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[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/ohbyeongmin/100-exercises-to-learn-rust" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fohbyeongmin%2F100-exercises-to-learn-rust", kill_on_drop: false }`
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[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] b6a0ebb0b24f2452ad29448b71ab2ce2320fb0d2
[INFO] testing ohbyeongmin/100-exercises-to-learn-rust against 1.90.0 for beta-1.91-2
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fohbyeongmin%2F100-exercises-to-learn-rust" "/workspace/builds/worker-7-tc1/source", kill_on_drop: false }`
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[INFO] [stderr] done.
[INFO] started tweaking git repo https://github.com/ohbyeongmin/100-exercises-to-learn-rust
[INFO] finished tweaking git repo https://github.com/ohbyeongmin/100-exercises-to-learn-rust
[INFO] tweaked toml for git repo https://github.com/ohbyeongmin/100-exercises-to-learn-rust written to /workspace/builds/worker-7-tc1/source/Cargo.toml
[INFO] validating manifest of git repo https://github.com/ohbyeongmin/100-exercises-to-learn-rust on toolchain 1.90.0
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+1.90.0" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] crate git repo https://github.com/ohbyeongmin/100-exercises-to-learn-rust already has a lockfile, it will not be regenerated
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+1.90.0" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
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[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-tc1/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:e90291280db7d1fac5b66fc6dad9f9662629e7365a55743daf9bdf73ebc4ea79" "/opt/rustwide/cargo-home/bin/cargo" "+1.90.0" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
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[INFO] [stderr]    Compiling fastrand v2.1.0
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[INFO] [stderr]    Compiling chrono v0.4.38
[INFO] [stderr]    Compiling url v2.5.2
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[INFO] [stderr]    Compiling shlex v1.3.0
[INFO] [stderr]    Compiling pulldown-cmark v0.11.0
[INFO] [stderr]    Compiling topological-sort v0.2.2
[INFO] [stderr]    Compiling getopts v0.2.21
[INFO] [stderr]    Compiling pulldown-cmark-escape v0.11.0
[INFO] [stderr]    Compiling either v1.13.0
[INFO] [stderr]    Compiling packages v0.1.0 (/opt/rustwide/workdir/exercises/05_ticket_v2/10_packages)
[INFO] [stderr]    Compiling deps v0.1.0 (/opt/rustwide/workdir/exercises/05_ticket_v2/11_dependencies)
[INFO] [stderr]    Compiling deref v0.1.0 (/opt/rustwide/workdir/exercises/04_traits/07_deref)
[INFO] [stdout] warning: unused import: `anyhow::Error`
[INFO] [stdout]  --> exercises/05_ticket_v2/11_dependencies/src/lib.rs:6:5
[INFO] [stdout]   |
[INFO] [stdout] 6 | use anyhow::Error;
[INFO] [stdout]   |     ^^^^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]    Compiling orphan v0.1.0 (/opt/rustwide/workdir/exercises/04_traits/02_orphan_rule)
[INFO] [stderr]    Compiling sync v0.1.0 (/opt/rustwide/workdir/exercises/07_threads/14_sync)
[INFO] [stdout] warning: field `status` is never read
[INFO] [stdout]   --> exercises/04_traits/07_deref/src/lib.rs:10:5
[INFO] [stdout]    |
[INFO] [stdout]  7 | pub struct Ticket {
[INFO] [stdout]    |            ------ field in this struct
[INFO] [stdout] ...
[INFO] [stdout] 10 |     status: String,
[INFO] [stdout]    |     ^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]    Compiling arrays v0.1.0 (/opt/rustwide/workdir/exercises/06_ticket_management/01_arrays)
[INFO] [stdout] warning: function `outro` is never used
[INFO] [stdout]  --> exercises/07_threads/14_sync/src/lib.rs:2:4
[INFO] [stdout]   |
[INFO] [stdout] 2 | fn outro() -> &'static str {
[INFO] [stdout]   |    ^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]    Compiling threads v0.1.0 (/opt/rustwide/workdir/exercises/07_threads/01_threads)
[INFO] [stderr]    Compiling itertools v0.13.0
[INFO] [stderr]    Compiling derives v0.1.0 (/opt/rustwide/workdir/exercises/04_traits/04_derive)
[INFO] [stderr]    Compiling if_let v0.1.0 (/opt/rustwide/workdir/exercises/05_ticket_v2/04_if_let)
[INFO] [stdout] warning: enum `Shape` is never used
[INFO] [stdout]  --> exercises/05_ticket_v2/04_if_let/src/lib.rs:1:6
[INFO] [stdout]   |
[INFO] [stdout] 1 | enum Shape {
[INFO] [stdout]   |      ^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: method `radius` is never used
[INFO] [stdout]   --> exercises/05_ticket_v2/04_if_let/src/lib.rs:10:12
[INFO] [stdout]    |
[INFO] [stdout]  7 | impl Shape {
[INFO] [stdout]    | ---------- method in this implementation
[INFO] [stdout] ...
[INFO] [stdout] 10 |     pub fn radius(&self) -> f64 {
[INFO] [stdout]    |            ^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]    Compiling intro_03 v0.1.0 (/opt/rustwide/workdir/exercises/04_traits/00_intro)
[INFO] [stderr]    Compiling for_ v0.1.0 (/opt/rustwide/workdir/exercises/02_basic_calculator/07_for)
[INFO] [stdout] warning: struct `Ticket` is never constructed
[INFO] [stdout]   --> exercises/04_traits/04_derive/src/lib.rs:12:8
[INFO] [stdout]    |
[INFO] [stdout] 12 | struct Ticket {
[INFO] [stdout]    |        ^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `intro` is never used
[INFO] [stdout]  --> exercises/04_traits/00_intro/src/lib.rs:1:4
[INFO] [stdout]   |
[INFO] [stdout] 1 | fn intro() -> &'static str {
[INFO] [stdout]   |    ^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]    Compiling intro_05 v0.1.0 (/opt/rustwide/workdir/exercises/06_ticket_management/00_intro)
[INFO] [stderr]    Compiling intro_01 v0.1.0 (/opt/rustwide/workdir/exercises/02_basic_calculator/00_intro)
[INFO] [stderr]    Compiling slice v0.1.0 (/opt/rustwide/workdir/exercises/06_ticket_management/10_slices)
[INFO] [stderr]    Compiling error_enums v0.1.0 (/opt/rustwide/workdir/exercises/05_ticket_v2/08_error_enums)
[INFO] [stdout] warning: function `intro` is never used
[INFO] [stdout]  --> exercises/06_ticket_management/00_intro/src/lib.rs:1:4
[INFO] [stdout]   |
[INFO] [stdout] 1 | fn intro() -> &'static str {
[INFO] [stdout]   |    ^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]    Compiling welcome_00 v0.1.0 (/opt/rustwide/workdir/exercises/01_intro/00_welcome)
[INFO] [stderr]    Compiling as_cast v0.1.0 (/opt/rustwide/workdir/exercises/02_basic_calculator/10_as_casting)
[INFO] [stderr]    Compiling intro_08 v0.1.0 (/opt/rustwide/workdir/exercises/08_futures/00_intro)
[INFO] [stderr]    Compiling error_trait v0.1.0 (/opt/rustwide/workdir/exercises/05_ticket_v2/09_error_trait)
[INFO] [stderr]    Compiling if_else v0.1.0 (/opt/rustwide/workdir/exercises/02_basic_calculator/03_if_else)
[INFO] [stdout] warning: enum `TicketNewError` is never used
[INFO] [stdout]  --> exercises/05_ticket_v2/08_error_enums/src/lib.rs:5:6
[INFO] [stdout]   |
[INFO] [stdout] 5 | enum TicketNewError {
[INFO] [stdout]   |      ^^^^^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `easy_ticket` is never used
[INFO] [stdout]   --> exercises/05_ticket_v2/08_error_enums/src/lib.rs:14:4
[INFO] [stdout]    |
[INFO] [stdout] 14 | fn easy_ticket(title: String, description: String, status: Status) -> Ticket {
[INFO] [stdout]    |    ^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct `Ticket` is never constructed
[INFO] [stdout]   --> exercises/05_ticket_v2/08_error_enums/src/lib.rs:27:8
[INFO] [stdout]    |
[INFO] [stdout] 27 | struct Ticket {
[INFO] [stdout]    |        ^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: enum `Status` is never used
[INFO] [stdout]   --> exercises/05_ticket_v2/08_error_enums/src/lib.rs:34:6
[INFO] [stdout]    |
[INFO] [stdout] 34 | enum Status {
[INFO] [stdout]    |      ^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function `new` is never used
[INFO] [stdout]   --> exercises/05_ticket_v2/08_error_enums/src/lib.rs:41:12
[INFO] [stdout]    |
[INFO] [stdout] 40 | impl Ticket {
[INFO] [stdout]    | ----------- associated function in this implementation
[INFO] [stdout] 41 |     pub fn new(
[INFO] [stdout]    |            ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `intro` is never used
[INFO] [stdout]  --> exercises/08_futures/00_intro/src/lib.rs:1:4
[INFO] [stdout]   |
[INFO] [stdout] 1 | fn intro() -> &'static str {
[INFO] [stdout]   |    ^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]    Compiling outro_03 v0.1.0 (/opt/rustwide/workdir/exercises/04_traits/14_outro)
[INFO] [stderr]    Compiling variants_with_data v0.1.0 (/opt/rustwide/workdir/exercises/05_ticket_v2/03_variants_with_data)
[INFO] [stderr]    Compiling clone v0.1.0 (/opt/rustwide/workdir/exercises/04_traits/11_clone)
[INFO] [stdout] warning: unused import: `write`
[INFO] [stdout]  --> exercises/05_ticket_v2/09_error_trait/src/lib.rs:7:16
[INFO] [stdout]   |
[INFO] [stdout] 7 | use std::fmt::{write, Display};
[INFO] [stdout]   |                ^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]    Compiling panics v0.1.0 (/opt/rustwide/workdir/exercises/02_basic_calculator/04_panics)
[INFO] [stdout] warning: enum `TicketNewError` is never used
[INFO] [stdout]   --> exercises/05_ticket_v2/09_error_trait/src/lib.rs:10:6
[INFO] [stdout]    |
[INFO] [stdout] 10 | enum TicketNewError {
[INFO] [stdout]    |      ^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `easy_ticket` is never used
[INFO] [stdout]   --> exercises/05_ticket_v2/09_error_trait/src/lib.rs:30:4
[INFO] [stdout]    |
[INFO] [stdout] 30 | fn easy_ticket(title: String, description: String, status: Status) -> Ticket {
[INFO] [stdout]    |    ^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct `Ticket` is never constructed
[INFO] [stdout]   --> exercises/05_ticket_v2/09_error_trait/src/lib.rs:43:8
[INFO] [stdout]    |
[INFO] [stdout] 43 | struct Ticket {
[INFO] [stdout]    |        ^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: enum `Status` is never used
[INFO] [stdout]   --> exercises/05_ticket_v2/09_error_trait/src/lib.rs:50:6
[INFO] [stdout]    |
[INFO] [stdout] 50 | enum Status {
[INFO] [stdout]    |      ^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function `new` is never used
[INFO] [stdout]   --> exercises/05_ticket_v2/09_error_trait/src/lib.rs:57:12
[INFO] [stdout]    |
[INFO] [stdout] 56 | impl Ticket {
[INFO] [stdout]    | ----------- associated function in this implementation
[INFO] [stdout] 57 |     pub fn new(
[INFO] [stdout]    |            ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]    Compiling struct_ v0.1.0 (/opt/rustwide/workdir/exercises/03_ticket_v1/01_struct)
[INFO] [stderr]    Compiling leaking v0.1.0 (/opt/rustwide/workdir/exercises/07_threads/03_leak)
[INFO] [stderr]    Compiling assoc_vs_generic v0.1.0 (/opt/rustwide/workdir/exercises/04_traits/10_assoc_vs_generic)
[INFO] [stderr]    Compiling trait_ v0.1.0 (/opt/rustwide/workdir/exercises/04_traits/01_trait)
[INFO] [stderr]    Compiling overloading v0.1.0 (/opt/rustwide/workdir/exercises/04_traits/03_operator_overloading)
[INFO] [stdout] warning: struct `Ticket` is never constructed
[INFO] [stdout]  --> exercises/05_ticket_v2/03_variants_with_data/src/lib.rs:6:8
[INFO] [stdout]   |
[INFO] [stdout] 6 | struct Ticket {
[INFO] [stdout]   |        ^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: enum `Status` is never used
[INFO] [stdout]   --> exercises/05_ticket_v2/03_variants_with_data/src/lib.rs:13:6
[INFO] [stdout]    |
[INFO] [stdout] 13 | enum Status {
[INFO] [stdout]    |      ^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated items `new` and `assigned_to` are never used
[INFO] [stdout]   --> exercises/05_ticket_v2/03_variants_with_data/src/lib.rs:20:12
[INFO] [stdout]    |
[INFO] [stdout] 19 | impl Ticket {
[INFO] [stdout]    | ----------- associated items in this implementation
[INFO] [stdout] 20 |     pub fn new(title: String, description: String, status: Status) -> Ticket {
[INFO] [stdout]    |            ^^^
[INFO] [stdout] ...
[INFO] [stdout] 40 |     pub fn assigned_to(&self) -> &str {
[INFO] [stdout]    |            ^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]    Compiling ownership v0.1.0 (/opt/rustwide/workdir/exercises/03_ticket_v1/06_ownership)
[INFO] [stdout] warning: trait `Power` is never used
[INFO] [stdout]   --> exercises/04_traits/10_assoc_vs_generic/src/lib.rs:15:7
[INFO] [stdout]    |
[INFO] [stdout] 15 | trait Power<Rhs = Self> {
[INFO] [stdout]    |       ^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]    Compiling static v0.1.0 (/opt/rustwide/workdir/exercises/07_threads/02_static)
[INFO] [stdout] warning: trait `IsEven` is never used
[INFO] [stdout]  --> exercises/04_traits/01_trait/src/lib.rs:6:7
[INFO] [stdout]   |
[INFO] [stdout] 6 | trait IsEven {
[INFO] [stdout]   |       ^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]    Compiling factorial v0.1.0 (/opt/rustwide/workdir/exercises/02_basic_calculator/05_factorial)
[INFO] [stdout] warning: struct `Ticket` is never constructed
[INFO] [stdout]  --> exercises/04_traits/03_operator_overloading/src/lib.rs:3:8
[INFO] [stdout]   |
[INFO] [stdout] 3 | struct Ticket {
[INFO] [stdout]   |        ^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]    Compiling outro_02 v0.1.0 (/opt/rustwide/workdir/exercises/03_ticket_v1/12_outro)
[INFO] [stderr]    Compiling drop v0.1.0 (/opt/rustwide/workdir/exercises/04_traits/13_drop)
[INFO] [stderr]    Compiling validation v0.1.0 (/opt/rustwide/workdir/exercises/03_ticket_v1/02_validation)
[INFO] [stderr]    Compiling intro_04 v0.1.0 (/opt/rustwide/workdir/exercises/05_ticket_v2/00_intro)
[INFO] [stderr]    Compiling saturating v0.1.0 (/opt/rustwide/workdir/exercises/02_basic_calculator/09_saturating)
[INFO] [stdout] warning: function `intro` is never used
[INFO] [stdout]  --> exercises/05_ticket_v2/00_intro/src/lib.rs:1:4
[INFO] [stdout]   |
[INFO] [stdout] 1 | fn intro() -> &'static str {
[INFO] [stdout]   |    ^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]    Compiling intro_07 v0.1.0 (/opt/rustwide/workdir/exercises/07_threads/00_intro)
[INFO] [stdout] warning: struct `DropBomb` is never constructed
[INFO] [stdout]  --> exercises/04_traits/13_drop/src/lib.rs:5:8
[INFO] [stdout]   |
[INFO] [stdout] 5 | struct DropBomb {
[INFO] [stdout]   |        ^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated items `new` and `defuse` are never used
[INFO] [stdout]   --> exercises/04_traits/13_drop/src/lib.rs:10:8
[INFO] [stdout]    |
[INFO] [stdout]  9 | impl DropBomb {
[INFO] [stdout]    | ------------- associated items in this implementation
[INFO] [stdout] 10 |     fn new() -> Self {
[INFO] [stdout]    |        ^^^
[INFO] [stdout] ...
[INFO] [stdout] 14 |     fn defuse(&mut self) {
[INFO] [stdout]    |        ^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]    Compiling resizing v0.1.0 (/opt/rustwide/workdir/exercises/06_ticket_management/03_resizing)
[INFO] [stderr]    Compiling overflow v0.1.0 (/opt/rustwide/workdir/exercises/02_basic_calculator/08_overflow)
[INFO] [stdout] warning: function `intro` is never used
[INFO] [stdout]  --> exercises/07_threads/00_intro/src/lib.rs:1:4
[INFO] [stdout]   |
[INFO] [stdout] 1 | fn intro() -> &'static str {
[INFO] [stdout]   |    ^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]    Compiling integers v0.1.0 (/opt/rustwide/workdir/exercises/02_basic_calculator/01_integers)
[INFO] [stderr]    Compiling interior_mutability v0.1.0 (/opt/rustwide/workdir/exercises/07_threads/06_interior_mutability)
[INFO] [stderr]    Compiling sized v0.1.0 (/opt/rustwide/workdir/exercises/04_traits/08_sized)
[INFO] [stderr]    Compiling trait_bounds v0.1.0 (/opt/rustwide/workdir/exercises/04_traits/05_trait_bounds)
[INFO] [stderr]    Compiling encapsulation v0.1.0 (/opt/rustwide/workdir/exercises/03_ticket_v1/05_encapsulation)
[INFO] [stderr]    Compiling stack v0.1.0 (/opt/rustwide/workdir/exercises/03_ticket_v1/08_stack)
[INFO] [stderr]    Compiling mut_slice v0.1.0 (/opt/rustwide/workdir/exercises/06_ticket_management/11_mutable_slices)
[INFO] [stderr]    Compiling enum_ v0.1.0 (/opt/rustwide/workdir/exercises/05_ticket_v2/01_enum)
[INFO] [stdout] warning: field `value` is never read
[INFO] [stdout]  --> exercises/07_threads/06_interior_mutability/src/lib.rs:8:5
[INFO] [stdout]   |
[INFO] [stdout] 7 | pub struct DropTracker<T> {
[INFO] [stdout]   |            ----------- field in this struct
[INFO] [stdout] 8 |     value: T,
[INFO] [stdout]   |     ^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]    Compiling modules v0.1.0 (/opt/rustwide/workdir/exercises/03_ticket_v1/03_modules)
[INFO] [stderr]    Compiling unwrap v0.1.0 (/opt/rustwide/workdir/exercises/05_ticket_v2/07_unwrap)
[INFO] [stderr]    Compiling tryfrom v0.1.0 (/opt/rustwide/workdir/exercises/05_ticket_v2/13_try_from)
[INFO] [stderr]    Compiling nullability v0.1.0 (/opt/rustwide/workdir/exercises/05_ticket_v2/05_nullability)
[INFO] [stdout] warning: struct `Ticket` is never constructed
[INFO] [stdout]  --> exercises/05_ticket_v2/01_enum/src/lib.rs:7:8
[INFO] [stdout]   |
[INFO] [stdout] 7 | struct Ticket {
[INFO] [stdout]   |        ^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: enum `Status` is never used
[INFO] [stdout]   --> exercises/05_ticket_v2/01_enum/src/lib.rs:14:6
[INFO] [stdout]    |
[INFO] [stdout] 14 | enum Status {
[INFO] [stdout]    |      ^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated items `new`, `title`, `description`, and `status` are never used
[INFO] [stdout]   --> exercises/05_ticket_v2/01_enum/src/lib.rs:22:12
[INFO] [stdout]    |
[INFO] [stdout] 21 | impl Ticket {
[INFO] [stdout]    | ----------- associated items in this implementation
[INFO] [stdout] 22 |     pub fn new(title: String, description: String, status: Status) -> Ticket {
[INFO] [stdout]    |            ^^^
[INFO] [stdout] ...
[INFO] [stdout] 43 |     pub fn title(&self) -> &String {
[INFO] [stdout]    |            ^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 47 |     pub fn description(&self) -> &String {
[INFO] [stdout]    |            ^^^^^^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 51 |     pub fn status(&self) -> &Status {
[INFO] [stdout]    |            ^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]    Compiling bstr v1.10.0
[INFO] [stderr]    Compiling regex v1.10.6
[INFO] [stderr]    Compiling match_ v0.1.0 (/opt/rustwide/workdir/exercises/05_ticket_v2/02_match)
[INFO] [stdout] warning: function `easy_ticket` is never used
[INFO] [stdout]  --> exercises/05_ticket_v2/07_unwrap/src/lib.rs:4:4
[INFO] [stdout]   |
[INFO] [stdout] 4 | fn easy_ticket(title: String, description: String, status: Status) -> Ticket {
[INFO] [stdout]   |    ^^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct `Ticket` is never constructed
[INFO] [stdout]   --> exercises/05_ticket_v2/07_unwrap/src/lib.rs:19:8
[INFO] [stdout]    |
[INFO] [stdout] 19 | struct Ticket {
[INFO] [stdout]    |        ^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: enum `Status` is never used
[INFO] [stdout]   --> exercises/05_ticket_v2/07_unwrap/src/lib.rs:26:6
[INFO] [stdout]    |
[INFO] [stdout] 26 | enum Status {
[INFO] [stdout]    |      ^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function `new` is never used
[INFO] [stdout]   --> exercises/05_ticket_v2/07_unwrap/src/lib.rs:33:12
[INFO] [stdout]    |
[INFO] [stdout] 32 | impl Ticket {
[INFO] [stdout]    | ----------- associated function in this implementation
[INFO] [stdout] 33 |     pub fn new(title: String, description: String, status: Status) -> Result<Ticket, String> {
[INFO] [stdout]    |            ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct `Ticket` is never constructed
[INFO] [stdout]  --> exercises/05_ticket_v2/05_nullability/src/lib.rs:4:8
[INFO] [stdout]   |
[INFO] [stdout] 4 | struct Ticket {
[INFO] [stdout]   |        ^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: enum `Status` is never used
[INFO] [stdout]   --> exercises/05_ticket_v2/05_nullability/src/lib.rs:11:6
[INFO] [stdout]    |
[INFO] [stdout] 11 | enum Status {
[INFO] [stdout]    |      ^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated items `new` and `assigned_to` are never used
[INFO] [stdout]   --> exercises/05_ticket_v2/05_nullability/src/lib.rs:18:12
[INFO] [stdout]    |
[INFO] [stdout] 17 | impl Ticket {
[INFO] [stdout]    | ----------- associated items in this implementation
[INFO] [stdout] 18 |     pub fn new(title: String, description: String, status: Status) -> Ticket {
[INFO] [stdout]    |            ^^^
[INFO] [stdout] ...
[INFO] [stdout] 38 |     pub fn assigned_to(&self) -> Option<&String> {
[INFO] [stdout]    |            ^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]    Compiling terminal_size v0.3.0
[INFO] [stderr]    Compiling tempfile v3.11.0
[INFO] [stdout] warning: enum `Shape` is never used
[INFO] [stdout]  --> exercises/05_ticket_v2/02_match/src/lib.rs:1:6
[INFO] [stdout]   |
[INFO] [stdout] 1 | enum Shape {
[INFO] [stdout]   |      ^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: method `n_sides` is never used
[INFO] [stdout]   --> exercises/05_ticket_v2/02_match/src/lib.rs:11:12
[INFO] [stdout]    |
[INFO] [stdout]  9 | impl Shape {
[INFO] [stdout]    | ---------- method in this implementation
[INFO] [stdout] 10 |     // TODO: Implement the `n_sides` method using a `match`.
[INFO] [stdout] 11 |     pub fn n_sides(&self) -> u8 {
[INFO] [stdout]    |            ^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: enum `Status` is never used
[INFO] [stdout]  --> exercises/05_ticket_v2/13_try_from/src/lib.rs:5:6
[INFO] [stdout]   |
[INFO] [stdout] 5 | enum Status {
[INFO] [stdout]   |      ^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]    Compiling str_slice v0.1.0 (/opt/rustwide/workdir/exercises/04_traits/06_str_slice)
[INFO] [stderr]    Compiling clap_builder v4.5.13
[INFO] [stderr]    Compiling pulldown-cmark-to-cmark v15.0.1
[INFO] [stderr]    Compiling variables v0.1.0 (/opt/rustwide/workdir/exercises/02_basic_calculator/02_variables)
[INFO] [stderr]    Compiling intro_02 v0.1.0 (/opt/rustwide/workdir/exercises/03_ticket_v1/00_intro)
[INFO] [stderr]    Compiling fallibility v0.1.0 (/opt/rustwide/workdir/exercises/05_ticket_v2/06_fallibility)
[INFO] [stderr]    Compiling syntax v0.1.0 (/opt/rustwide/workdir/exercises/01_intro/01_syntax)
[INFO] [stdout] warning: struct `Ticket` is never constructed
[INFO] [stdout]  --> exercises/05_ticket_v2/06_fallibility/src/lib.rs:5:8
[INFO] [stdout]   |
[INFO] [stdout] 5 | struct Ticket {
[INFO] [stdout]   |        ^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: enum `Status` is never used
[INFO] [stdout]   --> exercises/05_ticket_v2/06_fallibility/src/lib.rs:12:6
[INFO] [stdout]    |
[INFO] [stdout] 12 | enum Status {
[INFO] [stdout]    |      ^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function `new` is never used
[INFO] [stdout]   --> exercises/05_ticket_v2/06_fallibility/src/lib.rs:19:12
[INFO] [stdout]    |
[INFO] [stdout] 18 | impl Ticket {
[INFO] [stdout]    | ----------- associated function in this implementation
[INFO] [stdout] 19 |     pub fn new(title: String, description: String, status: Status) -> Result<Ticket, String> {
[INFO] [stdout]    |            ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]    Compiling globset v0.4.14
[INFO] [stderr]    Compiling env_filter v0.1.2
[INFO] [stderr]    Compiling opener v0.7.1
[INFO] [stderr]    Compiling from v0.1.0 (/opt/rustwide/workdir/exercises/04_traits/09_from)
[INFO] [stdout] warning: unused variable: `wrapping`
[INFO] [stdout]   --> exercises/04_traits/09_from/src/lib.rs:14:9
[INFO] [stdout]    |
[INFO] [stdout] 14 |     let wrapping: WrappingU32 = 42.into();
[INFO] [stdout]    |         ^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_wrapping`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_variables)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `wrapping`
[INFO] [stdout]   --> exercises/04_traits/09_from/src/lib.rs:15:9
[INFO] [stdout]    |
[INFO] [stdout] 15 |     let wrapping = WrappingU32::from(42);
[INFO] [stdout]    |         ^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_wrapping`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field `value` is never read
[INFO] [stdout]  --> exercises/04_traits/09_from/src/lib.rs:4:5
[INFO] [stdout]   |
[INFO] [stdout] 3 | pub struct WrappingU32 {
[INFO] [stdout]   |            ----------- field in this struct
[INFO] [stdout] 4 |     value: u32,
[INFO] [stdout]   |     ^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `example` is never used
[INFO] [stdout]   --> exercises/04_traits/09_from/src/lib.rs:13:4
[INFO] [stdout]    |
[INFO] [stdout] 13 | fn example() {
[INFO] [stdout]    |    ^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]    Compiling setters v0.1.0 (/opt/rustwide/workdir/exercises/03_ticket_v1/07_setters)
[INFO] [stderr]    Compiling visibility v0.1.0 (/opt/rustwide/workdir/exercises/03_ticket_v1/04_visibility)
[INFO] [stderr]    Compiling scoped_threads v0.1.0 (/opt/rustwide/workdir/exercises/07_threads/04_scoped_threads)
[INFO] [stderr]    Compiling env_logger v0.11.5
[INFO] [stderr]    Compiling destructor v0.1.0 (/opt/rustwide/workdir/exercises/03_ticket_v1/11_destructor)
[INFO] [stdout] warning: struct `Ticket` is never constructed
[INFO] [stdout]  --> exercises/03_ticket_v1/04_visibility/src/lib.rs:2:16
[INFO] [stdout]   |
[INFO] [stdout] 2 |     pub struct Ticket {
[INFO] [stdout]   |                ^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function `new` is never used
[INFO] [stdout]  --> exercises/03_ticket_v1/04_visibility/src/lib.rs:9:16
[INFO] [stdout]   |
[INFO] [stdout] 8 |     impl Ticket {
[INFO] [stdout]   |     ----------- associated function in this implementation
[INFO] [stdout] 9 |         pub fn new(title: String, description: String, status: String) -> Ticket {
[INFO] [stdout]   |                ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]    Compiling heap v0.1.0 (/opt/rustwide/workdir/exercises/03_ticket_v1/09_heap)
[INFO] [stderr]    Compiling references_in_memory v0.1.0 (/opt/rustwide/workdir/exercises/03_ticket_v1/10_references_in_memory)
[INFO] [stdout] warning: fields `title`, `description`, and `status` are never read
[INFO] [stdout]  --> exercises/03_ticket_v1/09_heap/src/lib.rs:2:5
[INFO] [stdout]   |
[INFO] [stdout] 1 | pub struct Ticket {
[INFO] [stdout]   |            ------ fields in this struct
[INFO] [stdout] 2 |     title: String,
[INFO] [stdout]   |     ^^^^^
[INFO] [stdout] 3 |     description: String,
[INFO] [stdout]   |     ^^^^^^^^^^^
[INFO] [stdout] 4 |     status: String,
[INFO] [stdout]   |     ^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]    Compiling while_ v0.1.0 (/opt/rustwide/workdir/exercises/02_basic_calculator/06_while)
[INFO] [stdout] warning: fields `title`, `description`, and `status` are never read
[INFO] [stdout]  --> exercises/03_ticket_v1/10_references_in_memory/src/lib.rs:2:5
[INFO] [stdout]   |
[INFO] [stdout] 1 | pub struct Ticket {
[INFO] [stdout]   |            ------ fields in this struct
[INFO] [stdout] 2 |     title: String,
[INFO] [stdout]   |     ^^^^^
[INFO] [stdout] 3 |     description: String,
[INFO] [stdout]   |     ^^^^^^^^^^^
[INFO] [stdout] 4 |     status: String,
[INFO] [stdout]   |     ^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]    Compiling vec v0.1.0 (/opt/rustwide/workdir/exercises/06_ticket_management/02_vec)
[INFO] [stderr]    Compiling copy v0.1.0 (/opt/rustwide/workdir/exercises/04_traits/12_copy)
[INFO] [stderr]    Compiling ignore v0.4.22
[INFO] [stdout] warning: function `outro` is never used
[INFO] [stdout]  --> exercises/03_ticket_v1/11_destructor/src/lib.rs:4:4
[INFO] [stdout]   |
[INFO] [stdout] 4 | fn outro() -> &'static str {
[INFO] [stdout]   |    ^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]    Compiling thiserror-impl v1.0.63
[INFO] [stderr]    Compiling zerocopy-derive v0.7.35
[INFO] [stderr]    Compiling tokio-macros v2.4.0
[INFO] [stderr]    Compiling serde_derive v1.0.204
[INFO] [stderr]    Compiling futures-macro v0.3.30
[INFO] [stderr]    Compiling html5ever v0.27.0
[INFO] [stderr]    Compiling pin-project-internal v1.1.5
[INFO] [stderr]    Compiling clap_derive v4.5.13
[INFO] [stderr]    Compiling thiserror-impl v2.0.12
[INFO] [stderr]    Compiling tokio v1.39.2
[INFO] [stderr]    Compiling futures-util v0.3.30
[INFO] [stderr]    Compiling zerocopy v0.7.35
[INFO] [stderr]    Compiling thiserror v2.0.12
[INFO] [stderr]    Compiling ticket_fields v0.1.0 (/opt/rustwide/workdir/helpers/ticket_fields)
[INFO] [stderr]    Compiling pest v2.7.11
[INFO] [stderr]    Compiling source v0.1.0 (/opt/rustwide/workdir/exercises/05_ticket_v2/14_source)
[INFO] [stderr]    Compiling pin-project v1.1.5
[INFO] [stderr]    Compiling thiserror_ v0.1.0 (/opt/rustwide/workdir/exercises/05_ticket_v2/12_thiserror)
[INFO] [stderr]    Compiling outro_04 v0.1.0 (/opt/rustwide/workdir/exercises/05_ticket_v2/15_outro)
[INFO] [stderr]    Compiling iterators v0.1.0 (/opt/rustwide/workdir/exercises/06_ticket_management/04_iterators)
[INFO] [stderr]    Compiling iter v0.1.0 (/opt/rustwide/workdir/exercises/06_ticket_management/05_iter)
[INFO] [stderr]    Compiling rwlock v0.1.0 (/opt/rustwide/workdir/exercises/07_threads/12_rw_lock)
[INFO] [stdout] warning: unused import: `TrySendError`
[INFO] [stdout]  --> exercises/07_threads/12_rw_lock/src/lib.rs:3:59
[INFO] [stdout]   |
[INFO] [stdout] 3 | use std::sync::mpsc::{sync_channel, Receiver, SyncSender, TrySendError};
[INFO] [stdout]   |                                                           ^^^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]    Compiling btreemap v0.1.0 (/opt/rustwide/workdir/exercises/06_ticket_management/16_btreemap)
[INFO] [stdout] warning: unused import: `Mutex`
[INFO] [stdout]  --> exercises/07_threads/12_rw_lock/src/lib.rs:4:22
[INFO] [stdout]   |
[INFO] [stdout] 4 | use std::sync::{Arc, Mutex, RwLock};
[INFO] [stdout]   |                      ^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]    Compiling without_channels v0.1.0 (/opt/rustwide/workdir/exercises/07_threads/13_without_channels)
[INFO] [stdout] warning: enum `TicketNewError` is never used
[INFO] [stdout]  --> exercises/05_ticket_v2/12_thiserror/src/lib.rs:8:6
[INFO] [stdout]   |
[INFO] [stdout] 8 | enum TicketNewError {
[INFO] [stdout]   |      ^^^^^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: type `Command` is more private than the item `server`
[INFO] [stdout]   --> exercises/07_threads/12_rw_lock/src/lib.rs:62:1
[INFO] [stdout]    |
[INFO] [stdout] 62 | pub fn server(receiver: Receiver<Command>) {
[INFO] [stdout]    | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ function `server` is reachable at visibility `pub`
[INFO] [stdout]    |
[INFO] [stdout] note: but type `Command` is only usable at visibility `pub(crate)`
[INFO] [stdout]   --> exercises/07_threads/12_rw_lock/src/lib.rs:51:1
[INFO] [stdout]    |
[INFO] [stdout] 51 | enum Command {
[INFO] [stdout]    | ^^^^^^^^^^^^
[INFO] [stdout]    = note: `#[warn(private_interfaces)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct `Ticket` is never constructed
[INFO] [stdout]   --> exercises/05_ticket_v2/12_thiserror/src/lib.rs:20:8
[INFO] [stdout]    |
[INFO] [stdout] 20 | struct Ticket {
[INFO] [stdout]    |        ^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: enum `Status` is never used
[INFO] [stdout]   --> exercises/05_ticket_v2/12_thiserror/src/lib.rs:27:6
[INFO] [stdout]    |
[INFO] [stdout] 27 | enum Status {
[INFO] [stdout]    |      ^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function `new` is never used
[INFO] [stdout]   --> exercises/05_ticket_v2/12_thiserror/src/lib.rs:34:12
[INFO] [stdout]    |
[INFO] [stdout] 33 | impl Ticket {
[INFO] [stdout]    | ----------- associated function in this implementation
[INFO] [stdout] 34 |     pub fn new(
[INFO] [stdout]    |            ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]    Compiling index_mut v0.1.0 (/opt/rustwide/workdir/exercises/06_ticket_management/14_index_mut)
[INFO] [stderr]    Compiling patch v0.1.0 (/opt/rustwide/workdir/exercises/07_threads/10_patch)
[INFO] [stderr]    Compiling lifetime v0.1.0 (/opt/rustwide/workdir/exercises/06_ticket_management/06_lifetimes)
[INFO] [stdout] warning: hiding a lifetime that's elided elsewhere is confusing
[INFO] [stdout]   --> exercises/06_ticket_management/05_iter/src/lib.rs:38:17
[INFO] [stdout]    |
[INFO] [stdout] 38 |     pub fn iter(&self) -> std::slice::Iter<Ticket> {
[INFO] [stdout]    |                 ^^^^^     ------------------------ the same lifetime is hidden here
[INFO] [stdout]    |                 |
[INFO] [stdout]    |                 the lifetime is elided here
[INFO] [stdout]    |
[INFO] [stdout]    = help: the same lifetime is referred to in inconsistent ways, making the signature confusing
[INFO] [stdout]    = note: `#[warn(mismatched_lifetime_syntaxes)]` on by default
[INFO] [stdout] help: use `'_` for type paths
[INFO] [stdout]    |
[INFO] [stdout] 38 |     pub fn iter(&self) -> std::slice::Iter<'_, Ticket> {
[INFO] [stdout]    |                                            +++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]    Compiling impl_trait v0.1.0 (/opt/rustwide/workdir/exercises/06_ticket_management/08_impl_trait)
[INFO] [stdout] warning: hiding a lifetime that's elided elsewhere is confusing
[INFO] [stdout]   --> exercises/06_ticket_management/06_lifetimes/src/lib.rs:44:17
[INFO] [stdout]    |
[INFO] [stdout] 44 |     pub fn iter(&self) -> std::slice::Iter<Ticket> {
[INFO] [stdout]    |                 ^^^^^     ------------------------ the same lifetime is hidden here
[INFO] [stdout]    |                 |
[INFO] [stdout]    |                 the lifetime is elided here
[INFO] [stdout]    |
[INFO] [stdout]    = help: the same lifetime is referred to in inconsistent ways, making the signature confusing
[INFO] [stdout]    = note: `#[warn(mismatched_lifetime_syntaxes)]` on by default
[INFO] [stdout] help: use `'_` for type paths
[INFO] [stdout]    |
[INFO] [stdout] 44 |     pub fn iter(&self) -> std::slice::Iter<'_, Ticket> {
[INFO] [stdout]    |                                            +++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]    Compiling two_states v0.1.0 (/opt/rustwide/workdir/exercises/06_ticket_management/12_two_states)
[INFO] [stderr]    Compiling channels v0.1.0 (/opt/rustwide/workdir/exercises/07_threads/05_channels)
[INFO] [stderr]    Compiling client v0.1.0 (/opt/rustwide/workdir/exercises/07_threads/08_client)
[INFO] [stderr]    Compiling index v0.1.0 (/opt/rustwide/workdir/exercises/06_ticket_management/13_index)
[INFO] [stdout] warning: type `Command` is more private than the item `server`
[INFO] [stdout]   --> exercises/07_threads/10_patch/src/lib.rs:75:1
[INFO] [stdout]    |
[INFO] [stdout] 75 | pub fn server(receiver: Receiver<Command>) {
[INFO] [stdout]    | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ function `server` is reachable at visibility `pub`
[INFO] [stdout]    |
[INFO] [stdout] note: but type `Command` is only usable at visibility `pub(crate)`
[INFO] [stdout]   --> exercises/07_threads/10_patch/src/lib.rs:60:1
[INFO] [stdout]    |
[INFO] [stdout] 60 | enum Command {
[INFO] [stdout]    | ^^^^^^^^^^^^
[INFO] [stdout]    = note: `#[warn(private_interfaces)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]    Compiling response v0.1.0 (/opt/rustwide/workdir/exercises/07_threads/07_ack)
[INFO] [stderr]    Compiling bounded v0.1.0 (/opt/rustwide/workdir/exercises/07_threads/09_bounded)
[INFO] [stdout] warning: type `Command` is more private than the item `TicketStoreClient::new`
[INFO] [stdout]   --> exercises/07_threads/08_client/src/lib.rs:14:5
[INFO] [stdout]    |
[INFO] [stdout] 14 |     pub fn new(sender: Sender<Command>) -> Self {
[INFO] [stdout]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ associated function `TicketStoreClient::new` is reachable at visibility `pub`
[INFO] [stdout]    |
[INFO] [stdout] note: but type `Command` is only usable at visibility `pub(crate)`
[INFO] [stdout]   --> exercises/07_threads/08_client/src/lib.rs:54:1
[INFO] [stdout]    |
[INFO] [stdout] 54 | enum Command {
[INFO] [stdout]    | ^^^^^^^^^^^^
[INFO] [stdout]    = note: `#[warn(private_interfaces)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]    Compiling combinators v0.1.0 (/opt/rustwide/workdir/exercises/06_ticket_management/07_combinators)
[INFO] [stderr]    Compiling ppv-lite86 v0.2.20
[INFO] [stderr]    Compiling hashmap v0.1.0 (/opt/rustwide/workdir/exercises/06_ticket_management/15_hashmap)
[INFO] [stdout] warning: unused imports: `RecvError`, `SendError`, and `Sender`
[INFO] [stdout]  --> exercises/07_threads/09_bounded/src/lib.rs:4:39
[INFO] [stdout]   |
[INFO] [stdout] 4 | use std::sync::mpsc::{self, Receiver, RecvError, SendError, Sender, SyncSender};
[INFO] [stdout]   |                                       ^^^^^^^^^  ^^^^^^^^^  ^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]    Compiling impl_trait_2 v0.1.0 (/opt/rustwide/workdir/exercises/06_ticket_management/09_impl_trait_2)
[INFO] [stderr]    Compiling locks v0.1.0 (/opt/rustwide/workdir/exercises/07_threads/11_locks)
[INFO] [stdout] warning: unused import: `TrySendError`
[INFO] [stdout]  --> exercises/07_threads/11_locks/src/lib.rs:4:59
[INFO] [stdout]   |
[INFO] [stdout] 4 | use std::sync::mpsc::{sync_channel, Receiver, SyncSender, TrySendError};
[INFO] [stdout]   |                                                           ^^^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: type `Command` is more private than the item `server`
[INFO] [stdout]   --> exercises/07_threads/11_locks/src/lib.rs:63:1
[INFO] [stdout]    |
[INFO] [stdout] 63 | pub fn server(receiver: Receiver<Command>) {
[INFO] [stdout]    | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ function `server` is reachable at visibility `pub`
[INFO] [stdout]    |
[INFO] [stdout] note: but type `Command` is only usable at visibility `pub(crate)`
[INFO] [stdout]   --> exercises/07_threads/11_locks/src/lib.rs:52:1
[INFO] [stdout]    |
[INFO] [stdout] 52 | enum Command {
[INFO] [stdout]    | ^^^^^^^^^^^^
[INFO] [stdout]    = note: `#[warn(private_interfaces)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]    Compiling rand_chacha v0.3.1
[INFO] [stderr]    Compiling clap v4.5.13
[INFO] [stderr]    Compiling rand v0.8.5
[INFO] [stderr]    Compiling clap_complete v4.5.12
[INFO] [stderr]    Compiling pest_meta v2.7.11
[INFO] [stderr]    Compiling tungstenite v0.21.0
[INFO] [stderr]    Compiling phf_generator v0.11.2
[INFO] [stderr]    Compiling phf_generator v0.10.0
[INFO] [stderr]    Compiling string_cache_codegen v0.5.2
[INFO] [stderr]    Compiling phf_codegen v0.11.2
[INFO] [stderr]    Compiling pest_generator v2.7.11
[INFO] [stderr]    Compiling markup5ever v0.12.1
[INFO] [stderr]    Compiling pest_derive v2.7.11
[INFO] [stderr]    Compiling string_cache v0.8.7
[INFO] [stderr]    Compiling serde_urlencoded v0.7.1
[INFO] [stderr]    Compiling toml v0.5.11
[INFO] [stderr]    Compiling bimap v0.6.3
[INFO] [stderr]    Compiling elasticlunr-rs v3.0.2
[INFO] [stderr]    Compiling handlebars v5.1.2
[INFO] [stderr]    Compiling tokio-util v0.7.11
[INFO] [stderr]    Compiling tokio-tungstenite v0.21.0
[INFO] [stderr]    Compiling outro_08 v0.1.0 (/opt/rustwide/workdir/exercises/08_futures/08_outro)
[INFO] [stderr]    Compiling spawn v0.1.0 (/opt/rustwide/workdir/exercises/08_futures/02_spawn)
[INFO] [stderr]    Compiling async_locks v0.1.0 (/opt/rustwide/workdir/exercises/08_futures/06_async_aware_primitives)
[INFO] [stderr]    Compiling blocking v0.1.0 (/opt/rustwide/workdir/exercises/08_futures/05_blocking)
[INFO] [stderr]    Compiling future v0.1.0 (/opt/rustwide/workdir/exercises/08_futures/04_future)
[INFO] [stderr]    Compiling cancellation v0.1.0 (/opt/rustwide/workdir/exercises/08_futures/07_cancellation)
[INFO] [stderr]    Compiling async_fn v0.1.0 (/opt/rustwide/workdir/exercises/08_futures/01_async_fn)
[INFO] [stderr]    Compiling runtime v0.1.0 (/opt/rustwide/workdir/exercises/08_futures/03_runtime)
[INFO] [stdout] warning: function `spawner` is never used
[INFO] [stdout]  --> exercises/08_futures/04_future/src/lib.rs:8:4
[INFO] [stdout]   |
[INFO] [stdout] 8 | fn spawner() {
[INFO] [stdout]   |    ^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `example` is never used
[INFO] [stdout]   --> exercises/08_futures/04_future/src/lib.rs:12:10
[INFO] [stdout]    |
[INFO] [stdout] 12 | async fn example() {
[INFO] [stdout]    |          ^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused `Result` in tuple element 0 that must be used
[INFO] [stdout]   --> exercises/08_futures/03_runtime/src/lib.rs:18:5
[INFO] [stdout]    |
[INFO] [stdout] 18 |     tokio::join!(handle1, handle2);
[INFO] [stdout]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stdout]    = note: `#[warn(unused_must_use)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused `Result` in tuple element 1 that must be used
[INFO] [stdout]   --> exercises/08_futures/03_runtime/src/lib.rs:18:5
[INFO] [stdout]    |
[INFO] [stdout] 18 |     tokio::join!(handle1, handle2);
[INFO] [stdout]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]    Compiling ammonia v4.0.0
[INFO] [stderr]    Compiling h2 v0.3.26
[INFO] [stderr]    Compiling hyper v0.14.30
[INFO] [stderr]    Compiling warp v0.3.7
[INFO] [stderr]    Compiling mdbook v0.4.40
[INFO] [stderr]    Compiling mdbook-link-shortener v0.1.0 (/opt/rustwide/workdir/helpers/mdbook-link-shortener)
[INFO] [stderr]    Compiling mdbook-exercise-linker v0.1.0 (/opt/rustwide/workdir/helpers/mdbook-exercise-linker)
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 1m 23s
[INFO] running `Command { std: "docker" "inspect" "1b58c748004ff8212767dc1f6be9f008b2aa5fe0fa910a18b3a2819e3198affe", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "1b58c748004ff8212767dc1f6be9f008b2aa5fe0fa910a18b3a2819e3198affe", kill_on_drop: false }`
[INFO] [stdout] 1b58c748004ff8212767dc1f6be9f008b2aa5fe0fa910a18b3a2819e3198affe
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-tc1/source:/opt/rustwide/workdir:ro,Z" "-v" "/var/lib/crater-agent-workspace/cargo-home:/opt/rustwide/cargo-home:ro,Z" "-v" "/var/lib/crater-agent-workspace/rustup-home:/opt/rustwide/rustup-home:ro,Z" "-e" "SOURCE_DIR=/opt/rustwide/workdir" "-e" "CARGO_TARGET_DIR=/opt/rustwide/target" "-e" "CARGO_INCREMENTAL=0" "-e" "RUST_BACKTRACE=full" "-e" "RUSTFLAGS=--cap-lints=warn" "-e" "RUSTDOCFLAGS=--cap-lints=warn" "-e" "CARGO_HOME=/opt/rustwide/cargo-home" "-e" "RUSTUP_HOME=/opt/rustwide/rustup-home" "-w" "/opt/rustwide/workdir" "-m" "1610612736" "--user" "0:0" "--network" "none" "ghcr.io/rust-lang/crates-build-env/linux@sha256:e90291280db7d1fac5b66fc6dad9f9662629e7365a55743daf9bdf73ebc4ea79" "/opt/rustwide/cargo-home/bin/cargo" "+1.90.0" "test" "--frozen" "--no-run" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 1485a200308d77ed4bd443043a0ce8ee4d2fad1ee6f746bfd856bb44c422b541
[INFO] running `Command { std: "docker" "start" "-a" "1485a200308d77ed4bd443043a0ce8ee4d2fad1ee6f746bfd856bb44c422b541", kill_on_drop: false }`
[INFO] [stdout] warning: unused imports: `RecvError`, `SendError`, and `Sender`
[INFO] [stdout]  --> exercises/07_threads/09_bounded/src/lib.rs:4:39
[INFO] [stdout]   |
[INFO] [stdout] 4 | use std::sync::mpsc::{self, Receiver, RecvError, SendError, Sender, SyncSender};
[INFO] [stdout]   |                                       ^^^^^^^^^  ^^^^^^^^^  ^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: type `Command` is more private than the item `TicketStoreClient::new`
[INFO] [stdout]   --> exercises/07_threads/08_client/src/lib.rs:14:5
[INFO] [stdout]    |
[INFO] [stdout] 14 |     pub fn new(sender: Sender<Command>) -> Self {
[INFO] [stdout]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ associated function `TicketStoreClient::new` is reachable at visibility `pub`
[INFO] [stdout]    |
[INFO] [stdout] note: but type `Command` is only usable at visibility `pub(crate)`
[INFO] [stdout]   --> exercises/07_threads/08_client/src/lib.rs:54:1
[INFO] [stdout]    |
[INFO] [stdout] 54 | enum Command {
[INFO] [stdout]    | ^^^^^^^^^^^^
[INFO] [stdout]    = note: `#[warn(private_interfaces)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: type `Command` is more private than the item `server`
[INFO] [stdout]   --> exercises/07_threads/10_patch/src/lib.rs:75:1
[INFO] [stdout]    |
[INFO] [stdout] 75 | pub fn server(receiver: Receiver<Command>) {
[INFO] [stdout]    | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ function `server` is reachable at visibility `pub`
[INFO] [stdout]    |
[INFO] [stdout] note: but type `Command` is only usable at visibility `pub(crate)`
[INFO] [stdout]   --> exercises/07_threads/10_patch/src/lib.rs:60:1
[INFO] [stdout]    |
[INFO] [stdout] 60 | enum Command {
[INFO] [stdout]    | ^^^^^^^^^^^^
[INFO] [stdout]    = note: `#[warn(private_interfaces)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `TrySendError`
[INFO] [stdout]  --> exercises/07_threads/12_rw_lock/src/lib.rs:3:59
[INFO] [stdout]   |
[INFO] [stdout] 3 | use std::sync::mpsc::{sync_channel, Receiver, SyncSender, TrySendError};
[INFO] [stdout]   |                                                           ^^^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `Mutex`
[INFO] [stdout]  --> exercises/07_threads/12_rw_lock/src/lib.rs:4:22
[INFO] [stdout]   |
[INFO] [stdout] 4 | use std::sync::{Arc, Mutex, RwLock};
[INFO] [stdout]   |                      ^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: type `Command` is more private than the item `server`
[INFO] [stdout]   --> exercises/07_threads/12_rw_lock/src/lib.rs:62:1
[INFO] [stdout]    |
[INFO] [stdout] 62 | pub fn server(receiver: Receiver<Command>) {
[INFO] [stdout]    | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ function `server` is reachable at visibility `pub`
[INFO] [stdout]    |
[INFO] [stdout] note: but type `Command` is only usable at visibility `pub(crate)`
[INFO] [stdout]   --> exercises/07_threads/12_rw_lock/src/lib.rs:51:1
[INFO] [stdout]    |
[INFO] [stdout] 51 | enum Command {
[INFO] [stdout]    | ^^^^^^^^^^^^
[INFO] [stdout]    = note: `#[warn(private_interfaces)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `TrySendError`
[INFO] [stdout]  --> exercises/07_threads/11_locks/src/lib.rs:4:59
[INFO] [stdout]   |
[INFO] [stdout] 4 | use std::sync::mpsc::{sync_channel, Receiver, SyncSender, TrySendError};
[INFO] [stdout]   |                                                           ^^^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: type `Command` is more private than the item `server`
[INFO] [stdout]   --> exercises/07_threads/11_locks/src/lib.rs:63:1
[INFO] [stdout]    |
[INFO] [stdout] 63 | pub fn server(receiver: Receiver<Command>) {
[INFO] [stdout]    | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ function `server` is reachable at visibility `pub`
[INFO] [stdout]    |
[INFO] [stdout] note: but type `Command` is only usable at visibility `pub(crate)`
[INFO] [stdout]   --> exercises/07_threads/11_locks/src/lib.rs:52:1
[INFO] [stdout]    |
[INFO] [stdout] 52 | enum Command {
[INFO] [stdout]    | ^^^^^^^^^^^^
[INFO] [stdout]    = note: `#[warn(private_interfaces)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: enum `TicketNewError` is never used
[INFO] [stdout]  --> exercises/05_ticket_v2/12_thiserror/src/lib.rs:8:6
[INFO] [stdout]   |
[INFO] [stdout] 8 | enum TicketNewError {
[INFO] [stdout]   |      ^^^^^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct `Ticket` is never constructed
[INFO] [stdout]   --> exercises/05_ticket_v2/12_thiserror/src/lib.rs:20:8
[INFO] [stdout]    |
[INFO] [stdout] 20 | struct Ticket {
[INFO] [stdout]    |        ^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: enum `Status` is never used
[INFO] [stdout]   --> exercises/05_ticket_v2/12_thiserror/src/lib.rs:27:6
[INFO] [stdout]    |
[INFO] [stdout] 27 | enum Status {
[INFO] [stdout]    |      ^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function `new` is never used
[INFO] [stdout]   --> exercises/05_ticket_v2/12_thiserror/src/lib.rs:34:12
[INFO] [stdout]    |
[INFO] [stdout] 33 | impl Ticket {
[INFO] [stdout]    | ----------- associated function in this implementation
[INFO] [stdout] 34 |     pub fn new(
[INFO] [stdout]    |            ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: hiding a lifetime that's elided elsewhere is confusing
[INFO] [stdout]   --> exercises/06_ticket_management/05_iter/src/lib.rs:38:17
[INFO] [stdout]    |
[INFO] [stdout] 38 |     pub fn iter(&self) -> std::slice::Iter<Ticket> {
[INFO] [stdout]    |                 ^^^^^     ------------------------ the same lifetime is hidden here
[INFO] [stdout]    |                 |
[INFO] [stdout]    |                 the lifetime is elided here
[INFO] [stdout]    |
[INFO] [stdout]    = help: the same lifetime is referred to in inconsistent ways, making the signature confusing
[INFO] [stdout]    = note: `#[warn(mismatched_lifetime_syntaxes)]` on by default
[INFO] [stdout] help: use `'_` for type paths
[INFO] [stdout]    |
[INFO] [stdout] 38 |     pub fn iter(&self) -> std::slice::Iter<'_, Ticket> {
[INFO] [stdout]    |                                            +++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: hiding a lifetime that's elided elsewhere is confusing
[INFO] [stdout]   --> exercises/06_ticket_management/06_lifetimes/src/lib.rs:44:17
[INFO] [stdout]    |
[INFO] [stdout] 44 |     pub fn iter(&self) -> std::slice::Iter<Ticket> {
[INFO] [stdout]    |                 ^^^^^     ------------------------ the same lifetime is hidden here
[INFO] [stdout]    |                 |
[INFO] [stdout]    |                 the lifetime is elided here
[INFO] [stdout]    |
[INFO] [stdout]    = help: the same lifetime is referred to in inconsistent ways, making the signature confusing
[INFO] [stdout]    = note: `#[warn(mismatched_lifetime_syntaxes)]` on by default
[INFO] [stdout] help: use `'_` for type paths
[INFO] [stdout]    |
[INFO] [stdout] 44 |     pub fn iter(&self) -> std::slice::Iter<'_, Ticket> {
[INFO] [stdout]    |                                            +++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `spawner` is never used
[INFO] [stdout]  --> exercises/08_futures/04_future/src/lib.rs:8:4
[INFO] [stdout]   |
[INFO] [stdout] 8 | fn spawner() {
[INFO] [stdout]   |    ^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `example` is never used
[INFO] [stdout]   --> exercises/08_futures/04_future/src/lib.rs:12:10
[INFO] [stdout]    |
[INFO] [stdout] 12 | async fn example() {
[INFO] [stdout]    |          ^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused `Result` in tuple element 0 that must be used
[INFO] [stdout]   --> exercises/08_futures/03_runtime/src/lib.rs:18:5
[INFO] [stdout]    |
[INFO] [stdout] 18 |     tokio::join!(handle1, handle2);
[INFO] [stdout]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stdout]    = note: `#[warn(unused_must_use)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused `Result` in tuple element 1 that must be used
[INFO] [stdout]   --> exercises/08_futures/03_runtime/src/lib.rs:18:5
[INFO] [stdout]    |
[INFO] [stdout] 18 |     tokio::join!(handle1, handle2);
[INFO] [stdout]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `anyhow::Error`
[INFO] [stdout]  --> exercises/05_ticket_v2/11_dependencies/src/lib.rs:6:5
[INFO] [stdout]   |
[INFO] [stdout] 6 | use anyhow::Error;
[INFO] [stdout]   |     ^^^^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `intro` is never used
[INFO] [stdout]  --> exercises/05_ticket_v2/00_intro/src/lib.rs:1:4
[INFO] [stdout]   |
[INFO] [stdout] 1 | fn intro() -> &'static str {
[INFO] [stdout]   |    ^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `intro` is never used
[INFO] [stdout]  --> exercises/08_futures/00_intro/src/lib.rs:1:4
[INFO] [stdout]   |
[INFO] [stdout] 1 | fn intro() -> &'static str {
[INFO] [stdout]   |    ^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct `Ticket` is never constructed
[INFO] [stdout]   --> exercises/04_traits/04_derive/src/lib.rs:12:8
[INFO] [stdout]    |
[INFO] [stdout] 12 | struct Ticket {
[INFO] [stdout]    |        ^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct `Ticket` is never constructed
[INFO] [stdout]  --> exercises/05_ticket_v2/03_variants_with_data/src/lib.rs:6:8
[INFO] [stdout]   |
[INFO] [stdout] 6 | struct Ticket {
[INFO] [stdout]   |        ^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: enum `Status` is never used
[INFO] [stdout]   --> exercises/05_ticket_v2/03_variants_with_data/src/lib.rs:13:6
[INFO] [stdout]    |
[INFO] [stdout] 13 | enum Status {
[INFO] [stdout]    |      ^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated items `new` and `assigned_to` are never used
[INFO] [stdout]   --> exercises/05_ticket_v2/03_variants_with_data/src/lib.rs:20:12
[INFO] [stdout]    |
[INFO] [stdout] 19 | impl Ticket {
[INFO] [stdout]    | ----------- associated items in this implementation
[INFO] [stdout] 20 |     pub fn new(title: String, description: String, status: Status) -> Ticket {
[INFO] [stdout]    |            ^^^
[INFO] [stdout] ...
[INFO] [stdout] 40 |     pub fn assigned_to(&self) -> &str {
[INFO] [stdout]    |            ^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait `Power` is never used
[INFO] [stdout]   --> exercises/04_traits/10_assoc_vs_generic/src/lib.rs:15:7
[INFO] [stdout]    |
[INFO] [stdout] 15 | trait Power<Rhs = Self> {
[INFO] [stdout]    |       ^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait `IsEven` is never used
[INFO] [stdout]  --> exercises/04_traits/01_trait/src/lib.rs:6:7
[INFO] [stdout]   |
[INFO] [stdout] 6 | trait IsEven {
[INFO] [stdout]   |       ^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `outro` is never used
[INFO] [stdout]  --> exercises/07_threads/14_sync/src/lib.rs:2:4
[INFO] [stdout]   |
[INFO] [stdout] 2 | fn outro() -> &'static str {
[INFO] [stdout]   |    ^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `wrapping`
[INFO] [stdout]   --> exercises/04_traits/09_from/src/lib.rs:14:9
[INFO] [stdout]    |
[INFO] [stdout] 14 |     let wrapping: WrappingU32 = 42.into();
[INFO] [stdout]    |         ^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_wrapping`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_variables)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `wrapping`
[INFO] [stdout]   --> exercises/04_traits/09_from/src/lib.rs:15:9
[INFO] [stdout]    |
[INFO] [stdout] 15 |     let wrapping = WrappingU32::from(42);
[INFO] [stdout]    |         ^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_wrapping`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field `value` is never read
[INFO] [stdout]  --> exercises/04_traits/09_from/src/lib.rs:4:5
[INFO] [stdout]   |
[INFO] [stdout] 3 | pub struct WrappingU32 {
[INFO] [stdout]   |            ----------- field in this struct
[INFO] [stdout] 4 |     value: u32,
[INFO] [stdout]   |     ^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `example` is never used
[INFO] [stdout]   --> exercises/04_traits/09_from/src/lib.rs:13:4
[INFO] [stdout]    |
[INFO] [stdout] 13 | fn example() {
[INFO] [stdout]    |    ^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct `Ticket` is never constructed
[INFO] [stdout]  --> exercises/04_traits/03_operator_overloading/src/lib.rs:3:8
[INFO] [stdout]   |
[INFO] [stdout] 3 | struct Ticket {
[INFO] [stdout]   |        ^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `intro` is never used
[INFO] [stdout]  --> exercises/04_traits/00_intro/src/lib.rs:1:4
[INFO] [stdout]   |
[INFO] [stdout] 1 | fn intro() -> &'static str {
[INFO] [stdout]   |    ^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: enum `TicketNewError` is never used
[INFO] [stdout]  --> exercises/05_ticket_v2/08_error_enums/src/lib.rs:5:6
[INFO] [stdout]   |
[INFO] [stdout] 5 | enum TicketNewError {
[INFO] [stdout]   |      ^^^^^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `easy_ticket` is never used
[INFO] [stdout]   --> exercises/05_ticket_v2/08_error_enums/src/lib.rs:14:4
[INFO] [stdout]    |
[INFO] [stdout] 14 | fn easy_ticket(title: String, description: String, status: Status) -> Ticket {
[INFO] [stdout]    |    ^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct `Ticket` is never constructed
[INFO] [stdout]   --> exercises/05_ticket_v2/08_error_enums/src/lib.rs:27:8
[INFO] [stdout]    |
[INFO] [stdout] 27 | struct Ticket {
[INFO] [stdout]    |        ^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: enum `Status` is never used
[INFO] [stdout]   --> exercises/05_ticket_v2/08_error_enums/src/lib.rs:34:6
[INFO] [stdout]    |
[INFO] [stdout] 34 | enum Status {
[INFO] [stdout]    |      ^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function `new` is never used
[INFO] [stdout]   --> exercises/05_ticket_v2/08_error_enums/src/lib.rs:41:12
[INFO] [stdout]    |
[INFO] [stdout] 40 | impl Ticket {
[INFO] [stdout]    | ----------- associated function in this implementation
[INFO] [stdout] 41 |     pub fn new(
[INFO] [stdout]    |            ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `write`
[INFO] [stdout]  --> exercises/05_ticket_v2/09_error_trait/src/lib.rs:7:16
[INFO] [stdout]   |
[INFO] [stdout] 7 | use std::fmt::{write, Display};
[INFO] [stdout]   |                ^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: enum `TicketNewError` is never used
[INFO] [stdout]   --> exercises/05_ticket_v2/09_error_trait/src/lib.rs:10:6
[INFO] [stdout]    |
[INFO] [stdout] 10 | enum TicketNewError {
[INFO] [stdout]    |      ^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `easy_ticket` is never used
[INFO] [stdout]   --> exercises/05_ticket_v2/09_error_trait/src/lib.rs:30:4
[INFO] [stdout]    |
[INFO] [stdout] 30 | fn easy_ticket(title: String, description: String, status: Status) -> Ticket {
[INFO] [stdout]    |    ^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct `Ticket` is never constructed
[INFO] [stdout]   --> exercises/05_ticket_v2/09_error_trait/src/lib.rs:43:8
[INFO] [stdout]    |
[INFO] [stdout] 43 | struct Ticket {
[INFO] [stdout]    |        ^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: enum `Status` is never used
[INFO] [stdout]   --> exercises/05_ticket_v2/09_error_trait/src/lib.rs:50:6
[INFO] [stdout]    |
[INFO] [stdout] 50 | enum Status {
[INFO] [stdout]    |      ^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function `new` is never used
[INFO] [stdout]   --> exercises/05_ticket_v2/09_error_trait/src/lib.rs:57:12
[INFO] [stdout]    |
[INFO] [stdout] 56 | impl Ticket {
[INFO] [stdout]    | ----------- associated function in this implementation
[INFO] [stdout] 57 |     pub fn new(
[INFO] [stdout]    |            ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `outro` is never used
[INFO] [stdout]  --> exercises/03_ticket_v1/11_destructor/src/lib.rs:4:4
[INFO] [stdout]   |
[INFO] [stdout] 4 | fn outro() -> &'static str {
[INFO] [stdout]   |    ^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct `Ticket` is never constructed
[INFO] [stdout]  --> exercises/05_ticket_v2/01_enum/src/lib.rs:7:8
[INFO] [stdout]   |
[INFO] [stdout] 7 | struct Ticket {
[INFO] [stdout]   |        ^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: enum `Status` is never used
[INFO] [stdout]   --> exercises/05_ticket_v2/01_enum/src/lib.rs:14:6
[INFO] [stdout]    |
[INFO] [stdout] 14 | enum Status {
[INFO] [stdout]    |      ^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated items `new`, `title`, `description`, and `status` are never used
[INFO] [stdout]   --> exercises/05_ticket_v2/01_enum/src/lib.rs:22:12
[INFO] [stdout]    |
[INFO] [stdout] 21 | impl Ticket {
[INFO] [stdout]    | ----------- associated items in this implementation
[INFO] [stdout] 22 |     pub fn new(title: String, description: String, status: Status) -> Ticket {
[INFO] [stdout]    |            ^^^
[INFO] [stdout] ...
[INFO] [stdout] 43 |     pub fn title(&self) -> &String {
[INFO] [stdout]    |            ^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 47 |     pub fn description(&self) -> &String {
[INFO] [stdout]    |            ^^^^^^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 51 |     pub fn status(&self) -> &Status {
[INFO] [stdout]    |            ^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `intro` is never used
[INFO] [stdout]  --> exercises/06_ticket_management/00_intro/src/lib.rs:1:4
[INFO] [stdout]   |
[INFO] [stdout] 1 | fn intro() -> &'static str {
[INFO] [stdout]   |    ^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `intro` is never used
[INFO] [stdout]  --> exercises/07_threads/00_intro/src/lib.rs:1:4
[INFO] [stdout]   |
[INFO] [stdout] 1 | fn intro() -> &'static str {
[INFO] [stdout]   |    ^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: enum `Shape` is never used
[INFO] [stdout]  --> exercises/05_ticket_v2/04_if_let/src/lib.rs:1:6
[INFO] [stdout]   |
[INFO] [stdout] 1 | enum Shape {
[INFO] [stdout]   |      ^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: method `radius` is never used
[INFO] [stdout]   --> exercises/05_ticket_v2/04_if_let/src/lib.rs:10:12
[INFO] [stdout]    |
[INFO] [stdout]  7 | impl Shape {
[INFO] [stdout]    | ---------- method in this implementation
[INFO] [stdout] ...
[INFO] [stdout] 10 |     pub fn radius(&self) -> f64 {
[INFO] [stdout]    |            ^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: fields `title`, `description`, and `status` are never read
[INFO] [stdout]  --> exercises/03_ticket_v1/09_heap/src/lib.rs:2:5
[INFO] [stdout]   |
[INFO] [stdout] 1 | pub struct Ticket {
[INFO] [stdout]   |            ------ fields in this struct
[INFO] [stdout] 2 |     title: String,
[INFO] [stdout]   |     ^^^^^
[INFO] [stdout] 3 |     description: String,
[INFO] [stdout]   |     ^^^^^^^^^^^
[INFO] [stdout] 4 |     status: String,
[INFO] [stdout]   |     ^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: fields `title`, `description`, and `status` are never read
[INFO] [stdout]  --> exercises/03_ticket_v1/10_references_in_memory/src/lib.rs:2:5
[INFO] [stdout]   |
[INFO] [stdout] 1 | pub struct Ticket {
[INFO] [stdout]   |            ------ fields in this struct
[INFO] [stdout] 2 |     title: String,
[INFO] [stdout]   |     ^^^^^
[INFO] [stdout] 3 |     description: String,
[INFO] [stdout]   |     ^^^^^^^^^^^
[INFO] [stdout] 4 |     status: String,
[INFO] [stdout]   |     ^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field `status` is never read
[INFO] [stdout]   --> exercises/04_traits/07_deref/src/lib.rs:10:5
[INFO] [stdout]    |
[INFO] [stdout]  7 | pub struct Ticket {
[INFO] [stdout]    |            ------ field in this struct
[INFO] [stdout] ...
[INFO] [stdout] 10 |     status: String,
[INFO] [stdout]    |     ^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct `Ticket` is never constructed
[INFO] [stdout]  --> exercises/05_ticket_v2/05_nullability/src/lib.rs:4:8
[INFO] [stdout]   |
[INFO] [stdout] 4 | struct Ticket {
[INFO] [stdout]   |        ^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: enum `Status` is never used
[INFO] [stdout]   --> exercises/05_ticket_v2/05_nullability/src/lib.rs:11:6
[INFO] [stdout]    |
[INFO] [stdout] 11 | enum Status {
[INFO] [stdout]    |      ^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated items `new` and `assigned_to` are never used
[INFO] [stdout]   --> exercises/05_ticket_v2/05_nullability/src/lib.rs:18:12
[INFO] [stdout]    |
[INFO] [stdout] 17 | impl Ticket {
[INFO] [stdout]    | ----------- associated items in this implementation
[INFO] [stdout] 18 |     pub fn new(title: String, description: String, status: Status) -> Ticket {
[INFO] [stdout]    |            ^^^
[INFO] [stdout] ...
[INFO] [stdout] 38 |     pub fn assigned_to(&self) -> Option<&String> {
[INFO] [stdout]    |            ^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct `DropBomb` is never constructed
[INFO] [stdout]  --> exercises/04_traits/13_drop/src/lib.rs:5:8
[INFO] [stdout]   |
[INFO] [stdout] 5 | struct DropBomb {
[INFO] [stdout]   |        ^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated items `new` and `defuse` are never used
[INFO] [stdout]   --> exercises/04_traits/13_drop/src/lib.rs:10:8
[INFO] [stdout]    |
[INFO] [stdout]  9 | impl DropBomb {
[INFO] [stdout]    | ------------- associated items in this implementation
[INFO] [stdout] 10 |     fn new() -> Self {
[INFO] [stdout]    |        ^^^
[INFO] [stdout] ...
[INFO] [stdout] 14 |     fn defuse(&mut self) {
[INFO] [stdout]    |        ^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: enum `Shape` is never used
[INFO] [stdout]  --> exercises/05_ticket_v2/02_match/src/lib.rs:1:6
[INFO] [stdout]   |
[INFO] [stdout] 1 | enum Shape {
[INFO] [stdout]   |      ^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]    Compiling mdbook-link-shortener v0.1.0 (/opt/rustwide/workdir/helpers/mdbook-link-shortener)
[INFO] [stdout] warning: method `n_sides` is never used
[INFO] [stdout]   --> exercises/05_ticket_v2/02_match/src/lib.rs:11:12
[INFO] [stdout]    |
[INFO] [stdout]  9 | impl Shape {
[INFO] [stdout]    | ---------- method in this implementation
[INFO] [stdout] 10 |     // TODO: Implement the `n_sides` method using a `match`.
[INFO] [stdout] 11 |     pub fn n_sides(&self) -> u8 {
[INFO] [stdout]    |            ^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]    Compiling mdbook-exercise-linker v0.1.0 (/opt/rustwide/workdir/helpers/mdbook-exercise-linker)
[INFO] [stdout] warning: struct `Ticket` is never constructed
[INFO] [stdout]  --> exercises/05_ticket_v2/06_fallibility/src/lib.rs:5:8
[INFO] [stdout]   |
[INFO] [stdout] 5 | struct Ticket {
[INFO] [stdout]   |        ^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: enum `Status` is never used
[INFO] [stdout]   --> exercises/05_ticket_v2/06_fallibility/src/lib.rs:12:6
[INFO] [stdout]    |
[INFO] [stdout] 12 | enum Status {
[INFO] [stdout]    |      ^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function `new` is never used
[INFO] [stdout]   --> exercises/05_ticket_v2/06_fallibility/src/lib.rs:19:12
[INFO] [stdout]    |
[INFO] [stdout] 18 | impl Ticket {
[INFO] [stdout]    | ----------- associated function in this implementation
[INFO] [stdout] 19 |     pub fn new(title: String, description: String, status: Status) -> Result<Ticket, String> {
[INFO] [stdout]    |            ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: enum `Status` is never used
[INFO] [stdout]  --> exercises/05_ticket_v2/13_try_from/src/lib.rs:5:6
[INFO] [stdout]   |
[INFO] [stdout] 5 | enum Status {
[INFO] [stdout]   |      ^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field `value` is never read
[INFO] [stdout]  --> exercises/07_threads/06_interior_mutability/src/lib.rs:8:5
[INFO] [stdout]   |
[INFO] [stdout] 7 | pub struct DropTracker<T> {
[INFO] [stdout]   |            ----------- field in this struct
[INFO] [stdout] 8 |     value: T,
[INFO] [stdout]   |     ^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `easy_ticket` is never used
[INFO] [stdout]  --> exercises/05_ticket_v2/07_unwrap/src/lib.rs:4:4
[INFO] [stdout]   |
[INFO] [stdout] 4 | fn easy_ticket(title: String, description: String, status: Status) -> Ticket {
[INFO] [stdout]   |    ^^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct `Ticket` is never constructed
[INFO] [stdout]   --> exercises/05_ticket_v2/07_unwrap/src/lib.rs:19:8
[INFO] [stdout]    |
[INFO] [stdout] 19 | struct Ticket {
[INFO] [stdout]    |        ^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: enum `Status` is never used
[INFO] [stdout]   --> exercises/05_ticket_v2/07_unwrap/src/lib.rs:26:6
[INFO] [stdout]    |
[INFO] [stdout] 26 | enum Status {
[INFO] [stdout]    |      ^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function `new` is never used
[INFO] [stdout]   --> exercises/05_ticket_v2/07_unwrap/src/lib.rs:33:12
[INFO] [stdout]    |
[INFO] [stdout] 32 | impl Ticket {
[INFO] [stdout]    | ----------- associated function in this implementation
[INFO] [stdout] 33 |     pub fn new(title: String, description: String, status: Status) -> Result<Ticket, String> {
[INFO] [stdout]    |            ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct `Ticket` is never constructed
[INFO] [stdout]  --> exercises/03_ticket_v1/04_visibility/src/lib.rs:2:16
[INFO] [stdout]   |
[INFO] [stdout] 2 |     pub struct Ticket {
[INFO] [stdout]   |                ^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function `new` is never used
[INFO] [stdout]  --> exercises/03_ticket_v1/04_visibility/src/lib.rs:9:16
[INFO] [stdout]   |
[INFO] [stdout] 8 |     impl Ticket {
[INFO] [stdout]   |     ----------- associated function in this implementation
[INFO] [stdout] 9 |         pub fn new(title: String, description: String, status: String) -> Ticket {
[INFO] [stdout]   |                ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]    Compiling outro_03 v0.1.0 (/opt/rustwide/workdir/exercises/04_traits/14_outro)
[INFO] [stderr]    Compiling packages v0.1.0 (/opt/rustwide/workdir/exercises/05_ticket_v2/10_packages)
[INFO] [stderr]    Compiling locks v0.1.0 (/opt/rustwide/workdir/exercises/07_threads/11_locks)
[INFO] [stderr]    Compiling rwlock v0.1.0 (/opt/rustwide/workdir/exercises/07_threads/12_rw_lock)
[INFO] [stderr]    Compiling outro_02 v0.1.0 (/opt/rustwide/workdir/exercises/03_ticket_v1/12_outro)
[INFO] [stderr]    Compiling error_trait v0.1.0 (/opt/rustwide/workdir/exercises/05_ticket_v2/09_error_trait)
[INFO] [stderr]    Compiling patch v0.1.0 (/opt/rustwide/workdir/exercises/07_threads/10_patch)
[INFO] [stderr]    Compiling channels v0.1.0 (/opt/rustwide/workdir/exercises/07_threads/05_channels)
[INFO] [stderr]    Compiling response v0.1.0 (/opt/rustwide/workdir/exercises/07_threads/07_ack)
[INFO] [stderr]    Compiling client v0.1.0 (/opt/rustwide/workdir/exercises/07_threads/08_client)
[INFO] [stderr]    Compiling without_channels v0.1.0 (/opt/rustwide/workdir/exercises/07_threads/13_without_channels)
[INFO] [stderr]    Compiling bounded v0.1.0 (/opt/rustwide/workdir/exercises/07_threads/09_bounded)
[INFO] [stdout] warning: unused import: `write`
[INFO] [stdout]  --> exercises/05_ticket_v2/09_error_trait/src/lib.rs:7:16
[INFO] [stdout]   |
[INFO] [stdout] 7 | use std::fmt::{write, Display};
[INFO] [stdout]   |                ^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variants `InProgress` and `Done` are never constructed
[INFO] [stdout]   --> exercises/05_ticket_v2/09_error_trait/src/lib.rs:52:5
[INFO] [stdout]    |
[INFO] [stdout] 50 | enum Status {
[INFO] [stdout]    |      ------ variants in this enum
[INFO] [stdout] 51 |     ToDo,
[INFO] [stdout] 52 |     InProgress { assigned_to: String },
[INFO] [stdout]    |     ^^^^^^^^^^
[INFO] [stdout] 53 |     Done,
[INFO] [stdout]    |     ^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `Status` has derived impls for the traits `Clone` and `Debug`, but these are intentionally ignored during dead code analysis
[INFO] [stdout]    = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]    Compiling outro_04 v0.1.0 (/opt/rustwide/workdir/exercises/05_ticket_v2/15_outro)
[INFO] [stderr]    Compiling thiserror_ v0.1.0 (/opt/rustwide/workdir/exercises/05_ticket_v2/12_thiserror)
[INFO] [stderr]    Compiling two_states v0.1.0 (/opt/rustwide/workdir/exercises/06_ticket_management/12_two_states)
[INFO] [stdout] warning: unused imports: `RecvError`, `SendError`, and `Sender`
[INFO] [stdout]  --> exercises/07_threads/09_bounded/src/lib.rs:4:39
[INFO] [stdout]   |
[INFO] [stdout] 4 | use std::sync::mpsc::{self, Receiver, RecvError, SendError, Sender, SyncSender};
[INFO] [stdout]   |                                       ^^^^^^^^^  ^^^^^^^^^  ^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]    Compiling hashmap v0.1.0 (/opt/rustwide/workdir/exercises/06_ticket_management/15_hashmap)
[INFO] [stdout] warning: variants `InProgress` and `Done` are never constructed
[INFO] [stdout]   --> exercises/05_ticket_v2/12_thiserror/src/lib.rs:29:5
[INFO] [stdout]    |
[INFO] [stdout] 27 | enum Status {
[INFO] [stdout]    |      ------ variants in this enum
[INFO] [stdout] 28 |     ToDo,
[INFO] [stdout] 29 |     InProgress { assigned_to: String },
[INFO] [stdout]    |     ^^^^^^^^^^
[INFO] [stdout] 30 |     Done,
[INFO] [stdout]    |     ^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `Status` has derived impls for the traits `Clone` and `Debug`, but these are intentionally ignored during dead code analysis
[INFO] [stdout]    = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: type `Command` is more private than the item `TicketStoreClient::new`
[INFO] [stdout]   --> exercises/07_threads/08_client/src/lib.rs:14:5
[INFO] [stdout]    |
[INFO] [stdout] 14 |     pub fn new(sender: Sender<Command>) -> Self {
[INFO] [stdout]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ associated function `TicketStoreClient::new` is reachable at visibility `pub`
[INFO] [stdout]    |
[INFO] [stdout] note: but type `Command` is only usable at visibility `pub(crate)`
[INFO] [stdout]   --> exercises/07_threads/08_client/src/lib.rs:54:1
[INFO] [stdout]    |
[INFO] [stdout] 54 | enum Command {
[INFO] [stdout]    | ^^^^^^^^^^^^
[INFO] [stdout]    = note: `#[warn(private_interfaces)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]    Compiling impl_trait_2 v0.1.0 (/opt/rustwide/workdir/exercises/06_ticket_management/09_impl_trait_2)
[INFO] [stderr]    Compiling btreemap v0.1.0 (/opt/rustwide/workdir/exercises/06_ticket_management/16_btreemap)
[INFO] [stderr]    Compiling iterators v0.1.0 (/opt/rustwide/workdir/exercises/06_ticket_management/04_iterators)
[INFO] [stderr]    Compiling lifetime v0.1.0 (/opt/rustwide/workdir/exercises/06_ticket_management/06_lifetimes)
[INFO] [stdout] warning: unused variable: `ticket2`
[INFO] [stdout]   --> exercises/06_ticket_management/12_two_states/src/lib.rs:91:13
[INFO] [stdout]    |
[INFO] [stdout] 91 |         let ticket2 = store.get(id2).unwrap();
[INFO] [stdout]    |             ^^^^^^^ help: if this is intentional, prefix it with an underscore: `_ticket2`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_variables)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `TrySendError`
[INFO] [stdout]  --> exercises/07_threads/11_locks/src/lib.rs:4:59
[INFO] [stdout]   |
[INFO] [stdout] 4 | use std::sync::mpsc::{sync_channel, Receiver, SyncSender, TrySendError};
[INFO] [stdout]   |                                                           ^^^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]    Compiling combinators v0.1.0 (/opt/rustwide/workdir/exercises/06_ticket_management/07_combinators)
[INFO] [stderr]    Compiling iter v0.1.0 (/opt/rustwide/workdir/exercises/06_ticket_management/05_iter)
[INFO] [stdout] warning: unused variable: `i`
[INFO] [stdout]    --> exercises/06_ticket_management/16_btreemap/src/lib.rs:119:13
[INFO] [stdout]     |
[INFO] [stdout] 119 |         for i in 0..n_tickets {
[INFO] [stdout]     |             ^ help: if this is intentional, prefix it with an underscore: `_i`
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(unused_variables)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: type `Command` is more private than the item `server`
[INFO] [stdout]   --> exercises/07_threads/11_locks/src/lib.rs:63:1
[INFO] [stdout]    |
[INFO] [stdout] 63 | pub fn server(receiver: Receiver<Command>) {
[INFO] [stdout]    | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ function `server` is reachable at visibility `pub`
[INFO] [stdout]    |
[INFO] [stdout] note: but type `Command` is only usable at visibility `pub(crate)`
[INFO] [stdout]   --> exercises/07_threads/11_locks/src/lib.rs:52:1
[INFO] [stdout]    |
[INFO] [stdout] 52 | enum Command {
[INFO] [stdout]    | ^^^^^^^^^^^^
[INFO] [stdout]    = note: `#[warn(private_interfaces)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]    Compiling impl_trait v0.1.0 (/opt/rustwide/workdir/exercises/06_ticket_management/08_impl_trait)
[INFO] [stdout] warning: unused import: `TrySendError`
[INFO] [stdout]  --> exercises/07_threads/12_rw_lock/src/lib.rs:3:59
[INFO] [stdout]   |
[INFO] [stdout] 3 | use std::sync::mpsc::{sync_channel, Receiver, SyncSender, TrySendError};
[INFO] [stdout]   |                                                           ^^^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `Mutex`
[INFO] [stdout]  --> exercises/07_threads/12_rw_lock/src/lib.rs:4:22
[INFO] [stdout]   |
[INFO] [stdout] 4 | use std::sync::{Arc, Mutex, RwLock};
[INFO] [stdout]   |                      ^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: type `Command` is more private than the item `server`
[INFO] [stdout]   --> exercises/07_threads/12_rw_lock/src/lib.rs:62:1
[INFO] [stdout]    |
[INFO] [stdout] 62 | pub fn server(receiver: Receiver<Command>) {
[INFO] [stdout]    | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ function `server` is reachable at visibility `pub`
[INFO] [stdout]    |
[INFO] [stdout] note: but type `Command` is only usable at visibility `pub(crate)`
[INFO] [stdout]   --> exercises/07_threads/12_rw_lock/src/lib.rs:51:1
[INFO] [stdout]    |
[INFO] [stdout] 51 | enum Command {
[INFO] [stdout]    | ^^^^^^^^^^^^
[INFO] [stdout]    = note: `#[warn(private_interfaces)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]    Compiling index v0.1.0 (/opt/rustwide/workdir/exercises/06_ticket_management/13_index)
[INFO] [stdout] warning: hiding a lifetime that's elided elsewhere is confusing
[INFO] [stdout]   --> exercises/06_ticket_management/06_lifetimes/src/lib.rs:44:17
[INFO] [stdout]    |
[INFO] [stdout] 44 |     pub fn iter(&self) -> std::slice::Iter<Ticket> {
[INFO] [stdout]    |                 ^^^^^     ------------------------ the same lifetime is hidden here
[INFO] [stdout]    |                 |
[INFO] [stdout]    |                 the lifetime is elided here
[INFO] [stdout]    |
[INFO] [stdout]    = help: the same lifetime is referred to in inconsistent ways, making the signature confusing
[INFO] [stdout]    = note: `#[warn(mismatched_lifetime_syntaxes)]` on by default
[INFO] [stdout] help: use `'_` for type paths
[INFO] [stdout]    |
[INFO] [stdout] 44 |     pub fn iter(&self) -> std::slice::Iter<'_, Ticket> {
[INFO] [stdout]    |                                            +++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: hiding a lifetime that's elided elsewhere is confusing
[INFO] [stdout]   --> exercises/06_ticket_management/05_iter/src/lib.rs:38:17
[INFO] [stdout]    |
[INFO] [stdout] 38 |     pub fn iter(&self) -> std::slice::Iter<Ticket> {
[INFO] [stdout]    |                 ^^^^^     ------------------------ the same lifetime is hidden here
[INFO] [stdout]    |                 |
[INFO] [stdout]    |                 the lifetime is elided here
[INFO] [stdout]    |
[INFO] [stdout]    = help: the same lifetime is referred to in inconsistent ways, making the signature confusing
[INFO] [stdout]    = note: `#[warn(mismatched_lifetime_syntaxes)]` on by default
[INFO] [stdout] help: use `'_` for type paths
[INFO] [stdout]    |
[INFO] [stdout] 38 |     pub fn iter(&self) -> std::slice::Iter<'_, Ticket> {
[INFO] [stdout]    |                                            +++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]    Compiling index_mut v0.1.0 (/opt/rustwide/workdir/exercises/06_ticket_management/14_index_mut)
[INFO] [stderr]    Compiling cancellation v0.1.0 (/opt/rustwide/workdir/exercises/08_futures/07_cancellation)
[INFO] [stderr]    Compiling ticket_fields v0.1.0 (/opt/rustwide/workdir/helpers/ticket_fields)
[INFO] [stderr]    Compiling future v0.1.0 (/opt/rustwide/workdir/exercises/08_futures/04_future)
[INFO] [stderr]    Compiling source v0.1.0 (/opt/rustwide/workdir/exercises/05_ticket_v2/14_source)
[INFO] [stdout] warning: unused variable: `ticket2`
[INFO] [stdout]    --> exercises/06_ticket_management/13_index/src/lib.rs:105:13
[INFO] [stdout]     |
[INFO] [stdout] 105 |         let ticket2 = &store[&id2];
[INFO] [stdout]     |             ^^^^^^^ help: if this is intentional, prefix it with an underscore: `_ticket2`
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(unused_variables)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: type `Command` is more private than the item `server`
[INFO] [stdout]   --> exercises/07_threads/10_patch/src/lib.rs:75:1
[INFO] [stdout]    |
[INFO] [stdout] 75 | pub fn server(receiver: Receiver<Command>) {
[INFO] [stdout]    | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ function `server` is reachable at visibility `pub`
[INFO] [stdout]    |
[INFO] [stdout] note: but type `Command` is only usable at visibility `pub(crate)`
[INFO] [stdout]   --> exercises/07_threads/10_patch/src/lib.rs:60:1
[INFO] [stdout]    |
[INFO] [stdout] 60 | enum Command {
[INFO] [stdout]    | ^^^^^^^^^^^^
[INFO] [stdout]    = note: `#[warn(private_interfaces)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]    Compiling async_locks v0.1.0 (/opt/rustwide/workdir/exercises/08_futures/06_async_aware_primitives)
[INFO] [stderr]    Compiling spawn v0.1.0 (/opt/rustwide/workdir/exercises/08_futures/02_spawn)
[INFO] [stderr]    Compiling async_fn v0.1.0 (/opt/rustwide/workdir/exercises/08_futures/01_async_fn)
[INFO] [stderr]    Compiling outro_08 v0.1.0 (/opt/rustwide/workdir/exercises/08_futures/08_outro)
[INFO] [stderr]    Compiling blocking v0.1.0 (/opt/rustwide/workdir/exercises/08_futures/05_blocking)
[INFO] [stderr]    Compiling runtime v0.1.0 (/opt/rustwide/workdir/exercises/08_futures/03_runtime)
[INFO] [stdout] warning: function `spawner` is never used
[INFO] [stdout]  --> exercises/08_futures/04_future/src/lib.rs:8:4
[INFO] [stdout]   |
[INFO] [stdout] 8 | fn spawner() {
[INFO] [stdout]   |    ^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `example` is never used
[INFO] [stdout]   --> exercises/08_futures/04_future/src/lib.rs:12:10
[INFO] [stdout]    |
[INFO] [stdout] 12 | async fn example() {
[INFO] [stdout]    |          ^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]    Compiling deps v0.1.0 (/opt/rustwide/workdir/exercises/05_ticket_v2/11_dependencies)
[INFO] [stderr]    Compiling error_enums v0.1.0 (/opt/rustwide/workdir/exercises/05_ticket_v2/08_error_enums)
[INFO] [stdout] warning: unused import: `anyhow::Error`
[INFO] [stdout]  --> exercises/05_ticket_v2/11_dependencies/src/lib.rs:6:5
[INFO] [stdout]   |
[INFO] [stdout] 6 | use anyhow::Error;
[INFO] [stdout]   |     ^^^^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]    Compiling fallibility v0.1.0 (/opt/rustwide/workdir/exercises/05_ticket_v2/06_fallibility)
[INFO] [stdout] warning: unused `Result` in tuple element 0 that must be used
[INFO] [stdout]   --> exercises/08_futures/03_runtime/src/lib.rs:18:5
[INFO] [stdout]    |
[INFO] [stdout] 18 |     tokio::join!(handle1, handle2);
[INFO] [stdout]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stdout]    = note: `#[warn(unused_must_use)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused `Result` in tuple element 1 that must be used
[INFO] [stdout]   --> exercises/08_futures/03_runtime/src/lib.rs:18:5
[INFO] [stdout]    |
[INFO] [stdout] 18 |     tokio::join!(handle1, handle2);
[INFO] [stdout]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]    Compiling setters v0.1.0 (/opt/rustwide/workdir/exercises/03_ticket_v1/07_setters)
[INFO] [stdout] warning: variants `InProgress` and `Done` are never constructed
[INFO] [stdout]   --> exercises/05_ticket_v2/06_fallibility/src/lib.rs:14:5
[INFO] [stdout]    |
[INFO] [stdout] 12 | enum Status {
[INFO] [stdout]    |      ------ variants in this enum
[INFO] [stdout] 13 |     ToDo,
[INFO] [stdout] 14 |     InProgress { assigned_to: String },
[INFO] [stdout]    |     ^^^^^^^^^^
[INFO] [stdout] 15 |     Done,
[INFO] [stdout]    |     ^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `Status` has a derived impl for the trait `Debug`, but this is intentionally ignored during dead code analysis
[INFO] [stdout]    = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field `0` is never read
[INFO] [stdout]  --> exercises/05_ticket_v2/08_error_enums/src/lib.rs:7:22
[INFO] [stdout]   |
[INFO] [stdout] 7 |     DescriptionError(String),
[INFO] [stdout]   |     ---------------- ^^^^^^
[INFO] [stdout]   |     |
[INFO] [stdout]   |     field in this variant
[INFO] [stdout]   |
[INFO] [stdout]   = note: `TicketNewError` has a derived impl for the trait `Debug`, but this is intentionally ignored during dead code analysis
[INFO] [stdout]   = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] help: consider changing the field to be of unit type to suppress this warning while preserving the field numbering, or remove the field
[INFO] [stdout]   |
[INFO] [stdout] 7 -     DescriptionError(String),
[INFO] [stdout] 7 +     DescriptionError(()),
[INFO] [stdout]   |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variants `InProgress` and `Done` are never constructed
[INFO] [stdout]   --> exercises/05_ticket_v2/08_error_enums/src/lib.rs:36:5
[INFO] [stdout]    |
[INFO] [stdout] 34 | enum Status {
[INFO] [stdout]    |      ------ variants in this enum
[INFO] [stdout] 35 |     ToDo,
[INFO] [stdout] 36 |     InProgress { assigned_to: String },
[INFO] [stdout]    |     ^^^^^^^^^^
[INFO] [stdout] 37 |     Done,
[INFO] [stdout]    |     ^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `Status` has derived impls for the traits `Clone` and `Debug`, but these are intentionally ignored during dead code analysis
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]    Compiling str_slice v0.1.0 (/opt/rustwide/workdir/exercises/04_traits/06_str_slice)
[INFO] [stderr]    Compiling nullability v0.1.0 (/opt/rustwide/workdir/exercises/05_ticket_v2/05_nullability)
[INFO] [stderr]    Compiling unwrap v0.1.0 (/opt/rustwide/workdir/exercises/05_ticket_v2/07_unwrap)
[INFO] [stderr]    Compiling validation v0.1.0 (/opt/rustwide/workdir/exercises/03_ticket_v1/02_validation)
[INFO] [stderr]    Compiling enum_ v0.1.0 (/opt/rustwide/workdir/exercises/05_ticket_v2/01_enum)
[INFO] [stderr]    Compiling variants_with_data v0.1.0 (/opt/rustwide/workdir/exercises/05_ticket_v2/03_variants_with_data)
[INFO] [stderr]    Compiling interior_mutability v0.1.0 (/opt/rustwide/workdir/exercises/07_threads/06_interior_mutability)
[INFO] [stderr]    Compiling variables v0.1.0 (/opt/rustwide/workdir/exercises/02_basic_calculator/02_variables)
[INFO] [stdout] warning: variants `InProgress` and `Done` are never constructed
[INFO] [stdout]   --> exercises/05_ticket_v2/07_unwrap/src/lib.rs:28:5
[INFO] [stdout]    |
[INFO] [stdout] 26 | enum Status {
[INFO] [stdout]    |      ------ variants in this enum
[INFO] [stdout] 27 |     ToDo,
[INFO] [stdout] 28 |     InProgress { assigned_to: String },
[INFO] [stdout]    |     ^^^^^^^^^^
[INFO] [stdout] 29 |     Done,
[INFO] [stdout]    |     ^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `Status` has derived impls for the traits `Clone` and `Debug`, but these are intentionally ignored during dead code analysis
[INFO] [stdout]    = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated items `new`, `title`, `description`, and `status` are never used
[INFO] [stdout]   --> exercises/05_ticket_v2/01_enum/src/lib.rs:22:12
[INFO] [stdout]    |
[INFO] [stdout] 21 | impl Ticket {
[INFO] [stdout]    | ----------- associated items in this implementation
[INFO] [stdout] 22 |     pub fn new(title: String, description: String, status: Status) -> Ticket {
[INFO] [stdout]    |            ^^^
[INFO] [stdout] ...
[INFO] [stdout] 43 |     pub fn title(&self) -> &String {
[INFO] [stdout]    |            ^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 47 |     pub fn description(&self) -> &String {
[INFO] [stdout]    |            ^^^^^^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 51 |     pub fn status(&self) -> &Status {
[INFO] [stdout]    |            ^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `a`
[INFO] [stdout]   --> exercises/07_threads/06_interior_mutability/src/lib.rs:40:17
[INFO] [stdout]    |
[INFO] [stdout] 40 |             let a = DropTracker::new(5, Rc::clone(&counter));
[INFO] [stdout]    |                 ^ help: if this is intentional, prefix it with an underscore: `_a`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_variables)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `b`
[INFO] [stdout]   --> exercises/07_threads/06_interior_mutability/src/lib.rs:41:17
[INFO] [stdout]    |
[INFO] [stdout] 41 |             let b = DropTracker::new(6, Rc::clone(&counter));
[INFO] [stdout]    |                 ^ help: if this is intentional, prefix it with an underscore: `_b`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field `value` is never read
[INFO] [stdout]  --> exercises/07_threads/06_interior_mutability/src/lib.rs:8:5
[INFO] [stdout]   |
[INFO] [stdout] 7 | pub struct DropTracker<T> {
[INFO] [stdout]   |            ----------- field in this struct
[INFO] [stdout] 8 |     value: T,
[INFO] [stdout]   |     ^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]    Compiling sync v0.1.0 (/opt/rustwide/workdir/exercises/07_threads/14_sync)
[INFO] [stderr]    Compiling intro_05 v0.1.0 (/opt/rustwide/workdir/exercises/06_ticket_management/00_intro)
[INFO] [stderr]    Compiling intro_01 v0.1.0 (/opt/rustwide/workdir/exercises/02_basic_calculator/00_intro)
[INFO] [stderr]    Compiling orphan v0.1.0 (/opt/rustwide/workdir/exercises/04_traits/02_orphan_rule)
[INFO] [stderr]    Compiling derives v0.1.0 (/opt/rustwide/workdir/exercises/04_traits/04_derive)
[INFO] [stderr]    Compiling intro_04 v0.1.0 (/opt/rustwide/workdir/exercises/05_ticket_v2/00_intro)
[INFO] [stderr]    Compiling encapsulation v0.1.0 (/opt/rustwide/workdir/exercises/03_ticket_v1/05_encapsulation)
[INFO] [stderr]    Compiling welcome_00 v0.1.0 (/opt/rustwide/workdir/exercises/01_intro/00_welcome)
[INFO] [stderr]    Compiling from v0.1.0 (/opt/rustwide/workdir/exercises/04_traits/09_from)
[INFO] [stderr]    Compiling as_cast v0.1.0 (/opt/rustwide/workdir/exercises/02_basic_calculator/10_as_casting)
[INFO] [stderr]    Compiling slice v0.1.0 (/opt/rustwide/workdir/exercises/06_ticket_management/10_slices)
[INFO] [stderr]    Compiling intro_07 v0.1.0 (/opt/rustwide/workdir/exercises/07_threads/00_intro)
[INFO] [stdout] warning: unused variable: `wrapping`
[INFO] [stdout]   --> exercises/04_traits/09_from/src/lib.rs:14:9
[INFO] [stdout]    |
[INFO] [stdout] 14 |     let wrapping: WrappingU32 = 42.into();
[INFO] [stdout]    |         ^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_wrapping`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_variables)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `wrapping`
[INFO] [stdout]   --> exercises/04_traits/09_from/src/lib.rs:15:9
[INFO] [stdout]    |
[INFO] [stdout] 15 |     let wrapping = WrappingU32::from(42);
[INFO] [stdout]    |         ^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_wrapping`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field `value` is never read
[INFO] [stdout]  --> exercises/04_traits/09_from/src/lib.rs:4:5
[INFO] [stdout]   |
[INFO] [stdout] 3 | pub struct WrappingU32 {
[INFO] [stdout]   |            ----------- field in this struct
[INFO] [stdout] 4 |     value: u32,
[INFO] [stdout]   |     ^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `example` is never used
[INFO] [stdout]   --> exercises/04_traits/09_from/src/lib.rs:13:4
[INFO] [stdout]    |
[INFO] [stdout] 13 | fn example() {
[INFO] [stdout]    |    ^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]    Compiling static v0.1.0 (/opt/rustwide/workdir/exercises/07_threads/02_static)
[INFO] [stderr]    Compiling mut_slice v0.1.0 (/opt/rustwide/workdir/exercises/06_ticket_management/11_mutable_slices)
[INFO] [stderr]    Compiling modules v0.1.0 (/opt/rustwide/workdir/exercises/03_ticket_v1/03_modules)
[INFO] [stderr]    Compiling intro_03 v0.1.0 (/opt/rustwide/workdir/exercises/04_traits/00_intro)
[INFO] [stderr]    Compiling destructor v0.1.0 (/opt/rustwide/workdir/exercises/03_ticket_v1/11_destructor)
[INFO] [stderr]    Compiling resizing v0.1.0 (/opt/rustwide/workdir/exercises/06_ticket_management/03_resizing)
[INFO] [stderr]    Compiling struct_ v0.1.0 (/opt/rustwide/workdir/exercises/03_ticket_v1/01_struct)
[INFO] [stderr]    Compiling stack v0.1.0 (/opt/rustwide/workdir/exercises/03_ticket_v1/08_stack)
[INFO] [stderr]    Compiling while_ v0.1.0 (/opt/rustwide/workdir/exercises/02_basic_calculator/06_while)
[INFO] [stderr]    Compiling vec v0.1.0 (/opt/rustwide/workdir/exercises/06_ticket_management/02_vec)
[INFO] [stderr]    Compiling integers v0.1.0 (/opt/rustwide/workdir/exercises/02_basic_calculator/01_integers)
[INFO] [stderr]    Compiling references_in_memory v0.1.0 (/opt/rustwide/workdir/exercises/03_ticket_v1/10_references_in_memory)
[INFO] [stdout] warning: fields `title`, `description`, and `status` are never read
[INFO] [stdout]  --> exercises/03_ticket_v1/10_references_in_memory/src/lib.rs:2:5
[INFO] [stdout]   |
[INFO] [stdout] 1 | pub struct Ticket {
[INFO] [stdout]   |            ------ fields in this struct
[INFO] [stdout] 2 |     title: String,
[INFO] [stdout]   |     ^^^^^
[INFO] [stdout] 3 |     description: String,
[INFO] [stdout]   |     ^^^^^^^^^^^
[INFO] [stdout] 4 |     status: String,
[INFO] [stdout]   |     ^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]    Compiling leaking v0.1.0 (/opt/rustwide/workdir/exercises/07_threads/03_leak)
[INFO] [stderr]    Compiling overflow v0.1.0 (/opt/rustwide/workdir/exercises/02_basic_calculator/08_overflow)
[INFO] [stderr]    Compiling panics v0.1.0 (/opt/rustwide/workdir/exercises/02_basic_calculator/04_panics)
[INFO] [stderr]    Compiling if_else v0.1.0 (/opt/rustwide/workdir/exercises/02_basic_calculator/03_if_else)
[INFO] [stderr]    Compiling trait_ v0.1.0 (/opt/rustwide/workdir/exercises/04_traits/01_trait)
[INFO] [stderr]    Compiling tryfrom v0.1.0 (/opt/rustwide/workdir/exercises/05_ticket_v2/13_try_from)
[INFO] [stderr]    Compiling threads v0.1.0 (/opt/rustwide/workdir/exercises/07_threads/01_threads)
[INFO] [stderr]    Compiling drop v0.1.0 (/opt/rustwide/workdir/exercises/04_traits/13_drop)
[INFO] [stderr]    Compiling ownership v0.1.0 (/opt/rustwide/workdir/exercises/03_ticket_v1/06_ownership)
[INFO] [stderr]    Compiling arrays v0.1.0 (/opt/rustwide/workdir/exercises/06_ticket_management/01_arrays)
[INFO] [stderr]    Compiling intro_08 v0.1.0 (/opt/rustwide/workdir/exercises/08_futures/00_intro)
[INFO] [stdout] warning: unused variable: `bomb`
[INFO] [stdout]   --> exercises/04_traits/13_drop/src/lib.rs:34:13
[INFO] [stdout]    |
[INFO] [stdout] 34 |         let bomb = DropBomb::new();
[INFO] [stdout]    |             ^^^^ help: if this is intentional, prefix it with an underscore: `_bomb`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_variables)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]    Compiling intro_02 v0.1.0 (/opt/rustwide/workdir/exercises/03_ticket_v1/00_intro)
[INFO] [stderr]    Compiling scoped_threads v0.1.0 (/opt/rustwide/workdir/exercises/07_threads/04_scoped_threads)
[INFO] [stderr]    Compiling deref v0.1.0 (/opt/rustwide/workdir/exercises/04_traits/07_deref)
[INFO] [stderr]    Compiling visibility v0.1.0 (/opt/rustwide/workdir/exercises/03_ticket_v1/04_visibility)
[INFO] [stderr]    Compiling syntax v0.1.0 (/opt/rustwide/workdir/exercises/01_intro/01_syntax)
[INFO] [stderr]    Compiling common v0.1.0 (/opt/rustwide/workdir/helpers/common)
[INFO] [stderr]    Compiling clone v0.1.0 (/opt/rustwide/workdir/exercises/04_traits/11_clone)
[INFO] [stderr]    Compiling trait_bounds v0.1.0 (/opt/rustwide/workdir/exercises/04_traits/05_trait_bounds)
[INFO] [stderr]    Compiling if_let v0.1.0 (/opt/rustwide/workdir/exercises/05_ticket_v2/04_if_let)
[INFO] [stdout] warning: field `status` is never read
[INFO] [stdout]   --> exercises/04_traits/07_deref/src/lib.rs:10:5
[INFO] [stdout]    |
[INFO] [stdout]  7 | pub struct Ticket {
[INFO] [stdout]    |            ------ field in this struct
[INFO] [stdout] ...
[INFO] [stdout] 10 |     status: String,
[INFO] [stdout]    |     ^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]    Compiling heap v0.1.0 (/opt/rustwide/workdir/exercises/03_ticket_v1/09_heap)
[INFO] [stderr]    Compiling overloading v0.1.0 (/opt/rustwide/workdir/exercises/04_traits/03_operator_overloading)
[INFO] [stdout] warning: unused variable: `ticket`
[INFO] [stdout]   --> exercises/03_ticket_v1/04_visibility/src/lib.rs:47:13
[INFO] [stdout]    |
[INFO] [stdout] 47 |         let ticket = Ticket::new("A title".into(), "A description".into(), "To-Do".into());
[INFO] [stdout]    |             ^^^^^^ help: if this is intentional, prefix it with an underscore: `_ticket`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_variables)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct `Ticket` is never constructed
[INFO] [stdout]  --> exercises/03_ticket_v1/04_visibility/src/lib.rs:2:16
[INFO] [stdout]   |
[INFO] [stdout] 2 |     pub struct Ticket {
[INFO] [stdout]   |                ^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function `new` is never used
[INFO] [stdout]  --> exercises/03_ticket_v1/04_visibility/src/lib.rs:9:16
[INFO] [stdout]   |
[INFO] [stdout] 8 |     impl Ticket {
[INFO] [stdout]   |     ----------- associated function in this implementation
[INFO] [stdout] 9 |         pub fn new(title: String, description: String, status: String) -> Ticket {
[INFO] [stdout]   |                ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `should_not_be_possible` is never used
[INFO] [stdout]   --> exercises/03_ticket_v1/04_visibility/src/lib.rs:46:8
[INFO] [stdout]    |
[INFO] [stdout] 46 |     fn should_not_be_possible() {
[INFO] [stdout]    |        ^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `encapsulation_cannot_be_violated` is never used
[INFO] [stdout]   --> exercises/03_ticket_v1/04_visibility/src/lib.rs:61:8
[INFO] [stdout]    |
[INFO] [stdout] 61 |     fn encapsulation_cannot_be_violated() {
[INFO] [stdout]    |        ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field `border` is never read
[INFO] [stdout]  --> exercises/05_ticket_v2/04_if_let/src/lib.rs:3:14
[INFO] [stdout]   |
[INFO] [stdout] 3 |     Square { border: f64 },
[INFO] [stdout]   |     ------   ^^^^^^
[INFO] [stdout]   |     |
[INFO] [stdout]   |     field in this variant
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: fields `width` and `height` are never read
[INFO] [stdout]  --> exercises/05_ticket_v2/04_if_let/src/lib.rs:4:17
[INFO] [stdout]   |
[INFO] [stdout] 4 |     Rectangle { width: f64, height: f64 },
[INFO] [stdout]   |     ---------   ^^^^^       ^^^^^^
[INFO] [stdout]   |     |
[INFO] [stdout]   |     fields in this variant
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]    Compiling sized v0.1.0 (/opt/rustwide/workdir/exercises/04_traits/08_sized)
[INFO] [stderr]    Compiling match_ v0.1.0 (/opt/rustwide/workdir/exercises/05_ticket_v2/02_match)
[INFO] [stderr]    Compiling copy v0.1.0 (/opt/rustwide/workdir/exercises/04_traits/12_copy)
[INFO] [stderr]    Compiling assoc_vs_generic v0.1.0 (/opt/rustwide/workdir/exercises/04_traits/10_assoc_vs_generic)
[INFO] [stderr]    Compiling for_ v0.1.0 (/opt/rustwide/workdir/exercises/02_basic_calculator/07_for)
[INFO] [stderr]    Compiling saturating v0.1.0 (/opt/rustwide/workdir/exercises/02_basic_calculator/09_saturating)
[INFO] [stderr]    Compiling factorial v0.1.0 (/opt/rustwide/workdir/exercises/02_basic_calculator/05_factorial)
[INFO] [stdout] warning: fields `title`, `description`, and `status` are never read
[INFO] [stdout]  --> exercises/03_ticket_v1/09_heap/src/lib.rs:2:5
[INFO] [stdout]   |
[INFO] [stdout] 1 | pub struct Ticket {
[INFO] [stdout]   |            ------ fields in this struct
[INFO] [stdout] 2 |     title: String,
[INFO] [stdout]   |     ^^^^^
[INFO] [stdout] 3 |     description: String,
[INFO] [stdout]   |     ^^^^^^^^^^^
[INFO] [stdout] 4 |     status: String,
[INFO] [stdout]   |     ^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `test` profile [unoptimized + debuginfo] target(s) in 10.93s
[INFO] running `Command { std: "docker" "inspect" "1485a200308d77ed4bd443043a0ce8ee4d2fad1ee6f746bfd856bb44c422b541", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "1485a200308d77ed4bd443043a0ce8ee4d2fad1ee6f746bfd856bb44c422b541", kill_on_drop: false }`
[INFO] [stdout] 1485a200308d77ed4bd443043a0ce8ee4d2fad1ee6f746bfd856bb44c422b541
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-tc1/source:/opt/rustwide/workdir:ro,Z" "-v" "/var/lib/crater-agent-workspace/cargo-home:/opt/rustwide/cargo-home:ro,Z" "-v" "/var/lib/crater-agent-workspace/rustup-home:/opt/rustwide/rustup-home:ro,Z" "-e" "SOURCE_DIR=/opt/rustwide/workdir" "-e" "CARGO_TARGET_DIR=/opt/rustwide/target" "-e" "CARGO_INCREMENTAL=0" "-e" "RUST_BACKTRACE=full" "-e" "RUSTFLAGS=--cap-lints=warn" "-e" "RUSTDOCFLAGS=--cap-lints=warn" "-e" "CARGO_HOME=/opt/rustwide/cargo-home" "-e" "RUSTUP_HOME=/opt/rustwide/rustup-home" "-w" "/opt/rustwide/workdir" "-m" "1610612736" "--user" "0:0" "--network" "none" "ghcr.io/rust-lang/crates-build-env/linux@sha256:e90291280db7d1fac5b66fc6dad9f9662629e7365a55743daf9bdf73ebc4ea79" "/opt/rustwide/cargo-home/bin/cargo" "+1.90.0" "test" "--frozen", kill_on_drop: false }`
[INFO] [stdout] 3603d75b179b69ae9d14913b47b9126b4b4a211081b43757e539a1aaddd8c379
[INFO] running `Command { std: "docker" "start" "-a" "3603d75b179b69ae9d14913b47b9126b4b4a211081b43757e539a1aaddd8c379", kill_on_drop: false }`
[INFO] [stderr] warning: unused imports: `RecvError`, `SendError`, and `Sender`
[INFO] [stderr]  --> exercises/07_threads/09_bounded/src/lib.rs:4:39
[INFO] [stderr]   |
[INFO] [stderr] 4 | use std::sync::mpsc::{self, Receiver, RecvError, SendError, Sender, SyncSender};
[INFO] [stderr]   |                                       ^^^^^^^^^  ^^^^^^^^^  ^^^^^^
[INFO] [stderr]   |
[INFO] [stderr]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: `bounded` (lib) generated 1 warning (run `cargo fix --lib -p bounded` to apply 1 suggestion)
[INFO] [stderr] warning: unused import: `TrySendError`
[INFO] [stderr]  --> exercises/07_threads/11_locks/src/lib.rs:4:59
[INFO] [stderr]   |
[INFO] [stderr] 4 | use std::sync::mpsc::{sync_channel, Receiver, SyncSender, TrySendError};
[INFO] [stderr]   |                                                           ^^^^^^^^^^^^
[INFO] [stderr]   |
[INFO] [stderr]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: type `Command` is more private than the item `server`
[INFO] [stderr]   --> exercises/07_threads/11_locks/src/lib.rs:63:1
[INFO] [stderr]    |
[INFO] [stderr] 63 | pub fn server(receiver: Receiver<Command>) {
[INFO] [stderr]    | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ function `server` is reachable at visibility `pub`
[INFO] [stderr]    |
[INFO] [stderr] note: but type `Command` is only usable at visibility `pub(crate)`
[INFO] [stderr]   --> exercises/07_threads/11_locks/src/lib.rs:52:1
[INFO] [stderr]    |
[INFO] [stderr] 52 | enum Command {
[INFO] [stderr]    | ^^^^^^^^^^^^
[INFO] [stderr]    = note: `#[warn(private_interfaces)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: `locks` (lib) generated 2 warnings (run `cargo fix --lib -p locks` to apply 1 suggestion)
[INFO] [stderr] warning: type `Command` is more private than the item `server`
[INFO] [stderr]   --> exercises/07_threads/10_patch/src/lib.rs:75:1
[INFO] [stderr]    |
[INFO] [stderr] 75 | pub fn server(receiver: Receiver<Command>) {
[INFO] [stderr]    | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ function `server` is reachable at visibility `pub`
[INFO] [stderr]    |
[INFO] [stderr] note: but type `Command` is only usable at visibility `pub(crate)`
[INFO] [stderr]   --> exercises/07_threads/10_patch/src/lib.rs:60:1
[INFO] [stderr]    |
[INFO] [stderr] 60 | enum Command {
[INFO] [stderr]    | ^^^^^^^^^^^^
[INFO] [stderr]    = note: `#[warn(private_interfaces)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: type `Command` is more private than the item `TicketStoreClient::new`
[INFO] [stderr]   --> exercises/07_threads/08_client/src/lib.rs:14:5
[INFO] [stderr]    |
[INFO] [stderr] 14 |     pub fn new(sender: Sender<Command>) -> Self {
[INFO] [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ associated function `TicketStoreClient::new` is reachable at visibility `pub`
[INFO] [stderr]    |
[INFO] [stderr] note: but type `Command` is only usable at visibility `pub(crate)`
[INFO] [stderr]   --> exercises/07_threads/08_client/src/lib.rs:54:1
[INFO] [stderr]    |
[INFO] [stderr] 54 | enum Command {
[INFO] [stderr]    | ^^^^^^^^^^^^
[INFO] [stderr]    = note: `#[warn(private_interfaces)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: unused import: `TrySendError`
[INFO] [stderr]  --> exercises/07_threads/12_rw_lock/src/lib.rs:3:59
[INFO] [stderr]   |
[INFO] [stderr] 3 | use std::sync::mpsc::{sync_channel, Receiver, SyncSender, TrySendError};
[INFO] [stderr]   |                                                           ^^^^^^^^^^^^
[INFO] [stderr]   |
[INFO] [stderr]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: unused import: `Mutex`
[INFO] [stderr]  --> exercises/07_threads/12_rw_lock/src/lib.rs:4:22
[INFO] [stderr]   |
[INFO] [stderr] 4 | use std::sync::{Arc, Mutex, RwLock};
[INFO] [stderr]   |                      ^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: type `Command` is more private than the item `server`
[INFO] [stderr]   --> exercises/07_threads/12_rw_lock/src/lib.rs:62:1
[INFO] [stderr]    |
[INFO] [stderr] 62 | pub fn server(receiver: Receiver<Command>) {
[INFO] [stderr]    | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ function `server` is reachable at visibility `pub`
[INFO] [stderr]    |
[INFO] [stderr] note: but type `Command` is only usable at visibility `pub(crate)`
[INFO] [stderr]   --> exercises/07_threads/12_rw_lock/src/lib.rs:51:1
[INFO] [stderr]    |
[INFO] [stderr] 51 | enum Command {
[INFO] [stderr]    | ^^^^^^^^^^^^
[INFO] [stderr]    = note: `#[warn(private_interfaces)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: enum `TicketNewError` is never used
[INFO] [stderr]  --> exercises/05_ticket_v2/12_thiserror/src/lib.rs:8:6
[INFO] [stderr]   |
[INFO] [stderr] 8 | enum TicketNewError {
[INFO] [stderr]   |      ^^^^^^^^^^^^^^
[INFO] [stderr]   |
[INFO] [stderr]   = note: `#[warn(dead_code)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: struct `Ticket` is never constructed
[INFO] [stderr]   --> exercises/05_ticket_v2/12_thiserror/src/lib.rs:20:8
[INFO] [stderr]    |
[INFO] [stderr] 20 | struct Ticket {
[INFO] [stderr]    |        ^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: enum `Status` is never used
[INFO] [stderr]   --> exercises/05_ticket_v2/12_thiserror/src/lib.rs:27:6
[INFO] [stderr]    |
[INFO] [stderr] 27 | enum Status {
[INFO] [stderr]    |      ^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: associated function `new` is never used
[INFO] [stderr]   --> exercises/05_ticket_v2/12_thiserror/src/lib.rs:34:12
[INFO] [stderr]    |
[INFO] [stderr] 33 | impl Ticket {
[INFO] [stderr]    | ----------- associated function in this implementation
[INFO] [stderr] 34 |     pub fn new(
[INFO] [stderr]    |            ^^^
[INFO] [stderr] 
[INFO] [stderr] warning: unused import: `anyhow::Error`
[INFO] [stderr]  --> exercises/05_ticket_v2/11_dependencies/src/lib.rs:6:5
[INFO] [stderr]   |
[INFO] [stderr] 6 | use anyhow::Error;
[INFO] [stderr]   |     ^^^^^^^^^^^^^
[INFO] [stderr]   |
[INFO] [stderr]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: unused `Result` in tuple element 0 that must be used
[INFO] [stderr]   --> exercises/08_futures/03_runtime/src/lib.rs:18:5
[INFO] [stderr]    |
[INFO] [stderr] 18 |     tokio::join!(handle1, handle2);
[INFO] [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stderr]    = note: `#[warn(unused_must_use)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: unused `Result` in tuple element 1 that must be used
[INFO] [stderr]   --> exercises/08_futures/03_runtime/src/lib.rs:18:5
[INFO] [stderr]    |
[INFO] [stderr] 18 |     tokio::join!(handle1, handle2);
[INFO] [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stderr] 
[INFO] [stderr] warning: `patch` (lib) generated 1 warning
[INFO] [stderr] warning: `client` (lib) generated 1 warning
[INFO] [stderr] warning: `rwlock` (lib) generated 3 warnings (run `cargo fix --lib -p rwlock` to apply 2 suggestions)
[INFO] [stderr] warning: `thiserror_` (lib) generated 4 warnings
[INFO] [stderr] warning: `deps` (lib) generated 1 warning (run `cargo fix --lib -p deps` to apply 1 suggestion)
[INFO] [stderr] warning: `runtime` (lib) generated 2 warnings
[INFO] [stderr] warning: function `spawner` is never used
[INFO] [stderr]  --> exercises/08_futures/04_future/src/lib.rs:8:4
[INFO] [stderr]   |
[INFO] [stderr] 8 | fn spawner() {
[INFO] [stderr]   |    ^^^^^^^
[INFO] [stderr]   |
[INFO] [stderr]   = note: `#[warn(dead_code)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: function `example` is never used
[INFO] [stderr]   --> exercises/08_futures/04_future/src/lib.rs:12:10
[INFO] [stderr]    |
[INFO] [stderr] 12 | async fn example() {
[INFO] [stderr]    |          ^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: hiding a lifetime that's elided elsewhere is confusing
[INFO] [stderr]   --> exercises/06_ticket_management/05_iter/src/lib.rs:38:17
[INFO] [stderr]    |
[INFO] [stderr] 38 |     pub fn iter(&self) -> std::slice::Iter<Ticket> {
[INFO] [stderr]    |                 ^^^^^     ------------------------ the same lifetime is hidden here
[INFO] [stderr]    |                 |
[INFO] [stderr]    |                 the lifetime is elided here
[INFO] [stderr]    |
[INFO] [stderr]    = help: the same lifetime is referred to in inconsistent ways, making the signature confusing
[INFO] [stderr]    = note: `#[warn(mismatched_lifetime_syntaxes)]` on by default
[INFO] [stderr] help: use `'_` for type paths
[INFO] [stderr]    |
[INFO] [stderr] 38 |     pub fn iter(&self) -> std::slice::Iter<'_, Ticket> {
[INFO] [stderr]    |                                            +++
[INFO] [stderr] 
[INFO] [stderr] warning: hiding a lifetime that's elided elsewhere is confusing
[INFO] [stderr]   --> exercises/06_ticket_management/06_lifetimes/src/lib.rs:44:17
[INFO] [stderr]    |
[INFO] [stderr] 44 |     pub fn iter(&self) -> std::slice::Iter<Ticket> {
[INFO] [stderr]    |                 ^^^^^     ------------------------ the same lifetime is hidden here
[INFO] [stderr]    |                 |
[INFO] [stderr]    |                 the lifetime is elided here
[INFO] [stderr]    |
[INFO] [stderr]    = help: the same lifetime is referred to in inconsistent ways, making the signature confusing
[INFO] [stderr]    = note: `#[warn(mismatched_lifetime_syntaxes)]` on by default
[INFO] [stderr] help: use `'_` for type paths
[INFO] [stderr]    |
[INFO] [stderr] 44 |     pub fn iter(&self) -> std::slice::Iter<'_, Ticket> {
[INFO] [stderr]    |                                            +++
[INFO] [stderr] 
[INFO] [stderr] warning: `future` (lib) generated 2 warnings
[INFO] [stderr] warning: `iter` (lib) generated 1 warning
[INFO] [stderr] warning: `lifetime` (lib) generated 1 warning
[INFO] [stderr] warning: struct `Ticket` is never constructed
[INFO] [stderr]  --> exercises/05_ticket_v2/01_enum/src/lib.rs:7:8
[INFO] [stderr]   |
[INFO] [stderr] 7 | struct Ticket {
[INFO] [stderr]   |        ^^^^^^
[INFO] [stderr]   |
[INFO] [stderr]   = note: `#[warn(dead_code)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: enum `Status` is never used
[INFO] [stderr]   --> exercises/05_ticket_v2/01_enum/src/lib.rs:14:6
[INFO] [stderr]    |
[INFO] [stderr] 14 | enum Status {
[INFO] [stderr]    |      ^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: associated items `new`, `title`, `description`, and `status` are never used
[INFO] [stderr]   --> exercises/05_ticket_v2/01_enum/src/lib.rs:22:12
[INFO] [stderr]    |
[INFO] [stderr] 21 | impl Ticket {
[INFO] [stderr]    | ----------- associated items in this implementation
[INFO] [stderr] 22 |     pub fn new(title: String, description: String, status: Status) -> Ticket {
[INFO] [stderr]    |            ^^^
[INFO] [stderr] ...
[INFO] [stderr] 43 |     pub fn title(&self) -> &String {
[INFO] [stderr]    |            ^^^^^
[INFO] [stderr] ...
[INFO] [stderr] 47 |     pub fn description(&self) -> &String {
[INFO] [stderr]    |            ^^^^^^^^^^^
[INFO] [stderr] ...
[INFO] [stderr] 51 |     pub fn status(&self) -> &Status {
[INFO] [stderr]    |            ^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: struct `Ticket` is never constructed
[INFO] [stderr]  --> exercises/04_traits/03_operator_overloading/src/lib.rs:3:8
[INFO] [stderr]   |
[INFO] [stderr] 3 | struct Ticket {
[INFO] [stderr]   |        ^^^^^^
[INFO] [stderr]   |
[INFO] [stderr]   = note: `#[warn(dead_code)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: struct `Ticket` is never constructed
[INFO] [stderr]  --> exercises/05_ticket_v2/06_fallibility/src/lib.rs:5:8
[INFO] [stderr]   |
[INFO] [stderr] 5 | struct Ticket {
[INFO] [stderr]   |        ^^^^^^
[INFO] [stderr]   |
[INFO] [stderr]   = note: `#[warn(dead_code)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: enum `Status` is never used
[INFO] [stderr]   --> exercises/05_ticket_v2/06_fallibility/src/lib.rs:12:6
[INFO] [stderr]    |
[INFO] [stderr] 12 | enum Status {
[INFO] [stderr]    |      ^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: associated function `new` is never used
[INFO] [stderr]   --> exercises/05_ticket_v2/06_fallibility/src/lib.rs:19:12
[INFO] [stderr]    |
[INFO] [stderr] 18 | impl Ticket {
[INFO] [stderr]    | ----------- associated function in this implementation
[INFO] [stderr] 19 |     pub fn new(title: String, description: String, status: Status) -> Result<Ticket, String> {
[INFO] [stderr]    |            ^^^
[INFO] [stderr] 
[INFO] [stderr] warning: enum `Shape` is never used
[INFO] [stderr]  --> exercises/05_ticket_v2/02_match/src/lib.rs:1:6
[INFO] [stderr]   |
[INFO] [stderr] 1 | enum Shape {
[INFO] [stderr]   |      ^^^^^
[INFO] [stderr]   |
[INFO] [stderr]   = note: `#[warn(dead_code)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: method `n_sides` is never used
[INFO] [stderr]   --> exercises/05_ticket_v2/02_match/src/lib.rs:11:12
[INFO] [stderr]    |
[INFO] [stderr]  9 | impl Shape {
[INFO] [stderr]    | ---------- method in this implementation
[INFO] [stderr] 10 |     // TODO: Implement the `n_sides` method using a `match`.
[INFO] [stderr] 11 |     pub fn n_sides(&self) -> u8 {
[INFO] [stderr]    |            ^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: function `intro` is never used
[INFO] [stderr]  --> exercises/04_traits/00_intro/src/lib.rs:1:4
[INFO] [stderr]   |
[INFO] [stderr] 1 | fn intro() -> &'static str {
[INFO] [stderr]   |    ^^^^^
[INFO] [stderr]   |
[INFO] [stderr]   = note: `#[warn(dead_code)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: struct `Ticket` is never constructed
[INFO] [stderr]  --> exercises/05_ticket_v2/05_nullability/src/lib.rs:4:8
[INFO] [stderr]   |
[INFO] [stderr] 4 | struct Ticket {
[INFO] [stderr]   |        ^^^^^^
[INFO] [stderr]   |
[INFO] [stderr]   = note: `#[warn(dead_code)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: enum `Status` is never used
[INFO] [stderr]   --> exercises/05_ticket_v2/05_nullability/src/lib.rs:11:6
[INFO] [stderr]    |
[INFO] [stderr] 11 | enum Status {
[INFO] [stderr]    |      ^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: associated items `new` and `assigned_to` are never used
[INFO] [stderr]   --> exercises/05_ticket_v2/05_nullability/src/lib.rs:18:12
[INFO] [stderr]    |
[INFO] [stderr] 17 | impl Ticket {
[INFO] [stderr]    | ----------- associated items in this implementation
[INFO] [stderr] 18 |     pub fn new(title: String, description: String, status: Status) -> Ticket {
[INFO] [stderr]    |            ^^^
[INFO] [stderr] ...
[INFO] [stderr] 38 |     pub fn assigned_to(&self) -> Option<&String> {
[INFO] [stderr]    |            ^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: function `intro` is never used
[INFO] [stderr]  --> exercises/06_ticket_management/00_intro/src/lib.rs:1:4
[INFO] [stderr]   |
[INFO] [stderr] 1 | fn intro() -> &'static str {
[INFO] [stderr]   |    ^^^^^
[INFO] [stderr]   |
[INFO] [stderr]   = note: `#[warn(dead_code)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: enum `Status` is never used
[INFO] [stderr]  --> exercises/05_ticket_v2/13_try_from/src/lib.rs:5:6
[INFO] [stderr]   |
[INFO] [stderr] 5 | enum Status {
[INFO] [stderr]   |      ^^^^^^
[INFO] [stderr]   |
[INFO] [stderr]   = note: `#[warn(dead_code)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: `enum_` (lib) generated 3 warnings
[INFO] [stderr] warning: `overloading` (lib) generated 1 warning
[INFO] [stderr] warning: `fallibility` (lib) generated 3 warnings
[INFO] [stderr] warning: `match_` (lib) generated 2 warnings
[INFO] [stderr] warning: `intro_03` (lib) generated 1 warning
[INFO] [stderr] warning: `nullability` (lib) generated 3 warnings
[INFO] [stderr] warning: `intro_05` (lib) generated 1 warning
[INFO] [stderr] warning: `tryfrom` (lib) generated 1 warning
[INFO] [stderr] warning: function `intro` is never used
[INFO] [stderr]  --> exercises/07_threads/00_intro/src/lib.rs:1:4
[INFO] [stderr]   |
[INFO] [stderr] 1 | fn intro() -> &'static str {
[INFO] [stderr]   |    ^^^^^
[INFO] [stderr]   |
[INFO] [stderr]   = note: `#[warn(dead_code)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: field `status` is never read
[INFO] [stderr]   --> exercises/04_traits/07_deref/src/lib.rs:10:5
[INFO] [stderr]    |
[INFO] [stderr]  7 | pub struct Ticket {
[INFO] [stderr]    |            ------ field in this struct
[INFO] [stderr] ...
[INFO] [stderr] 10 |     status: String,
[INFO] [stderr]    |     ^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(dead_code)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: fields `title`, `description`, and `status` are never read
[INFO] [stderr]  --> exercises/03_ticket_v1/10_references_in_memory/src/lib.rs:2:5
[INFO] [stderr]   |
[INFO] [stderr] 1 | pub struct Ticket {
[INFO] [stderr]   |            ------ fields in this struct
[INFO] [stderr] 2 |     title: String,
[INFO] [stderr]   |     ^^^^^
[INFO] [stderr] 3 |     description: String,
[INFO] [stderr]   |     ^^^^^^^^^^^
[INFO] [stderr] 4 |     status: String,
[INFO] [stderr]   |     ^^^^^^
[INFO] [stderr]   |
[INFO] [stderr]   = note: `#[warn(dead_code)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: function `outro` is never used
[INFO] [stderr]  --> exercises/03_ticket_v1/11_destructor/src/lib.rs:4:4
[INFO] [stderr]   |
[INFO] [stderr] 4 | fn outro() -> &'static str {
[INFO] [stderr]   |    ^^^^^
[INFO] [stderr]   |
[INFO] [stderr]   = note: `#[warn(dead_code)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: `intro_07` (lib) generated 1 warning
[INFO] [stderr] warning: `deref` (lib) generated 1 warning
[INFO] [stderr] warning: `references_in_memory` (lib) generated 1 warning
[INFO] [stderr] warning: `destructor` (lib) generated 1 warning
[INFO] [stderr] warning: function `easy_ticket` is never used
[INFO] [stderr]  --> exercises/05_ticket_v2/07_unwrap/src/lib.rs:4:4
[INFO] [stderr]   |
[INFO] [stderr] 4 | fn easy_ticket(title: String, description: String, status: Status) -> Ticket {
[INFO] [stderr]   |    ^^^^^^^^^^^
[INFO] [stderr]   |
[INFO] [stderr]   = note: `#[warn(dead_code)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: struct `Ticket` is never constructed
[INFO] [stderr]   --> exercises/05_ticket_v2/07_unwrap/src/lib.rs:19:8
[INFO] [stderr]    |
[INFO] [stderr] 19 | struct Ticket {
[INFO] [stderr]    |        ^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: enum `Status` is never used
[INFO] [stderr]   --> exercises/05_ticket_v2/07_unwrap/src/lib.rs:26:6
[INFO] [stderr]    |
[INFO] [stderr] 26 | enum Status {
[INFO] [stderr]    |      ^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: associated function `new` is never used
[INFO] [stderr]   --> exercises/05_ticket_v2/07_unwrap/src/lib.rs:33:12
[INFO] [stderr]    |
[INFO] [stderr] 32 | impl Ticket {
[INFO] [stderr]    | ----------- associated function in this implementation
[INFO] [stderr] 33 |     pub fn new(title: String, description: String, status: Status) -> Result<Ticket, String> {
[INFO] [stderr]    |            ^^^
[INFO] [stderr] 
[INFO] [stderr] warning: trait `IsEven` is never used
[INFO] [stderr]  --> exercises/04_traits/01_trait/src/lib.rs:6:7
[INFO] [stderr]   |
[INFO] [stderr] 6 | trait IsEven {
[INFO] [stderr]   |       ^^^^^^
[INFO] [stderr]   |
[INFO] [stderr]   = note: `#[warn(dead_code)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: function `intro` is never used
[INFO] [stderr]  --> exercises/08_futures/00_intro/src/lib.rs:1:4
[INFO] [stderr]   |
[INFO] [stderr] 1 | fn intro() -> &'static str {
[INFO] [stderr]   |    ^^^^^
[INFO] [stderr]   |
[INFO] [stderr]   = note: `#[warn(dead_code)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: function `intro` is never used
[INFO] [stderr]  --> exercises/05_ticket_v2/00_intro/src/lib.rs:1:4
[INFO] [stderr]   |
[INFO] [stderr] 1 | fn intro() -> &'static str {
[INFO] [stderr]   |    ^^^^^
[INFO] [stderr]   |
[INFO] [stderr]   = note: `#[warn(dead_code)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: enum `Shape` is never used
[INFO] [stderr]  --> exercises/05_ticket_v2/04_if_let/src/lib.rs:1:6
[INFO] [stderr]   |
[INFO] [stderr] 1 | enum Shape {
[INFO] [stderr]   |      ^^^^^
[INFO] [stderr]   |
[INFO] [stderr]   = note: `#[warn(dead_code)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: method `radius` is never used
[INFO] [stderr]   --> exercises/05_ticket_v2/04_if_let/src/lib.rs:10:12
[INFO] [stderr]    |
[INFO] [stderr]  7 | impl Shape {
[INFO] [stderr]    | ---------- method in this implementation
[INFO] [stderr] ...
[INFO] [stderr] 10 |     pub fn radius(&self) -> f64 {
[INFO] [stderr]    |            ^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: struct `Ticket` is never constructed
[INFO] [stderr]  --> exercises/05_ticket_v2/03_variants_with_data/src/lib.rs:6:8
[INFO] [stderr]   |
[INFO] [stderr] 6 | struct Ticket {
[INFO] [stderr]   |        ^^^^^^
[INFO] [stderr]   |
[INFO] [stderr]   = note: `#[warn(dead_code)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: enum `Status` is never used
[INFO] [stderr]   --> exercises/05_ticket_v2/03_variants_with_data/src/lib.rs:13:6
[INFO] [stderr]    |
[INFO] [stderr] 13 | enum Status {
[INFO] [stderr]    |      ^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: associated items `new` and `assigned_to` are never used
[INFO] [stderr]   --> exercises/05_ticket_v2/03_variants_with_data/src/lib.rs:20:12
[INFO] [stderr]    |
[INFO] [stderr] 19 | impl Ticket {
[INFO] [stderr]    | ----------- associated items in this implementation
[INFO] [stderr] 20 |     pub fn new(title: String, description: String, status: Status) -> Ticket {
[INFO] [stderr]    |            ^^^
[INFO] [stderr] ...
[INFO] [stderr] 40 |     pub fn assigned_to(&self) -> &str {
[INFO] [stderr]    |            ^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: struct `Ticket` is never constructed
[INFO] [stderr]   --> exercises/04_traits/04_derive/src/lib.rs:12:8
[INFO] [stderr]    |
[INFO] [stderr] 12 | struct Ticket {
[INFO] [stderr]    |        ^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(dead_code)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: trait `Power` is never used
[INFO] [stderr]   --> exercises/04_traits/10_assoc_vs_generic/src/lib.rs:15:7
[INFO] [stderr]    |
[INFO] [stderr] 15 | trait Power<Rhs = Self> {
[INFO] [stderr]    |       ^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(dead_code)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: `unwrap` (lib) generated 4 warnings
[INFO] [stderr] warning: `trait_` (lib) generated 1 warning
[INFO] [stderr] warning: `intro_08` (lib) generated 1 warning
[INFO] [stderr] warning: `intro_04` (lib) generated 1 warning
[INFO] [stderr] warning: `if_let` (lib) generated 2 warnings
[INFO] [stderr] warning: `variants_with_data` (lib) generated 3 warnings
[INFO] [stderr] warning: `derives` (lib) generated 1 warning
[INFO] [stderr] warning: `assoc_vs_generic` (lib) generated 1 warning
[INFO] [stderr] warning: function `outro` is never used
[INFO] [stderr]  --> exercises/07_threads/14_sync/src/lib.rs:2:4
[INFO] [stderr]   |
[INFO] [stderr] 2 | fn outro() -> &'static str {
[INFO] [stderr]   |    ^^^^^
[INFO] [stderr]   |
[INFO] [stderr]   = note: `#[warn(dead_code)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: struct `Ticket` is never constructed
[INFO] [stderr]  --> exercises/03_ticket_v1/04_visibility/src/lib.rs:2:16
[INFO] [stderr]   |
[INFO] [stderr] 2 |     pub struct Ticket {
[INFO] [stderr]   |                ^^^^^^
[INFO] [stderr]   |
[INFO] [stderr]   = note: `#[warn(dead_code)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: associated function `new` is never used
[INFO] [stderr]  --> exercises/03_ticket_v1/04_visibility/src/lib.rs:9:16
[INFO] [stderr]   |
[INFO] [stderr] 8 |     impl Ticket {
[INFO] [stderr]   |     ----------- associated function in this implementation
[INFO] [stderr] 9 |         pub fn new(title: String, description: String, status: String) -> Ticket {
[INFO] [stderr]   |                ^^^
[INFO] [stderr] 
[INFO] [stderr] warning: field `value` is never read
[INFO] [stderr]  --> exercises/07_threads/06_interior_mutability/src/lib.rs:8:5
[INFO] [stderr]   |
[INFO] [stderr] 7 | pub struct DropTracker<T> {
[INFO] [stderr]   |            ----------- field in this struct
[INFO] [stderr] 8 |     value: T,
[INFO] [stderr]   |     ^^^^^
[INFO] [stderr]   |
[INFO] [stderr]   = note: `#[warn(dead_code)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: struct `DropBomb` is never constructed
[INFO] [stderr]  --> exercises/04_traits/13_drop/src/lib.rs:5:8
[INFO] [stderr]   |
[INFO] [stderr] 5 | struct DropBomb {
[INFO] [stderr]   |        ^^^^^^^^
[INFO] [stderr]   |
[INFO] [stderr]   = note: `#[warn(dead_code)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: associated items `new` and `defuse` are never used
[INFO] [stderr]   --> exercises/04_traits/13_drop/src/lib.rs:10:8
[INFO] [stderr]    |
[INFO] [stderr]  9 | impl DropBomb {
[INFO] [stderr]    | ------------- associated items in this implementation
[INFO] [stderr] 10 |     fn new() -> Self {
[INFO] [stderr]    |        ^^^
[INFO] [stderr] ...
[INFO] [stderr] 14 |     fn defuse(&mut self) {
[INFO] [stderr]    |        ^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `wrapping`
[INFO] [stderr]   --> exercises/04_traits/09_from/src/lib.rs:14:9
[INFO] [stderr]    |
[INFO] [stderr] 14 |     let wrapping: WrappingU32 = 42.into();
[INFO] [stderr]    |         ^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_wrapping`
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(unused_variables)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `wrapping`
[INFO] [stderr]   --> exercises/04_traits/09_from/src/lib.rs:15:9
[INFO] [stderr]    |
[INFO] [stderr] 15 |     let wrapping = WrappingU32::from(42);
[INFO] [stderr]    |         ^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_wrapping`
[INFO] [stderr] 
[INFO] [stderr] warning: field `value` is never read
[INFO] [stderr]  --> exercises/04_traits/09_from/src/lib.rs:4:5
[INFO] [stderr]   |
[INFO] [stderr] 3 | pub struct WrappingU32 {
[INFO] [stderr]   |            ----------- field in this struct
[INFO] [stderr] 4 |     value: u32,
[INFO] [stderr]   |     ^^^^^
[INFO] [stderr]   |
[INFO] [stderr]   = note: `#[warn(dead_code)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: function `example` is never used
[INFO] [stderr]   --> exercises/04_traits/09_from/src/lib.rs:13:4
[INFO] [stderr]    |
[INFO] [stderr] 13 | fn example() {
[INFO] [stderr]    |    ^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: enum `TicketNewError` is never used
[INFO] [stderr]  --> exercises/05_ticket_v2/08_error_enums/src/lib.rs:5:6
[INFO] [stderr]   |
[INFO] [stderr] 5 | enum TicketNewError {
[INFO] [stderr]   |      ^^^^^^^^^^^^^^
[INFO] [stderr]   |
[INFO] [stderr]   = note: `#[warn(dead_code)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: function `easy_ticket` is never used
[INFO] [stderr]   --> exercises/05_ticket_v2/08_error_enums/src/lib.rs:14:4
[INFO] [stderr]    |
[INFO] [stderr] 14 | fn easy_ticket(title: String, description: String, status: Status) -> Ticket {
[INFO] [stderr]    |    ^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: struct `Ticket` is never constructed
[INFO] [stderr]   --> exercises/05_ticket_v2/08_error_enums/src/lib.rs:27:8
[INFO] [stderr]    |
[INFO] [stderr] 27 | struct Ticket {
[INFO] [stderr]    |        ^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: enum `Status` is never used
[INFO] [stderr]   --> exercises/05_ticket_v2/08_error_enums/src/lib.rs:34:6
[INFO] [stderr]    |
[INFO] [stderr] 34 | enum Status {
[INFO] [stderr]    |      ^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: associated function `new` is never used
[INFO] [stderr]   --> exercises/05_ticket_v2/08_error_enums/src/lib.rs:41:12
[INFO] [stderr]    |
[INFO] [stderr] 40 | impl Ticket {
[INFO] [stderr]    | ----------- associated function in this implementation
[INFO] [stderr] 41 |     pub fn new(
[INFO] [stderr]    |            ^^^
[INFO] [stderr] 
[INFO] [stderr] warning: fields `title`, `description`, and `status` are never read
[INFO] [stderr]  --> exercises/03_ticket_v1/09_heap/src/lib.rs:2:5
[INFO] [stderr]   |
[INFO] [stderr] 1 | pub struct Ticket {
[INFO] [stderr]   |            ------ fields in this struct
[INFO] [stderr] 2 |     title: String,
[INFO] [stderr]   |     ^^^^^
[INFO] [stderr] 3 |     description: String,
[INFO] [stderr]   |     ^^^^^^^^^^^
[INFO] [stderr] 4 |     status: String,
[INFO] [stderr]   |     ^^^^^^
[INFO] [stderr]   |
[INFO] [stderr]   = note: `#[warn(dead_code)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: `sync` (lib) generated 1 warning
[INFO] [stderr] warning: `visibility` (lib) generated 2 warnings
[INFO] [stderr] warning: `interior_mutability` (lib) generated 1 warning
[INFO] [stderr] warning: `drop` (lib) generated 2 warnings
[INFO] [stderr] warning: `from` (lib) generated 4 warnings
[INFO] [stderr] warning: `error_enums` (lib) generated 5 warnings
[INFO] [stderr] warning: `heap` (lib) generated 1 warning
[INFO] [stderr] warning: unused import: `write`
[INFO] [stderr]  --> exercises/05_ticket_v2/09_error_trait/src/lib.rs:7:16
[INFO] [stderr]   |
[INFO] [stderr] 7 | use std::fmt::{write, Display};
[INFO] [stderr]   |                ^^^^^
[INFO] [stderr]   |
[INFO] [stderr]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: enum `TicketNewError` is never used
[INFO] [stderr]   --> exercises/05_ticket_v2/09_error_trait/src/lib.rs:10:6
[INFO] [stderr]    |
[INFO] [stderr] 10 | enum TicketNewError {
[INFO] [stderr]    |      ^^^^^^^^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(dead_code)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: function `easy_ticket` is never used
[INFO] [stderr]   --> exercises/05_ticket_v2/09_error_trait/src/lib.rs:30:4
[INFO] [stderr]    |
[INFO] [stderr] 30 | fn easy_ticket(title: String, description: String, status: Status) -> Ticket {
[INFO] [stderr]    |    ^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: struct `Ticket` is never constructed
[INFO] [stderr]   --> exercises/05_ticket_v2/09_error_trait/src/lib.rs:43:8
[INFO] [stderr]    |
[INFO] [stderr] 43 | struct Ticket {
[INFO] [stderr]    |        ^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: enum `Status` is never used
[INFO] [stderr]   --> exercises/05_ticket_v2/09_error_trait/src/lib.rs:50:6
[INFO] [stderr]    |
[INFO] [stderr] 50 | enum Status {
[INFO] [stderr]    |      ^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: associated function `new` is never used
[INFO] [stderr]   --> exercises/05_ticket_v2/09_error_trait/src/lib.rs:57:12
[INFO] [stderr]    |
[INFO] [stderr] 56 | impl Ticket {
[INFO] [stderr]    | ----------- associated function in this implementation
[INFO] [stderr] 57 |     pub fn new(
[INFO] [stderr]    |            ^^^
[INFO] [stderr] 
[INFO] [stderr] warning: `error_trait` (lib) generated 6 warnings (run `cargo fix --lib -p error_trait` to apply 1 suggestion)
[INFO] [stderr] warning: variants `InProgress` and `Done` are never constructed
[INFO] [stderr]   --> exercises/05_ticket_v2/09_error_trait/src/lib.rs:52:5
[INFO] [stderr]    |
[INFO] [stderr] 50 | enum Status {
[INFO] [stderr]    |      ------ variants in this enum
[INFO] [stderr] 51 |     ToDo,
[INFO] [stderr] 52 |     InProgress { assigned_to: String },
[INFO] [stderr]    |     ^^^^^^^^^^
[INFO] [stderr] 53 |     Done,
[INFO] [stderr]    |     ^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: `Status` has derived impls for the traits `Clone` and `Debug`, but these are intentionally ignored during dead code analysis
[INFO] [stderr]    = note: `#[warn(dead_code)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: `error_trait` (lib test) generated 2 warnings (1 duplicate)
[INFO] [stderr] warning: variants `InProgress` and `Done` are never constructed
[INFO] [stderr]   --> exercises/05_ticket_v2/12_thiserror/src/lib.rs:29:5
[INFO] [stderr]    |
[INFO] [stderr] 27 | enum Status {
[INFO] [stderr]    |      ------ variants in this enum
[INFO] [stderr] 28 |     ToDo,
[INFO] [stderr] 29 |     InProgress { assigned_to: String },
[INFO] [stderr]    |     ^^^^^^^^^^
[INFO] [stderr] 30 |     Done,
[INFO] [stderr]    |     ^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: `Status` has derived impls for the traits `Clone` and `Debug`, but these are intentionally ignored during dead code analysis
[INFO] [stderr]    = note: `#[warn(dead_code)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: `bounded` (lib test) generated 1 warning (1 duplicate)
[INFO] [stderr] warning: `thiserror_` (lib test) generated 1 warning
[INFO] [stderr] warning: `runtime` (lib test) generated 2 warnings (2 duplicates)
[INFO] [stderr] warning: `deps` (lib test) generated 1 warning (1 duplicate)
[INFO] [stderr] warning: `future` (lib test) generated 2 warnings (2 duplicates)
[INFO] [stderr] warning: unused variable: `i`
[INFO] [stderr]    --> exercises/06_ticket_management/16_btreemap/src/lib.rs:119:13
[INFO] [stderr]     |
[INFO] [stderr] 119 |         for i in 0..n_tickets {
[INFO] [stderr]     |             ^ help: if this is intentional, prefix it with an underscore: `_i`
[INFO] [stderr]     |
[INFO] [stderr]     = note: `#[warn(unused_variables)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `ticket2`
[INFO] [stderr]   --> exercises/06_ticket_management/12_two_states/src/lib.rs:91:13
[INFO] [stderr]    |
[INFO] [stderr] 91 |         let ticket2 = store.get(id2).unwrap();
[INFO] [stderr]    |             ^^^^^^^ help: if this is intentional, prefix it with an underscore: `_ticket2`
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(unused_variables)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `ticket2`
[INFO] [stderr]    --> exercises/06_ticket_management/13_index/src/lib.rs:105:13
[INFO] [stderr]     |
[INFO] [stderr] 105 |         let ticket2 = &store[&id2];
[INFO] [stderr]     |             ^^^^^^^ help: if this is intentional, prefix it with an underscore: `_ticket2`
[INFO] [stderr]     |
[INFO] [stderr]     = note: `#[warn(unused_variables)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: `btreemap` (lib test) generated 1 warning
[INFO] [stderr] warning: `lifetime` (lib test) generated 1 warning (1 duplicate)
[INFO] [stderr] warning: `client` (lib test) generated 1 warning (1 duplicate)
[INFO] [stderr] warning: `two_states` (lib test) generated 1 warning
[INFO] [stderr] warning: `index` (lib test) generated 1 warning
[INFO] [stderr] warning: `patch` (lib test) generated 1 warning (1 duplicate)
[INFO] [stderr] warning: `rwlock` (lib test) generated 3 warnings (3 duplicates)
[INFO] [stderr] warning: field `0` is never read
[INFO] [stderr]  --> exercises/05_ticket_v2/08_error_enums/src/lib.rs:7:22
[INFO] [stderr]   |
[INFO] [stderr] 7 |     DescriptionError(String),
[INFO] [stderr]   |     ---------------- ^^^^^^
[INFO] [stderr]   |     |
[INFO] [stderr]   |     field in this variant
[INFO] [stderr]   |
[INFO] [stderr]   = note: `TicketNewError` has a derived impl for the trait `Debug`, but this is intentionally ignored during dead code analysis
[INFO] [stderr]   = note: `#[warn(dead_code)]` on by default
[INFO] [stderr] help: consider changing the field to be of unit type to suppress this warning while preserving the field numbering, or remove the field
[INFO] [stderr]   |
[INFO] [stderr] 7 -     DescriptionError(String),
[INFO] [stderr] 7 +     DescriptionError(()),
[INFO] [stderr]   |
[INFO] [stderr] 
[INFO] [stderr] warning: variants `InProgress` and `Done` are never constructed
[INFO] [stderr]   --> exercises/05_ticket_v2/08_error_enums/src/lib.rs:36:5
[INFO] [stderr]    |
[INFO] [stderr] 34 | enum Status {
[INFO] [stderr]    |      ------ variants in this enum
[INFO] [stderr] 35 |     ToDo,
[INFO] [stderr] 36 |     InProgress { assigned_to: String },
[INFO] [stderr]    |     ^^^^^^^^^^
[INFO] [stderr] 37 |     Done,
[INFO] [stderr]    |     ^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: `Status` has derived impls for the traits `Clone` and `Debug`, but these are intentionally ignored during dead code analysis
[INFO] [stderr] 
[INFO] [stderr] warning: variants `InProgress` and `Done` are never constructed
[INFO] [stderr]   --> exercises/05_ticket_v2/07_unwrap/src/lib.rs:28:5
[INFO] [stderr]    |
[INFO] [stderr] 26 | enum Status {
[INFO] [stderr]    |      ------ variants in this enum
[INFO] [stderr] 27 |     ToDo,
[INFO] [stderr] 28 |     InProgress { assigned_to: String },
[INFO] [stderr]    |     ^^^^^^^^^^
[INFO] [stderr] 29 |     Done,
[INFO] [stderr]    |     ^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: `Status` has derived impls for the traits `Clone` and `Debug`, but these are intentionally ignored during dead code analysis
[INFO] [stderr]    = note: `#[warn(dead_code)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: associated items `new`, `title`, `description`, and `status` are never used
[INFO] [stderr]   --> exercises/05_ticket_v2/01_enum/src/lib.rs:22:12
[INFO] [stderr]    |
[INFO] [stderr] 21 | impl Ticket {
[INFO] [stderr]    | ----------- associated items in this implementation
[INFO] [stderr] 22 |     pub fn new(title: String, description: String, status: Status) -> Ticket {
[INFO] [stderr]    |            ^^^
[INFO] [stderr] ...
[INFO] [stderr] 43 |     pub fn title(&self) -> &String {
[INFO] [stderr]    |            ^^^^^
[INFO] [stderr] ...
[INFO] [stderr] 47 |     pub fn description(&self) -> &String {
[INFO] [stderr]    |            ^^^^^^^^^^^
[INFO] [stderr] ...
[INFO] [stderr] 51 |     pub fn status(&self) -> &Status {
[INFO] [stderr]    |            ^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(dead_code)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: variants `InProgress` and `Done` are never constructed
[INFO] [stderr]   --> exercises/05_ticket_v2/06_fallibility/src/lib.rs:14:5
[INFO] [stderr]    |
[INFO] [stderr] 12 | enum Status {
[INFO] [stderr]    |      ------ variants in this enum
[INFO] [stderr] 13 |     ToDo,
[INFO] [stderr] 14 |     InProgress { assigned_to: String },
[INFO] [stderr]    |     ^^^^^^^^^^
[INFO] [stderr] 15 |     Done,
[INFO] [stderr]    |     ^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: `Status` has a derived impl for the trait `Debug`, but this is intentionally ignored during dead code analysis
[INFO] [stderr]    = note: `#[warn(dead_code)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: `locks` (lib test) generated 2 warnings (2 duplicates)
[INFO] [stderr] warning: `iter` (lib test) generated 1 warning (1 duplicate)
[INFO] [stderr] warning: `error_enums` (lib test) generated 2 warnings
[INFO] [stderr] warning: `unwrap` (lib test) generated 1 warning
[INFO] [stderr] warning: `enum_` (lib test) generated 1 warning
[INFO] [stderr] warning: `fallibility` (lib test) generated 1 warning
[INFO] [stderr] warning: unused variable: `bomb`
[INFO] [stderr]   --> exercises/04_traits/13_drop/src/lib.rs:34:13
[INFO] [stderr]    |
[INFO] [stderr] 34 |         let bomb = DropBomb::new();
[INFO] [stderr]    |             ^^^^ help: if this is intentional, prefix it with an underscore: `_bomb`
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(unused_variables)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `a`
[INFO] [stderr]   --> exercises/07_threads/06_interior_mutability/src/lib.rs:40:17
[INFO] [stderr]    |
[INFO] [stderr] 40 |             let a = DropTracker::new(5, Rc::clone(&counter));
[INFO] [stderr]    |                 ^ help: if this is intentional, prefix it with an underscore: `_a`
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(unused_variables)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `b`
[INFO] [stderr]   --> exercises/07_threads/06_interior_mutability/src/lib.rs:41:17
[INFO] [stderr]    |
[INFO] [stderr] 41 |             let b = DropTracker::new(6, Rc::clone(&counter));
[INFO] [stderr]    |                 ^ help: if this is intentional, prefix it with an underscore: `_b`
[INFO] [stderr] 
[INFO] [stderr] warning: `deref` (lib test) generated 1 warning (1 duplicate)
[INFO] [stderr] warning: `drop` (lib test) generated 1 warning
[INFO] [stderr] warning: `heap` (lib test) generated 1 warning (1 duplicate)
[INFO] [stderr] warning: `interior_mutability` (lib test) generated 3 warnings (1 duplicate)
[INFO] [stderr] warning: `from` (lib test) generated 4 warnings (4 duplicates)
[INFO] [stderr] warning: `references_in_memory` (lib test) generated 1 warning (1 duplicate)
[INFO] [stderr] warning: field `border` is never read
[INFO] [stderr]  --> exercises/05_ticket_v2/04_if_let/src/lib.rs:3:14
[INFO] [stderr]   |
[INFO] [stderr] 3 |     Square { border: f64 },
[INFO] [stderr]   |     ------   ^^^^^^
[INFO] [stderr]   |     |
[INFO] [stderr]   |     field in this variant
[INFO] [stderr]   |
[INFO] [stderr]   = note: `#[warn(dead_code)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: fields `width` and `height` are never read
[INFO] [stderr]  --> exercises/05_ticket_v2/04_if_let/src/lib.rs:4:17
[INFO] [stderr]   |
[INFO] [stderr] 4 |     Rectangle { width: f64, height: f64 },
[INFO] [stderr]   |     ---------   ^^^^^       ^^^^^^
[INFO] [stderr]   |     |
[INFO] [stderr]   |     fields in this variant
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `ticket`
[INFO] [stderr]   --> exercises/03_ticket_v1/04_visibility/src/lib.rs:47:13
[INFO] [stderr]    |
[INFO] [stderr] 47 |         let ticket = Ticket::new("A title".into(), "A description".into(), "To-Do".into());
[INFO] [stderr]    |             ^^^^^^ help: if this is intentional, prefix it with an underscore: `_ticket`
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(unused_variables)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: function `should_not_be_possible` is never used
[INFO] [stderr]   --> exercises/03_ticket_v1/04_visibility/src/lib.rs:46:8
[INFO] [stderr]    |
[INFO] [stderr] 46 |     fn should_not_be_possible() {
[INFO] [stderr]    |        ^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: function `encapsulation_cannot_be_violated` is never used
[INFO] [stderr]   --> exercises/03_ticket_v1/04_visibility/src/lib.rs:61:8
[INFO] [stderr]    |
[INFO] [stderr] 61 |     fn encapsulation_cannot_be_violated() {
[INFO] [stderr]    |        ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: `if_let` (lib test) generated 2 warnings
[INFO] [stderr] warning: `visibility` (lib test) generated 5 warnings (2 duplicates)
[INFO] [stderr]     Finished `test` profile [unoptimized + debuginfo] target(s) in 0.48s
[INFO] [stderr]      Running unittests src/lib.rs (/opt/rustwide/target/debug/deps/arrays-197565a7e4370b6e)
[INFO] [stdout] 
[INFO] [stderr]      Running unittests src/lib.rs (/opt/rustwide/target/debug/deps/as_cast-74a6d158366d8df3)
[INFO] [stdout] running 1 test
[INFO] [stdout] test tests::test_get_temperature ... ok
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 1 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out; finished in 0.00s
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] running 3 tests
[INFO] [stdout] test tests::bool_to_u8 ... ok
[INFO] [stdout] test tests::u8_to_i8 ... ok
[INFO] [stdout] test tests::u16_to_u32 ... ok
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 3 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out; finished in 0.01s
[INFO] [stdout] 
[INFO] [stderr]      Running unittests src/lib.rs (/opt/rustwide/target/debug/deps/assoc_vs_generic-3d787e3a2d2e39de)
[INFO] [stdout] 
[INFO] [stdout] running 3 tests
[INFO] [stderr]      Running unittests src/lib.rs (/opt/rustwide/target/debug/deps/async_fn-d048025c6852c3db)
[INFO] [stdout] test tests::test_power_u16 ... ok
[INFO] [stdout] test tests::test_power_u32 ... ok
[INFO] [stdout] test tests::test_power_ref_u32 ... ok
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 3 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out; finished in 0.00s
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] running 1 test
[INFO] [stderr]      Running unittests src/lib.rs (/opt/rustwide/target/debug/deps/async_locks-9308af392402858e)
[INFO] [stdout] test tests::test_echo ... ok
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 1 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out; finished in 0.00s
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] running 1 test
[INFO] [stdout] test tests::ping ... ok
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 1 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out; finished in 0.00s
[INFO] [stdout] 
[INFO] [stderr]      Running unittests src/lib.rs (/opt/rustwide/target/debug/deps/blocking-b88907b160ee946d)
[INFO] [stdout] 
[INFO] [stdout] running 1 test
[INFO] [stdout] test tests::test_echo ... ok
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 1 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out; finished in 0.01s
[INFO] [stdout] 
[INFO] [stderr]      Running unittests src/lib.rs (/opt/rustwide/target/debug/deps/bounded-1f93c386825f32fc)
[INFO] [stdout] 
[INFO] [stdout] running 0 tests
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 0 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out; finished in 0.00s
[INFO] [stdout] 
[INFO] [stderr]      Running tests/insert.rs (/opt/rustwide/target/debug/deps/insert-a5da0a2692c53ef3)
[INFO] [stderr]      Running unittests src/lib.rs (/opt/rustwide/target/debug/deps/btreemap-bcbe636b4e791e47)
[INFO] [stdout] 
[INFO] [stdout] running 1 test
[INFO] [stdout] test works ... ok
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 1 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out; finished in 0.00s
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] running 1 test
[INFO] [stdout] test tests::works ... ok
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 1 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out; finished in 0.00s
[INFO] [stdout] 
[INFO] [stderr]      Running unittests src/lib.rs (/opt/rustwide/target/debug/deps/cancellation-fe01957a1692c4d3)
[INFO] [stdout] 
[INFO] [stdout] running 1 test
[INFO] [stdout] test tests::ping ... ok
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 1 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out; finished in 0.17s
[INFO] [stdout] 
[INFO] [stderr]      Running unittests src/lib.rs (/opt/rustwide/target/debug/deps/channels-837d5dfc410b2a83)
[INFO] [stdout] 
[INFO] [stdout] running 0 tests
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 0 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out; finished in 0.00s
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] running 2 tests
[INFO] [stderr]      Running tests/insert.rs (/opt/rustwide/target/debug/deps/insert-77ba3a7607bb1ab1)
[INFO] [stdout] test ready ... ok
[INFO] [stdout] test a_thread_is_spawned ... ok
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 2 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out; finished in 0.20s
[INFO] [stdout] 
[INFO] [stderr]      Running unittests src/lib.rs (/opt/rustwide/target/debug/deps/client-eacbd055915b0fef)
[INFO] [stdout] 
[INFO] [stderr]      Running tests/insert.rs (/opt/rustwide/target/debug/deps/insert-b9da6d6b5e3537db)
[INFO] [stdout] running 0 tests
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 0 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out; finished in 0.00s
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] running 1 test
[INFO] [stdout] test insert_works ... ok
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 1 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out; finished in 0.04s
[INFO] [stdout] 
[INFO] [stderr]      Running unittests src/lib.rs (/opt/rustwide/target/debug/deps/clone-31490e493987d225)
[INFO] [stdout] 
[INFO] [stdout] running 0 tests
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 0 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out; finished in 0.00s
[INFO] [stdout] 
[INFO] [stderr]      Running unittests src/lib.rs (/opt/rustwide/target/debug/deps/combinators-8661316d5c8a1761)
[INFO] [stdout] 
[INFO] [stdout] running 1 test
[INFO] [stdout] test tests::todos ... ok
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 1 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out; finished in 0.00s
[INFO] [stdout] 
[INFO] [stderr]      Running unittests src/lib.rs (/opt/rustwide/target/debug/deps/common-b622edd329b61467)
[INFO] [stdout] 
[INFO] [stdout] running 0 tests
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 0 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out; finished in 0.00s
[INFO] [stdout] 
[INFO] [stderr]      Running unittests src/lib.rs (/opt/rustwide/target/debug/deps/copy-9c298d14fee4b6dc)
[INFO] [stdout] 
[INFO] [stdout] running 1 test
[INFO] [stdout] test tests::test_ops ... ok
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 1 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out; finished in 0.00s
[INFO] [stdout] 
[INFO] [stderr]      Running unittests src/lib.rs (/opt/rustwide/target/debug/deps/deps-a447397118306b29)
[INFO] [stdout] 
[INFO] [stdout] running 0 tests
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 0 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out; finished in 0.00s
[INFO] [stdout] 
[INFO] [stderr]      Running unittests src/lib.rs (/opt/rustwide/target/debug/deps/deref-1724734fa5a1be3b)
[INFO] [stdout] 
[INFO] [stdout] running 1 test
[INFO] [stdout] test tests::test_normalization ... ok
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 1 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out; finished in 0.00s
[INFO] [stdout] 
[INFO] [stderr]      Running unittests src/lib.rs (/opt/rustwide/target/debug/deps/derives-4c9f166003800195)
[INFO] [stdout] 
[INFO] [stdout] running 4 tests
[INFO] [stderr]      Running unittests src/lib.rs (/opt/rustwide/target/debug/deps/destructor-409eb6215bb4cf0d)
[INFO] [stdout] test tests::test_description_not_matching ... ok
[INFO] [stdout] test tests::test_partial_eq ... ok
[INFO] [stdout] test tests::test_status_not_matching ... ok
[INFO] [stdout] test tests::test_title_not_matching ... ok
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 4 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out; finished in 0.00s
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] running 1 test
[INFO] [stdout] test tests::test_outro ... ok
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 1 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out; finished in 0.00s
[INFO] [stdout] 
[INFO] [stderr]      Running unittests src/lib.rs (/opt/rustwide/target/debug/deps/drop-9727d98e79249704)
[INFO] [stdout] 
[INFO] [stdout] running 2 tests
[INFO] [stdout] test tests::test_defused_drop_bomb ... ok
[INFO] [stdout] test tests::test_drop_bomb - should panic ... ok
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 2 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out; finished in 0.04s
[INFO] [stdout] 
[INFO] [stderr]      Running unittests src/lib.rs (/opt/rustwide/target/debug/deps/encapsulation-926e38de4a0bc6c7)
[INFO] [stdout] 
[INFO] [stdout] running 3 tests
[INFO] [stdout] test tests::status ... ok
[INFO] [stdout] test tests::description ... ok
[INFO] [stdout] test tests::title ... ok
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 3 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out; finished in 0.00s
[INFO] [stdout] 
[INFO] [stderr]      Running unittests src/lib.rs (/opt/rustwide/target/debug/deps/enum_-aaf6e3b3c55d31ba)
[INFO] [stdout] 
[INFO] [stdout] running 4 tests
[INFO] [stdout] test tests::test_description_not_matching ... ok
[INFO] [stdout] test tests::test_partial_eq ... ok
[INFO] [stdout] test tests::test_status_not_matching ... ok
[INFO] [stdout] test tests::test_title_not_matching ... ok
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 4 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out; finished in 0.01s
[INFO] [stdout] 
[INFO] [stderr]      Running unittests src/lib.rs (/opt/rustwide/target/debug/deps/error_enums-d9e92707fbf1e822)
[INFO] [stdout] 
[INFO] [stdout] running 4 tests
[INFO] [stdout] test tests::template_description_is_used_if_empty ... ok
[INFO] [stdout] test tests::template_description_is_used_if_too_long ... ok
[INFO] [stdout] test tests::title_cannot_be_empty - should panic ... ok
[INFO] [stdout] test tests::title_cannot_be_longer_than_fifty_chars - should panic ... ok
[INFO] [stdout] 
[INFO] [stderr]      Running unittests src/lib.rs (/opt/rustwide/target/debug/deps/error_trait-b7d7b835cddd7901)
[INFO] [stdout] test result: ok. 4 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out; finished in 0.02s
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] running 5 tests
[INFO] [stdout] test tests::display_is_correctly_implemented ... ok
[INFO] [stdout] test tests::template_description_is_used_if_too_long ... ok
[INFO] [stdout] test tests::template_description_is_used_if_empty ... ok
[INFO] [stdout] test tests::title_cannot_be_empty - should panic ... ok
[INFO] [stdout] test tests::title_cannot_be_longer_than_fifty_chars - should panic ... ok
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 5 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out; finished in 0.04s
[INFO] [stdout] 
[INFO] [stderr]      Running unittests src/lib.rs (/opt/rustwide/target/debug/deps/factorial-187d0a25de9d1f7e)
[INFO] [stdout] 
[INFO] [stdout] running 4 tests
[INFO] [stdout] test tests::first ... ok
[INFO] [stdout] test tests::fifth ... ok
[INFO] [stdout] test tests::second ... ok
[INFO] [stdout] test tests::third ... ok
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 4 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out; finished in 0.00s
[INFO] [stdout] 
[INFO] [stderr]      Running unittests src/lib.rs (/opt/rustwide/target/debug/deps/fallibility-1fbf9e5dac36faf9)
[INFO] [stdout] 
[INFO] [stdout] running 4 tests
[INFO] [stdout] test tests::description_cannot_be_longer_than_500_chars ... ok
[INFO] [stdout] test tests::description_cannot_be_empty ... ok
[INFO] [stdout] test tests::title_cannot_be_empty ... ok
[INFO] [stdout] test tests::title_cannot_be_longer_than_fifty_chars ... ok
[INFO] [stderr]      Running unittests src/lib.rs (/opt/rustwide/target/debug/deps/for_-71b885091729a6b3)
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 4 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out; finished in 0.00s
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] running 4 tests
[INFO] [stdout] test tests::fifth ... ok
[INFO] [stdout] test tests::first ... ok
[INFO] [stdout] test tests::second ... ok
[INFO] [stdout] test tests::third ... ok
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 4 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out; finished in 0.00s
[INFO] [stdout] 
[INFO] [stderr]      Running unittests src/lib.rs (/opt/rustwide/target/debug/deps/from-aa804450cabe649e)
[INFO] [stdout] 
[INFO] [stdout] running 0 tests
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 0 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out; finished in 0.00s
[INFO] [stdout] 
[INFO] [stderr]      Running unittests src/lib.rs (/opt/rustwide/target/debug/deps/future-940cb09176bf16b5)
[INFO] [stderr]      Running unittests src/lib.rs (/opt/rustwide/target/debug/deps/hashmap-0b786326238be363)
[INFO] [stdout] 
[INFO] [stdout] running 0 tests
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 0 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out; finished in 0.00s
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] running 1 test
[INFO] [stdout] test tests::works ... ok
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 1 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out; finished in 0.00s
[INFO] [stdout] 
[INFO] [stderr]      Running unittests src/lib.rs (/opt/rustwide/target/debug/deps/heap-02ecf14730dbc4b0)
[INFO] [stdout] 
[INFO] [stdout] running 2 tests
[INFO] [stdout] test tests::string_size ... ok
[INFO] [stderr]      Running unittests src/lib.rs (/opt/rustwide/target/debug/deps/if_else-f7fc5250777e724c)
[INFO] [stdout] test tests::ticket_size ... ok
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 2 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out; finished in 0.00s
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] running 5 tests
[INFO] [stdout] test tests::high ... ok
[INFO] [stdout] test tests::six ... ok
[INFO] [stdout] test tests::two ... ok
[INFO] [stdout] test tests::one ... ok
[INFO] [stdout] test tests::nine ... ok
[INFO] [stderr]      Running unittests src/lib.rs (/opt/rustwide/target/debug/deps/if_let-20bde196346dffe7)
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 5 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out; finished in 0.17s
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] running 3 tests
[INFO] [stdout] test tests::test_circle ... ok
[INFO] [stdout] test tests::test_square - should panic ... ok
[INFO] [stdout] test tests::test_rectangle - should panic ... ok
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 3 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out; finished in 0.04s
[INFO] [stdout] 
[INFO] [stderr]      Running unittests src/lib.rs (/opt/rustwide/target/debug/deps/impl_trait-66d35b38c244e968)
[INFO] [stdout] 
[INFO] [stdout] running 1 test
[INFO] [stderr]      Running unittests src/lib.rs (/opt/rustwide/target/debug/deps/impl_trait_2-cff92b083ee2cbc7)
[INFO] [stdout] test tests::in_progress ... ok
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 1 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out; finished in 0.00s
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] running 1 test
[INFO] [stdout] test tests::generic_add ... ok
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 1 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out; finished in 0.00s
[INFO] [stdout] 
[INFO] [stderr]      Running unittests src/lib.rs (/opt/rustwide/target/debug/deps/index-89e7e2f141020bdb)
[INFO] [stdout] 
[INFO] [stdout] running 1 test
[INFO] [stdout] test tests::works ... ok
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 1 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out; finished in 0.00s
[INFO] [stdout] 
[INFO] [stderr]      Running unittests src/lib.rs (/opt/rustwide/target/debug/deps/index_mut-67dce19bb39dc46e)
[INFO] [stdout] 
[INFO] [stdout] running 1 test
[INFO] [stdout] test tests::works ... ok
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 1 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out; finished in 0.00s
[INFO] [stdout] 
[INFO] [stderr]      Running unittests src/lib.rs (/opt/rustwide/target/debug/deps/integers-4bf4efe0189e3d85)
[INFO] [stdout] 
[INFO] [stdout] running 1 test
[INFO] [stdout] test tests::case ... ok
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 1 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out; finished in 0.00s
[INFO] [stdout] 
[INFO] [stderr]      Running unittests src/lib.rs (/opt/rustwide/target/debug/deps/interior_mutability-88599b8b6b0041e8)
[INFO] [stdout] 
[INFO] [stdout] running 2 tests
[INFO] [stdout] test tests::it_works ... ok
[INFO] [stdout] test tests::multiple ... ok
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 2 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out; finished in 0.00s
[INFO] [stdout] 
[INFO] [stderr]      Running unittests src/lib.rs (/opt/rustwide/target/debug/deps/intro_01-7c88063f8aacff08)
[INFO] [stdout] 
[INFO] [stdout] running 1 test
[INFO] [stdout] test tests::test_intro ... ok
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 1 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out; finished in 0.00s
[INFO] [stdout] 
[INFO] [stderr]      Running unittests src/lib.rs (/opt/rustwide/target/debug/deps/intro_02-9bd645601360b91e)
[INFO] [stdout] 
[INFO] [stdout] running 1 test
[INFO] [stdout] test tests::test_intro ... ok
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 1 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out; finished in 0.00s
[INFO] [stdout] 
[INFO] [stderr]      Running unittests src/lib.rs (/opt/rustwide/target/debug/deps/intro_03-92269b60ee4b2eae)
[INFO] [stdout] 
[INFO] [stdout] running 1 test
[INFO] [stdout] test tests::test_intro ... ok
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 1 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out; finished in 0.00s
[INFO] [stdout] 
[INFO] [stderr]      Running unittests src/lib.rs (/opt/rustwide/target/debug/deps/intro_04-b30533f916b35ab1)
[INFO] [stdout] 
[INFO] [stdout] running 1 test
[INFO] [stdout] test tests::test_intro ... ok
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 1 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out; finished in 0.00s
[INFO] [stdout] 
[INFO] [stderr]      Running unittests src/lib.rs (/opt/rustwide/target/debug/deps/intro_05-077b3c57d8f7cf48)
[INFO] [stdout] 
[INFO] [stdout] running 1 test
[INFO] [stdout] test tests::test_intro ... ok
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 1 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out; finished in 0.00s
[INFO] [stdout] 
[INFO] [stderr]      Running unittests src/lib.rs (/opt/rustwide/target/debug/deps/intro_07-e2ee99387fc02f37)
[INFO] [stdout] 
[INFO] [stdout] running 1 test
[INFO] [stdout] test tests::test_intro ... ok
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 1 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out; finished in 0.00s
[INFO] [stdout] 
[INFO] [stderr]      Running unittests src/lib.rs (/opt/rustwide/target/debug/deps/intro_08-991e5b081ca34eea)
[INFO] [stdout] 
[INFO] [stdout] running 1 test
[INFO] [stdout] test tests::test_intro ... ok
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 1 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out; finished in 0.00s
[INFO] [stdout] 
[INFO] [stderr]      Running unittests src/lib.rs (/opt/rustwide/target/debug/deps/iter-be56ddfaf09a5253)
[INFO] [stdout] 
[INFO] [stdout] running 1 test
[INFO] [stdout] test tests::add_ticket ... ok
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 1 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out; finished in 0.00s
[INFO] [stdout] 
[INFO] [stderr]      Running unittests src/lib.rs (/opt/rustwide/target/debug/deps/iterators-3fcd3857d251d223)
[INFO] [stdout] 
[INFO] [stdout] running 1 test
[INFO] [stdout] test tests::add_ticket ... ok
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 1 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out; finished in 0.00s
[INFO] [stdout] 
[INFO] [stderr]      Running unittests src/lib.rs (/opt/rustwide/target/debug/deps/leaking-c5d3979fd362f540)
[INFO] [stdout] 
[INFO] [stdout] running 5 tests
[INFO] [stdout] test tests::empty ... ok
[INFO] [stdout] test tests::nine ... ok
[INFO] [stdout] test tests::ten ... ok
[INFO] [stdout] test tests::one ... ok
[INFO] [stdout] test tests::five ... ok
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 5 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out; finished in 0.06s
[INFO] [stdout] 
[INFO] [stderr]      Running unittests src/lib.rs (/opt/rustwide/target/debug/deps/lifetime-8d6454581a3de48f)
[INFO] [stdout] 
[INFO] [stdout] running 1 test
[INFO] [stdout] test tests::add_ticket ... ok
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 1 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out; finished in 0.00s
[INFO] [stdout] 
[INFO] [stderr]      Running unittests src/lib.rs (/opt/rustwide/target/debug/deps/locks-706a11203137fa94)
[INFO] [stdout] 
[INFO] [stdout] running 0 tests
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 0 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out; finished in 0.00s
[INFO] [stdout] 
[INFO] [stderr]      Running tests/check.rs (/opt/rustwide/target/debug/deps/check-a729ae1d7e0db803)
[INFO] [stdout] 
[INFO] [stdout] running 1 test
[INFO] [stdout] test works ... ok
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 1 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out; finished in 0.00s
[INFO] [stdout] 
[INFO] [stderr]      Running unittests src/lib.rs (/opt/rustwide/target/debug/deps/match_-779e9899a1f0c729)
[INFO] [stdout] 
[INFO] [stdout] running 5 tests
[INFO] [stdout] test tests::test_circle ... ok
[INFO] [stdout] test tests::test_rectangle ... ok
[INFO] [stdout] test tests::test_triangle ... ok
[INFO] [stdout] test tests::test_square ... ok
[INFO] [stdout] test tests::test_pentagon ... ok
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 5 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out; finished in 0.03s
[INFO] [stdout] 
[INFO] [stderr]      Running unittests src/lib.rs (/opt/rustwide/target/debug/deps/mdbook_exercise_linker-b96a7d713e523c14)
[INFO] [stdout] 
[INFO] [stdout] running 0 tests
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 0 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out; finished in 0.00s
[INFO] [stdout] 
[INFO] [stderr]      Running unittests src/main.rs (/opt/rustwide/target/debug/deps/mdbook_exercise_linker-98a8ef70a8b6b9b9)
[INFO] [stdout] 
[INFO] [stdout] running 0 tests
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 0 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out; finished in 0.00s
[INFO] [stdout] 
[INFO] [stderr]      Running unittests src/lib.rs (/opt/rustwide/target/debug/deps/mdbook_link_shortener-828b52f22872567d)
[INFO] [stdout] 
[INFO] [stdout] running 0 tests
[INFO] [stdout] 
[INFO] [stderr]      Running unittests src/main.rs (/opt/rustwide/target/debug/deps/mdbook_link_shortener-aff9f2eaa0c34d1b)
[INFO] [stdout] test result: ok. 0 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out; finished in 0.00s
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] running 0 tests
[INFO] [stdout] 
[INFO] [stderr]      Running unittests src/lib.rs (/opt/rustwide/target/debug/deps/modules-b397e3521f6c4159)
[INFO] [stdout] test result: ok. 0 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out; finished in 0.00s
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] running 0 tests
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 0 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out; finished in 0.00s
[INFO] [stdout] 
[INFO] [stderr]      Running unittests src/lib.rs (/opt/rustwide/target/debug/deps/mut_slice-8e39d1b15085ed1e)
[INFO] [stdout] 
[INFO] [stdout] running 3 tests
[INFO] [stdout] test tests::empty ... ok
[INFO] [stdout] test tests::multiple ... ok
[INFO] [stdout] test tests::one ... ok
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 3 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out; finished in 0.00s
[INFO] [stdout] 
[INFO] [stderr]      Running unittests src/lib.rs (/opt/rustwide/target/debug/deps/nullability-794da372ca784aeb)
[INFO] [stdout] 
[INFO] [stdout] running 3 tests
[INFO] [stdout] test tests::test_done ... ok
[INFO] [stdout] test tests::test_in_progress ... ok
[INFO] [stdout] test tests::test_todo ... ok
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 3 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out; finished in 0.00s
[INFO] [stdout] 
[INFO] [stderr]      Running unittests src/lib.rs (/opt/rustwide/target/debug/deps/orphan-84cf408d572a37ee)
[INFO] [stdout] 
[INFO] [stderr]      Running unittests src/lib.rs (/opt/rustwide/target/debug/deps/outro_02-fa91565d184c17f7)
[INFO] [stdout] running 0 tests
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 0 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out; finished in 0.00s
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] running 0 tests
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 0 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out; finished in 0.00s
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]      Running tests/integration.rs (/opt/rustwide/target/debug/deps/integration-204dca74293b4f28)
[INFO] [stdout] running 5 tests
[INFO] [stdout] test test_order ... ok
[INFO] [stdout] test test_long_product_name - should panic ... ok
[INFO] [stdout] test test_empty_product_name - should panic ... ok
[INFO] [stdout] test test_zero_quantity - should panic ... ok
[INFO] [stdout] test test_zero_unit_price - should panic ... ok
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 5 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out; finished in 0.02s
[INFO] [stdout] 
[INFO] [stderr]      Running unittests src/lib.rs (/opt/rustwide/target/debug/deps/outro_03-a4618a111501144c)
[INFO] [stdout] 
[INFO] [stdout] running 0 tests
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 0 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out; finished in 0.00s
[INFO] [stdout] 
[INFO] [stderr]      Running tests/integration.rs (/opt/rustwide/target/debug/deps/integration-6576185cfd6f7561)
[INFO] [stdout] 
[INFO] [stdout] running 1 test
[INFO] [stdout] test test_saturating_u16 ... ok
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 1 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out; finished in 0.00s
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]      Running unittests src/lib.rs (/opt/rustwide/target/debug/deps/outro_04-130d938dc67eaeb2)
[INFO] [stdout] running 11 tests
[INFO] [stderr]      Running unittests src/lib.rs (/opt/rustwide/target/debug/deps/outro_08-950f49564580aa90)
[INFO] [stdout] test description::tests::test_try_from_long_string ... ok
[INFO] [stdout] test description::tests::test_try_from_empty_string ... ok
[INFO] [stdout] test description::tests::test_try_from_str ... ok
[INFO] [stdout] test description::tests::test_try_from_string ... ok
[INFO] [stdout] test status::tests::test_try_from_invalid ... ok
[INFO] [stdout] test status::tests::test_try_from_string ... ok
[INFO] [stdout] test title::tests::test_try_from_long_string ... ok
[INFO] [stdout] test title::tests::test_try_from_empty_string ... ok
[INFO] [stdout] test title::tests::test_try_from_str ... ok
[INFO] [stdout] test status::tests::test_try_from_str ... ok
[INFO] [stdout] test title::tests::test_try_from_string ... ok
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 11 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out; finished in 0.00s
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] running 0 tests
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 0 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out; finished in 0.00s
[INFO] [stdout] 
[INFO] [stderr]      Running unittests src/lib.rs (/opt/rustwide/target/debug/deps/overflow-efc87af8c2c5774e)
[INFO] [stdout] 
[INFO] [stdout] running 5 tests
[INFO] [stdout] test tests::fifth ... ok
[INFO] [stdout] test tests::first ... ok
[INFO] [stdout] test tests::third ... ok
[INFO] [stdout] test tests::second ... ok
[INFO] [stdout] test tests::twentieth ... FAILED
[INFO] [stdout] 
[INFO] [stdout] failures:
[INFO] [stdout] 
[INFO] [stdout] ---- tests::twentieth stdout ----
[INFO] [stdout] 
[INFO] [stdout] thread 'tests::twentieth' panicked at exercises/02_basic_calculator/08_overflow/src/lib.rs:11:9:
[INFO] [stdout] attempt to multiply with overflow
[INFO] [stdout] stack backtrace:
[INFO] [stdout]    0:     0x5c3bfd717682 - std::backtrace_rs::backtrace::libunwind::trace::h2d45396358f41939
[INFO] [stdout]                                at /rustc/1159e78c4747b02ef996e55082b704c09b970588/library/std/src/../../backtrace/src/backtrace/libunwind.rs:117:9
[INFO] [stdout]    1:     0x5c3bfd717682 - std::backtrace_rs::backtrace::trace_unsynchronized::hffcefc0b67f1d6e2
[INFO] [stdout]                                at /rustc/1159e78c4747b02ef996e55082b704c09b970588/library/std/src/../../backtrace/src/backtrace/mod.rs:66:14
[INFO] [stdout]    2:     0x5c3bfd717682 - std::sys::backtrace::_print_fmt::hd72f71d23b436b92
[INFO] [stdout]                                at /rustc/1159e78c4747b02ef996e55082b704c09b970588/library/std/src/sys/backtrace.rs:66:9
[INFO] [stdout]    3:     0x5c3bfd717682 - <std::sys::backtrace::BacktraceLock::print::DisplayBacktrace as core::fmt::Display>::fmt::hdcfcb6d4c8489523
[INFO] [stdout]                                at /rustc/1159e78c4747b02ef996e55082b704c09b970588/library/std/src/sys/backtrace.rs:39:26
[INFO] [stdout]    4:     0x5c3bfd73c843 - core::fmt::rt::Argument::fmt::h2c56b3114963061a
[INFO] [stdout]                                at /rustc/1159e78c4747b02ef996e55082b704c09b970588/library/core/src/fmt/rt.rs:173:76
[INFO] [stdout]    5:     0x5c3bfd73c843 - core::fmt::write::h8a494366950f23bb
[INFO] [stdout]                                at /rustc/1159e78c4747b02ef996e55082b704c09b970588/library/core/src/fmt/mod.rs:1468:25
[INFO] [stdout]    6:     0x5c3bfd714603 - std::io::default_write_fmt::h7b8824096454f323
[INFO] [stdout]                                at /rustc/1159e78c4747b02ef996e55082b704c09b970588/library/std/src/io/mod.rs:639:11
[INFO] [stdout]    7:     0x5c3bfd714603 - std::io::Write::write_fmt::h4e71294925c334d0
[INFO] [stdout]                                at /rustc/1159e78c4747b02ef996e55082b704c09b970588/library/std/src/io/mod.rs:1954:13
[INFO] [stdout]    8:     0x5c3bfd7174d2 - std::sys::backtrace::BacktraceLock::print::hb2a626a81e06b2dc
[INFO] [stdout]                                at /rustc/1159e78c4747b02ef996e55082b704c09b970588/library/std/src/sys/backtrace.rs:42:9
[INFO] [stdout]    9:     0x5c3bfd718bf9 - std::panicking::default_hook::{{closure}}::h4f78485264f12d10
[INFO] [stdout]                                at /rustc/1159e78c4747b02ef996e55082b704c09b970588/library/std/src/panicking.rs:300:27
[INFO] [stdout]   10:     0x5c3bfd718a2e - std::panicking::default_hook::h2c66fc99e962531d
[INFO] [stdout]                                at /rustc/1159e78c4747b02ef996e55082b704c09b970588/library/std/src/panicking.rs:324:9
[INFO] [stdout]   11:     0x5c3bfd6e1004 - <alloc::boxed::Box<F,A> as core::ops::function::Fn<Args>>::call::hb6bd65493727d71a
[INFO] [stdout]                                at /rustc/1159e78c4747b02ef996e55082b704c09b970588/library/alloc/src/boxed.rs:1985:9
[INFO] [stdout]   12:     0x5c3bfd6e1004 - test::test_main_with_exit_callback::{{closure}}::h60217ec76a0ece4a
[INFO] [stdout]                                at /rustc/1159e78c4747b02ef996e55082b704c09b970588/library/test/src/lib.rs:145:21
[INFO] [stdout]   13:     0x5c3bfd7195ce - <alloc::boxed::Box<F,A> as core::ops::function::Fn<Args>>::call::h318e4efb8c1a5689
[INFO] [stdout]                                at /rustc/1159e78c4747b02ef996e55082b704c09b970588/library/alloc/src/boxed.rs:1985:9
[INFO] [stdout]   14:     0x5c3bfd7195ce - std::panicking::rust_panic_with_hook::h33ac55f64bbd807d
[INFO] [stdout]                                at /rustc/1159e78c4747b02ef996e55082b704c09b970588/library/std/src/panicking.rs:841:13
[INFO] [stdout]   15:     0x5c3bfd719366 - std::panicking::begin_panic_handler::{{closure}}::h30e7cb89678a57fe
[INFO] [stdout]                                at /rustc/1159e78c4747b02ef996e55082b704c09b970588/library/std/src/panicking.rs:699:13
[INFO] [stdout]   16:     0x5c3bfd717b79 - std::sys::backtrace::__rust_end_short_backtrace::hed60f27456c16ced
[INFO] [stdout]                                at /rustc/1159e78c4747b02ef996e55082b704c09b970588/library/std/src/sys/backtrace.rs:174:18
[INFO] [stdout]   17:     0x5c3bfd71902d - __rustc[de2ca18b4c54d5b8]::rust_begin_unwind
[INFO] [stdout]                                at /rustc/1159e78c4747b02ef996e55082b704c09b970588/library/std/src/panicking.rs:697:5
[INFO] [stdout]   18:     0x5c3bfd73b360 - core::panicking::panic_fmt::h62f63d096dd276af
[INFO] [stdout]                                at /rustc/1159e78c4747b02ef996e55082b704c09b970588/library/core/src/panicking.rs:75:14
[INFO] [stdout]   19:     0x5c3bfd741297 - core::panicking::panic_const::panic_const_mul_overflow::h80bac1314a91ed35
[INFO] [stdout]                                at /rustc/1159e78c4747b02ef996e55082b704c09b970588/library/core/src/panicking.rs:175:17
[INFO] [stdout]   20:     0x5c3bfd6a7769 - overflow::factorial::h219263abfdd6584f
[INFO] [stdout]                                at /opt/rustwide/workdir/exercises/02_basic_calculator/08_overflow/src/lib.rs:11:9
[INFO] [stdout]   21:     0x5c3bfd6a77ae - overflow::tests::twentieth::h078d344bfc5fe185
[INFO] [stdout]                                at /opt/rustwide/workdir/exercises/02_basic_calculator/08_overflow/src/lib.rs:25:20
[INFO] [stdout]   22:     0x5c3bfd6a7787 - overflow::tests::twentieth::{{closure}}::h6d511b86157ef308
[INFO] [stdout]                                at /opt/rustwide/workdir/exercises/02_basic_calculator/08_overflow/src/lib.rs:21:19
[INFO] [stdout]   23:     0x5c3bfd6a6936 - core::ops::function::FnOnce::call_once::h9f58fb15e1130492
[INFO] [stdout]                                at /rustc/1159e78c4747b02ef996e55082b704c09b970588/library/core/src/ops/function.rs:253:5
[INFO] [stdout]   24:     0x5c3bfd6e686b - core::ops::function::FnOnce::call_once::h1f9474f1347fff52
[INFO] [stdout]                                at /rustc/1159e78c4747b02ef996e55082b704c09b970588/library/core/src/ops/function.rs:253:5
[INFO] [stdout]   25:     0x5c3bfd6e686b - test::__rust_begin_short_backtrace::ha52ab26e77157f03
[INFO] [stdout]                                at /rustc/1159e78c4747b02ef996e55082b704c09b970588/library/test/src/lib.rs:648:18
[INFO] [stdout]   26:     0x5c3bfd6e59a5 - test::run_test_in_process::{{closure}}::h229c1a11a50b261f
[INFO] [stdout]                                at /rustc/1159e78c4747b02ef996e55082b704c09b970588/library/test/src/lib.rs:671:74
[INFO] [stdout]   27:     0x5c3bfd6e59a5 - <core::panic::unwind_safe::AssertUnwindSafe<F> as core::ops::function::FnOnce<()>>::call_once::h78821afbf97b39a9
[INFO] [stdout]                                at /rustc/1159e78c4747b02ef996e55082b704c09b970588/library/core/src/panic/unwind_safe.rs:272:9
[INFO] [stdout]   28:     0x5c3bfd6e59a5 - std::panicking::catch_unwind::do_call::h53abf3ed5bd32ba3
[INFO] [stdout]                                at /rustc/1159e78c4747b02ef996e55082b704c09b970588/library/std/src/panicking.rs:589:40
[INFO] [stdout]   29:     0x5c3bfd6e59a5 - std::panicking::catch_unwind::h6deb5fe1e91873c9
[INFO] [stdout]                                at /rustc/1159e78c4747b02ef996e55082b704c09b970588/library/std/src/panicking.rs:552:19
[INFO] [stdout]   30:     0x5c3bfd6e59a5 - std::panic::catch_unwind::hea0829b6b565654b
[INFO] [stdout]                                at /rustc/1159e78c4747b02ef996e55082b704c09b970588/library/std/src/panic.rs:359:14
[INFO] [stdout]   31:     0x5c3bfd6e59a5 - test::run_test_in_process::hdc44dfecea3db21b
[INFO] [stdout]                                at /rustc/1159e78c4747b02ef996e55082b704c09b970588/library/test/src/lib.rs:671:27
[INFO] [stdout]   32:     0x5c3bfd6e59a5 - test::run_test::{{closure}}::h0364ba59bf23f652
[INFO] [stdout]                                at /rustc/1159e78c4747b02ef996e55082b704c09b970588/library/test/src/lib.rs:592:43
[INFO] [stdout]   33:     0x5c3bfd6a95a4 - test::run_test::{{closure}}::h32730b304eec05da
[INFO] [stdout]                                at /rustc/1159e78c4747b02ef996e55082b704c09b970588/library/test/src/lib.rs:622:41
[INFO] [stdout]   34:     0x5c3bfd6a95a4 - std::sys::backtrace::__rust_begin_short_backtrace::h177cb952fc54ad2c
[INFO] [stdout]                                at /rustc/1159e78c4747b02ef996e55082b704c09b970588/library/std/src/sys/backtrace.rs:158:18
[INFO] [stdout]   35:     0x5c3bfd6acf7a - std::thread::Builder::spawn_unchecked_::{{closure}}::{{closure}}::h119d903520007597
[INFO] [stdout]                                at /rustc/1159e78c4747b02ef996e55082b704c09b970588/library/std/src/thread/mod.rs:559:17
[INFO] [stdout]   36:     0x5c3bfd6acf7a - <core::panic::unwind_safe::AssertUnwindSafe<F> as core::ops::function::FnOnce<()>>::call_once::hab88401d606702a6
[INFO] [stdout]                                at /rustc/1159e78c4747b02ef996e55082b704c09b970588/library/core/src/panic/unwind_safe.rs:272:9
[INFO] [stdout]   37:     0x5c3bfd6acf7a - std::panicking::catch_unwind::do_call::h163fe12cca9901c2
[INFO] [stdout]                                at /rustc/1159e78c4747b02ef996e55082b704c09b970588/library/std/src/panicking.rs:589:40
[INFO] [stdout]   38:     0x5c3bfd6acf7a - std::panicking::catch_unwind::he81557d0e17cc1bc
[INFO] [stdout]                                at /rustc/1159e78c4747b02ef996e55082b704c09b970588/library/std/src/panicking.rs:552:19
[INFO] [stdout]   39:     0x5c3bfd6acf7a - std::panic::catch_unwind::hc2b8e79c20593955
[INFO] [stdout]                                at /rustc/1159e78c4747b02ef996e55082b704c09b970588/library/std/src/panic.rs:359:14
[INFO] [stdout]   40:     0x5c3bfd6acf7a - std::thread::Builder::spawn_unchecked_::{{closure}}::hfa6b4978e07815cc
[INFO] [stdout]                                at /rustc/1159e78c4747b02ef996e55082b704c09b970588/library/std/src/thread/mod.rs:557:30
[INFO] [stdout]   41:     0x5c3bfd6acf7a - core::ops::function::FnOnce::call_once{{vtable.shim}}::hddcd7484a13fd793
[INFO] [stdout]                                at /rustc/1159e78c4747b02ef996e55082b704c09b970588/library/core/src/ops/function.rs:253:5
[INFO] [stdout]   42:     0x5c3bfd71c54f - <alloc::boxed::Box<F,A> as core::ops::function::FnOnce<Args>>::call_once::h5924238c754de3b8
[INFO] [stdout]                                at /rustc/1159e78c4747b02ef996e55082b704c09b970588/library/alloc/src/boxed.rs:1971:9
[INFO] [stdout]   43:     0x5c3bfd71c54f - std::sys::pal::unix::thread::Thread::new::thread_start::hb6e99e73da4d28f8
[INFO] [stdout]                                at /rustc/1159e78c4747b02ef996e55082b704c09b970588/library/std/src/sys/pal/unix/thread.rs:107:17
[INFO] [stdout]   44:     0x70001f1e1aa4 - <unknown>
[INFO] [stdout]   45:     0x70001f26ea34 - clone
[INFO] [stdout]   46:                0x0 - <unknown>
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] failures:
[INFO] [stdout]     tests::twentieth
[INFO] [stdout] 
[INFO] [stdout] test result: FAILED. 4 passed; 1 failed; 0 ignored; 0 measured; 0 filtered out; finished in 0.03s
[INFO] [stdout] 
[INFO] [stderr] error: test failed, to rerun pass `-p overflow --lib`
[INFO] running `Command { std: "docker" "inspect" "3603d75b179b69ae9d14913b47b9126b4b4a211081b43757e539a1aaddd8c379", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "3603d75b179b69ae9d14913b47b9126b4b4a211081b43757e539a1aaddd8c379", kill_on_drop: false }`
[INFO] [stdout] 3603d75b179b69ae9d14913b47b9126b4b4a211081b43757e539a1aaddd8c379
