[INFO] cloning repository https://github.com/whj768702/100-exercises-to-learn-rust [INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/whj768702/100-exercises-to-learn-rust" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fwhj768702%2F100-exercises-to-learn-rust", kill_on_drop: false }` [INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fwhj768702%2F100-exercises-to-learn-rust'... [INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }` [INFO] [stdout] de1f029160d4e306d364662536d227537fba44a1 [INFO] checking whj768702/100-exercises-to-learn-rust/de1f029160d4e306d364662536d227537fba44a1 against master#f2d69d5a7c04617d122facd0a7a5bdde0af928ae for pr-138363 [INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fwhj768702%2F100-exercises-to-learn-rust" "/workspace/builds/worker-3-tc1/source", kill_on_drop: false }` [INFO] [stderr] Cloning into '/workspace/builds/worker-3-tc1/source'... [INFO] [stderr] done. [INFO] validating manifest of git repo https://github.com/whj768702/100-exercises-to-learn-rust on toolchain f2d69d5a7c04617d122facd0a7a5bdde0af928ae [INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+f2d69d5a7c04617d122facd0a7a5bdde0af928ae" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }` [INFO] started tweaking git repo https://github.com/whj768702/100-exercises-to-learn-rust [INFO] finished tweaking git repo https://github.com/whj768702/100-exercises-to-learn-rust [INFO] tweaked toml for git repo https://github.com/whj768702/100-exercises-to-learn-rust written to /workspace/builds/worker-3-tc1/source/Cargo.toml [INFO] crate git repo https://github.com/whj768702/100-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" "+f2d69d5a7c04617d122facd0a7a5bdde0af928ae" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }` [INFO] [stderr] Updating crates.io index [INFO] [stderr] Downloading crates ... [INFO] [stderr] Downloaded opener v0.7.1 [INFO] [stderr] Downloaded mdbook v0.4.40 [INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-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@sha256:1680c8fbd8dfb46fcd6d22e546df16ab0e007457dc29fcd9e987cdd5077fd1af" "/opt/rustwide/cargo-home/bin/cargo" "+f2d69d5a7c04617d122facd0a7a5bdde0af928ae" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }` [INFO] [stdout] 651f5d3071a67b82f0415b2171237c13a021ec9d2afabdf2b71689d57e22dab5 [INFO] running `Command { std: "docker" "start" "-a" "651f5d3071a67b82f0415b2171237c13a021ec9d2afabdf2b71689d57e22dab5", kill_on_drop: false }` [INFO] running `Command { std: "docker" "inspect" "651f5d3071a67b82f0415b2171237c13a021ec9d2afabdf2b71689d57e22dab5", kill_on_drop: false }` [INFO] running `Command { std: "docker" "rm" "-f" "651f5d3071a67b82f0415b2171237c13a021ec9d2afabdf2b71689d57e22dab5", kill_on_drop: false }` [INFO] [stdout] 651f5d3071a67b82f0415b2171237c13a021ec9d2afabdf2b71689d57e22dab5 [INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-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=forbid" "-e" "RUSTDOCFLAGS=--cap-lints=forbid" "-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@sha256:1680c8fbd8dfb46fcd6d22e546df16ab0e007457dc29fcd9e987cdd5077fd1af" "/opt/rustwide/cargo-home/bin/cargo" "+f2d69d5a7c04617d122facd0a7a5bdde0af928ae" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }` [INFO] [stdout] 170c9375d8d05a0388aad80896fb808318ced522d8de01806222ac83dce10319 [INFO] running `Command { std: "docker" "start" "-a" "170c9375d8d05a0388aad80896fb808318ced522d8de01806222ac83dce10319", kill_on_drop: false }` [INFO] [stderr] Compiling proc-macro2 v1.0.82 [INFO] [stderr] Compiling unicode-ident v1.0.12 [INFO] [stderr] 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[stderr] Checking maplit v1.0.2 [INFO] [stderr] Checking pulldown-cmark-escape v0.10.1 [INFO] [stderr] Checking fastrand v2.1.0 [INFO] [stderr] Checking url v2.5.0 [INFO] [stderr] Checking headers v0.3.9 [INFO] [stderr] Checking pathdiff v0.2.1 [INFO] [stderr] Checking shlex v1.3.0 [INFO] [stderr] Checking notify v6.1.1 [INFO] [stderr] Checking topological-sort v0.2.2 [INFO] [stderr] Checking packages v0.1.0 (/opt/rustwide/workdir/exercises/05_ticket_v2/10_packages) [INFO] [stderr] Checking outro_02 v0.1.0 (/opt/rustwide/workdir/exercises/03_ticket_v1/12_outro) [INFO] [stderr] Checking outro_03 v0.1.0 (/opt/rustwide/workdir/exercises/04_traits/14_outro) [INFO] [stderr] Checking static_assertions v1.1.0 [INFO] [stderr] Checking error_trait v0.1.0 (/opt/rustwide/workdir/exercises/05_ticket_v2/09_error_trait) [INFO] [stdout] warning: variants `InProgress` and `Done` are never constructed [INFO] [stdout] --> exercises/05_ticket_v2/09_error_trait/src/lib.rs:49:5 [INFO] [stdout] | [INFO] [stdout] 47 | enum Status { [INFO] [stdout] | ------ variants in this enum [INFO] [stdout] 48 | ToDo, [INFO] [stdout] 49 | InProgress { assigned_to: String }, [INFO] [stdout] | ^^^^^^^^^^ [INFO] [stdout] 50 | 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] Checking deps v0.1.0 (/opt/rustwide/workdir/exercises/05_ticket_v2/11_dependencies) [INFO] [stderr] Checking unwrap v0.1.0 (/opt/rustwide/workdir/exercises/05_ticket_v2/07_unwrap) [INFO] [stderr] Checking fallibility v0.1.0 (/opt/rustwide/workdir/exercises/05_ticket_v2/06_fallibility) [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] 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)]` 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 nullability v0.1.0 (/opt/rustwide/workdir/exercises/05_ticket_v2/05_nullability) [INFO] [stderr] Checking validation v0.1.0 (/opt/rustwide/workdir/exercises/03_ticket_v1/02_validation) [INFO] [stderr] Checking enum_ v0.1.0 (/opt/rustwide/workdir/exercises/05_ticket_v2/01_enum) [INFO] [stderr] Checking str_slice v0.1.0 (/opt/rustwide/workdir/exercises/04_traits/06_str_slice) [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:34:5 [INFO] [stdout] | [INFO] [stdout] 32 | enum Status { [INFO] [stdout] | ------ variants in this enum [INFO] [stdout] 33 | ToDo, [INFO] [stdout] 34 | InProgress { assigned_to: String }, [INFO] [stdout] | ^^^^^^^^^^ [INFO] [stdout] 35 | 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] Checking variants_with_data v0.1.0 (/opt/rustwide/workdir/exercises/05_ticket_v2/03_variants_with_data) [INFO] [stdout] warning: variants `InProgress` and `Done` are never constructed [INFO] [stdout] --> exercises/05_ticket_v2/07_unwrap/src/lib.rs:27:5 [INFO] [stdout] | [INFO] [stdout] 25 | enum Status { [INFO] [stdout] | ------ variants in this enum [INFO] [stdout] 26 | ToDo, [INFO] [stdout] 27 | InProgress { assigned_to: String }, [INFO] [stdout] | ^^^^^^^^^^ [INFO] [stdout] 28 | 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: 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] [stderr] Checking from v0.1.0 (/opt/rustwide/workdir/exercises/04_traits/09_from) [INFO] [stdout] warning: fields `title`, `description`, and `status` are never read [INFO] [stdout] --> exercises/03_ticket_v1/02_validation/src/lib.rs:2:5 [INFO] [stdout] | [INFO] [stdout] 1 | 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] Checking chrono v0.4.38 [INFO] [stderr] Checking scoped_threads v0.1.0 (/opt/rustwide/workdir/exercises/07_threads/04_scoped_threads) [INFO] [stderr] Checking threads v0.1.0 (/opt/rustwide/workdir/exercises/07_threads/01_threads) [INFO] [stderr] Checking leaking v0.1.0 (/opt/rustwide/workdir/exercises/07_threads/03_leak) [INFO] [stderr] Checking overloading v0.1.0 (/opt/rustwide/workdir/exercises/04_traits/03_operator_overloading) [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] [stderr] Checking intro_01 v0.1.0 (/opt/rustwide/workdir/exercises/02_basic_calculator/00_intro) [INFO] [stderr] Checking intro_08 v0.1.0 (/opt/rustwide/workdir/exercises/08_futures/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: 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 { [INFO] [stdout] | ^ help: if this is intentional, prefix it with an underscore: `_v` [INFO] [stdout] | [INFO] [stdout] = note: `#[warn(unused_variables)]` on by default [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: unused import: `std::thread` [INFO] [stdout] --> exercises/07_threads/03_leak/src/lib.rs:6:5 [INFO] [stdout] | [INFO] [stdout] 6 | use std::thread; [INFO] [stdout] | ^^^^^^^^^^^ [INFO] [stdout] | [INFO] [stdout] = note: `#[warn(unused_imports)]` on by default [INFO] [stdout] [INFO] [stdout] [INFO] [stderr] Checking arrays v0.1.0 (/opt/rustwide/workdir/exercises/06_ticket_management/01_arrays) [INFO] [stdout] warning: unused variable: `v` [INFO] [stdout] --> exercises/07_threads/03_leak/src/lib.rs:8:12 [INFO] [stdout] | [INFO] [stdout] 8 | pub fn sum(v: Vec) -> i32 { [INFO] [stdout] | ^ help: if this is intentional, prefix it with an underscore: `_v` [INFO] [stdout] | [INFO] [stdout] = note: `#[warn(unused_variables)]` on by default [INFO] [stdout] [INFO] [stdout] [INFO] [stderr] Checking if_let v0.1.0 (/opt/rustwide/workdir/exercises/05_ticket_v2/04_if_let) [INFO] [stderr] Checking deref v0.1.0 (/opt/rustwide/workdir/exercises/04_traits/07_deref) [INFO] [stderr] Checking integers v0.1.0 (/opt/rustwide/workdir/exercises/02_basic_calculator/01_integers) [INFO] [stderr] Checking orphan v0.1.0 (/opt/rustwide/workdir/exercises/04_traits/02_orphan_rule) [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: unused import: `std::thread` [INFO] [stdout] --> exercises/07_threads/01_threads/src/lib.rs:15:5 [INFO] [stdout] | [INFO] [stdout] 15 | use std::thread; [INFO] [stdout] | ^^^^^^^^^^^ [INFO] [stdout] | [INFO] [stdout] = note: `#[warn(unused_imports)]` on by default [INFO] [stdout] [INFO] [stdout] [INFO] [stderr] Checking match_ v0.1.0 (/opt/rustwide/workdir/exercises/05_ticket_v2/02_match) [INFO] [stdout] warning: unused variable: `day` [INFO] [stdout] --> exercises/06_ticket_management/01_arrays/src/lib.rs:22:35 [INFO] [stdout] | [INFO] [stdout] 22 | pub fn get_temperature(&self, day: Weekday) -> Option { [INFO] [stdout] | ^^^ help: if this is intentional, prefix it with an underscore: `_day` [INFO] [stdout] | [INFO] [stdout] = note: `#[warn(unused_variables)]` on by default [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused variable: `day` [INFO] [stdout] --> exercises/06_ticket_management/01_arrays/src/lib.rs:26:39 [INFO] [stdout] | [INFO] [stdout] 26 | pub fn set_temperature(&mut self, day: Weekday, temperature: i32) { [INFO] [stdout] | ^^^ help: if this is intentional, prefix it with an underscore: `_day` [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused variable: `temperature` [INFO] [stdout] --> exercises/06_ticket_management/01_arrays/src/lib.rs:26:53 [INFO] [stdout] | [INFO] [stdout] 26 | pub fn set_temperature(&mut self, day: Weekday, temperature: i32) { [INFO] [stdout] | ^^^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_temperature` [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused variable: `v` [INFO] [stdout] --> exercises/07_threads/01_threads/src/lib.rs:17:12 [INFO] [stdout] | [INFO] [stdout] 17 | pub fn sum(v: Vec) -> i32 { [INFO] [stdout] | ^ help: if this is intentional, prefix it with an underscore: `_v` [INFO] [stdout] | [INFO] [stdout] = note: `#[warn(unused_variables)]` on by default [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: function `compute` is never used [INFO] [stdout] --> exercises/02_basic_calculator/01_integers/src/lib.rs:1:4 [INFO] [stdout] | [INFO] [stdout] 1 | fn compute(a: u32, b: u32) -> u32 { [INFO] [stdout] | ^^^^^^^ [INFO] [stdout] | [INFO] [stdout] = note: `#[warn(dead_code)]` on by default [INFO] [stdout] [INFO] [stdout] [INFO] [stderr] Checking intro_03 v0.1.0 (/opt/rustwide/workdir/exercises/04_traits/00_intro) [INFO] [stderr] Checking while_ v0.1.0 (/opt/rustwide/workdir/exercises/02_basic_calculator/06_while) [INFO] [stderr] Checking for_ v0.1.0 (/opt/rustwide/workdir/exercises/02_basic_calculator/07_for) [INFO] [stderr] Checking struct_ v0.1.0 (/opt/rustwide/workdir/exercises/03_ticket_v1/01_struct) [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:25:8 [INFO] [stdout] | [INFO] [stdout] 25 | 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:32:6 [INFO] [stdout] | [INFO] [stdout] 32 | 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:39:12 [INFO] [stdout] | [INFO] [stdout] 38 | impl Ticket { [INFO] [stdout] | ----------- associated function in this implementation [INFO] [stdout] 39 | pub fn new( [INFO] [stdout] | ^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stderr] Checking encapsulation v0.1.0 (/opt/rustwide/workdir/exercises/03_ticket_v1/05_encapsulation) [INFO] [stderr] Compiling phf_generator v0.10.0 [INFO] [stdout] warning: struct `Order` is never constructed [INFO] [stdout] --> exercises/03_ticket_v1/01_struct/src/lib.rs:7:8 [INFO] [stdout] | [INFO] [stdout] 7 | struct Order { [INFO] [stdout] | ^^^^^ [INFO] [stdout] | [INFO] [stdout] = note: `#[warn(dead_code)]` on by default [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: method `is_available` is never used [INFO] [stdout] --> exercises/03_ticket_v1/01_struct/src/lib.rs:12:8 [INFO] [stdout] | [INFO] [stdout] 11 | impl Order { [INFO] [stdout] | ---------- method in this implementation [INFO] [stdout] 12 | fn is_available(self) -> bool { [INFO] [stdout] | ^^^^^^^^^^^^ [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] [stderr] Compiling phf_generator v0.11.2 [INFO] [stderr] Checking clone v0.1.0 (/opt/rustwide/workdir/exercises/04_traits/11_clone) [INFO] [stdout] warning: field `border` is never read [INFO] [stdout] --> exercises/05_ticket_v2/04_if_let/src/lib.rs:5:14 [INFO] [stdout] | [INFO] [stdout] 5 | 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:6:17 [INFO] [stdout] | [INFO] [stdout] 6 | Rectangle { width: f64, height: f64 }, [INFO] [stdout] | --------- ^^^^^ ^^^^^^ [INFO] [stdout] | | [INFO] [stdout] | fields in this variant [INFO] [stdout] [INFO] [stdout] [INFO] [stderr] Checking terminal_size v0.3.0 [INFO] [stderr] Checking tempfile v3.10.1 [INFO] [stderr] Checking variables v0.1.0 (/opt/rustwide/workdir/exercises/02_basic_calculator/02_variables) [INFO] [stderr] Checking intro_07 v0.1.0 (/opt/rustwide/workdir/exercises/07_threads/00_intro) [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] Checking copy v0.1.0 (/opt/rustwide/workdir/exercises/04_traits/12_copy) [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 phf_codegen v0.11.2 [INFO] [stderr] Compiling string_cache_codegen v0.5.2 [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] Checking panics v0.1.0 (/opt/rustwide/workdir/exercises/02_basic_calculator/04_panics) [INFO] [stderr] Checking syntax v0.1.0 (/opt/rustwide/workdir/exercises/01_intro/01_syntax) [INFO] [stderr] Checking sized v0.1.0 (/opt/rustwide/workdir/exercises/04_traits/08_sized) [INFO] [stderr] Checking clap_builder v4.5.2 [INFO] [stderr] Checking drop v0.1.0 (/opt/rustwide/workdir/exercises/04_traits/13_drop) [INFO] [stdout] warning: unnecessary parentheses around `if` condition [INFO] [stdout] --> exercises/02_basic_calculator/04_panics/src/lib.rs:5:8 [INFO] [stdout] | [INFO] [stdout] 5 | if (time_elapsed == 0) { [INFO] [stdout] | ^ ^ [INFO] [stdout] | [INFO] [stdout] = note: `#[warn(unused_parens)]` on by default [INFO] [stdout] help: remove these parentheses [INFO] [stdout] | [INFO] [stdout] 5 - if (time_elapsed == 0) { [INFO] [stdout] 5 + if time_elapsed == 0 { [INFO] [stdout] | [INFO] [stdout] [INFO] [stdout] [INFO] [stderr] Checking sync v0.1.0 (/opt/rustwide/workdir/exercises/07_threads/14_sync) [INFO] [stdout] warning: function `compute` is never used [INFO] [stdout] --> exercises/01_intro/01_syntax/src/lib.rs:6:4 [INFO] [stdout] | [INFO] [stdout] 6 | fn compute(a: u32, b: u32) -> u32 { [INFO] [stdout] | ^^^^^^^ [INFO] [stdout] | [INFO] [stdout] = note: `#[warn(dead_code)]` on by default [INFO] [stdout] [INFO] [stdout] [INFO] [stderr] Checking notify-debouncer-mini v0.4.1 [INFO] [stdout] warning: unused import: `std::thread` [INFO] [stdout] --> exercises/07_threads/01_threads/src/lib.rs:15:5 [INFO] [stdout] | [INFO] [stdout] 15 | use std::thread; [INFO] [stdout] | ^^^^^^^^^^^ [INFO] [stdout] | [INFO] [stdout] = note: `#[warn(unused_imports)]` on by default [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: function `speed` is never used [INFO] [stdout] --> exercises/02_basic_calculator/04_panics/src/lib.rs:3:4 [INFO] [stdout] | [INFO] [stdout] 3 | fn speed(start: u32, end: u32, time_elapsed: u32) -> u32 { [INFO] [stdout] | ^^^^^ [INFO] [stdout] | [INFO] [stdout] = note: `#[warn(dead_code)]` on by default [INFO] [stdout] [INFO] [stdout] [INFO] [stderr] Checking derives v0.1.0 (/opt/rustwide/workdir/exercises/04_traits/04_derive) [INFO] [stderr] Checking tryfrom v0.1.0 (/opt/rustwide/workdir/exercises/05_ticket_v2/13_try_from) [INFO] [stderr] Checking destructor v0.1.0 (/opt/rustwide/workdir/exercises/03_ticket_v1/11_destructor) [INFO] [stdout] warning: unused variable: `v` [INFO] [stdout] --> exercises/07_threads/01_threads/src/lib.rs:17:12 [INFO] [stdout] | [INFO] [stdout] 17 | pub fn sum(v: Vec) -> i32 { [INFO] [stdout] | ^ help: if this is intentional, prefix it with an underscore: `_v` [INFO] [stdout] | [INFO] [stdout] = note: `#[warn(unused_variables)]` on by default [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: field `price` is never read [INFO] [stdout] --> exercises/03_ticket_v1/01_struct/src/lib.rs:8:5 [INFO] [stdout] | [INFO] [stdout] 7 | struct Order { [INFO] [stdout] | ----- field in this struct [INFO] [stdout] 8 | price: u32, [INFO] [stdout] | ^^^^^ [INFO] [stdout] | [INFO] [stdout] = note: `#[warn(dead_code)]` on by default [INFO] [stdout] [INFO] [stdout] [INFO] [stderr] Checking ownership v0.1.0 (/opt/rustwide/workdir/exercises/03_ticket_v1/06_ownership) [INFO] [stdout] warning: unused variable: `bomb` [INFO] [stdout] --> exercises/04_traits/13_drop/src/lib.rs:32:13 [INFO] [stdout] | [INFO] [stdout] 32 | 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] Checking stack v0.1.0 (/opt/rustwide/workdir/exercises/03_ticket_v1/08_stack) [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: 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] Checking saturating v0.1.0 (/opt/rustwide/workdir/exercises/02_basic_calculator/09_saturating) [INFO] [stderr] Checking interior_mutability v0.1.0 (/opt/rustwide/workdir/exercises/07_threads/06_interior_mutability) [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] = note: this error originates in the macro `todo` (in Nightly builds, run with -Z macro-backtrace for more info) [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] = note: this error originates in the macro `todo` (in Nightly builds, run with -Z macro-backtrace for more info) [INFO] [stdout] [INFO] [stdout] [INFO] [stderr] Checking heap v0.1.0 (/opt/rustwide/workdir/exercises/03_ticket_v1/09_heap) [INFO] [stderr] Checking slice v0.1.0 (/opt/rustwide/workdir/exercises/06_ticket_management/10_slices) [INFO] [stderr] Checking static v0.1.0 (/opt/rustwide/workdir/exercises/07_threads/02_static) [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>` [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>` [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>` [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>` [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] 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] 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>` [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>` [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] Checking trait_bounds v0.1.0 (/opt/rustwide/workdir/exercises/04_traits/05_trait_bounds) [INFO] [stderr] error: could not compile `interior_mutability` (lib test) due to 5 previous errors [INFO] [stderr] warning: build failed, waiting for other jobs to finish... [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: unused import: `std::thread` [INFO] [stdout] --> exercises/07_threads/02_static/src/lib.rs:4:5 [INFO] [stdout] | [INFO] [stdout] 4 | use std::thread; [INFO] [stdout] | ^^^^^^^^^^^ [INFO] [stdout] | [INFO] [stdout] = note: `#[warn(unused_imports)]` on by default [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused import: `super::*` [INFO] [stdout] --> exercises/06_ticket_management/10_slices/src/lib.rs:6:9 [INFO] [stdout] | [INFO] [stdout] 6 | use super::*; [INFO] [stdout] | ^^^^^^^^ [INFO] [stdout] | [INFO] [stdout] = note: `#[warn(unused_imports)]` on by default [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused variable: `slice` [INFO] [stdout] --> exercises/07_threads/02_static/src/lib.rs:6:12 [INFO] [stdout] | [INFO] [stdout] 6 | pub fn sum(slice: &'static [i32]) -> i32 { [INFO] [stdout] | ^^^^^ help: if this is intentional, prefix it with an underscore: `_slice` [INFO] [stdout] | [INFO] [stdout] = note: `#[warn(unused_variables)]` on by default [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] error[E0425]: cannot find function `sum` in this scope [INFO] [stdout] --> exercises/06_ticket_management/10_slices/src/lib.rs:11:20 [INFO] [stdout] | [INFO] [stdout] 11 | assert_eq!(sum(&v), 0); [INFO] [stdout] | ^^^ not found in this scope [INFO] [stdout] | [INFO] [stdout] help: use the `.` operator to call the method `Stats::sum` on `&[_]` [INFO] [stdout] | [INFO] [stdout] 11 - assert_eq!(sum(&v), 0); [INFO] [stdout] 11 + assert_eq!((&v).sum(), 0); [INFO] [stdout] | [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] error[E0425]: cannot find function `sum` in this scope [INFO] [stdout] --> exercises/06_ticket_management/10_slices/src/lib.rs:17:20 [INFO] [stdout] | [INFO] [stdout] 17 | assert_eq!(sum(&v), 1); [INFO] [stdout] | ^^^ not found in this scope [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] error[E0425]: cannot find function `sum` in this scope [INFO] [stdout] --> exercises/06_ticket_management/10_slices/src/lib.rs:23:20 [INFO] [stdout] | [INFO] [stdout] 23 | assert_eq!(sum(&v), 15); [INFO] [stdout] | ^^^ not found in this scope [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] error[E0425]: cannot find function `sum` in this scope [INFO] [stdout] --> exercises/06_ticket_management/10_slices/src/lib.rs:29:20 [INFO] [stdout] | [INFO] [stdout] 29 | assert_eq!(sum(&v), 15); [INFO] [stdout] | ^^^ not found in this scope [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] For more information about this error, try `rustc --explain E0425`. [INFO] [stdout] [INFO] [stderr] error: could not compile `slice` (lib test) due to 4 previous errors; 1 warning emitted [INFO] running `Command { std: "docker" "inspect" "170c9375d8d05a0388aad80896fb808318ced522d8de01806222ac83dce10319", kill_on_drop: false }` [INFO] running `Command { std: "docker" "rm" "-f" "170c9375d8d05a0388aad80896fb808318ced522d8de01806222ac83dce10319", kill_on_drop: false }` [INFO] [stdout] 170c9375d8d05a0388aad80896fb808318ced522d8de01806222ac83dce10319