^^^^ help: if this is intentional, prefix it with an underscore: `_four` [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused variable: `hip` [INFO] [stdout] --> src/prepackages/enums/enums.rs:45:9 [INFO] [stdout] | [INFO] [stdout] 45 | let hip = IpAddrKind::V6; [INFO] [stdout] | ^^^ help: if this is intentional, prefix it with an underscore: `_hip` [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused variable: `loopback` [INFO] [stdout] --> src/prepackages/enums/enums.rs:47:9 [INFO] [stdout] | [INFO] [stdout] 47 | let loopback = IpAddr { [INFO] [stdout] | ^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_loopback` [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused variable: `concise_loopback` [INFO] [stdout] --> src/prepackages/enums/enums.rs:52:9 [INFO] [stdout] | [INFO] [stdout] 52 | let concise_loopback = ConciseIpAddr::V6(String::from("::1")); [INFO] [stdout] | ^^^^^^^^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_concise_loopback` [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused variable: `home` [INFO] [stdout] --> src/prepackages/enums/enums.rs:54:9 [INFO] [stdout] | [INFO] [stdout] 54 | let home = ConciseIpAddr::V4(127, 0, 0, 1); [INFO] [stdout] | ^^^^ help: if this is intentional, prefix it with an underscore: `_home` [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused variable: `key` [INFO] [stdout] --> src/collections/vectors.rs:35:39 [INFO] [stdout] | [INFO] [stdout] 35 | match counts.iter().max_by_key(|&(key, value)| value) { [INFO] [stdout] | ^^^ help: if this is intentional, prefix it with an underscore: `_key` [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused variable: `nums` [INFO] [stdout] --> src/fp/closures.rs:52:10 [INFO] [stdout] | [INFO] [stdout] 52 | |nums| { [INFO] [stdout] | ^^^^ help: if this is intentional, prefix it with an underscore: `_nums` [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused variable: `num` [INFO] [stdout] --> src/fp/closures.rs:49:6 [INFO] [stdout] | [INFO] [stdout] 49 | |num| { [INFO] [stdout] | ^^^ help: if this is intentional, prefix it with an underscore: `_num` [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused variable: `num` [INFO] [stdout] --> src/fp/closures.rs:59:45 [INFO] [stdout] | [INFO] [stdout] 59 | let mut expensive_result = Cacher::new(|num| { [INFO] [stdout] | ^^^ help: if this is intentional, prefix it with an underscore: `_num` [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: 17 warnings emitted [INFO] [stdout] [INFO] [stdout] [INFO] [stderr] Finished dev [unoptimized + debuginfo] target(s) in 11.80s [INFO] running `Command { std: "docker" "inspect" "2e65fd3cb3b660ab09cfe8ed3497e100bb466696797cb96a6c3f351f7ae86a3c", kill_on_drop: false }` [INFO] running `Command { std: "docker" "rm" "-f" "2e65fd3cb3b660ab09cfe8ed3497e100bb466696797cb96a6c3f351f7ae86a3c", kill_on_drop: false }` [INFO] [stdout] 2e65fd3cb3b660ab09cfe8ed3497e100bb466696797cb96a6c3f351f7ae86a3c [INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-12/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-12/source:/opt/rustwide/workdir:ro,Z" "-v" "/var/lib/crater-agent-workspace/cargo-home:/opt/rustwide/cargo-home:ro,Z" "-v" "/var/lib/crater-agent-workspace/rustup-home:/opt/rustwide/rustup-home:ro,Z" "-e" "SOURCE_DIR=/opt/rustwide/workdir" "-e" "CARGO_TARGET_DIR=/opt/rustwide/target" "-e" "CARGO_INCREMENTAL=0" "-e" "RUST_BACKTRACE=full" "-e" "RUSTFLAGS=--cap-lints=warn" "-e" "CARGO_HOME=/opt/rustwide/cargo-home" "-e" "RUSTUP_HOME=/opt/rustwide/rustup-home" "-w" "/opt/rustwide/workdir" "-m" "1610612736" "--user" "0:0" "--network" "none" "ghcr.io/rust-lang/crates-build-env/linux@sha256:a89201d6b5b9fd45c15d5952ece0a0129e7e80cb26ec023fd59cf09bc26f1604" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2021-09-08" "test" "--frozen" "--no-run" "--message-format=json", kill_on_drop: false }` [INFO] [stdout] 7f25cca021eb636ec2c0aa5d68df72d90bd42054f0048366da31d729e672f024 [INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap. [INFO] running `Command { std: "docker" "start" "-a" "7f25cca021eb636ec2c0aa5d68df72d90bd42054f0048366da31d729e672f024", kill_on_drop: false }` [INFO] [stderr] warning: unused manifest key: package.licence [INFO] [stdout] warning: unused variable: `key` [INFO] [stdout] --> src/lib.rs:45:39 [INFO] [stdout] | [INFO] [stdout] 45 | match counts.iter().max_by_key(|&(key, value)| value) { [INFO] [stdout] | ^^^ help: if this is intentional, prefix it with an underscore: `_key` [INFO] [stdout] | [INFO] [stdout] = note: `#[warn(unused_variables)]` on by default [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused variable: `key` [INFO] [stdout] --> src/collections/vectors.rs:35:39 [INFO] [stdout] | [INFO] [stdout] 35 | match counts.iter().max_by_key(|&(key, value)| value) { [INFO] [stdout] | ^^^ help: if this is intentional, prefix it with an underscore: `_key` [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused variable: `yet_another_string` [INFO] [stdout] --> src/prepackages/ownership.rs:69:9 [INFO] [stdout] | [INFO] [stdout] 69 | let yet_another_string = "Hi".to_string(); [INFO] [stdout] | ^^^^^^^^^^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_yet_another_string` [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused variable: `immutable_pointer` [INFO] [stdout] --> src/prepackages/ownership.rs:75:9 [INFO] [stdout] | [INFO] [stdout] 75 | let immutable_pointer = &yet_another_string; [INFO] [stdout] | ^^^^^^^^^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_immutable_pointer` [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused variable: `another_immutable_pointer` [INFO] [stdout] --> src/prepackages/ownership.rs:76:9 [INFO] [stdout] | [INFO] [stdout] 76 | let another_immutable_pointer = &yet_another_string; [INFO] [stdout] | ^^^^^^^^^^^^^^^^^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_another_immutable_pointer` [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused variable: `pointer` [INFO] [stdout] --> src/prepackages/ownership.rs:78:9 [INFO] [stdout] | [INFO] [stdout] 78 | let pointer = &mut yet_another_string; [INFO] [stdout] | ^^^^^^^ help: if this is intentional, prefix it with an underscore: `_pointer` [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused variable: `splice_first_four_chars` [INFO] [stdout] --> src/prepackages/ownership.rs:111:9 [INFO] [stdout] | [INFO] [stdout] 111 | let splice_first_four_chars = &s[0..4]; [INFO] [stdout] | ^^^^^^^^^^^^^^^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_splice_first_four_chars` [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused variable: `splice_first_four_chars_also` [INFO] [stdout] --> src/prepackages/ownership.rs:112:9 [INFO] [stdout] | [INFO] [stdout] 112 | let splice_first_four_chars_also = &s[..4]; [INFO] [stdout] | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_splice_first_four_chars_also` [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused variable: `splice_chars_from_fourth` [INFO] [stdout] --> src/prepackages/ownership.rs:114:9 [INFO] [stdout] | [INFO] [stdout] 114 | let splice_chars_from_fourth = &s[4..]; [INFO] [stdout] | ^^^^^^^^^^^^^^^^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_splice_chars_from_fourth` [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused variable: `second_user` [INFO] [stdout] --> src/prepackages/structs.rs:31:9 [INFO] [stdout] | [INFO] [stdout] 31 | let second_user = User { [INFO] [stdout] | ^^^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_second_user` [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused variable: `four` [INFO] [stdout] --> src/prepackages/enums/enums.rs:44:9 [INFO] [stdout] | [INFO] [stdout] 44 | let four = IpAddrKind::V4; [INFO] [stdout] | ^^^^ help: if this is intentional, prefix it with an underscore: `_four` [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused variable: `hip` [INFO] [stdout] --> src/prepackages/enums/enums.rs:45:9 [INFO] [stdout] | [INFO] [stdout] 45 | let hip = IpAddrKind::V6; [INFO] [stdout] | ^^^ help: if this is intentional, prefix it with an underscore: `_hip` [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused variable: `loopback` [INFO] [stdout] --> src/prepackages/enums/enums.rs:47:9 [INFO] [stdout] | [INFO] [stdout] 47 | let loopback = IpAddr { [INFO] [stdout] | ^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_loopback` [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused variable: `concise_loopback` [INFO] [stdout] --> src/prepackages/enums/enums.rs:52:9 [INFO] [stdout] | [INFO] [stdout] 52 | let concise_loopback = ConciseIpAddr::V6(String::from("::1")); [INFO] [stdout] | ^^^^^^^^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_concise_loopback` [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused variable: `home` [INFO] [stdout] --> src/prepackages/enums/enums.rs:54:9 [INFO] [stdout] | [INFO] [stdout] 54 | let home = ConciseIpAddr::V4(127, 0, 0, 1); [INFO] [stdout] | ^^^^ help: if this is intentional, prefix it with an underscore: `_home` [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: function is never used: `exercise` [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 is never used: `employee_registration` [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 is never used: `remove_employee` [INFO] [stdout] --> src/collections/exercises.rs:70:4 [INFO] [stdout] | [INFO] [stdout] 70 | fn remove_employee(register: &mut HashMap>, other_words: &mut SplitWhitespace) { [INFO] [stdout] | ^^^^^^^^^^^^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: function is never used: `extract_full_name` [INFO] [stdout] --> src/collections/exercises.rs:90:4 [INFO] [stdout] | [INFO] [stdout] 90 | fn extract_full_name(words: &mut SplitWhitespace, stop: &str) -> Result { [INFO] [stdout] | ^^^^^^^^^^^^^^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: function is never used: `register_employee` [INFO] [stdout] --> src/collections/exercises.rs:108:4 [INFO] [stdout] | [INFO] [stdout] 108 | fn register_employee(register: &mut HashMap>, other_words: &mut SplitWhitespace) { [INFO] [stdout] | ^^^^^^^^^^^^^^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: function is never used: `print_register` [INFO] [stdout] --> src/collections/exercises.rs:119:4 [INFO] [stdout] | [INFO] [stdout] 119 | fn print_register(register: &HashMap>) { [INFO] [stdout] | ^^^^^^^^^^^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: function is never used: `hash_it_up` [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 is never used: `string_stuff` [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 is never used: `got_game` [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 is never used: `to_pig_latin` [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 never used: `is_vowel` [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 is never constructed: `Guess` [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 function is never used: `new` [INFO] [stdout] --> src/prepackages/gg.rs:11:12 [INFO] [stdout] | [INFO] [stdout] 11 | pub fn new(value: i32) -> Guess { [INFO] [stdout] | ^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: associated function is never used: `value` [INFO] [stdout] --> src/prepackages/gg.rs:19:12 [INFO] [stdout] | [INFO] [stdout] 19 | pub fn value(&self) -> i32 { [INFO] [stdout] | ^^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: function is never used: `play_the_guessing_game` [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 is never used: `own` [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 is never used: `takes_ownership` [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 is never used: `makes_copy` [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 is never used: `references_and_borrowing` [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 is never used: `calculate_length` [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 is never used: `string_to_length` [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 is never used: `print_length` [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 is never used: `legalized_modification` [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 is never used: `slice_stuff` [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 is never used: `slice_first_word` [INFO] [stdout] --> src/prepackages/ownership.rs:121:4 [INFO] [stdout] | [INFO] [stdout] 121 | fn slice_first_word(s: &String) -> &str { [INFO] [stdout] | ^^^^^^^^^^^^^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: function is never used: `first_word` [INFO] [stdout] --> src/prepackages/ownership.rs:137:4 [INFO] [stdout] | [INFO] [stdout] 137 | fn first_word(s: &String) -> usize { [INFO] [stdout] | ^^^^^^^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: struct is never constructed: `User` [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 is never constructed: `Color` [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 is never constructed: `Point` [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 is never used: `structure` [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 is never used: `first_structs` [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 is never used: `build_user` [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: associated function is never used: `area` [INFO] [stdout] --> src/prepackages/structs.rs:61:8 [INFO] [stdout] | [INFO] [stdout] 61 | fn area(&self) -> u32 { [INFO] [stdout] | ^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: associated function is never used: `longest_side` [INFO] [stdout] --> src/prepackages/structs.rs:65:8 [INFO] [stdout] | [INFO] [stdout] 65 | fn longest_side(&self) -> u32 { [INFO] [stdout] | ^^^^^^^^^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: associated function is never used: `is_square` [INFO] [stdout] --> src/prepackages/structs.rs:72:8 [INFO] [stdout] | [INFO] [stdout] 72 | fn is_square(&self) -> bool { [INFO] [stdout] | ^^^^^^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: associated function is never used: `transform_to_circle` [INFO] [stdout] --> src/prepackages/structs.rs:77:8 [INFO] [stdout] | [INFO] [stdout] 77 | fn transform_to_circle(self) -> Circle { [INFO] [stdout] | ^^^^^^^^^^^^^^^^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: associated function is never used: `can_hold` [INFO] [stdout] --> src/prepackages/structs.rs:81:8 [INFO] [stdout] | [INFO] [stdout] 81 | fn can_hold(&self, other: &Rectangle) -> bool { [INFO] [stdout] | ^^^^^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: associated function is never used: `stretch` [INFO] [stdout] --> src/prepackages/structs.rs:85:8 [INFO] [stdout] | [INFO] [stdout] 85 | fn stretch(&mut self, add_height: u32, add_width: u32) { [INFO] [stdout] | ^^^^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: associated function is never used: `square` [INFO] [stdout] --> src/prepackages/structs.rs:91:8 [INFO] [stdout] | [INFO] [stdout] 91 | fn square(size: u32) -> Rectangle { [INFO] [stdout] | ^^^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: associated function is never used: `shrink` [INFO] [stdout] --> src/prepackages/structs.rs:101:8 [INFO] [stdout] | [INFO] [stdout] 101 | fn shrink(&mut self, take_height: u32, take_width: u32) { [INFO] [stdout] | ^^^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: function is never used: `rectangles` [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 is never used: `area` [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 is never used: `variate` [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 is never used: `function_stuff` [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 is never used: `returns_one` [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 is never used: `fizz_buzz` [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 is never used: `loop_return` [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 is never used: `countdown` [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 is never used: `for_loop` [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] [stderr] Compiling study-crate v0.1.0 (/opt/rustwide/workdir) [INFO] [stdout] warning: function is never used: `range_for_loop` [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 is never used: `reverse_range_for_loop` [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: variant is never constructed: `V4` [INFO] [stdout] --> src/prepackages/enums/enums.rs:6:5 [INFO] [stdout] | [INFO] [stdout] 6 | V4, [INFO] [stdout] | ^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: variant is never constructed: `V6` [INFO] [stdout] --> src/prepackages/enums/enums.rs:7:5 [INFO] [stdout] | [INFO] [stdout] 7 | V6 [INFO] [stdout] | ^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: enum is never used: `ConciseIpAddr` [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: associated function is never used: `call` [INFO] [stdout] --> src/prepackages/enums/enums.rs:25:8 [INFO] [stdout] | [INFO] [stdout] 25 | fn call(&self) { [INFO] [stdout] | ^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: function is never used: `enumerate` [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: variant is never constructed: `Alabama` [INFO] [stdout] --> src/prepackages/enums/matching.rs:4:5 [INFO] [stdout] | [INFO] [stdout] 4 | Alabama, [INFO] [stdout] | ^^^^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: variant is never constructed: `Alaska` [INFO] [stdout] --> src/prepackages/enums/matching.rs:5:5 [INFO] [stdout] | [INFO] [stdout] 5 | Alaska, [INFO] [stdout] | ^^^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: variant is never constructed: `Oregon` [INFO] [stdout] --> src/prepackages/enums/matching.rs:6:5 [INFO] [stdout] | [INFO] [stdout] 6 | Oregon, [INFO] [stdout] | ^^^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: enum is never used: `Coin` [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: associated function is never used: `value_in_cents` [INFO] [stdout] --> src/prepackages/enums/matching.rs:17:8 [INFO] [stdout] | [INFO] [stdout] 17 | fn value_in_cents(&self) -> u8 { [INFO] [stdout] | ^^^^^^^^^^^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: function is never used: `match_stuff` [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 is never used: `find_someone` [INFO] [stdout] --> src/prepackages/enums/matching.rs:41:4 [INFO] [stdout] | [INFO] [stdout] 41 | fn find_someone(optionals: &[Option]) { [INFO] [stdout] | ^^^^^^^^^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: function is never used: `plus_one` [INFO] [stdout] --> src/prepackages/enums/matching.rs:49:4 [INFO] [stdout] | [INFO] [stdout] 49 | fn plus_one(x: Option) -> Option { [INFO] [stdout] | ^^^^^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: function is never used: `options` [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: 80 warnings emitted [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused variable: `yet_another_string` [INFO] [stdout] --> src/prepackages/ownership.rs:69:9 [INFO] [stdout] | [INFO] [stdout] 69 | let yet_another_string = "Hi".to_string(); [INFO] [stdout] | ^^^^^^^^^^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_yet_another_string` [INFO] [stdout] | [INFO] [stdout] = note: `#[warn(unused_variables)]` on by default [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused variable: `immutable_pointer` [INFO] [stdout] --> src/prepackages/ownership.rs:75:9 [INFO] [stdout] | [INFO] [stdout] 75 | let immutable_pointer = &yet_another_string; [INFO] [stdout] | ^^^^^^^^^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_immutable_pointer` [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused variable: `another_immutable_pointer` [INFO] [stdout] --> src/prepackages/ownership.rs:76:9 [INFO] [stdout] | [INFO] [stdout] 76 | let another_immutable_pointer = &yet_another_string; [INFO] [stdout] | ^^^^^^^^^^^^^^^^^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_another_immutable_pointer` [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused variable: `pointer` [INFO] [stdout] --> src/prepackages/ownership.rs:78:9 [INFO] [stdout] | [INFO] [stdout] 78 | let pointer = &mut yet_another_string; [INFO] [stdout] | ^^^^^^^ help: if this is intentional, prefix it with an underscore: `_pointer` [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused variable: `splice_first_four_chars` [INFO] [stdout] --> src/prepackages/ownership.rs:111:9 [INFO] [stdout] | [INFO] [stdout] 111 | let splice_first_four_chars = &s[0..4]; [INFO] [stdout] | ^^^^^^^^^^^^^^^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_splice_first_four_chars` [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused variable: `splice_first_four_chars_also` [INFO] [stdout] --> src/prepackages/ownership.rs:112:9 [INFO] [stdout] | [INFO] [stdout] 112 | let splice_first_four_chars_also = &s[..4]; [INFO] [stdout] | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_splice_first_four_chars_also` [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused variable: `splice_chars_from_fourth` [INFO] [stdout] --> src/prepackages/ownership.rs:114:9 [INFO] [stdout] | [INFO] [stdout] 114 | let splice_chars_from_fourth = &s[4..]; [INFO] [stdout] | ^^^^^^^^^^^^^^^^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_splice_chars_from_fourth` [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused variable: `second_user` [INFO] [stdout] --> src/prepackages/structs.rs:31:9 [INFO] [stdout] | [INFO] [stdout] 31 | let second_user = User { [INFO] [stdout] | ^^^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_second_user` [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused variable: `four` [INFO] [stdout] --> src/prepackages/enums/enums.rs:44:9 [INFO] [stdout] | [INFO] [stdout] 44 | let four = IpAddrKind::V4; [INFO] [stdout] | ^^^^ help: if this is intentional, prefix it with an underscore: `_four` [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused variable: `hip` [INFO] [stdout] --> src/prepackages/enums/enums.rs:45:9 [INFO] [stdout] | [INFO] [stdout] 45 | let hip = IpAddrKind::V6; [INFO] [stdout] | ^^^ help: if this is intentional, prefix it with an underscore: `_hip` [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused variable: `loopback` [INFO] [stdout] --> src/prepackages/enums/enums.rs:47:9 [INFO] [stdout] | [INFO] [stdout] 47 | let loopback = IpAddr { [INFO] [stdout] | ^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_loopback` [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused variable: `concise_loopback` [INFO] [stdout] --> src/prepackages/enums/enums.rs:52:9 [INFO] [stdout] | [INFO] [stdout] 52 | let concise_loopback = ConciseIpAddr::V6(String::from("::1")); [INFO] [stdout] | ^^^^^^^^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_concise_loopback` [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused variable: `home` [INFO] [stdout] --> src/prepackages/enums/enums.rs:54:9 [INFO] [stdout] | [INFO] [stdout] 54 | let home = ConciseIpAddr::V4(127, 0, 0, 1); [INFO] [stdout] | ^^^^ help: if this is intentional, prefix it with an underscore: `_home` [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused variable: `key` [INFO] [stdout] --> src/collections/vectors.rs:35:39 [INFO] [stdout] | [INFO] [stdout] 35 | match counts.iter().max_by_key(|&(key, value)| value) { [INFO] [stdout] | ^^^ help: if this is intentional, prefix it with an underscore: `_key` [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused variable: `nums` [INFO] [stdout] --> src/fp/closures.rs:52:10 [INFO] [stdout] | [INFO] [stdout] 52 | |nums| { [INFO] [stdout] | ^^^^ help: if this is intentional, prefix it with an underscore: `_nums` [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused variable: `num` [INFO] [stdout] --> src/fp/closures.rs:49:6 [INFO] [stdout] | [INFO] [stdout] 49 | |num| { [INFO] [stdout] | ^^^ help: if this is intentional, prefix it with an underscore: `_num` [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused variable: `num` [INFO] [stdout] --> src/fp/closures.rs:59:45 [INFO] [stdout] | [INFO] [stdout] 59 | let mut expensive_result = Cacher::new(|num| { [INFO] [stdout] | ^^^ help: if this is intentional, prefix it with an underscore: `_num` [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: 17 warnings emitted [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused import: `SystemTimeError` [INFO] [stdout] --> src/fp/closures.rs:79:33 [INFO] [stdout] | [INFO] [stdout] 79 | use std::time::{SystemTime, SystemTimeError}; [INFO] [stdout] | ^^^^^^^^^^^^^^^ [INFO] [stdout] | [INFO] [stdout] = note: `#[warn(unused_imports)]` on by default [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused variable: `key` [INFO] [stdout] --> src/lib.rs:45:39 [INFO] [stdout] | [INFO] [stdout] 45 | match counts.iter().max_by_key(|&(key, value)| value) { [INFO] [stdout] | ^^^ help: if this is intentional, prefix it with an underscore: `_key` [INFO] [stdout] | [INFO] [stdout] = note: `#[warn(unused_variables)]` on by default [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused variable: `key` [INFO] [stdout] --> src/collections/vectors.rs:35:39 [INFO] [stdout] | [INFO] [stdout] 35 | match counts.iter().max_by_key(|&(key, value)| value) { [INFO] [stdout] | ^^^ help: if this is intentional, prefix it with an underscore: `_key` [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused variable: `yet_another_string` [INFO] [stdout] --> src/prepackages/ownership.rs:69:9 [INFO] [stdout] | [INFO] [stdout] 69 | let yet_another_string = "Hi".to_string(); [INFO] [stdout] | ^^^^^^^^^^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_yet_another_string` [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused variable: `immutable_pointer` [INFO] [stdout] --> src/prepackages/ownership.rs:75:9 [INFO] [stdout] | [INFO] [stdout] 75 | let immutable_pointer = &yet_another_string; [INFO] [stdout] | ^^^^^^^^^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_immutable_pointer` [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused variable: `another_immutable_pointer` [INFO] [stdout] --> src/prepackages/ownership.rs:76:9 [INFO] [stdout] | [INFO] [stdout] 76 | let another_immutable_pointer = &yet_another_string; [INFO] [stdout] | ^^^^^^^^^^^^^^^^^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_another_immutable_pointer` [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused variable: `pointer` [INFO] [stdout] --> src/prepackages/ownership.rs:78:9 [INFO] [stdout] | [INFO] [stdout] 78 | let pointer = &mut yet_another_string; [INFO] [stdout] | ^^^^^^^ help: if this is intentional, prefix it with an underscore: `_pointer` [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused variable: `splice_first_four_chars` [INFO] [stdout] --> src/prepackages/ownership.rs:111:9 [INFO] [stdout] | [INFO] [stdout] 111 | let splice_first_four_chars = &s[0..4]; [INFO] [stdout] | ^^^^^^^^^^^^^^^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_splice_first_four_chars` [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused variable: `splice_first_four_chars_also` [INFO] [stdout] --> src/prepackages/ownership.rs:112:9 [INFO] [stdout] | [INFO] [stdout] 112 | let splice_first_four_chars_also = &s[..4]; [INFO] [stdout] | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_splice_first_four_chars_also` [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused variable: `splice_chars_from_fourth` [INFO] [stdout] --> src/prepackages/ownership.rs:114:9 [INFO] [stdout] | [INFO] [stdout] 114 | let splice_chars_from_fourth = &s[4..]; [INFO] [stdout] | ^^^^^^^^^^^^^^^^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_splice_chars_from_fourth` [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused variable: `second_user` [INFO] [stdout] --> src/prepackages/structs.rs:31:9 [INFO] [stdout] | [INFO] [stdout] 31 | let second_user = User { [INFO] [stdout] | ^^^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_second_user` [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused variable: `four` [INFO] [stdout] --> src/prepackages/enums/enums.rs:44:9 [INFO] [stdout] | [INFO] [stdout] 44 | let four = IpAddrKind::V4; [INFO] [stdout] | ^^^^ help: if this is intentional, prefix it with an underscore: `_four` [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused variable: `hip` [INFO] [stdout] --> src/prepackages/enums/enums.rs:45:9 [INFO] [stdout] | [INFO] [stdout] 45 | let hip = IpAddrKind::V6; [INFO] [stdout] | ^^^ help: if this is intentional, prefix it with an underscore: `_hip` [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused variable: `loopback` [INFO] [stdout] --> src/prepackages/enums/enums.rs:47:9 [INFO] [stdout] | [INFO] [stdout] 47 | let loopback = IpAddr { [INFO] [stdout] | ^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_loopback` [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused variable: `concise_loopback` [INFO] [stdout] --> src/prepackages/enums/enums.rs:52:9 [INFO] [stdout] | [INFO] [stdout] 52 | let concise_loopback = ConciseIpAddr::V6(String::from("::1")); [INFO] [stdout] | ^^^^^^^^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_concise_loopback` [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused variable: `home` [INFO] [stdout] --> src/prepackages/enums/enums.rs:54:9 [INFO] [stdout] | [INFO] [stdout] 54 | let home = ConciseIpAddr::V4(127, 0, 0, 1); [INFO] [stdout] | ^^^^ help: if this is intentional, prefix it with an underscore: `_home` [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused variable: `yet_another_string` [INFO] [stdout] --> src/prepackages/ownership.rs:69:9 [INFO] [stdout] | [INFO] [stdout] 69 | let yet_another_string = "Hi".to_string(); [INFO] [stdout] | ^^^^^^^^^^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_yet_another_string` [INFO] [stdout] | [INFO] [stdout] = note: `#[warn(unused_variables)]` on by default [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused variable: `immutable_pointer` [INFO] [stdout] --> src/prepackages/ownership.rs:75:9 [INFO] [stdout] | [INFO] [stdout] 75 | let immutable_pointer = &yet_another_string; [INFO] [stdout] | ^^^^^^^^^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_immutable_pointer` [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused variable: `another_immutable_pointer` [INFO] [stdout] --> src/prepackages/ownership.rs:76:9 [INFO] [stdout] | [INFO] [stdout] 76 | let another_immutable_pointer = &yet_another_string; [INFO] [stdout] | ^^^^^^^^^^^^^^^^^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_another_immutable_pointer` [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused variable: `pointer` [INFO] [stdout] --> src/prepackages/ownership.rs:78:9 [INFO] [stdout] | [INFO] [stdout] 78 | let pointer = &mut yet_another_string; [INFO] [stdout] | ^^^^^^^ help: if this is intentional, prefix it with an underscore: `_pointer` [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused variable: `splice_first_four_chars` [INFO] [stdout] --> src/prepackages/ownership.rs:111:9 [INFO] [stdout] | [INFO] [stdout] 111 | let splice_first_four_chars = &s[0..4]; [INFO] [stdout] | ^^^^^^^^^^^^^^^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_splice_first_four_chars` [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused variable: `splice_first_four_chars_also` [INFO] [stdout] --> src/prepackages/ownership.rs:112:9 [INFO] [stdout] | [INFO] [stdout] 112 | let splice_first_four_chars_also = &s[..4]; [INFO] [stdout] | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_splice_first_four_chars_also` [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused variable: `splice_chars_from_fourth` [INFO] [stdout] --> src/prepackages/ownership.rs:114:9 [INFO] [stdout] | [INFO] [stdout] 114 | let splice_chars_from_fourth = &s[4..]; [INFO] [stdout] | ^^^^^^^^^^^^^^^^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_splice_chars_from_fourth` [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused variable: `second_user` [INFO] [stdout] --> src/prepackages/structs.rs:31:9 [INFO] [stdout] | [INFO] [stdout] 31 | let second_user = User { [INFO] [stdout] | ^^^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_second_user` [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused variable: `four` [INFO] [stdout] --> src/prepackages/enums/enums.rs:44:9 [INFO] [stdout] | [INFO] [stdout] 44 | let four = IpAddrKind::V4; [INFO] [stdout] | ^^^^ help: if this is intentional, prefix it with an underscore: `_four` [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused variable: `hip` [INFO] [stdout] --> src/prepackages/enums/enums.rs:45:9 [INFO] [stdout] | [INFO] [stdout] 45 | let hip = IpAddrKind::V6; [INFO] [stdout] | ^^^ help: if this is intentional, prefix it with an underscore: `_hip` [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused variable: `loopback` [INFO] [stdout] --> src/prepackages/enums/enums.rs:47:9 [INFO] [stdout] | [INFO] [stdout] 47 | let loopback = IpAddr { [INFO] [stdout] | ^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_loopback` [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused variable: `concise_loopback` [INFO] [stdout] --> src/prepackages/enums/enums.rs:52:9 [INFO] [stdout] | [INFO] [stdout] 52 | let concise_loopback = ConciseIpAddr::V6(String::from("::1")); [INFO] [stdout] | ^^^^^^^^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_concise_loopback` [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused variable: `home` [INFO] [stdout] --> src/prepackages/enums/enums.rs:54:9 [INFO] [stdout] | [INFO] [stdout] 54 | let home = ConciseIpAddr::V4(127, 0, 0, 1); [INFO] [stdout] | ^^^^ help: if this is intentional, prefix it with an underscore: `_home` [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused variable: `key` [INFO] [stdout] --> src/collections/vectors.rs:35:39 [INFO] [stdout] | [INFO] [stdout] 35 | match counts.iter().max_by_key(|&(key, value)| value) { [INFO] [stdout] | ^^^ help: if this is intentional, prefix it with an underscore: `_key` [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused variable: `nums` [INFO] [stdout] --> src/fp/closures.rs:52:10 [INFO] [stdout] | [INFO] [stdout] 52 | |nums| { [INFO] [stdout] | ^^^^ help: if this is intentional, prefix it with an underscore: `_nums` [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused variable: `num` [INFO] [stdout] --> src/fp/closures.rs:49:6 [INFO] [stdout] | [INFO] [stdout] 49 | |num| { [INFO] [stdout] | ^^^ help: if this is intentional, prefix it with an underscore: `_num` [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused variable: `num` [INFO] [stdout] --> src/fp/closures.rs:59:45 [INFO] [stdout] | [INFO] [stdout] 59 | let mut expensive_result = Cacher::new(|num| { [INFO] [stdout] | ^^^ help: if this is intentional, prefix it with an underscore: `_num` [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused variable: `v1` [INFO] [stdout] --> src/fp/closures.rs:118:13 [INFO] [stdout] | [INFO] [stdout] 118 | let v1 = c.value(1); [INFO] [stdout] | ^^ help: if this is intentional, prefix it with an underscore: `_v1` [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused variable: `reference_a` [INFO] [stdout] --> src/pointers/smart.rs:54:13 [INFO] [stdout] | [INFO] [stdout] 54 | let reference_a = RcList::Cons(3, Rc::clone(&oc_list)); [INFO] [stdout] | ^^^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_reference_a` [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused variable: `reference_b` [INFO] [stdout] --> src/pointers/smart.rs:57:17 [INFO] [stdout] | [INFO] [stdout] 57 | let reference_b = RcList::Cons(4, Rc::clone(&oc_list)); [INFO] [stdout] | ^^^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_reference_b` [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused variable: `boxy` [INFO] [stdout] --> src/pointers/smart.rs:76:13 [INFO] [stdout] | [INFO] [stdout] 76 | let boxy = CustomSmartPointer{ [INFO] [stdout] | ^^^^ help: if this is intentional, prefix it with an underscore: `_boxy` [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused variable: `list` [INFO] [stdout] --> src/pointers/smart.rs:91:13 [INFO] [stdout] | [INFO] [stdout] 91 | let list = Cons(1, Box::new(Cons(2, Box::new(Cons(3, Box::new(Nil)))))); [INFO] [stdout] | ^^^^ help: if this is intentional, prefix it with an underscore: `_list` [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: function is never used: `exercise` [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 is never used: `employee_registration` [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 is never used: `remove_employee` [INFO] [stdout] --> src/collections/exercises.rs:70:4 [INFO] [stdout] | [INFO] [stdout] 70 | fn remove_employee(register: &mut HashMap>, other_words: &mut SplitWhitespace) { [INFO] [stdout] | ^^^^^^^^^^^^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: function is never used: `extract_full_name` [INFO] [stdout] --> src/collections/exercises.rs:90:4 [INFO] [stdout] | [INFO] [stdout] 90 | fn extract_full_name(words: &mut SplitWhitespace, stop: &str) -> Result { [INFO] [stdout] | ^^^^^^^^^^^^^^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: function is never used: `register_employee` [INFO] [stdout] --> src/collections/exercises.rs:108:4 [INFO] [stdout] | [INFO] [stdout] 108 | fn register_employee(register: &mut HashMap>, other_words: &mut SplitWhitespace) { [INFO] [stdout] | ^^^^^^^^^^^^^^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: function is never used: `print_register` [INFO] [stdout] --> src/collections/exercises.rs:119:4 [INFO] [stdout] | [INFO] [stdout] 119 | fn print_register(register: &HashMap>) { [INFO] [stdout] | ^^^^^^^^^^^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: function is never used: `hash_it_up` [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 is never used: `string_stuff` [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 is never used: `got_game` [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 is never read: `value` [INFO] [stdout] --> src/prepackages/gg.rs:7:5 [INFO] [stdout] | [INFO] [stdout] 7 | value: i32 [INFO] [stdout] | ^^^^^^^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: associated function is never used: `value` [INFO] [stdout] --> src/prepackages/gg.rs:19:12 [INFO] [stdout] | [INFO] [stdout] 19 | pub fn value(&self) -> i32 { [INFO] [stdout] | ^^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: function is never used: `play_the_guessing_game` [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 is never used: `own` [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 is never used: `takes_ownership` [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 is never used: `makes_copy` [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 is never used: `references_and_borrowing` [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 is never used: `calculate_length` [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 is never used: `string_to_length` [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 is never used: `print_length` [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 is never used: `legalized_modification` [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 is never used: `slice_stuff` [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 is never used: `first_word` [INFO] [stdout] --> src/prepackages/ownership.rs:137:4 [INFO] [stdout] | [INFO] [stdout] 137 | fn first_word(s: &String) -> usize { [INFO] [stdout] | ^^^^^^^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: struct is never constructed: `User` [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 is never constructed: `Color` [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 is never constructed: `Point` [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 is never used: `structure` [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 is never used: `first_structs` [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 is never used: `build_user` [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: associated function is never used: `area` [INFO] [stdout] --> src/prepackages/structs.rs:61:8 [INFO] [stdout] | [INFO] [stdout] 61 | fn area(&self) -> u32 { [INFO] [stdout] | ^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: associated function is never used: `longest_side` [INFO] [stdout] --> src/prepackages/structs.rs:65:8 [INFO] [stdout] | [INFO] [stdout] 65 | fn longest_side(&self) -> u32 { [INFO] [stdout] | ^^^^^^^^^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: associated function is never used: `is_square` [INFO] [stdout] --> src/prepackages/structs.rs:72:8 [INFO] [stdout] | [INFO] [stdout] 72 | fn is_square(&self) -> bool { [INFO] [stdout] | ^^^^^^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: associated function is never used: `transform_to_circle` [INFO] [stdout] --> src/prepackages/structs.rs:77:8 [INFO] [stdout] | [INFO] [stdout] 77 | fn transform_to_circle(self) -> Circle { [INFO] [stdout] | ^^^^^^^^^^^^^^^^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: associated function is never used: `can_hold` [INFO] [stdout] --> src/prepackages/structs.rs:81:8 [INFO] [stdout] | [INFO] [stdout] 81 | fn can_hold(&self, other: &Rectangle) -> bool { [INFO] [stdout] | ^^^^^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: associated function is never used: `stretch` [INFO] [stdout] --> src/prepackages/structs.rs:85:8 [INFO] [stdout] | [INFO] [stdout] 85 | fn stretch(&mut self, add_height: u32, add_width: u32) { [INFO] [stdout] | ^^^^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: associated function is never used: `square` [INFO] [stdout] --> src/prepackages/structs.rs:91:8 [INFO] [stdout] | [INFO] [stdout] 91 | fn square(size: u32) -> Rectangle { [INFO] [stdout] | ^^^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: associated function is never used: `shrink` [INFO] [stdout] --> src/prepackages/structs.rs:101:8 [INFO] [stdout] | [INFO] [stdout] 101 | fn shrink(&mut self, take_height: u32, take_width: u32) { [INFO] [stdout] | ^^^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: function is never used: `rectangles` [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 is never used: `area` [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 is never used: `variate` [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 is never used: `function_stuff` [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 is never used: `returns_one` [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 is never used: `fizz_buzz` [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 is never used: `loop_return` [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 is never used: `countdown` [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 is never used: `for_loop` [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 is never used: `range_for_loop` [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 is never used: `reverse_range_for_loop` [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: variant is never constructed: `V4` [INFO] [stdout] --> src/prepackages/enums/enums.rs:6:5 [INFO] [stdout] | [INFO] [stdout] 6 | V4, [INFO] [stdout] | ^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: variant is never constructed: `V6` [INFO] [stdout] --> src/prepackages/enums/enums.rs:7:5 [INFO] [stdout] | [INFO] [stdout] 7 | V6 [INFO] [stdout] | ^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: enum is never used: `ConciseIpAddr` [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: associated function is never used: `call` [INFO] [stdout] --> src/prepackages/enums/enums.rs:25:8 [INFO] [stdout] | [INFO] [stdout] 25 | fn call(&self) { [INFO] [stdout] | ^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: function is never used: `enumerate` [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: variant is never constructed: `Alabama` [INFO] [stdout] --> src/prepackages/enums/matching.rs:4:5 [INFO] [stdout] | [INFO] [stdout] 4 | Alabama, [INFO] [stdout] | ^^^^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: variant is never constructed: `Alaska` [INFO] [stdout] --> src/prepackages/enums/matching.rs:5:5 [INFO] [stdout] | [INFO] [stdout] 5 | Alaska, [INFO] [stdout] | ^^^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: variant is never constructed: `Oregon` [INFO] [stdout] --> src/prepackages/enums/matching.rs:6:5 [INFO] [stdout] | [INFO] [stdout] 6 | Oregon, [INFO] [stdout] | ^^^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: enum is never used: `Coin` [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: associated function is never used: `value_in_cents` [INFO] [stdout] --> src/prepackages/enums/matching.rs:17:8 [INFO] [stdout] | [INFO] [stdout] 17 | fn value_in_cents(&self) -> u8 { [INFO] [stdout] | ^^^^^^^^^^^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: function is never used: `match_stuff` [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 is never used: `find_someone` [INFO] [stdout] --> src/prepackages/enums/matching.rs:41:4 [INFO] [stdout] | [INFO] [stdout] 41 | fn find_someone(optionals: &[Option]) { [INFO] [stdout] | ^^^^^^^^^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: function is never used: `plus_one` [INFO] [stdout] --> src/prepackages/enums/matching.rs:49:4 [INFO] [stdout] | [INFO] [stdout] 49 | fn plus_one(x: Option) -> Option { [INFO] [stdout] | ^^^^^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: function is never used: `options` [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: 76 warnings emitted [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: 23 warnings emitted [INFO] [stdout] [INFO] [stdout] [INFO] [stderr] Finished test [unoptimized + debuginfo] target(s) in 3.43s [INFO] running `Command { std: "docker" "inspect" "7f25cca021eb636ec2c0aa5d68df72d90bd42054f0048366da31d729e672f024", kill_on_drop: false }` [INFO] running `Command { std: "docker" "rm" "-f" "7f25cca021eb636ec2c0aa5d68df72d90bd42054f0048366da31d729e672f024", kill_on_drop: false }` [INFO] [stdout] 7f25cca021eb636ec2c0aa5d68df72d90bd42054f0048366da31d729e672f024 [INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-12/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-12/source:/opt/rustwide/workdir:ro,Z" "-v" "/var/lib/crater-agent-workspace/cargo-home:/opt/rustwide/cargo-home:ro,Z" "-v" "/var/lib/crater-agent-workspace/rustup-home:/opt/rustwide/rustup-home:ro,Z" "-e" "SOURCE_DIR=/opt/rustwide/workdir" "-e" "CARGO_TARGET_DIR=/opt/rustwide/target" "-e" "CARGO_INCREMENTAL=0" "-e" "RUST_BACKTRACE=full" "-e" "RUSTFLAGS=--cap-lints=warn" "-e" "CARGO_HOME=/opt/rustwide/cargo-home" "-e" "RUSTUP_HOME=/opt/rustwide/rustup-home" "-w" "/opt/rustwide/workdir" "-m" "1610612736" "--user" "0:0" "--network" "none" "ghcr.io/rust-lang/crates-build-env/linux@sha256:a89201d6b5b9fd45c15d5952ece0a0129e7e80cb26ec023fd59cf09bc26f1604" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2021-09-08" "test" "--frozen", kill_on_drop: false }` [INFO] [stdout] 248621c86f9454f3343b9613a0797ca3198d949fcd4b60ab530fdd6e38d1410e [INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap. [INFO] running `Command { std: "docker" "start" "-a" "248621c86f9454f3343b9613a0797ca3198d949fcd4b60ab530fdd6e38d1410e", kill_on_drop: false }` [INFO] [stderr] warning: unused manifest key: package.licence [INFO] [stderr] warning: unused variable: `key` [INFO] [stderr] --> src/lib.rs:45:39 [INFO] [stderr] | [INFO] [stderr] 45 | match counts.iter().max_by_key(|&(key, value)| value) { [INFO] [stderr] | ^^^ help: if this is intentional, prefix it with an underscore: `_key` [INFO] [stderr] | [INFO] [stderr] = note: `#[warn(unused_variables)]` on by default [INFO] [stderr] [INFO] [stderr] warning: unused variable: `key` [INFO] [stderr] --> src/collections/vectors.rs:35:39 [INFO] [stderr] | [INFO] [stderr] 35 | match counts.iter().max_by_key(|&(key, value)| value) { [INFO] [stderr] | ^^^ help: if this is intentional, prefix it with an underscore: `_key` [INFO] [stderr] [INFO] [stderr] warning: unused variable: `yet_another_string` [INFO] [stderr] --> src/prepackages/ownership.rs:69:9 [INFO] [stderr] | [INFO] [stderr] 69 | let yet_another_string = "Hi".to_string(); [INFO] [stderr] | ^^^^^^^^^^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_yet_another_string` [INFO] [stderr] [INFO] [stderr] warning: unused variable: `immutable_pointer` [INFO] [stderr] --> src/prepackages/ownership.rs:75:9 [INFO] [stderr] | [INFO] [stderr] 75 | let immutable_pointer = &yet_another_string; [INFO] [stderr] | ^^^^^^^^^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_immutable_pointer` [INFO] [stderr] [INFO] [stderr] warning: unused variable: `another_immutable_pointer` [INFO] [stderr] --> src/prepackages/ownership.rs:76:9 [INFO] [stderr] | [INFO] [stderr] 76 | let another_immutable_pointer = &yet_another_string; [INFO] [stderr] | ^^^^^^^^^^^^^^^^^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_another_immutable_pointer` [INFO] [stderr] [INFO] [stderr] warning: unused variable: `pointer` [INFO] [stderr] --> src/prepackages/ownership.rs:78:9 [INFO] [stderr] | [INFO] [stderr] 78 | let pointer = &mut yet_another_string; [INFO] [stderr] | ^^^^^^^ help: if this is intentional, prefix it with an underscore: `_pointer` [INFO] [stderr] [INFO] [stderr] warning: unused variable: `splice_first_four_chars` [INFO] [stderr] --> src/prepackages/ownership.rs:111:9 [INFO] [stderr] | [INFO] [stderr] 111 | let splice_first_four_chars = &s[0..4]; [INFO] [stderr] | ^^^^^^^^^^^^^^^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_splice_first_four_chars` [INFO] [stderr] [INFO] [stderr] warning: unused variable: `splice_first_four_chars_also` [INFO] [stderr] --> src/prepackages/ownership.rs:112:9 [INFO] [stderr] | [INFO] [stderr] 112 | let splice_first_four_chars_also = &s[..4]; [INFO] [stderr] | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_splice_first_four_chars_also` [INFO] [stderr] [INFO] [stderr] warning: unused variable: `splice_chars_from_fourth` [INFO] [stderr] --> src/prepackages/ownership.rs:114:9 [INFO] [stderr] | [INFO] [stderr] 114 | let splice_chars_from_fourth = &s[4..]; [INFO] [stderr] | ^^^^^^^^^^^^^^^^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_splice_chars_from_fourth` [INFO] [stderr] [INFO] [stderr] warning: unused variable: `second_user` [INFO] [stderr] --> src/prepackages/structs.rs:31:9 [INFO] [stderr] | [INFO] [stderr] 31 | let second_user = User { [INFO] [stderr] | ^^^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_second_user` [INFO] [stderr] [INFO] [stderr] warning: unused variable: `four` [INFO] [stderr] --> src/prepackages/enums/enums.rs:44:9 [INFO] [stderr] | [INFO] [stderr] 44 | let four = IpAddrKind::V4; [INFO] [stderr] | ^^^^ help: if this is intentional, prefix it with an underscore: `_four` [INFO] [stderr] [INFO] [stderr] warning: unused variable: `hip` [INFO] [stderr] --> src/prepackages/enums/enums.rs:45:9 [INFO] [stderr] | [INFO] [stderr] 45 | let hip = IpAddrKind::V6; [INFO] [stderr] | ^^^ help: if this is intentional, prefix it with an underscore: `_hip` [INFO] [stderr] [INFO] [stderr] warning: unused variable: `loopback` [INFO] [stderr] --> src/prepackages/enums/enums.rs:47:9 [INFO] [stderr] | [INFO] [stderr] 47 | let loopback = IpAddr { [INFO] [stderr] | ^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_loopback` [INFO] [stderr] [INFO] [stderr] warning: unused variable: `concise_loopback` [INFO] [stderr] --> src/prepackages/enums/enums.rs:52:9 [INFO] [stderr] | [INFO] [stderr] 52 | let concise_loopback = ConciseIpAddr::V6(String::from("::1")); [INFO] [stderr] | ^^^^^^^^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_concise_loopback` [INFO] [stderr] [INFO] [stderr] warning: unused variable: `home` [INFO] [stderr] --> src/prepackages/enums/enums.rs:54:9 [INFO] [stderr] | [INFO] [stderr] 54 | let home = ConciseIpAddr::V4(127, 0, 0, 1); [INFO] [stderr] | ^^^^ help: if this is intentional, prefix it with an underscore: `_home` [INFO] [stderr] [INFO] [stderr] warning: function is never used: `exercise` [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 is never used: `employee_registration` [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 is never used: `remove_employee` [INFO] [stderr] --> src/collections/exercises.rs:70:4 [INFO] [stderr] | [INFO] [stderr] 70 | fn remove_employee(register: &mut HashMap>, other_words: &mut SplitWhitespace) { [INFO] [stderr] | ^^^^^^^^^^^^^^^ [INFO] [stderr] [INFO] [stderr] warning: function is never used: `extract_full_name` [INFO] [stderr] --> src/collections/exercises.rs:90:4 [INFO] [stderr] | [INFO] [stderr] 90 | fn extract_full_name(words: &mut SplitWhitespace, stop: &str) -> Result { [INFO] [stderr] | ^^^^^^^^^^^^^^^^^ [INFO] [stderr] [INFO] [stderr] warning: function is never used: `register_employee` [INFO] [stderr] --> src/collections/exercises.rs:108:4 [INFO] [stderr] | [INFO] [stderr] 108 | fn register_employee(register: &mut HashMap>, other_words: &mut SplitWhitespace) { [INFO] [stderr] | ^^^^^^^^^^^^^^^^^ [INFO] [stderr] [INFO] [stderr] warning: function is never used: `print_register` [INFO] [stderr] --> src/collections/exercises.rs:119:4 [INFO] [stderr] | [INFO] [stderr] 119 | fn print_register(register: &HashMap>) { [INFO] [stderr] | ^^^^^^^^^^^^^^ [INFO] [stderr] [INFO] [stderr] warning: function is never used: `hash_it_up` [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 is never used: `string_stuff` [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 is never used: `got_game` [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 is never used: `to_pig_latin` [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 never used: `is_vowel` [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 is never constructed: `Guess` [INFO] [stderr] --> src/prepackages/gg.rs:6:8 [INFO] [stderr] | [INFO] [stderr] 6 | struct Guess { [INFO] [stderr] | ^^^^^ [INFO] [stderr] [INFO] [stderr] warning: associated function is never used: `new` [INFO] [stderr] --> src/prepackages/gg.rs:11:12 [INFO] [stderr] | [INFO] [stderr] 11 | pub fn new(value: i32) -> Guess { [INFO] [stderr] | ^^^ [INFO] [stderr] [INFO] [stderr] warning: associated function is never used: `value` [INFO] [stderr] --> src/prepackages/gg.rs:19:12 [INFO] [stderr] | [INFO] [stderr] 19 | pub fn value(&self) -> i32 { [INFO] [stderr] | ^^^^^ [INFO] [stderr] [INFO] [stderr] warning: function is never used: `play_the_guessing_game` [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 is never used: `own` [INFO] [stderr] --> src/prepackages/ownership.rs:2:8 [INFO] [stderr] | [INFO] [stderr] 2 | pub fn own() { [INFO] [stderr] | ^^^ [INFO] [stderr] [INFO] [stderr] warning: function is never used: `takes_ownership` [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 is never used: `makes_copy` [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 is never used: `references_and_borrowing` [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 is never used: `calculate_length` [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 is never used: `string_to_length` [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 is never used: `print_length` [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 is never used: `legalized_modification` [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 is never used: `slice_stuff` [INFO] [stderr] --> src/prepackages/ownership.rs:108:4 [INFO] [stderr] | [INFO] [stderr] 108 | fn slice_stuff() { [INFO] [stderr] | ^^^^^^^^^^^ [INFO] [stderr] [INFO] [stderr] warning: function is never used: `slice_first_word` [INFO] [stderr] --> src/prepackages/ownership.rs:121:4 [INFO] [stderr] | [INFO] [stderr] 121 | fn slice_first_word(s: &String) -> &str { [INFO] [stderr] | ^^^^^^^^^^^^^^^^ [INFO] [stderr] [INFO] [stderr] warning: function is never used: `first_word` [INFO] [stderr] --> src/prepackages/ownership.rs:137:4 [INFO] [stderr] | [INFO] [stderr] 137 | fn first_word(s: &String) -> usize { [INFO] [stderr] | ^^^^^^^^^^ [INFO] [stderr] [INFO] [stderr] warning: struct is never constructed: `User` [INFO] [stderr] --> src/prepackages/structs.rs:2:8 [INFO] [stderr] | [INFO] [stderr] 2 | struct User { [INFO] [stderr] | ^^^^ [INFO] [stderr] [INFO] [stderr] warning: struct is never constructed: `Color` [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 is never constructed: `Point` [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 is never used: `structure` [INFO] [stderr] --> src/prepackages/structs.rs:12:8 [INFO] [stderr] | [INFO] [stderr] 12 | pub fn structure() { [INFO] [stderr] | ^^^^^^^^^ [INFO] [stderr] [INFO] [stderr] warning: function is never used: `first_structs` [INFO] [stderr] --> src/prepackages/structs.rs:19:4 [INFO] [stderr] | [INFO] [stderr] 19 | fn first_structs() { [INFO] [stderr] | ^^^^^^^^^^^^^ [INFO] [stderr] [INFO] [stderr] warning: function is never used: `build_user` [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: associated function is never used: `area` [INFO] [stderr] --> src/prepackages/structs.rs:61:8 [INFO] [stderr] | [INFO] [stderr] 61 | fn area(&self) -> u32 { [INFO] [stderr] | ^^^^ [INFO] [stderr] [INFO] [stderr] warning: associated function is never used: `longest_side` [INFO] [stderr] --> src/prepackages/structs.rs:65:8 [INFO] [stderr] | [INFO] [stderr] 65 | fn longest_side(&self) -> u32 { [INFO] [stderr] | ^^^^^^^^^^^^ [INFO] [stderr] [INFO] [stderr] warning: associated function is never used: `is_square` [INFO] [stderr] --> src/prepackages/structs.rs:72:8 [INFO] [stderr] | [INFO] [stderr] 72 | fn is_square(&self) -> bool { [INFO] [stderr] | ^^^^^^^^^ [INFO] [stderr] [INFO] [stderr] warning: associated function is never used: `transform_to_circle` [INFO] [stderr] --> src/prepackages/structs.rs:77:8 [INFO] [stderr] | [INFO] [stderr] 77 | fn transform_to_circle(self) -> Circle { [INFO] [stderr] | ^^^^^^^^^^^^^^^^^^^ [INFO] [stderr] [INFO] [stderr] warning: associated function is never used: `can_hold` [INFO] [stderr] --> src/prepackages/structs.rs:81:8 [INFO] [stderr] | [INFO] [stderr] 81 | fn can_hold(&self, other: &Rectangle) -> bool { [INFO] [stderr] | ^^^^^^^^ [INFO] [stderr] [INFO] [stderr] warning: associated function is never used: `stretch` [INFO] [stderr] --> src/prepackages/structs.rs:85:8 [INFO] [stderr] | [INFO] [stderr] 85 | fn stretch(&mut self, add_height: u32, add_width: u32) { [INFO] [stderr] | ^^^^^^^ [INFO] [stderr] [INFO] [stderr] warning: associated function is never used: `square` [INFO] [stderr] --> src/prepackages/structs.rs:91:8 [INFO] [stderr] | [INFO] [stderr] 91 | fn square(size: u32) -> Rectangle { [INFO] [stderr] | ^^^^^^ [INFO] [stderr] [INFO] [stderr] warning: associated function is never used: `shrink` [INFO] [stderr] --> src/prepackages/structs.rs:101:8 [INFO] [stderr] | [INFO] [stderr] 101 | fn shrink(&mut self, take_height: u32, take_width: u32) { [INFO] [stderr] | ^^^^^^ [INFO] [stderr] [INFO] [stderr] warning: function is never used: `rectangles` [INFO] [stderr] --> src/prepackages/structs.rs:107:4 [INFO] [stderr] | [INFO] [stderr] 107 | fn rectangles() { [INFO] [stderr] | ^^^^^^^^^^ [INFO] [stderr] [INFO] [stderr] warning: function is never used: `area` [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 is never used: `variate` [INFO] [stderr] --> src/prepackages/variables.rs:2:8 [INFO] [stderr] | [INFO] [stderr] 2 | pub fn variate() { [INFO] [stderr] | ^^^^^^^ [INFO] [stderr] [INFO] [stderr] warning: function is never used: `function_stuff` [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 is never used: `returns_one` [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 is never used: `fizz_buzz` [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 is never used: `loop_return` [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 is never used: `countdown` [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 is never used: `for_loop` [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 is never used: `range_for_loop` [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 is never used: `reverse_range_for_loop` [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: variant is never constructed: `V4` [INFO] [stderr] --> src/prepackages/enums/enums.rs:6:5 [INFO] [stderr] | [INFO] [stderr] 6 | V4, [INFO] [stderr] | ^^ [INFO] [stderr] [INFO] [stderr] warning: variant is never constructed: `V6` [INFO] [stderr] --> src/prepackages/enums/enums.rs:7:5 [INFO] [stderr] | [INFO] [stderr] 7 | V6 [INFO] [stderr] | ^^ [INFO] [stderr] [INFO] [stderr] warning: enum is never used: `ConciseIpAddr` [INFO] [stderr] --> src/prepackages/enums/enums.rs:10:6 [INFO] [stderr] | [INFO] [stderr] 10 | enum ConciseIpAddr { [INFO] [stderr] | ^^^^^^^^^^^^^ [INFO] [stderr] [INFO] [stderr] warning: associated function is never used: `call` [INFO] [stderr] --> src/prepackages/enums/enums.rs:25:8 [INFO] [stderr] | [INFO] [stderr] 25 | fn call(&self) { [INFO] [stderr] | ^^^^ [INFO] [stderr] [INFO] [stderr] warning: function is never used: `enumerate` [INFO] [stderr] --> src/prepackages/enums/enums.rs:42:8 [INFO] [stderr] | [INFO] [stderr] 42 | pub fn enumerate() { [INFO] [stderr] | ^^^^^^^^^ [INFO] [stderr] [INFO] [stderr] warning: variant is never constructed: `Alabama` [INFO] [stderr] --> src/prepackages/enums/matching.rs:4:5 [INFO] [stderr] | [INFO] [stderr] 4 | Alabama, [INFO] [stderr] | ^^^^^^^ [INFO] [stderr] [INFO] [stderr] warning: variant is never constructed: `Alaska` [INFO] [stderr] --> src/prepackages/enums/matching.rs:5:5 [INFO] [stderr] | [INFO] [stderr] 5 | Alaska, [INFO] [stderr] | ^^^^^^ [INFO] [stderr] [INFO] [stderr] warning: variant is never constructed: `Oregon` [INFO] [stderr] --> src/prepackages/enums/matching.rs:6:5 [INFO] [stderr] | [INFO] [stderr] 6 | Oregon, [INFO] [stderr] | ^^^^^^ [INFO] [stderr] [INFO] [stderr] warning: enum is never used: `Coin` [INFO] [stderr] --> src/prepackages/enums/matching.rs:9:6 [INFO] [stderr] | [INFO] [stderr] 9 | enum Coin { [INFO] [stderr] | ^^^^ [INFO] [stderr] [INFO] [stderr] warning: associated function is never used: `value_in_cents` [INFO] [stderr] --> src/prepackages/enums/matching.rs:17:8 [INFO] [stderr] | [INFO] [stderr] 17 | fn value_in_cents(&self) -> u8 { [INFO] [stderr] | ^^^^^^^^^^^^^^ [INFO] [stderr] [INFO] [stderr] warning: function is never used: `match_stuff` [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 is never used: `find_someone` [INFO] [stderr] --> src/prepackages/enums/matching.rs:41:4 [INFO] [stderr] | [INFO] [stderr] 41 | fn find_someone(optionals: &[Option]) { [INFO] [stderr] | ^^^^^^^^^^^^ [INFO] [stderr] [INFO] [stderr] warning: function is never used: `plus_one` [INFO] [stderr] --> src/prepackages/enums/matching.rs:49:4 [INFO] [stderr] | [INFO] [stderr] 49 | fn plus_one(x: Option) -> Option { [INFO] [stderr] | ^^^^^^^^ [INFO] [stderr] [INFO] [stderr] warning: function is never used: `options` [INFO] [stderr] --> src/prepackages/enums/options.rs:2:8 [INFO] [stderr] | [INFO] [stderr] 2 | pub fn options() { [INFO] [stderr] | ^^^^^^^ [INFO] [stderr] [INFO] [stderr] warning: field is never read: `value` [INFO] [stderr] --> src/prepackages/gg.rs:7:5 [INFO] [stderr] | [INFO] [stderr] 7 | value: i32 [INFO] [stderr] | ^^^^^^^^^^ [INFO] [stderr] [INFO] [stderr] warning: `study-crate` (lib) generated 80 warnings [INFO] [stderr] warning: `study-crate` (lib test) generated 76 warnings (75 duplicates) [INFO] [stderr] warning: unused import: `SystemTimeError` [INFO] [stderr] --> src/fp/closures.rs:79:33 [INFO] [stderr] | [INFO] [stderr] 79 | use std::time::{SystemTime, SystemTimeError}; [INFO] [stderr] | ^^^^^^^^^^^^^^^ [INFO] [stderr] | [INFO] [stderr] = note: `#[warn(unused_imports)]` on by default [INFO] [stderr] [INFO] [stderr] warning: unused variable: `yet_another_string` [INFO] [stderr] --> src/prepackages/ownership.rs:69:9 [INFO] [stderr] | [INFO] [stderr] 69 | let yet_another_string = "Hi".to_string(); [INFO] [stderr] | ^^^^^^^^^^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_yet_another_string` [INFO] [stderr] | [INFO] [stderr] = note: `#[warn(unused_variables)]` on by default [INFO] [stderr] [INFO] [stderr] warning: unused variable: `nums` [INFO] [stderr] --> src/fp/closures.rs:52:10 [INFO] [stderr] | [INFO] [stderr] 52 | |nums| { [INFO] [stderr] | ^^^^ help: if this is intentional, prefix it with an underscore: `_nums` [INFO] [stderr] [INFO] [stderr] warning: unused variable: `num` [INFO] [stderr] --> src/fp/closures.rs:49:6 [INFO] [stderr] | [INFO] [stderr] 49 | |num| { [INFO] [stderr] | ^^^ help: if this is intentional, prefix it with an underscore: `_num` [INFO] [stderr] [INFO] [stderr] warning: unused variable: `num` [INFO] [stderr] --> src/fp/closures.rs:59:45 [INFO] [stderr] | [INFO] [stderr] 59 | let mut expensive_result = Cacher::new(|num| { [INFO] [stderr] | ^^^ help: if this is intentional, prefix it with an underscore: `_num` [INFO] [stderr] [INFO] [stderr] warning: unused variable: `v1` [INFO] [stderr] --> src/fp/closures.rs:118:13 [INFO] [stderr] | [INFO] [stderr] 118 | let v1 = c.value(1); [INFO] [stderr] | ^^ help: if this is intentional, prefix it with an underscore: `_v1` [INFO] [stderr] [INFO] [stderr] warning: unused variable: `reference_a` [INFO] [stderr] --> src/pointers/smart.rs:54:13 [INFO] [stderr] | [INFO] [stderr] 54 | let reference_a = RcList::Cons(3, Rc::clone(&oc_list)); [INFO] [stderr] | ^^^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_reference_a` [INFO] [stderr] [INFO] [stderr] warning: unused variable: `reference_b` [INFO] [stderr] --> src/pointers/smart.rs:57:17 [INFO] [stderr] | [INFO] [stderr] 57 | let reference_b = RcList::Cons(4, Rc::clone(&oc_list)); [INFO] [stderr] | ^^^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_reference_b` [INFO] [stderr] [INFO] [stderr] warning: unused variable: `boxy` [INFO] [stderr] --> src/pointers/smart.rs:76:13 [INFO] [stderr] | [INFO] [stderr] 76 | let boxy = CustomSmartPointer{ [INFO] [stderr] | ^^^^ help: if this is intentional, prefix it with an underscore: `_boxy` [INFO] [stderr] [INFO] [stderr] warning: unused variable: `list` [INFO] [stderr] --> src/pointers/smart.rs:91:13 [INFO] [stderr] | [INFO] [stderr] 91 | let list = Cons(1, Box::new(Cons(2, Box::new(Cons(3, Box::new(Nil)))))); [INFO] [stderr] | ^^^^ help: if this is intentional, prefix it with an underscore: `_list` [INFO] [stderr] [INFO] [stderr] warning: `study-crate` (bin "study-crate" test) generated 23 warnings (13 duplicates) [INFO] [stderr] warning: `study-crate` (bin "study-crate") generated 17 warnings (17 duplicates) [INFO] [stderr] Finished test [unoptimized + debuginfo] target(s) in 0.03s [INFO] [stdout] [INFO] [stderr] Running unittests (/opt/rustwide/target/debug/deps/study_crate-919628b878db6654) [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 tests::find_mode_chars ... 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] [stderr] Running unittests (/opt/rustwide/target/debug/deps/study_crate-89b312677b5ac16c) [INFO] [stdout] test prepackages::gg::tests::panics_on_smaller_than_1 - should panic ... ok [INFO] [stdout] test prepackages::gg::tests::panics_on_greater_than_100 - should panic ... ok [INFO] [stdout] [INFO] [stdout] test result: ok. 8 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out; finished in 0.04s [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] running 33 tests [INFO] [stdout] test collections::strings::tests::to_pig_latin_identifies_consonant ... ok [INFO] [stdout] test collections::strings::tests::to_pig_latin_identifies_vowel ... ok [INFO] [stdout] test collections::strings::tests::to_pig_latin_identifies_pseudo_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 fp::closures::tests::move_value_closure ... ok [INFO] [stdout] test generics::functions::tests::test_find_largest ... ok [INFO] [stdout] test oop::rust_states_lib::tests::test_blog_lifecycle ... ok [INFO] [stdout] test oop::states::tests::test_blog_lifecycle ... ok [INFO] [stdout] test pointers::smart::tests::box_vs_pointer ... ok [INFO] [stdout] test concurrent::lock::tests::test_contested_lock ... ok [INFO] [stdout] test pointers::smart::tests::create_cons_list ... ok [INFO] [stdout] test pointers::smart::tests::diy_box ... ok [INFO] [stdout] test pointers::smart::tests::early_drop ... ok [INFO] [stdout] test pointers::smart::tests::multiple_references_cons ... ok [INFO] [stdout] test pointers::smart::tests::say_hello ... 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 oop::rust_states_lib::tests::test_private_constructor ... ok [INFO] [stdout] test concurrent::classic::tests::vec_moves ... ok [INFO] [stdout] test pointers::smart::tests::drop_it_like_it_is_out_of_scope ... ok [INFO] [stdout] test pointers::smart::tests::first_box ... ok [INFO] [stdout] test fp::closures::tests::call_with_different_values ... 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::returns_cached_value ... ok [INFO] [stdout] test fp::closures::tests::insanity_is_accepted ... 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] [stderr] error: test failed, to rerun pass '--bin study-crate' [INFO] [stdout] [INFO] [stdout] failures: [INFO] [stdout] [INFO] [stdout] ---- exceptions::tests::test_read_username_from_file stdout ---- [INFO] [stdout] thread 'exceptions::tests::test_read_username_from_file' panicked at 'assertion failed: result.is_ok()', src/exceptions.rs:78:9 [INFO] [stdout] stack backtrace: [INFO] [stdout] 0: 0x55b79360117c - std::backtrace_rs::backtrace::libunwind::trace::h51faa62df48810e4 [INFO] [stdout] at /rustc/e784c962ea252f0874a4305168077e7048cb39e9/library/std/src/../../backtrace/src/backtrace/libunwind.rs:90:5 [INFO] [stdout] 1: 0x55b79360117c - std::backtrace_rs::backtrace::trace_unsynchronized::h91de4d8e16d607e4 [INFO] [stdout] at /rustc/e784c962ea252f0874a4305168077e7048cb39e9/library/std/src/../../backtrace/src/backtrace/mod.rs:66:5 [INFO] [stdout] 2: 0x55b79360117c - std::sys_common::backtrace::_print_fmt::h71b0935f97e4322c [INFO] [stdout] at /rustc/e784c962ea252f0874a4305168077e7048cb39e9/library/std/src/sys_common/backtrace.rs:67:5 [INFO] [stdout] 3: 0x55b79360117c - ::fmt::h9a78218788c14e18 [INFO] [stdout] at /rustc/e784c962ea252f0874a4305168077e7048cb39e9/library/std/src/sys_common/backtrace.rs:46:22 [INFO] [stdout] 4: 0x55b79362465c - core::fmt::write::h3381b3176fe2b3d3 [INFO] [stdout] at /rustc/e784c962ea252f0874a4305168077e7048cb39e9/library/core/src/fmt/mod.rs:1150:17 [INFO] [stdout] 5: 0x55b7935fdcd5 - std::io::Write::write_fmt::hb6383f24fe197d3c [INFO] [stdout] at /rustc/e784c962ea252f0874a4305168077e7048cb39e9/library/std/src/io/mod.rs:1667:15 [INFO] [stdout] 6: 0x55b793602e30 - std::sys_common::backtrace::_print::h4b77abc4d907ed0e [INFO] [stdout] at /rustc/e784c962ea252f0874a4305168077e7048cb39e9/library/std/src/sys_common/backtrace.rs:49:5 [INFO] [stdout] 7: 0x55b793602e30 - std::sys_common::backtrace::print::hb170c60b542377ad [INFO] [stdout] at /rustc/e784c962ea252f0874a4305168077e7048cb39e9/library/std/src/sys_common/backtrace.rs:36:9 [INFO] [stdout] 8: 0x55b793602e30 - std::panicking::default_hook::{{closure}}::h12bbda9af8901ee3 [INFO] [stdout] at /rustc/e784c962ea252f0874a4305168077e7048cb39e9/library/std/src/panicking.rs:210:50 [INFO] [stdout] 9: 0x55b793602a22 - std::panicking::default_hook::h8c6c66d3f3ba6768 [INFO] [stdout] at /rustc/e784c962ea252f0874a4305168077e7048cb39e9/library/std/src/panicking.rs:224:9 [INFO] [stdout] 10: 0x55b7936034e4 - std::panicking::rust_panic_with_hook::h36f2fa0bb09f4069 [INFO] [stdout] at /rustc/e784c962ea252f0874a4305168077e7048cb39e9/library/std/src/panicking.rs:624:17 [INFO] [stdout] 11: 0x55b793602f92 - std::panicking::begin_panic_handler::{{closure}}::h9c42b65a42d06a7a [INFO] [stdout] at /rustc/e784c962ea252f0874a4305168077e7048cb39e9/library/std/src/panicking.rs:519:13 [INFO] [stdout] 12: 0x55b793601644 - std::sys_common::backtrace::__rust_end_short_backtrace::hc791bddfe31e532c [INFO] [stdout] at /rustc/e784c962ea252f0874a4305168077e7048cb39e9/library/std/src/sys_common/backtrace.rs:141:18 [INFO] [stdout] 13: 0x55b793602f29 - rust_begin_unwind [INFO] [stdout] at /rustc/e784c962ea252f0874a4305168077e7048cb39e9/library/std/src/panicking.rs:517:5 [INFO] [stdout] 14: 0x55b79356e661 - core::panicking::panic_fmt::hf9de31d4acbce4db [INFO] [stdout] at /rustc/e784c962ea252f0874a4305168077e7048cb39e9/library/core/src/panicking.rs:101:14 [INFO] [stdout] 15: 0x55b79356e5ad - core::panicking::panic::h8a6bc58a21c6c095 [INFO] [stdout] at /rustc/e784c962ea252f0874a4305168077e7048cb39e9/library/core/src/panicking.rs:50:5 [INFO] [stdout] 16: 0x55b7935943b2 - study_crate::exceptions::tests::test_read_username_from_file::h5ddc4206d1b9d83a [INFO] [stdout] at /opt/rustwide/workdir/src/exceptions.rs:78:9 [INFO] [stdout] 17: 0x55b7935942da - study_crate::exceptions::tests::test_read_username_from_file::{{closure}}::h65b5e316f8458e62 [INFO] [stdout] at /opt/rustwide/workdir/src/exceptions.rs:76:5 [INFO] [stdout] 18: 0x55b79358823e - core::ops::function::FnOnce::call_once::h4d56498ca354879a [INFO] [stdout] at /rustc/e784c962ea252f0874a4305168077e7048cb39e9/library/core/src/ops/function.rs:227:5 [INFO] [stdout] 19: 0x55b7935db413 - core::ops::function::FnOnce::call_once::h61555a204318cc58 [INFO] [stdout] at /rustc/e784c962ea252f0874a4305168077e7048cb39e9/library/core/src/ops/function.rs:227:5 [INFO] [stdout] 20: 0x55b7935db413 - test::__rust_begin_short_backtrace::h8331e7b1cc7a6e62 [INFO] [stdout] at /rustc/e784c962ea252f0874a4305168077e7048cb39e9/library/test/src/lib.rs:578:5 [INFO] [stdout] 21: 0x55b7935d9e98 - as core::ops::function::FnOnce>::call_once::h98582e597fa7f145 [INFO] [stdout] at /rustc/e784c962ea252f0874a4305168077e7048cb39e9/library/alloc/src/boxed.rs:1636:9 [INFO] [stdout] 22: 0x55b7935d9e98 - as core::ops::function::FnOnce<()>>::call_once::h38fa7a0826ecff45 [INFO] [stdout] at /rustc/e784c962ea252f0874a4305168077e7048cb39e9/library/core/src/panic/unwind_safe.rs:271:9 [INFO] [stdout] 23: 0x55b7935d9e98 - std::panicking::try::do_call::h5b27d1cfffaa9f87 [INFO] [stdout] at /rustc/e784c962ea252f0874a4305168077e7048cb39e9/library/std/src/panicking.rs:403:40 [INFO] [stdout] 24: 0x55b7935d9e98 - std::panicking::try::h86f7124b3264bcbe [INFO] [stdout] at /rustc/e784c962ea252f0874a4305168077e7048cb39e9/library/std/src/panicking.rs:367:19 [INFO] [stdout] 25: 0x55b7935d9e98 - std::panic::catch_unwind::h42dadf3598df7528 [INFO] [stdout] at /rustc/e784c962ea252f0874a4305168077e7048cb39e9/library/std/src/panic.rs:129:14 [INFO] [stdout] 26: 0x55b7935d9e98 - test::run_test_in_process::h9d4b7510f0910050 [INFO] [stdout] at /rustc/e784c962ea252f0874a4305168077e7048cb39e9/library/test/src/lib.rs:601:18 [INFO] [stdout] 27: 0x55b7935d9e98 - test::run_test::run_test_inner::{{closure}}::h9b17f1fd181fe294 [INFO] [stdout] at /rustc/e784c962ea252f0874a4305168077e7048cb39e9/library/test/src/lib.rs:493:39 [INFO] [stdout] 28: 0x55b7935a79ee - test::run_test::run_test_inner::{{closure}}::h476f9211dfec6075 [INFO] [stdout] at /rustc/e784c962ea252f0874a4305168077e7048cb39e9/library/test/src/lib.rs:520:37 [INFO] [stdout] 29: 0x55b7935a79ee - std::sys_common::backtrace::__rust_begin_short_backtrace::h5c2db6945645950d [INFO] [stdout] at /rustc/e784c962ea252f0874a4305168077e7048cb39e9/library/std/src/sys_common/backtrace.rs:125:18 [INFO] [stdout] 30: 0x55b7935ac288 - std::thread::Builder::spawn_unchecked::{{closure}}::{{closure}}::h791169ea9ba5492d [INFO] [stdout] at /rustc/e784c962ea252f0874a4305168077e7048cb39e9/library/std/src/thread/mod.rs:481:17 [INFO] [stdout] 31: 0x55b7935ac288 - as core::ops::function::FnOnce<()>>::call_once::he930357ede3f4b4d [INFO] [stdout] at /rustc/e784c962ea252f0874a4305168077e7048cb39e9/library/core/src/panic/unwind_safe.rs:271:9 [INFO] [stdout] 32: 0x55b7935ac288 - std::panicking::try::do_call::h0de4b1dd08a9aa80 [INFO] [stdout] at /rustc/e784c962ea252f0874a4305168077e7048cb39e9/library/std/src/panicking.rs:403:40 [INFO] [stdout] 33: 0x55b7935ac288 - std::panicking::try::hf5b5c530df698d97 [INFO] [stdout] at /rustc/e784c962ea252f0874a4305168077e7048cb39e9/library/std/src/panicking.rs:367:19 [INFO] [stdout] 34: 0x55b7935ac288 - std::panic::catch_unwind::hed97078f17dbf191 [INFO] [stdout] at /rustc/e784c962ea252f0874a4305168077e7048cb39e9/library/std/src/panic.rs:129:14 [INFO] [stdout] 35: 0x55b7935ac288 - std::thread::Builder::spawn_unchecked::{{closure}}::h2e673950929cba93 [INFO] [stdout] at /rustc/e784c962ea252f0874a4305168077e7048cb39e9/library/std/src/thread/mod.rs:480:30 [INFO] [stdout] 36: 0x55b7935ac288 - core::ops::function::FnOnce::call_once{{vtable.shim}}::h8e18ddd18a52f010 [INFO] [stdout] at /rustc/e784c962ea252f0874a4305168077e7048cb39e9/library/core/src/ops/function.rs:227:5 [INFO] [stdout] 37: 0x55b7936081e3 - as core::ops::function::FnOnce>::call_once::hbbbb32ef11ea0ad2 [INFO] [stdout] at /rustc/e784c962ea252f0874a4305168077e7048cb39e9/library/alloc/src/boxed.rs:1636:9 [INFO] [stdout] 38: 0x55b7936081e3 - as core::ops::function::FnOnce>::call_once::h3b8ef23699fc5385 [INFO] [stdout] at /rustc/e784c962ea252f0874a4305168077e7048cb39e9/library/alloc/src/boxed.rs:1636:9 [INFO] [stdout] 39: 0x55b7936081e3 - std::sys::unix::thread::Thread::new::thread_start::ha57f5cba35f709b7 [INFO] [stdout] at /rustc/e784c962ea252f0874a4305168077e7048cb39e9/library/std/src/sys/unix/thread.rs:106:17 [INFO] [stdout] 40: 0x7f2163b93609 - start_thread [INFO] [stdout] 41: 0x7f2163e1e293 - clone [INFO] [stdout] 42: 0x0 - [INFO] [stdout] [INFO] [stdout] ---- exceptions::tests::test_succinct_read stdout ---- [INFO] [stdout] thread 'exceptions::tests::test_succinct_read' panicked at 'assertion failed: result.is_ok()', src/exceptions.rs:85:9 [INFO] [stdout] stack backtrace: [INFO] [stdout] 0: 0x55b79360117c - std::backtrace_rs::backtrace::libunwind::trace::h51faa62df48810e4 [INFO] [stdout] at /rustc/e784c962ea252f0874a4305168077e7048cb39e9/library/std/src/../../backtrace/src/backtrace/libunwind.rs:90:5 [INFO] [stdout] 1: 0x55b79360117c - std::backtrace_rs::backtrace::trace_unsynchronized::h91de4d8e16d607e4 [INFO] [stdout] at /rustc/e784c962ea252f0874a4305168077e7048cb39e9/library/std/src/../../backtrace/src/backtrace/mod.rs:66:5 [INFO] [stdout] 2: 0x55b79360117c - std::sys_common::backtrace::_print_fmt::h71b0935f97e4322c [INFO] [stdout] at /rustc/e784c962ea252f0874a4305168077e7048cb39e9/library/std/src/sys_common/backtrace.rs:67:5 [INFO] [stdout] 3: 0x55b79360117c - ::fmt::h9a78218788c14e18 [INFO] [stdout] at /rustc/e784c962ea252f0874a4305168077e7048cb39e9/library/std/src/sys_common/backtrace.rs:46:22 [INFO] [stdout] 4: 0x55b79362465c - core::fmt::write::h3381b3176fe2b3d3 [INFO] [stdout] at /rustc/e784c962ea252f0874a4305168077e7048cb39e9/library/core/src/fmt/mod.rs:1150:17 [INFO] [stdout] 5: 0x55b7935fdcd5 - std::io::Write::write_fmt::hb6383f24fe197d3c [INFO] [stdout] at /rustc/e784c962ea252f0874a4305168077e7048cb39e9/library/std/src/io/mod.rs:1667:15 [INFO] [stdout] 6: 0x55b793602e30 - std::sys_common::backtrace::_print::h4b77abc4d907ed0e [INFO] [stdout] at /rustc/e784c962ea252f0874a4305168077e7048cb39e9/library/std/src/sys_common/backtrace.rs:49:5 [INFO] [stdout] 7: 0x55b793602e30 - std::sys_common::backtrace::print::hb170c60b542377ad [INFO] [stdout] at /rustc/e784c962ea252f0874a4305168077e7048cb39e9/library/std/src/sys_common/backtrace.rs:36:9 [INFO] [stdout] 8: 0x55b793602e30 - std::panicking::default_hook::{{closure}}::h12bbda9af8901ee3 [INFO] [stdout] at /rustc/e784c962ea252f0874a4305168077e7048cb39e9/library/std/src/panicking.rs:210:50 [INFO] [stdout] 9: 0x55b793602a22 - std::panicking::default_hook::h8c6c66d3f3ba6768 [INFO] [stdout] at /rustc/e784c962ea252f0874a4305168077e7048cb39e9/library/std/src/panicking.rs:224:9 [INFO] [stdout] 10: 0x55b7936034e4 - std::panicking::rust_panic_with_hook::h36f2fa0bb09f4069 [INFO] [stdout] at /rustc/e784c962ea252f0874a4305168077e7048cb39e9/library/std/src/panicking.rs:624:17 [INFO] [stdout] 11: 0x55b793602f92 - std::panicking::begin_panic_handler::{{closure}}::h9c42b65a42d06a7a [INFO] [stdout] at /rustc/e784c962ea252f0874a4305168077e7048cb39e9/library/std/src/panicking.rs:519:13 [INFO] [stdout] 12: 0x55b793601644 - std::sys_common::backtrace::__rust_end_short_backtrace::hc791bddfe31e532c [INFO] [stdout] at /rustc/e784c962ea252f0874a4305168077e7048cb39e9/library/std/src/sys_common/backtrace.rs:141:18 [INFO] [stdout] 13: 0x55b793602f29 - rust_begin_unwind [INFO] [stdout] at /rustc/e784c962ea252f0874a4305168077e7048cb39e9/library/std/src/panicking.rs:517:5 [INFO] [stdout] 14: 0x55b79356e661 - core::panicking::panic_fmt::hf9de31d4acbce4db [INFO] [stdout] at /rustc/e784c962ea252f0874a4305168077e7048cb39e9/library/core/src/panicking.rs:101:14 [INFO] [stdout] 15: 0x55b79356e5ad - core::panicking::panic::h8a6bc58a21c6c095 [INFO] [stdout] at /rustc/e784c962ea252f0874a4305168077e7048cb39e9/library/core/src/panicking.rs:50:5 [INFO] [stdout] 16: 0x55b793594582 - study_crate::exceptions::tests::test_succinct_read::h7cd7c438ea71df8c [INFO] [stdout] at /opt/rustwide/workdir/src/exceptions.rs:85:9 [INFO] [stdout] 17: 0x55b7935944aa - study_crate::exceptions::tests::test_succinct_read::{{closure}}::ha32b8ac4aae70629 [INFO] [stdout] at /opt/rustwide/workdir/src/exceptions.rs:83:5 [INFO] [stdout] 18: 0x55b79358839e - core::ops::function::FnOnce::call_once::h721ff74dce4484ea [INFO] [stdout] at /rustc/e784c962ea252f0874a4305168077e7048cb39e9/library/core/src/ops/function.rs:227:5 [INFO] [stdout] 19: 0x55b7935db413 - core::ops::function::FnOnce::call_once::h61555a204318cc58 [INFO] [stdout] at /rustc/e784c962ea252f0874a4305168077e7048cb39e9/library/core/src/ops/function.rs:227:5 [INFO] [stdout] 20: 0x55b7935db413 - test::__rust_begin_short_backtrace::h8331e7b1cc7a6e62 [INFO] [stdout] at /rustc/e784c962ea252f0874a4305168077e7048cb39e9/library/test/src/lib.rs:578:5 [INFO] [stdout] 21: 0x55b7935d9e98 - as core::ops::function::FnOnce>::call_once::h98582e597fa7f145 [INFO] [stdout] at /rustc/e784c962ea252f0874a4305168077e7048cb39e9/library/alloc/src/boxed.rs:1636:9 [INFO] [stdout] 22: 0x55b7935d9e98 - as core::ops::function::FnOnce<()>>::call_once::h38fa7a0826ecff45 [INFO] [stdout] at /rustc/e784c962ea252f0874a4305168077e7048cb39e9/library/core/src/panic/unwind_safe.rs:271:9 [INFO] [stdout] 23: 0x55b7935d9e98 - std::panicking::try::do_call::h5b27d1cfffaa9f87 [INFO] [stdout] at /rustc/e784c962ea252f0874a4305168077e7048cb39e9/library/std/src/panicking.rs:403:40 [INFO] [stdout] 24: 0x55b7935d9e98 - std::panicking::try::h86f7124b3264bcbe [INFO] [stdout] at /rustc/e784c962ea252f0874a4305168077e7048cb39e9/library/std/src/panicking.rs:367:19 [INFO] [stdout] 25: 0x55b7935d9e98 - std::panic::catch_unwind::h42dadf3598df7528 [INFO] [stdout] at /rustc/e784c962ea252f0874a4305168077e7048cb39e9/library/std/src/panic.rs:129:14 [INFO] [stdout] 26: 0x55b7935d9e98 - test::run_test_in_process::h9d4b7510f0910050 [INFO] [stdout] at /rustc/e784c962ea252f0874a4305168077e7048cb39e9/library/test/src/lib.rs:601:18 [INFO] [stdout] 27: 0x55b7935d9e98 - test::run_test::run_test_inner::{{closure}}::h9b17f1fd181fe294 [INFO] [stdout] at /rustc/e784c962ea252f0874a4305168077e7048cb39e9/library/test/src/lib.rs:493:39 [INFO] [stdout] 28: 0x55b7935a79ee - test::run_test::run_test_inner::{{closure}}::h476f9211dfec6075 [INFO] [stdout] at /rustc/e784c962ea252f0874a4305168077e7048cb39e9/library/test/src/lib.rs:520:37 [INFO] [stdout] 29: 0x55b7935a79ee - std::sys_common::backtrace::__rust_begin_short_backtrace::h5c2db6945645950d [INFO] [stdout] at /rustc/e784c962ea252f0874a4305168077e7048cb39e9/library/std/src/sys_common/backtrace.rs:125:18 [INFO] [stdout] 30: 0x55b7935ac288 - std::thread::Builder::spawn_unchecked::{{closure}}::{{closure}}::h791169ea9ba5492d [INFO] [stdout] at /rustc/e784c962ea252f0874a4305168077e7048cb39e9/library/std/src/thread/mod.rs:481:17 [INFO] [stdout] 31: 0x55b7935ac288 - as core::ops::function::FnOnce<()>>::call_once::he930357ede3f4b4d [INFO] [stdout] at /rustc/e784c962ea252f0874a4305168077e7048cb39e9/library/core/src/panic/unwind_safe.rs:271:9 [INFO] [stdout] 32: 0x55b7935ac288 - std::panicking::try::do_call::h0de4b1dd08a9aa80 [INFO] [stdout] at /rustc/e784c962ea252f0874a4305168077e7048cb39e9/library/std/src/panicking.rs:403:40 [INFO] [stdout] 33: 0x55b7935ac288 - std::panicking::try::hf5b5c530df698d97 [INFO] [stdout] at /rustc/e784c962ea252f0874a4305168077e7048cb39e9/library/std/src/panicking.rs:367:19 [INFO] [stdout] 34: 0x55b7935ac288 - std::panic::catch_unwind::hed97078f17dbf191 [INFO] [stdout] at /rustc/e784c962ea252f0874a4305168077e7048cb39e9/library/std/src/panic.rs:129:14 [INFO] [stdout] 35: 0x55b7935ac288 - std::thread::Builder::spawn_unchecked::{{closure}}::h2e673950929cba93 [INFO] [stdout] at /rustc/e784c962ea252f0874a4305168077e7048cb39e9/library/std/src/thread/mod.rs:480:30 [INFO] [stdout] 36: 0x55b7935ac288 - core::ops::function::FnOnce::call_once{{vtable.shim}}::h8e18ddd18a52f010 [INFO] [stdout] at /rustc/e784c962ea252f0874a4305168077e7048cb39e9/library/core/src/ops/function.rs:227:5 [INFO] [stdout] 37: 0x55b7936081e3 - as core::ops::function::FnOnce>::call_once::hbbbb32ef11ea0ad2 [INFO] [stdout] at /rustc/e784c962ea252f0874a4305168077e7048cb39e9/library/alloc/src/boxed.rs:1636:9 [INFO] [stdout] 38: 0x55b7936081e3 - as core::ops::function::FnOnce>::call_once::h3b8ef23699fc5385 [INFO] [stdout] at /rustc/e784c962ea252f0874a4305168077e7048cb39e9/library/alloc/src/boxed.rs:1636:9 [INFO] [stdout] 39: 0x55b7936081e3 - std::sys::unix::thread::Thread::new::thread_start::ha57f5cba35f709b7 [INFO] [stdout] at /rustc/e784c962ea252f0874a4305168077e7048cb39e9/library/std/src/sys/unix/thread.rs:106:17 [INFO] [stdout] 40: 0x7f2163b93609 - start_thread [INFO] [stdout] 41: 0x7f2163e1e293 - clone [INFO] [stdout] 42: 0x0 - [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. 31 passed; 2 failed; 0 ignored; 0 measured; 0 filtered out; finished in 4.01s [INFO] [stdout] [INFO] running `Command { std: "docker" "inspect" "248621c86f9454f3343b9613a0797ca3198d949fcd4b60ab530fdd6e38d1410e", kill_on_drop: false }` [INFO] running `Command { std: "docker" "rm" "-f" "248621c86f9454f3343b9613a0797ca3198d949fcd4b60ab530fdd6e38d1410e", kill_on_drop: false }` [INFO] [stdout] 248621c86f9454f3343b9613a0797ca3198d949fcd4b60ab530fdd6e38d1410e