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[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
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[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fmstevesmith%2F100-exercises-to-learn-rust" "/workspace/builds/worker-1-tc1/source", kill_on_drop: false }`
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[INFO] [stderr] done.
[INFO] started tweaking git repo https://github.com/mstevesmith/100-exercises-to-learn-rust
[INFO] finished tweaking git repo https://github.com/mstevesmith/100-exercises-to-learn-rust
[INFO] tweaked toml for git repo https://github.com/mstevesmith/100-exercises-to-learn-rust written to /workspace/builds/worker-1-tc1/source/Cargo.toml
[INFO] validating manifest of git repo https://github.com/mstevesmith/100-exercises-to-learn-rust on toolchain ab26b175979ee7b2cb3302dce204b99df96f7efb
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+ab26b175979ee7b2cb3302dce204b99df96f7efb" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
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[INFO] [stderr]     Checking getopts v0.2.21
[INFO] [stderr]     Checking packages v0.1.0 (/opt/rustwide/workdir/exercises/05_ticket_v2/10_packages)
[INFO] [stderr]     Checking outro_03 v0.1.0 (/opt/rustwide/workdir/exercises/04_traits/14_outro)
[INFO] [stderr]     Checking outro_02 v0.1.0 (/opt/rustwide/workdir/exercises/03_ticket_v1/12_outro)
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[INFO] [stderr]     Checking sha1 v0.10.6
[INFO] [stderr]     Checking error_trait v0.1.0 (/opt/rustwide/workdir/exercises/05_ticket_v2/09_error_trait)
[INFO] [stdout] warning: unused import: `std::fmt`
[INFO] [stdout]  --> exercises/05_ticket_v2/09_error_trait/src/lib.rs:6:5
[INFO] [stdout]   |
[INFO] [stdout] 6 | use std::fmt;
[INFO] [stdout]   |     ^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Checking notify-debouncer-mini v0.4.1
[INFO] [stdout] warning: unused import: `std::error::Error`
[INFO] [stdout]  --> exercises/05_ticket_v2/09_error_trait/src/lib.rs:7:5
[INFO] [stdout]   |
[INFO] [stdout] 7 | use std::error::Error;
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^^^
[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:51:5
[INFO] [stdout]    |
[INFO] [stdout] 49 | enum Status {
[INFO] [stdout]    |      ------ variants in this enum
[INFO] [stdout] 50 |     ToDo,
[INFO] [stdout] 51 |     InProgress { assigned_to: String },
[INFO] [stdout]    |     ^^^^^^^^^^
[INFO] [stdout] 52 |     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)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Checking deps v0.1.0 (/opt/rustwide/workdir/exercises/05_ticket_v2/11_dependencies)
[INFO] [stderr]     Checking str_slice v0.1.0 (/opt/rustwide/workdir/exercises/04_traits/06_str_slice)
[INFO] [stderr]     Checking variants_with_data v0.1.0 (/opt/rustwide/workdir/exercises/05_ticket_v2/03_variants_with_data)
[INFO] [stderr]     Checking itertools v0.13.0
[INFO] [stderr]     Checking headers v0.3.9
[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)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Checking error_enums v0.1.0 (/opt/rustwide/workdir/exercises/05_ticket_v2/08_error_enums)
[INFO] [stderr]     Checking setters v0.1.0 (/opt/rustwide/workdir/exercises/03_ticket_v1/07_setters)
[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)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Checking validation v0.1.0 (/opt/rustwide/workdir/exercises/03_ticket_v1/02_validation)
[INFO] [stderr]     Checking nullability v0.1.0 (/opt/rustwide/workdir/exercises/05_ticket_v2/05_nullability)
[INFO] [stderr]     Checking enum_ v0.1.0 (/opt/rustwide/workdir/exercises/05_ticket_v2/01_enum)
[INFO] [stderr]     Checking unwrap v0.1.0 (/opt/rustwide/workdir/exercises/05_ticket_v2/07_unwrap)
[INFO] [stdout] warning: unused variable: `err_str`
[INFO] [stdout]   --> exercises/05_ticket_v2/08_error_enums/src/lib.rs:20:50
[INFO] [stdout]    |
[INFO] [stdout] 20 | ...   TicketNewError::DescriptionErr { err_str } => Ticket::new(title, "Description not provided".to_string(), status).unwrap()
[INFO] [stdout]    |                                        ^^^^^^^ help: try ignoring the field: `err_str: _`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_variables)]` (part of `#[warn(unused)]`) on by default
[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]    = note: `#[warn(dead_code)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Checking fallibility v0.1.0 (/opt/rustwide/workdir/exercises/05_ticket_v2/06_fallibility)
[INFO] [stderr]     Checking sync v0.1.0 (/opt/rustwide/workdir/exercises/07_threads/14_sync)
[INFO] [stderr]     Checking saturating v0.1.0 (/opt/rustwide/workdir/exercises/02_basic_calculator/09_saturating)
[INFO] [stdout] warning: variants `InProgress` and `Done` are never constructed
[INFO] [stdout]   --> exercises/05_ticket_v2/07_unwrap/src/lib.rs:18:5
[INFO] [stdout]    |
[INFO] [stdout] 16 | enum Status {
[INFO] [stdout]    |      ------ variants in this enum
[INFO] [stdout] 17 |     ToDo,
[INFO] [stdout] 18 |     InProgress { assigned_to: String },
[INFO] [stdout]    |     ^^^^^^^^^^
[INFO] [stdout] 19 |     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)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Checking orphan v0.1.0 (/opt/rustwide/workdir/exercises/04_traits/02_orphan_rule)
[INFO] [stderr]     Checking panics v0.1.0 (/opt/rustwide/workdir/exercises/02_basic_calculator/04_panics)
[INFO] [stderr]     Checking static v0.1.0 (/opt/rustwide/workdir/exercises/07_threads/02_static)
[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)]` (part of `#[warn(unused)]`) 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: 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] 46 |     pub fn title(&self) -> &String {
[INFO] [stdout]    |            ^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 50 |     pub fn description(&self) -> &String {
[INFO] [stdout]    |            ^^^^^^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 54 |     pub fn status(&self) -> &Status {
[INFO] [stdout]    |            ^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(dead_code)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Checking threads v0.1.0 (/opt/rustwide/workdir/exercises/07_threads/01_threads)
[INFO] [stderr]     Checking if_else v0.1.0 (/opt/rustwide/workdir/exercises/02_basic_calculator/03_if_else)
[INFO] [stderr]     Checking overflow v0.1.0 (/opt/rustwide/workdir/exercises/02_basic_calculator/08_overflow)
[INFO] [stderr]     Checking intro_07 v0.1.0 (/opt/rustwide/workdir/exercises/07_threads/00_intro)
[INFO] [stderr]     Checking sized v0.1.0 (/opt/rustwide/workdir/exercises/04_traits/08_sized)
[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)]` (part of `#[warn(unused)]`) 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)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Checking intro_04 v0.1.0 (/opt/rustwide/workdir/exercises/05_ticket_v2/00_intro)
[INFO] [stderr]     Checking for_ v0.1.0 (/opt/rustwide/workdir/exercises/02_basic_calculator/07_for)
[INFO] [stderr]     Checking syntax v0.1.0 (/opt/rustwide/workdir/exercises/01_intro/01_syntax)
[INFO] [stderr]     Checking trait_ v0.1.0 (/opt/rustwide/workdir/exercises/04_traits/01_trait)
[INFO] [stderr]     Checking welcome_00 v0.1.0 (/opt/rustwide/workdir/exercises/01_intro/00_welcome)
[INFO] [stderr]     Checking clone v0.1.0 (/opt/rustwide/workdir/exercises/04_traits/11_clone)
[INFO] [stderr]     Checking destructor v0.1.0 (/opt/rustwide/workdir/exercises/03_ticket_v1/11_destructor)
[INFO] [stderr]     Checking drop v0.1.0 (/opt/rustwide/workdir/exercises/04_traits/13_drop)
[INFO] [stderr]     Checking intro_05 v0.1.0 (/opt/rustwide/workdir/exercises/06_ticket_management/00_intro)
[INFO] [stderr]     Checking regex-automata v0.4.7
[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)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Checking as_cast v0.1.0 (/opt/rustwide/workdir/exercises/02_basic_calculator/10_as_casting)
[INFO] [stderr]     Checking intro_02 v0.1.0 (/opt/rustwide/workdir/exercises/03_ticket_v1/00_intro)
[INFO] [stderr]     Checking struct_ v0.1.0 (/opt/rustwide/workdir/exercises/03_ticket_v1/01_struct)
[INFO] [stderr]     Checking arrays v0.1.0 (/opt/rustwide/workdir/exercises/06_ticket_management/01_arrays)
[INFO] [stderr]     Checking intro_08 v0.1.0 (/opt/rustwide/workdir/exercises/08_futures/00_intro)
[INFO] [stderr]     Checking leaking v0.1.0 (/opt/rustwide/workdir/exercises/07_threads/03_leak)
[INFO] [stderr]     Checking scoped_threads v0.1.0 (/opt/rustwide/workdir/exercises/07_threads/04_scoped_threads)
[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)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unreachable pattern
[INFO] [stdout]   --> exercises/06_ticket_management/01_arrays/src/lib.rs:27:9
[INFO] [stdout]    |
[INFO] [stdout] 27 |         _ => Err("Invalid Day".to_string())
[INFO] [stdout]    |         ^ no value can reach this
[INFO] [stdout]    |
[INFO] [stdout] note: multiple earlier patterns match some of the same values
[INFO] [stdout]   --> exercises/06_ticket_management/01_arrays/src/lib.rs:27:9
[INFO] [stdout]    |
[INFO] [stdout] 20 |         Weekday::Monday => Ok(0),
[INFO] [stdout]    |         --------------- matches some of the same values
[INFO] [stdout] 21 |         Weekday::Tuesday => Ok(1),
[INFO] [stdout]    |         ---------------- matches some of the same values
[INFO] [stdout] 22 |         Weekday::Wednesday => Ok(2),
[INFO] [stdout]    |         ------------------ matches some of the same values
[INFO] [stdout] 23 |         Weekday::Thursday => Ok(3),
[INFO] [stdout]    |         ----------------- matches some of the same values
[INFO] [stdout] ...
[INFO] [stdout] 27 |         _ => Err("Invalid Day".to_string())
[INFO] [stdout]    |         ^ ...and 3 other patterns collectively make this unreachable
[INFO] [stdout]    = note: `#[warn(unreachable_patterns)]` (part of `#[warn(unused)]`) on by default
[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)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unreachable pattern
[INFO] [stdout]   --> exercises/06_ticket_management/01_arrays/src/lib.rs:27:9
[INFO] [stdout]    |
[INFO] [stdout] 27 |         _ => Err("Invalid Day".to_string())
[INFO] [stdout]    |         ^ no value can reach this
[INFO] [stdout]    |
[INFO] [stdout] note: multiple earlier patterns match some of the same values
[INFO] [stdout]   --> exercises/06_ticket_management/01_arrays/src/lib.rs:27:9
[INFO] [stdout]    |
[INFO] [stdout] 20 |         Weekday::Monday => Ok(0),
[INFO] [stdout]    |         --------------- matches some of the same values
[INFO] [stdout] 21 |         Weekday::Tuesday => Ok(1),
[INFO] [stdout]    |         ---------------- matches some of the same values
[INFO] [stdout] 22 |         Weekday::Wednesday => Ok(2),
[INFO] [stdout]    |         ------------------ matches some of the same values
[INFO] [stdout] 23 |         Weekday::Thursday => Ok(3),
[INFO] [stdout]    |         ----------------- matches some of the same values
[INFO] [stdout] ...
[INFO] [stdout] 27 |         _ => Err("Invalid Day".to_string())
[INFO] [stdout]    |         ^ ...and 3 other patterns collectively make this unreachable
[INFO] [stdout]    = note: `#[warn(unreachable_patterns)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Checking references_in_memory v0.1.0 (/opt/rustwide/workdir/exercises/03_ticket_v1/10_references_in_memory)
[INFO] [stderr]     Checking derives v0.1.0 (/opt/rustwide/workdir/exercises/04_traits/04_derive)
[INFO] [stderr]     Checking resizing v0.1.0 (/opt/rustwide/workdir/exercises/06_ticket_management/03_resizing)
[INFO] [stderr]     Checking slice v0.1.0 (/opt/rustwide/workdir/exercises/06_ticket_management/10_slices)
[INFO] [stderr]     Checking deref v0.1.0 (/opt/rustwide/workdir/exercises/04_traits/07_deref)
[INFO] [stdout] warning: unused variable: `v`
[INFO] [stdout]  --> exercises/07_threads/04_scoped_threads/src/lib.rs:5:12
[INFO] [stdout]   |
[INFO] [stdout] 5 | pub fn sum(v: Vec<i32>) -> i32 {
[INFO] [stdout]   |            ^ help: if this is intentional, prefix it with an underscore: `_v`
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_variables)]` (part of `#[warn(unused)]`) 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)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Checking stack v0.1.0 (/opt/rustwide/workdir/exercises/03_ticket_v1/08_stack)
[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)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `v`
[INFO] [stdout]  --> exercises/07_threads/04_scoped_threads/src/lib.rs:5:12
[INFO] [stdout]   |
[INFO] [stdout] 5 | pub fn sum(v: Vec<i32>) -> i32 {
[INFO] [stdout]   |            ^ help: if this is intentional, prefix it with an underscore: `_v`
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_variables)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Checking assoc_vs_generic v0.1.0 (/opt/rustwide/workdir/exercises/04_traits/10_assoc_vs_generic)
[INFO] [stderr]     Checking vec v0.1.0 (/opt/rustwide/workdir/exercises/06_ticket_management/02_vec)
[INFO] [stderr]     Checking visibility v0.1.0 (/opt/rustwide/workdir/exercises/03_ticket_v1/04_visibility)
[INFO] [stdout] warning: struct `Ticket` is never constructed
[INFO] [stdout]   --> exercises/04_traits/04_derive/src/lib.rs:13:8
[INFO] [stdout]    |
[INFO] [stdout] 13 | struct Ticket {
[INFO] [stdout]    |        ^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(dead_code)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `std::fmt`
[INFO] [stdout]  --> exercises/05_ticket_v2/09_error_trait/src/lib.rs:6:5
[INFO] [stdout]   |
[INFO] [stdout] 6 | use std::fmt;
[INFO] [stdout]   |     ^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Checking factorial v0.1.0 (/opt/rustwide/workdir/exercises/02_basic_calculator/05_factorial)
[INFO] [stderr]     Checking integers v0.1.0 (/opt/rustwide/workdir/exercises/02_basic_calculator/01_integers)
[INFO] [stderr]     Checking if_let v0.1.0 (/opt/rustwide/workdir/exercises/05_ticket_v2/04_if_let)
[INFO] [stdout] warning: unused import: `std::error::Error`
[INFO] [stdout]  --> exercises/05_ticket_v2/09_error_trait/src/lib.rs:7:5
[INFO] [stdout]   |
[INFO] [stdout] 7 | use std::error::Error;
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Checking mut_slice v0.1.0 (/opt/rustwide/workdir/exercises/06_ticket_management/11_mutable_slices)
[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)]` (part of `#[warn(unused)]`) 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:31:4
[INFO] [stdout]    |
[INFO] [stdout] 31 | 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:42:8
[INFO] [stdout]    |
[INFO] [stdout] 42 | 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:49:6
[INFO] [stdout]    |
[INFO] [stdout] 49 | 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:56:12
[INFO] [stdout]    |
[INFO] [stdout] 55 | impl Ticket {
[INFO] [stdout]    | ----------- associated function in this implementation
[INFO] [stdout] 56 |     pub fn new(
[INFO] [stdout]    |            ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Checking heap v0.1.0 (/opt/rustwide/workdir/exercises/03_ticket_v1/09_heap)
[INFO] [stderr]     Checking encapsulation v0.1.0 (/opt/rustwide/workdir/exercises/03_ticket_v1/05_encapsulation)
[INFO] [stdout] warning: function `squared` is never used
[INFO] [stdout]  --> exercises/06_ticket_management/11_mutable_slices/src/lib.rs:4:4
[INFO] [stdout]   |
[INFO] [stdout] 4 | fn squared(sq: &mut [i32]) {
[INFO] [stdout]   |    ^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(dead_code)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Checking overloading v0.1.0 (/opt/rustwide/workdir/exercises/04_traits/03_operator_overloading)
[INFO] [stderr]     Checking variables v0.1.0 (/opt/rustwide/workdir/exercises/02_basic_calculator/02_variables)
[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)]` (part of `#[warn(unused)]`) 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] [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)]` (part of `#[warn(unused)]`) 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]     Checking ownership v0.1.0 (/opt/rustwide/workdir/exercises/03_ticket_v1/06_ownership)
[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)]` (part of `#[warn(unused)]`) 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)]` (part of `#[warn(unused)]`) 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)]` (part of `#[warn(unused)]`) 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]     Checking while_ v0.1.0 (/opt/rustwide/workdir/exercises/02_basic_calculator/06_while)
[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)]` (part of `#[warn(unused)]`) on by default
[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)]` (part of `#[warn(unused)]`) 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)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Checking match_ v0.1.0 (/opt/rustwide/workdir/exercises/05_ticket_v2/02_match)
[INFO] [stderr]     Checking intro_01 v0.1.0 (/opt/rustwide/workdir/exercises/02_basic_calculator/00_intro)
[INFO] [stderr]     Checking copy v0.1.0 (/opt/rustwide/workdir/exercises/04_traits/12_copy)
[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)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[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)]` (part of `#[warn(unused)]`) 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]     Checking from v0.1.0 (/opt/rustwide/workdir/exercises/04_traits/09_from)
[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)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Checking intro_03 v0.1.0 (/opt/rustwide/workdir/exercises/04_traits/00_intro)
[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)]` (part of `#[warn(unused)]`) 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)]` (part of `#[warn(unused)]`) 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)]` (part of `#[warn(unused)]`) 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]     Checking interior_mutability v0.1.0 (/opt/rustwide/workdir/exercises/07_threads/06_interior_mutability)
[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)]` (part of `#[warn(unused)]`) 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] 46 |     pub fn title(&self) -> &String {
[INFO] [stdout]    |            ^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 50 |     pub fn description(&self) -> &String {
[INFO] [stdout]    |            ^^^^^^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 54 |     pub fn status(&self) -> &Status {
[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)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[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)]` (part of `#[warn(unused)]`) 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)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Checking modules v0.1.0 (/opt/rustwide/workdir/exercises/03_ticket_v1/03_modules)
[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: 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] error: expected type, found `"not yet implemented"`
[INFO] [stdout]  --> exercises/07_threads/06_interior_mutability/src/lib.rs:9:14
[INFO] [stdout]   |
[INFO] [stdout] 9 |     counter: todo!(),
[INFO] [stdout]   |              ^^^^^^^
[INFO] [stdout]   |              |
[INFO] [stdout]   |              expected type
[INFO] [stdout]   |              in this macro invocation
[INFO] [stdout]   |              this macro call doesn't expand to a type
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: expected type, found `"not yet implemented"`
[INFO] [stdout]   --> exercises/07_threads/06_interior_mutability/src/lib.rs:13:35
[INFO] [stdout]    |
[INFO] [stdout] 13 |     pub fn new(value: T, counter: todo!()) -> Self {
[INFO] [stdout]    |                                   ^^^^^^^
[INFO] [stdout]    |                                   |
[INFO] [stdout]    |                                   expected type
[INFO] [stdout]    |                                   in this macro invocation
[INFO] [stdout]    |                                   this macro call doesn't expand to a type
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `std::cell::RefCell`
[INFO] [stdout]  --> exercises/07_threads/06_interior_mutability/src/lib.rs:4:5
[INFO] [stdout]   |
[INFO] [stdout] 4 | use std::cell::RefCell;
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `std::rc::Rc`
[INFO] [stdout]  --> exercises/07_threads/06_interior_mutability/src/lib.rs:5:5
[INFO] [stdout]   |
[INFO] [stdout] 5 | use std::rc::Rc;
[INFO] [stdout]   |     ^^^^^^^^^^^
[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)]` (part of `#[warn(unused)]`) 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:9:8
[INFO] [stdout]   |
[INFO] [stdout] 9 | 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:16:6
[INFO] [stdout]    |
[INFO] [stdout] 16 | 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:23:12
[INFO] [stdout]    |
[INFO] [stdout] 22 | impl Ticket {
[INFO] [stdout]    | ----------- associated function in this implementation
[INFO] [stdout] 23 |     pub fn new(title: String, description: String, status: Status) -> Result<Ticket, String> {
[INFO] [stdout]    |            ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr] error: could not compile `interior_mutability` (lib) due to 2 previous errors; 2 warnings emitted
[INFO] [stderr] warning: build failed, waiting for other jobs to finish...
[INFO] [stdout] error: expected type, found `"not yet implemented"`
[INFO] [stdout]  --> exercises/07_threads/06_interior_mutability/src/lib.rs:9:14
[INFO] [stdout]   |
[INFO] [stdout] 9 |     counter: todo!(),
[INFO] [stdout]   |              ^^^^^^^
[INFO] [stdout]   |              |
[INFO] [stdout]   |              expected type
[INFO] [stdout]   |              in this macro invocation
[INFO] [stdout]   |              this macro call doesn't expand to a type
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: expected type, found `"not yet implemented"`
[INFO] [stdout]   --> exercises/07_threads/06_interior_mutability/src/lib.rs:13:35
[INFO] [stdout]    |
[INFO] [stdout] 13 |     pub fn new(value: T, counter: todo!()) -> Self {
[INFO] [stdout]    |                                   ^^^^^^^
[INFO] [stdout]    |                                   |
[INFO] [stdout]    |                                   expected type
[INFO] [stdout]    |                                   in this macro invocation
[INFO] [stdout]    |                                   this macro call doesn't expand to a type
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0308]: mismatched types
[INFO] [stdout]   --> exercises/07_threads/06_interior_mutability/src/lib.rs:31:38
[INFO] [stdout]    |
[INFO] [stdout] 31 |         let _ = DropTracker::new((), Rc::clone(&counter));
[INFO] [stdout]    |                 ----------------     ^^^^^^^^^^^^^^^^^^^ expected `()`, found `Rc<RefCell<{integer}>>`
[INFO] [stdout]    |                 |
[INFO] [stdout]    |                 arguments to this function are incorrect
[INFO] [stdout]    |
[INFO] [stdout]    = note: expected unit type `()`
[INFO] [stdout]                  found struct `std::rc::Rc<std::cell::RefCell<{integer}>>`
[INFO] [stdout] note: associated function defined here
[INFO] [stdout]   --> exercises/07_threads/06_interior_mutability/src/lib.rs:13:12
[INFO] [stdout]    |
[INFO] [stdout] 13 |     pub fn new(value: T, counter: todo!()) -> Self {
[INFO] [stdout]    |            ^^^           ----------------
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0308]: mismatched types
[INFO] [stdout]   --> exercises/07_threads/06_interior_mutability/src/lib.rs:40:41
[INFO] [stdout]    |
[INFO] [stdout] 40 |             let a = DropTracker::new(5, Rc::clone(&counter));
[INFO] [stdout]    |                     ----------------    ^^^^^^^^^^^^^^^^^^^ expected `()`, found `Rc<RefCell<{integer}>>`
[INFO] [stdout]    |                     |
[INFO] [stdout]    |                     arguments to this function are incorrect
[INFO] [stdout]    |
[INFO] [stdout]    = note: expected unit type `()`
[INFO] [stdout]                  found struct `std::rc::Rc<std::cell::RefCell<{integer}>>`
[INFO] [stdout] note: associated function defined here
[INFO] [stdout]   --> exercises/07_threads/06_interior_mutability/src/lib.rs:13:12
[INFO] [stdout]    |
[INFO] [stdout] 13 |     pub fn new(value: T, counter: todo!()) -> Self {
[INFO] [stdout]    |            ^^^           ----------------
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0308]: mismatched types
[INFO] [stdout]   --> exercises/07_threads/06_interior_mutability/src/lib.rs:41:41
[INFO] [stdout]    |
[INFO] [stdout] 41 |             let b = DropTracker::new(6, Rc::clone(&counter));
[INFO] [stdout]    |                     ----------------    ^^^^^^^^^^^^^^^^^^^ expected `()`, found `Rc<RefCell<{integer}>>`
[INFO] [stdout]    |                     |
[INFO] [stdout]    |                     arguments to this function are incorrect
[INFO] [stdout]    |
[INFO] [stdout]    = note: expected unit type `()`
[INFO] [stdout]                  found struct `std::rc::Rc<std::cell::RefCell<{integer}>>`
[INFO] [stdout] note: associated function defined here
[INFO] [stdout]   --> exercises/07_threads/06_interior_mutability/src/lib.rs:13:12
[INFO] [stdout]    |
[INFO] [stdout] 13 |     pub fn new(value: T, counter: todo!()) -> Self {
[INFO] [stdout]    |            ^^^           ----------------
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] For more information about this error, try `rustc --explain E0308`.
[INFO] [stdout] 
[INFO] [stderr] error: could not compile `interior_mutability` (lib test) due to 5 previous errors
[INFO] running `Command { std: "docker" "inspect" "b03f8c15035481e5c3a0bbd7713a845257a6920474fc316795c2877d8037798d", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "b03f8c15035481e5c3a0bbd7713a845257a6920474fc316795c2877d8037798d", kill_on_drop: false }`
[INFO] [stdout] b03f8c15035481e5c3a0bbd7713a845257a6920474fc316795c2877d8037798d
