[INFO] cloning repository https://github.com/zcxGGmu/rustlings [INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/zcxGGmu/rustlings" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FzcxGGmu%2Frustlings", kill_on_drop: false }` [INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FzcxGGmu%2Frustlings'... [INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }` [INFO] [stdout] b6d2072632025a4243580232fcda4821e1631105 [INFO] building zcxGGmu/rustlings against try#9b5e8b16bd1c4acf4cf8e6880368314cf021a987+rustflags=-Dtail-expr-drop-order for pr-134523 [INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FzcxGGmu%2Frustlings" "/workspace/builds/worker-2-tc2/source", kill_on_drop: false }` [INFO] [stderr] Cloning into '/workspace/builds/worker-2-tc2/source'... [INFO] [stderr] done. 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[INFO] validating manifest of git repo https://github.com/zcxGGmu/rustlings on toolchain 9b5e8b16bd1c4acf4cf8e6880368314cf021a987 [INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+9b5e8b16bd1c4acf4cf8e6880368314cf021a987" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }` [INFO] started tweaking git repo https://github.com/zcxGGmu/rustlings [INFO] finished tweaking git repo https://github.com/zcxGGmu/rustlings [INFO] tweaked toml for git repo https://github.com/zcxGGmu/rustlings written to /workspace/builds/worker-2-tc2/source/Cargo.toml [INFO] crate git repo https://github.com/zcxGGmu/rustlings 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" "+9b5e8b16bd1c4acf4cf8e6880368314cf021a987" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }` [INFO] [stderr] Blocking waiting for file lock on package cache [INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-tc2/source:/opt/rustwide/workdir:ro,Z" "-v" "/var/lib/crater-agent-workspace/cargo-home:/opt/rustwide/cargo-home:ro,Z" "-v" "/var/lib/crater-agent-workspace/rustup-home:/opt/rustwide/rustup-home:ro,Z" "-e" "SOURCE_DIR=/opt/rustwide/workdir" "-e" "CARGO_TARGET_DIR=/opt/rustwide/target" "-e" "CARGO_HOME=/opt/rustwide/cargo-home" "-e" "RUSTUP_HOME=/opt/rustwide/rustup-home" "-w" "/opt/rustwide/workdir" "-m" "1610612736" "--user" "0:0" "--network" "none" "ghcr.io/rust-lang/crates-build-env/linux@sha256:f3a9d4ad9d972b27faf3965f35b62e55ba32bbce8f20bc8fe909558a86702fde" "/opt/rustwide/cargo-home/bin/cargo" "+9b5e8b16bd1c4acf4cf8e6880368314cf021a987" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }` [INFO] [stdout] a83e9e4791c8d76d8781ecff80473dd02a2992fe14dd1bc86807fcda043edd56 [INFO] running `Command { std: "docker" "start" "-a" "a83e9e4791c8d76d8781ecff80473dd02a2992fe14dd1bc86807fcda043edd56", kill_on_drop: false }` [INFO] running `Command { std: "docker" "inspect" "a83e9e4791c8d76d8781ecff80473dd02a2992fe14dd1bc86807fcda043edd56", kill_on_drop: false }` [INFO] running `Command { std: "docker" "rm" "-f" "a83e9e4791c8d76d8781ecff80473dd02a2992fe14dd1bc86807fcda043edd56", kill_on_drop: false }` [INFO] [stdout] a83e9e4791c8d76d8781ecff80473dd02a2992fe14dd1bc86807fcda043edd56 [INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-tc2/source:/opt/rustwide/workdir:ro,Z" "-v" "/var/lib/crater-agent-workspace/cargo-home:/opt/rustwide/cargo-home:ro,Z" "-v" "/var/lib/crater-agent-workspace/rustup-home:/opt/rustwide/rustup-home:ro,Z" "-e" "SOURCE_DIR=/opt/rustwide/workdir" "-e" "CARGO_TARGET_DIR=/opt/rustwide/target" "-e" "CARGO_INCREMENTAL=0" "-e" "RUST_BACKTRACE=full" "-e" "RUSTFLAGS=--cap-lints=forbid -Dtail-expr-drop-order" "-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:f3a9d4ad9d972b27faf3965f35b62e55ba32bbce8f20bc8fe909558a86702fde" "/opt/rustwide/cargo-home/bin/cargo" "+9b5e8b16bd1c4acf4cf8e6880368314cf021a987" "build" "--frozen" "--message-format=json", kill_on_drop: false }` [INFO] [stdout] 7560d5634326e1e0bf8d9533697442b0aa125c3a4aae7a7d22cd21ba4f12a0fd [INFO] running `Command { std: "docker" "start" "-a" "7560d5634326e1e0bf8d9533697442b0aa125c3a4aae7a7d22cd21ba4f12a0fd", kill_on_drop: false }` [INFO] [stderr] Compiling exercises v0.0.0 (/opt/rustwide/workdir) [INFO] [stdout] warning: trait `AppendBar` is never used [INFO] [stdout] --> solutions/15_traits/traits2.rs:1:7 [INFO] [stdout] | [INFO] [stdout] 1 | trait AppendBar { [INFO] [stdout] | ^^^^^^^^^ [INFO] [stdout] | [INFO] [stdout] = note: `#[warn(dead_code)]` on by default [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: struct `Point` is never constructed [INFO] [stdout] --> exercises/08_enums/enums3.rs:1:8 [INFO] [stdout] | [INFO] [stdout] 1 | struct Point { [INFO] [stdout] | ^^^^^ [INFO] [stdout] | [INFO] [stdout] = note: `#[warn(dead_code)]` on by default [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: enum `Message` is never used [INFO] [stdout] --> exercises/08_enums/enums3.rs:6:6 [INFO] [stdout] | [INFO] [stdout] 6 | enum Message { [INFO] [stdout] | ^^^^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: struct `State` is never constructed [INFO] [stdout] --> exercises/08_enums/enums3.rs:27:8 [INFO] [stdout] | [INFO] [stdout] 27 | struct State { [INFO] [stdout] | ^^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: methods `resize`, `move_position`, `echo`, `change_color`, `quit`, and `process` are never used [INFO] [stdout] --> exercises/08_enums/enums3.rs:38:8 [INFO] [stdout] | [INFO] [stdout] 37 | impl State { [INFO] [stdout] | ---------- methods in this implementation [INFO] [stdout] 38 | fn resize(&mut self, width: u64, height: u64) { [INFO] [stdout] | ^^^^^^ [INFO] [stdout] ... [INFO] [stdout] 43 | fn move_position(&mut self, point: Point) { [INFO] [stdout] | ^^^^^^^^^^^^^ [INFO] [stdout] ... [INFO] [stdout] 47 | fn echo(&mut self, s: String) { [INFO] [stdout] | ^^^^ [INFO] [stdout] ... [INFO] [stdout] 51 | fn change_color(&mut self, red: u8, green: u8, blue: u8) { [INFO] [stdout] | ^^^^^^^^^^^^ [INFO] [stdout] ... [INFO] [stdout] 55 | fn quit(&mut self) { [INFO] [stdout] | ^^^^ [INFO] [stdout] ... [INFO] [stdout] 78 | fn process(&mut self, message: Message) { [INFO] [stdout] | ^^^^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: function `factorial` is never used [INFO] [stdout] --> exercises/18_iterators/iterators4.rs:1:4 [INFO] [stdout] | [INFO] [stdout] 1 | fn factorial(num: u64) -> u64 { [INFO] [stdout] | ^^^^^^^^^ [INFO] [stdout] | [INFO] [stdout] = note: `#[warn(dead_code)]` on by default [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: enum `Progress` is never used [INFO] [stdout] --> solutions/18_iterators/iterators5.rs:10:6 [INFO] [stdout] | [INFO] [stdout] 10 | enum Progress { [INFO] [stdout] | ^^^^^^^^ [INFO] [stdout] | [INFO] [stdout] = note: `#[warn(dead_code)]` on by default [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: function `count_for` is never used [INFO] [stdout] --> solutions/18_iterators/iterators5.rs:16:4 [INFO] [stdout] | [INFO] [stdout] 16 | fn count_for(map: &HashMap, value: Progress) -> usize { [INFO] [stdout] | ^^^^^^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: function `count_iterator` is never used [INFO] [stdout] --> solutions/18_iterators/iterators5.rs:26:4 [INFO] [stdout] | [INFO] [stdout] 26 | fn count_iterator(map: &HashMap, value: Progress) -> usize { [INFO] [stdout] | ^^^^^^^^^^^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: function `count_collection_for` is never used [INFO] [stdout] --> solutions/18_iterators/iterators5.rs:32:4 [INFO] [stdout] | [INFO] [stdout] 32 | fn count_collection_for(collection: &[HashMap], value: Progress) -> usize { [INFO] [stdout] | ^^^^^^^^^^^^^^^^^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: function `count_collection_iterator` is never used [INFO] [stdout] --> solutions/18_iterators/iterators5.rs:40:4 [INFO] [stdout] | [INFO] [stdout] 40 | fn count_collection_iterator(collection: &[HashMap], value: Progress) -> usize { [INFO] [stdout] | ^^^^^^^^^^^^^^^^^^^^^^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: function `count_collection_iterator_flat` is never used [INFO] [stdout] --> solutions/18_iterators/iterators5.rs:53:4 [INFO] [stdout] | [INFO] [stdout] 53 | fn count_collection_iterator_flat( [INFO] [stdout] | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: function `fill_vec` is never used [INFO] [stdout] --> exercises/06_move_semantics/move_semantics3.rs:2:4 [INFO] [stdout] | [INFO] [stdout] 2 | fn fill_vec(mut vec: Vec) -> Vec { [INFO] [stdout] | ^^^^^^^^ [INFO] [stdout] | [INFO] [stdout] = note: `#[warn(dead_code)]` on by default [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: function `fill_vec` is never used [INFO] [stdout] --> solutions/06_move_semantics/move_semantics1.rs:1:4 [INFO] [stdout] | [INFO] [stdout] 1 | fn fill_vec(vec: Vec) -> Vec { [INFO] [stdout] | ^^^^^^^^ [INFO] [stdout] | [INFO] [stdout] = note: `#[warn(dead_code)]` on by default [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: struct `ColorRegularStruct` is never constructed [INFO] [stdout] --> exercises/07_structs/structs1.rs:1:8 [INFO] [stdout] | [INFO] [stdout] 1 | struct ColorRegularStruct { [INFO] [stdout] | ^^^^^^^^^^^^^^^^^^ [INFO] [stdout] | [INFO] [stdout] = note: `#[warn(dead_code)]` on by default [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: struct `ColorTupleStruct` is never constructed [INFO] [stdout] --> exercises/07_structs/structs1.rs:10:8 [INFO] [stdout] | [INFO] [stdout] 10 | struct ColorTupleStruct(u32, u32, u32); [INFO] [stdout] | ^^^^^^^^^^^^^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: struct `UnitStruct` is never constructed [INFO] [stdout] --> exercises/07_structs/structs1.rs:13:8 [INFO] [stdout] | [INFO] [stdout] 13 | struct UnitStruct; [INFO] [stdout] | ^^^^^^^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: function `is_even` is never used [INFO] [stdout] --> exercises/17_tests/tests1.rs:4:4 [INFO] [stdout] | [INFO] [stdout] 4 | fn is_even(n: i64) -> bool { [INFO] [stdout] | ^^^^^^^ [INFO] [stdout] | [INFO] [stdout] = note: `#[warn(dead_code)]` on by default [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: function `byte_counter` is never used [INFO] [stdout] --> solutions/23_conversions/as_ref_mut.rs:6:4 [INFO] [stdout] | [INFO] [stdout] 6 | fn byte_counter>(arg: T) -> usize { [INFO] [stdout] | ^^^^^^^^^^^^ [INFO] [stdout] | [INFO] [stdout] = note: `#[warn(dead_code)]` on by default [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: function `char_counter` is never used [INFO] [stdout] --> solutions/23_conversions/as_ref_mut.rs:11:4 [INFO] [stdout] | [INFO] [stdout] 11 | fn char_counter>(arg: T) -> usize { [INFO] [stdout] | ^^^^^^^^^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: function `num_sq` is never used [INFO] [stdout] --> solutions/23_conversions/as_ref_mut.rs:16:4 [INFO] [stdout] | [INFO] [stdout] 16 | fn num_sq>(arg: &mut T) { [INFO] [stdout] | ^^^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: function `is_even` is never used [INFO] [stdout] --> solutions/17_tests/tests1.rs:4:4 [INFO] [stdout] | [INFO] [stdout] 4 | fn is_even(n: i64) -> bool { [INFO] [stdout] | ^^^^^^^ [INFO] [stdout] | [INFO] [stdout] = note: `#[warn(dead_code)]` on by default [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: trait `SomeTrait` is never used [INFO] [stdout] --> exercises/15_traits/traits5.rs:1:7 [INFO] [stdout] | [INFO] [stdout] 1 | trait SomeTrait { [INFO] [stdout] | ^^^^^^^^^ [INFO] [stdout] | [INFO] [stdout] = note: `#[warn(dead_code)]` on by default [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: trait `OtherTrait` is never used [INFO] [stdout] --> exercises/15_traits/traits5.rs:7:7 [INFO] [stdout] | [INFO] [stdout] 7 | trait OtherTrait { [INFO] [stdout] | ^^^^^^^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: struct `SomeStruct` is never constructed [INFO] [stdout] --> exercises/15_traits/traits5.rs:13:8 [INFO] [stdout] | [INFO] [stdout] 13 | struct SomeStruct; [INFO] [stdout] | ^^^^^^^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: struct `OtherStruct` is never constructed [INFO] [stdout] --> exercises/15_traits/traits5.rs:17:8 [INFO] [stdout] | [INFO] [stdout] 17 | struct OtherStruct; [INFO] [stdout] | ^^^^^^^^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: function `some_func` is never used [INFO] [stdout] --> exercises/15_traits/traits5.rs:22:4 [INFO] [stdout] | [INFO] [stdout] 22 | fn some_func(item: impl SomeTrait + OtherTrait) -> bool { [INFO] [stdout] | ^^^^^^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: struct `Queue` is never constructed [INFO] [stdout] --> exercises/20_threads/threads3.rs:4:8 [INFO] [stdout] | [INFO] [stdout] 4 | struct Queue { [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/20_threads/threads3.rs:11:8 [INFO] [stdout] | [INFO] [stdout] 10 | impl Queue { [INFO] [stdout] | ---------- associated function in this implementation [INFO] [stdout] 11 | fn new() -> Self { [INFO] [stdout] | ^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: function `send_tx` is never used [INFO] [stdout] --> exercises/20_threads/threads3.rs:20:4 [INFO] [stdout] | [INFO] [stdout] 20 | fn send_tx(q: Queue, tx: mpsc::Sender) { [INFO] [stdout] | ^^^^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: function `vec_loop` is never used [INFO] [stdout] --> solutions/05_vecs/vecs2.rs:1:4 [INFO] [stdout] | [INFO] [stdout] 1 | fn vec_loop(input: &[i32]) -> Vec { [INFO] [stdout] | ^^^^^^^^ [INFO] [stdout] | [INFO] [stdout] = note: `#[warn(dead_code)]` on by default [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: function `vec_map_example` is never used [INFO] [stdout] --> solutions/05_vecs/vecs2.rs:11:4 [INFO] [stdout] | [INFO] [stdout] 11 | fn vec_map_example(input: &[i32]) -> Vec { [INFO] [stdout] | ^^^^^^^^^^^^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: function `vec_map` is never used [INFO] [stdout] --> solutions/05_vecs/vecs2.rs:18:4 [INFO] [stdout] | [INFO] [stdout] 18 | fn vec_map(input: &[i32]) -> Vec { [INFO] [stdout] | ^^^^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: struct `Team` is never constructed [INFO] [stdout] --> exercises/11_hashmaps/hashmaps3.rs:13:8 [INFO] [stdout] | [INFO] [stdout] 13 | struct Team { [INFO] [stdout] | ^^^^ [INFO] [stdout] | [INFO] [stdout] = note: `Team` has a derived impl for the trait `Default`, 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: function `build_scores_table` is never used [INFO] [stdout] --> exercises/11_hashmaps/hashmaps3.rs:18:4 [INFO] [stdout] | [INFO] [stdout] 18 | fn build_scores_table(results: &str) -> HashMap<&str, Team> { [INFO] [stdout] | ^^^^^^^^^^^^^^^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: struct `Order` is never constructed [INFO] [stdout] --> exercises/07_structs/structs2.rs:2:8 [INFO] [stdout] | [INFO] [stdout] 2 | struct Order { [INFO] [stdout] | ^^^^^ [INFO] [stdout] | [INFO] [stdout] = note: `#[warn(dead_code)]` on by default [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: function `create_order_template` is never used [INFO] [stdout] --> exercises/07_structs/structs2.rs:12:4 [INFO] [stdout] | [INFO] [stdout] 12 | fn create_order_template() -> Order { [INFO] [stdout] | ^^^^^^^^^^^^^^^^^^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: function `power_of_2` is never used [INFO] [stdout] --> solutions/17_tests/tests2.rs:3:4 [INFO] [stdout] | [INFO] [stdout] 3 | fn power_of_2(n: u8) -> u64 { [INFO] [stdout] | ^^^^^^^^^^ [INFO] [stdout] | [INFO] [stdout] = note: `#[warn(dead_code)]` on by default [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: enum `DivisionError` is never used [INFO] [stdout] --> solutions/18_iterators/iterators3.rs:2:6 [INFO] [stdout] | [INFO] [stdout] 2 | enum DivisionError { [INFO] [stdout] | ^^^^^^^^^^^^^ [INFO] [stdout] | [INFO] [stdout] = note: `#[warn(dead_code)]` on by default [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: function `vec_loop` is never used [INFO] [stdout] --> exercises/05_vecs/vecs2.rs:1:4 [INFO] [stdout] | [INFO] [stdout] 1 | fn vec_loop(input: &[i32]) -> Vec { [INFO] [stdout] | ^^^^^^^^ [INFO] [stdout] | [INFO] [stdout] = note: `#[warn(dead_code)]` on by default [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: function `divide` is never used [INFO] [stdout] --> solutions/18_iterators/iterators3.rs:11:4 [INFO] [stdout] | [INFO] [stdout] 11 | fn divide(a: i64, b: i64) -> Result { [INFO] [stdout] | ^^^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: function `result_with_list` is never used [INFO] [stdout] --> solutions/18_iterators/iterators3.rs:27:4 [INFO] [stdout] | [INFO] [stdout] 27 | fn result_with_list() -> Result, DivisionError> { [INFO] [stdout] | ^^^^^^^^^^^^^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: function `list_of_results` is never used [INFO] [stdout] --> solutions/18_iterators/iterators3.rs:36:4 [INFO] [stdout] | [INFO] [stdout] 36 | fn list_of_results() -> Vec> { [INFO] [stdout] | ^^^^^^^^^^^^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: function `vec_map_example` is never used [INFO] [stdout] --> exercises/05_vecs/vecs2.rs:14:4 [INFO] [stdout] | [INFO] [stdout] 14 | fn vec_map_example(input: &[i32]) -> Vec { [INFO] [stdout] | ^^^^^^^^^^^^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: function `vec_map` is never used [INFO] [stdout] --> exercises/05_vecs/vecs2.rs:21:4 [INFO] [stdout] | [INFO] [stdout] 21 | fn vec_map(input: &[i32]) -> Vec { [INFO] [stdout] | ^^^^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: struct `Wrapper` is never constructed [INFO] [stdout] --> solutions/14_generics/generics2.rs:1:8 [INFO] [stdout] | [INFO] [stdout] 1 | struct Wrapper { [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] --> solutions/14_generics/generics2.rs:6:8 [INFO] [stdout] | [INFO] [stdout] 5 | impl Wrapper { [INFO] [stdout] | ------------------ associated function in this implementation [INFO] [stdout] 6 | fn new(value: T) -> Self { [INFO] [stdout] | ^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: function `calculate_price_of_apples` is never used [INFO] [stdout] --> solutions/quizzes/quiz1.rs:6:4 [INFO] [stdout] | [INFO] [stdout] 6 | fn calculate_price_of_apples(n_apples: u64) -> u64 { [INFO] [stdout] | ^^^^^^^^^^^^^^^^^^^^^^^^^ [INFO] [stdout] | [INFO] [stdout] = note: `#[warn(dead_code)]` on by default [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: trait `AppendBar` is never used [INFO] [stdout] --> exercises/15_traits/traits2.rs:1:7 [INFO] [stdout] | [INFO] [stdout] 1 | trait AppendBar { [INFO] [stdout] | ^^^^^^^^^ [INFO] [stdout] | [INFO] [stdout] = note: `#[warn(dead_code)]` on by default [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: function `foo_if_fizz` is never used [INFO] [stdout] --> solutions/03_if/if2.rs:1:4 [INFO] [stdout] | [INFO] [stdout] 1 | fn foo_if_fizz(fizzish: &str) -> &str { [INFO] [stdout] | ^^^^^^^^^^^ [INFO] [stdout] | [INFO] [stdout] = note: `#[warn(dead_code)]` on by default [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: struct `Rectangle` is never constructed [INFO] [stdout] --> exercises/17_tests/tests3.rs:1:8 [INFO] [stdout] | [INFO] [stdout] 1 | struct Rectangle { [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/17_tests/tests3.rs:8:8 [INFO] [stdout] | [INFO] [stdout] 6 | impl Rectangle { [INFO] [stdout] | -------------- associated function in this implementation [INFO] [stdout] 7 | // Don't change this function. [INFO] [stdout] 8 | fn new(width: i32, height: i32) -> Self { [INFO] [stdout] | ^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: struct `ReportCard` is never constructed [INFO] [stdout] --> solutions/quizzes/quiz3.rs:13:8 [INFO] [stdout] | [INFO] [stdout] 13 | struct ReportCard { [INFO] [stdout] | ^^^^^^^^^^ [INFO] [stdout] | [INFO] [stdout] = note: `#[warn(dead_code)]` on by default [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: method `print` is never used [INFO] [stdout] --> solutions/quizzes/quiz3.rs:24:8 [INFO] [stdout] | [INFO] [stdout] 22 | impl ReportCard { [INFO] [stdout] | ------------------------------ method in this implementation [INFO] [stdout] 23 | // ^^^^^^^ require that `T` implements `Display`. [INFO] [stdout] 24 | fn print(&self) -> String { [INFO] [stdout] | ^^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: function `fill_vec` is never used [INFO] [stdout] --> solutions/06_move_semantics/move_semantics2.rs:1:4 [INFO] [stdout] | [INFO] [stdout] 1 | fn fill_vec(vec: Vec) -> Vec { [INFO] [stdout] | ^^^^^^^^ [INFO] [stdout] | [INFO] [stdout] = note: `#[warn(dead_code)]` on by default [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: struct `Queue` is never constructed [INFO] [stdout] --> solutions/20_threads/threads3.rs:3:8 [INFO] [stdout] | [INFO] [stdout] 3 | struct Queue { [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] --> solutions/20_threads/threads3.rs:10:8 [INFO] [stdout] | [INFO] [stdout] 9 | impl Queue { [INFO] [stdout] | ---------- associated function in this implementation [INFO] [stdout] 10 | fn new() -> Self { [INFO] [stdout] | ^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: function `send_tx` is never used [INFO] [stdout] --> solutions/20_threads/threads3.rs:19:4 [INFO] [stdout] | [INFO] [stdout] 19 | fn send_tx(q: Queue, tx: mpsc::Sender) { [INFO] [stdout] | ^^^^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: function `total_cost` is never used [INFO] [stdout] --> solutions/13_error_handling/errors2.rs:20:4 [INFO] [stdout] | [INFO] [stdout] 20 | fn total_cost(item_quantity: &str) -> Result { [INFO] [stdout] | ^^^^^^^^^^ [INFO] [stdout] | [INFO] [stdout] = note: `#[warn(dead_code)]` on by default [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: struct `Team` is never constructed [INFO] [stdout] --> solutions/11_hashmaps/hashmaps3.rs:13:8 [INFO] [stdout] | [INFO] [stdout] 13 | struct Team { [INFO] [stdout] | ^^^^ [INFO] [stdout] | [INFO] [stdout] = note: `Team` has a derived impl for the trait `Default`, 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: function `build_scores_table` is never used [INFO] [stdout] --> solutions/11_hashmaps/hashmaps3.rs:18:4 [INFO] [stdout] | [INFO] [stdout] 18 | fn build_scores_table(results: &str) -> HashMap<&str, Team> { [INFO] [stdout] | ^^^^^^^^^^^^^^^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: enum `Fruit` is never used [INFO] [stdout] --> solutions/11_hashmaps/hashmaps2.rs:13:6 [INFO] [stdout] | [INFO] [stdout] 13 | enum Fruit { [INFO] [stdout] | ^^^^^ [INFO] [stdout] | [INFO] [stdout] = note: `#[warn(dead_code)]` on by default [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: function `fruit_basket` is never used [INFO] [stdout] --> solutions/11_hashmaps/hashmaps2.rs:21:4 [INFO] [stdout] | [INFO] [stdout] 21 | fn fruit_basket(basket: &mut HashMap) { [INFO] [stdout] | ^^^^^^^^^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: function `fill_vec` is never used [INFO] [stdout] --> exercises/06_move_semantics/move_semantics2.rs:1:4 [INFO] [stdout] | [INFO] [stdout] 1 | fn fill_vec(vec: &Vec) -> Vec { [INFO] [stdout] | ^^^^^^^^ [INFO] [stdout] | [INFO] [stdout] = note: `#[warn(dead_code)]` on by default [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: enum `Fruit` is never used [INFO] [stdout] --> exercises/11_hashmaps/hashmaps2.rs:14:6 [INFO] [stdout] | [INFO] [stdout] 14 | enum Fruit { [INFO] [stdout] | ^^^^^ [INFO] [stdout] | [INFO] [stdout] = note: `#[warn(dead_code)]` on by default [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: function `fruit_basket` is never used [INFO] [stdout] --> exercises/11_hashmaps/hashmaps2.rs:22:4 [INFO] [stdout] | [INFO] [stdout] 22 | fn fruit_basket(basket: &mut HashMap) { [INFO] [stdout] | ^^^^^^^^^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: function `maybe_icecream` is never used [INFO] [stdout] --> solutions/12_options/options1.rs:5:4 [INFO] [stdout] | [INFO] [stdout] 5 | fn maybe_icecream(hour_of_day: u16) -> Option { [INFO] [stdout] | ^^^^^^^^^^^^^^ [INFO] [stdout] | [INFO] [stdout] = note: `#[warn(dead_code)]` on by default [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: function `bigger` is never used [INFO] [stdout] --> exercises/03_if/if1.rs:1:4 [INFO] [stdout] | [INFO] [stdout] 1 | fn bigger(a: i32, b: i32) -> i32 { [INFO] [stdout] | ^^^^^^ [INFO] [stdout] | [INFO] [stdout] = note: `#[warn(dead_code)]` on by default [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: enum `Command` is never used [INFO] [stdout] --> exercises/quizzes/quiz2.rs:20:6 [INFO] [stdout] | [INFO] [stdout] 20 | enum Command { [INFO] [stdout] | ^^^^^^^ [INFO] [stdout] | [INFO] [stdout] = note: `#[warn(dead_code)]` on by default [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: function `transformer` is never used [INFO] [stdout] --> exercises/quizzes/quiz2.rs:31:12 [INFO] [stdout] | [INFO] [stdout] 31 | pub fn transformer(input: Vec<(String, Command)>) -> Vec { [INFO] [stdout] | ^^^^^^^^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: enum `CreationError` is never used [INFO] [stdout] --> exercises/13_error_handling/errors4.rs:4:6 [INFO] [stdout] | [INFO] [stdout] 4 | enum CreationError { [INFO] [stdout] | ^^^^^^^^^^^^^ [INFO] [stdout] | [INFO] [stdout] = note: `#[warn(dead_code)]` on by default [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: struct `PositiveNonzeroInteger` is never constructed [INFO] [stdout] --> exercises/13_error_handling/errors4.rs:10:8 [INFO] [stdout] | [INFO] [stdout] 10 | struct PositiveNonzeroInteger(u64); [INFO] [stdout] | ^^^^^^^^^^^^^^^^^^^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: associated function `new` is never used [INFO] [stdout] --> exercises/13_error_handling/errors4.rs:13:8 [INFO] [stdout] | [INFO] [stdout] 12 | impl PositiveNonzeroInteger { [INFO] [stdout] | --------------------------- associated function in this implementation [INFO] [stdout] 13 | fn new(value: i64) -> Result { [INFO] [stdout] | ^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: struct `Package` is never constructed [INFO] [stdout] --> exercises/07_structs/structs3.rs:5:8 [INFO] [stdout] | [INFO] [stdout] 5 | struct Package { [INFO] [stdout] | ^^^^^^^ [INFO] [stdout] | [INFO] [stdout] = note: `#[warn(dead_code)]` on by default [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: associated items `new`, `is_international`, and `get_fees` are never used [INFO] [stdout] --> exercises/07_structs/structs3.rs:12:8 [INFO] [stdout] | [INFO] [stdout] 11 | impl Package { [INFO] [stdout] | ------------ associated items in this implementation [INFO] [stdout] 12 | fn new(sender_country: String, recipient_country: String, weight_in_grams: u32) -> Self { [INFO] [stdout] | ^^^ [INFO] [stdout] ... [INFO] [stdout] 27 | fn is_international(&self) -> bool { [INFO] [stdout] | ^^^^^^^^^^^^^^^^ [INFO] [stdout] ... [INFO] [stdout] 34 | fn get_fees(&self, cents_per_gram: u32) -> u32 { [INFO] [stdout] | ^^^^^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: enum `Command` is never used [INFO] [stdout] --> solutions/quizzes/quiz2.rs:13:6 [INFO] [stdout] | [INFO] [stdout] 13 | enum Command { [INFO] [stdout] | ^^^^^^^ [INFO] [stdout] | [INFO] [stdout] = note: `#[warn(dead_code)]` on by default [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: function `transformer` is never used [INFO] [stdout] --> solutions/quizzes/quiz2.rs:24:12 [INFO] [stdout] | [INFO] [stdout] 24 | pub fn transformer(input: Vec<(String, Command)>) -> Vec { [INFO] [stdout] | ^^^^^^^^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: function `transformer_iter` is never used [INFO] [stdout] --> solutions/quizzes/quiz2.rs:44:12 [INFO] [stdout] | [INFO] [stdout] 44 | pub fn transformer_iter(input: Vec<(String, Command)>) -> Vec { [INFO] [stdout] | ^^^^^^^^^^^^^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: function `total_cost` is never used [INFO] [stdout] --> exercises/13_error_handling/errors2.rs:19:4 [INFO] [stdout] | [INFO] [stdout] 19 | fn total_cost(item_quantity: &str) -> Result { [INFO] [stdout] | ^^^^^^^^^^ [INFO] [stdout] | [INFO] [stdout] = note: `#[warn(dead_code)]` on by default [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused import: `os::linux::raw::stat` [INFO] [stdout] --> exercises/20_threads/threads2.rs:5:11 [INFO] [stdout] | [INFO] [stdout] 5 | use std::{os::linux::raw::stat, sync::Arc, thread, time::Duration}; [INFO] [stdout] | ^^^^^^^^^^^^^^^^^^^^ [INFO] [stdout] | [INFO] [stdout] = note: `#[warn(unused_imports)]` on by default [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: function `maybe_icecream` is never used [INFO] [stdout] --> exercises/12_options/options1.rs:5:4 [INFO] [stdout] | [INFO] [stdout] 5 | fn maybe_icecream(hour_of_day: u16) -> Option { [INFO] [stdout] | ^^^^^^^^^^^^^^ [INFO] [stdout] | [INFO] [stdout] = note: `#[warn(dead_code)]` on by default [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: use of deprecated struct `std::os::linux::raw::stat`: these type aliases are no longer supported by the standard library, the `libc` crate on crates.io should be used instead for the correct definitions [INFO] [stdout] --> exercises/20_threads/threads2.rs:5:27 [INFO] [stdout] | [INFO] [stdout] 5 | use std::{os::linux::raw::stat, sync::Arc, thread, time::Duration}; [INFO] [stdout] | ^^^^ [INFO] [stdout] | [INFO] [stdout] = note: `#[warn(deprecated)]` on by default [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: enum `Progress` is never used [INFO] [stdout] --> exercises/18_iterators/iterators5.rs:10:6 [INFO] [stdout] | [INFO] [stdout] 10 | enum Progress { [INFO] [stdout] | ^^^^^^^^ [INFO] [stdout] | [INFO] [stdout] = note: `#[warn(dead_code)]` on by default [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: function `count_for` is never used [INFO] [stdout] --> exercises/18_iterators/iterators5.rs:16:4 [INFO] [stdout] | [INFO] [stdout] 16 | fn count_for(map: &HashMap, value: Progress) -> usize { [INFO] [stdout] | ^^^^^^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: function `count_iterator` is never used [INFO] [stdout] --> exercises/18_iterators/iterators5.rs:28:4 [INFO] [stdout] | [INFO] [stdout] 28 | fn count_iterator(map: &HashMap, value: Progress) -> usize { [INFO] [stdout] | ^^^^^^^^^^^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: function `count_collection_for` is never used [INFO] [stdout] --> exercises/18_iterators/iterators5.rs:35:4 [INFO] [stdout] | [INFO] [stdout] 35 | fn count_collection_for(collection: &[HashMap], value: Progress) -> usize { [INFO] [stdout] | ^^^^^^^^^^^^^^^^^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: function `count_collection_iterator` is never used [INFO] [stdout] --> exercises/18_iterators/iterators5.rs:49:4 [INFO] [stdout] | [INFO] [stdout] 49 | fn count_collection_iterator(collection: &[HashMap], value: Progress) -> usize { [INFO] [stdout] | ^^^^^^^^^^^^^^^^^^^^^^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: method `details` is never used [INFO] [stdout] --> solutions/19_smart_pointers/rc1.rs:25:8 [INFO] [stdout] | [INFO] [stdout] 24 | impl Planet { [INFO] [stdout] | ----------- method in this implementation [INFO] [stdout] 25 | fn details(&self) { [INFO] [stdout] | ^^^^^^^ [INFO] [stdout] | [INFO] [stdout] = note: `#[warn(dead_code)]` on by default [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: function `longest` is never used [INFO] [stdout] --> exercises/16_lifetimes/lifetimes1.rs:7:4 [INFO] [stdout] | [INFO] [stdout] 7 | fn longest<'a>(x: &'a str, y: &'a str) -> &'a str { [INFO] [stdout] | ^^^^^^^ [INFO] [stdout] | [INFO] [stdout] = note: `#[warn(dead_code)]` on by default [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: function `animal_habitat` is never used [INFO] [stdout] --> solutions/03_if/if3.rs:1:4 [INFO] [stdout] | [INFO] [stdout] 1 | fn animal_habitat(animal: &str) -> &str { [INFO] [stdout] | ^^^^^^^^^^^^^^ [INFO] [stdout] | [INFO] [stdout] = note: `#[warn(dead_code)]` on by default [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused import: `std::ops::Div` [INFO] [stdout] --> exercises/18_iterators/iterators3.rs:1:5 [INFO] [stdout] | [INFO] [stdout] 1 | use std::ops::Div; [INFO] [stdout] | ^^^^^^^^^^^^^ [INFO] [stdout] | [INFO] [stdout] = note: `#[warn(unused_imports)]` on by default [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: enum `DivisionError` is never used [INFO] [stdout] --> exercises/18_iterators/iterators3.rs:4:6 [INFO] [stdout] | [INFO] [stdout] 4 | enum DivisionError { [INFO] [stdout] | ^^^^^^^^^^^^^ [INFO] [stdout] | [INFO] [stdout] = note: `#[warn(dead_code)]` on by default [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: function `divide` is never used [INFO] [stdout] --> exercises/18_iterators/iterators3.rs:15:4 [INFO] [stdout] | [INFO] [stdout] 15 | fn divide(a: i64, b: i64) -> Result { [INFO] [stdout] | ^^^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: function `result_with_list` is never used [INFO] [stdout] --> exercises/18_iterators/iterators3.rs:31:4 [INFO] [stdout] | [INFO] [stdout] 31 | fn result_with_list() -> Result, DivisionError> { [INFO] [stdout] | ^^^^^^^^^^^^^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: function `list_of_results` is never used [INFO] [stdout] --> exercises/18_iterators/iterators3.rs:45:4 [INFO] [stdout] | [INFO] [stdout] 45 | fn list_of_results() -> Vec> { [INFO] [stdout] | ^^^^^^^^^^^^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: function `abs_all` is never used [INFO] [stdout] --> solutions/19_smart_pointers/cow1.rs:8:4 [INFO] [stdout] | [INFO] [stdout] 8 | fn abs_all(input: &mut Cow<[i32]>) { [INFO] [stdout] | ^^^^^^^ [INFO] [stdout] | [INFO] [stdout] = note: `#[warn(dead_code)]` on by default [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: function `generate_nametag_text` is never used [INFO] [stdout] --> solutions/13_error_handling/errors1.rs:1:4 [INFO] [stdout] | [INFO] [stdout] 1 | fn generate_nametag_text(name: String) -> Result { [INFO] [stdout] | ^^^^^^^^^^^^^^^^^^^^^ [INFO] [stdout] | [INFO] [stdout] = note: `#[warn(dead_code)]` on by default [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: function `calculate_price_of_apples` is never used [INFO] [stdout] --> exercises/quizzes/quiz1.rs:33:4 [INFO] [stdout] | [INFO] [stdout] 33 | fn calculate_price_of_apples(num: u32) -> u32{ [INFO] [stdout] | ^^^^^^^^^^^^^^^^^^^^^^^^^ [INFO] [stdout] | [INFO] [stdout] = note: `#[warn(dead_code)]` on by default [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: function `byte_counter` is never used [INFO] [stdout] --> exercises/23_conversions/as_ref_mut.rs:7:4 [INFO] [stdout] | [INFO] [stdout] 7 | fn byte_counter>(arg: T) -> usize { [INFO] [stdout] | ^^^^^^^^^^^^ [INFO] [stdout] | [INFO] [stdout] = note: `#[warn(dead_code)]` on by default [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: function `char_counter` is never used [INFO] [stdout] --> exercises/23_conversions/as_ref_mut.rs:13:4 [INFO] [stdout] | [INFO] [stdout] 13 | fn char_counter>(arg: T) -> usize { [INFO] [stdout] | ^^^^^^^^^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: function `num_sq` is never used [INFO] [stdout] --> exercises/23_conversions/as_ref_mut.rs:19:4 [INFO] [stdout] | [INFO] [stdout] 19 | fn num_sq>(arg: &mut T) { [INFO] [stdout] | ^^^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: struct `Package` is never constructed [INFO] [stdout] --> solutions/07_structs/structs3.rs:2:8 [INFO] [stdout] | [INFO] [stdout] 2 | struct Package { [INFO] [stdout] | ^^^^^^^ [INFO] [stdout] | [INFO] [stdout] = note: `#[warn(dead_code)]` on by default [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: associated items `new`, `is_international`, and `get_fees` are never used [INFO] [stdout] --> solutions/07_structs/structs3.rs:9:8 [INFO] [stdout] | [INFO] [stdout] 8 | impl Package { [INFO] [stdout] | ------------ associated items in this implementation [INFO] [stdout] 9 | fn new(sender_country: String, recipient_country: String, weight_in_grams: u32) -> Self { [INFO] [stdout] | ^^^ [INFO] [stdout] ... [INFO] [stdout] 23 | fn is_international(&self) -> bool { [INFO] [stdout] | ^^^^^^^^^^^^^^^^ [INFO] [stdout] ... [INFO] [stdout] 28 | fn get_fees(&self, cents_per_gram: u32) -> u32 { [INFO] [stdout] | ^^^^^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: struct `Order` is never constructed [INFO] [stdout] --> solutions/07_structs/structs2.rs:2:8 [INFO] [stdout] | [INFO] [stdout] 2 | struct Order { [INFO] [stdout] | ^^^^^ [INFO] [stdout] | [INFO] [stdout] = note: `#[warn(dead_code)]` on by default [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: function `create_order_template` is never used [INFO] [stdout] --> solutions/07_structs/structs2.rs:12:4 [INFO] [stdout] | [INFO] [stdout] 12 | fn create_order_template() -> Order { [INFO] [stdout] | ^^^^^^^^^^^^^^^^^^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: function `generate_nametag_text` is never used [INFO] [stdout] --> exercises/13_error_handling/errors1.rs:7:4 [INFO] [stdout] | [INFO] [stdout] 7 | fn generate_nametag_text(name: String) -> Result { [INFO] [stdout] | ^^^^^^^^^^^^^^^^^^^^^ [INFO] [stdout] | [INFO] [stdout] = note: `#[warn(dead_code)]` on by default [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: function `abs_all` is never used [INFO] [stdout] --> exercises/19_smart_pointers/cow1.rs:8:4 [INFO] [stdout] | [INFO] [stdout] 8 | fn abs_all(input: &mut Cow<[i32]>) { [INFO] [stdout] | ^^^^^^^ [INFO] [stdout] | [INFO] [stdout] = note: `#[warn(dead_code)]` on by default [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] error: internal compiler error: compiler/rustc_mir_build/src/builder/scope.rs:1724:17: cannot unwind from goto -> bb50 [INFO] [stdout] --> exercises/23_conversions/from_str.rs:65:6 [INFO] [stdout] | [INFO] [stdout] 65 | } [INFO] [stdout] | ^ [INFO] [stdout] [INFO] [stdout] [INFO] [stderr] thread 'rustc' panicked at compiler/rustc_mir_build/src/builder/scope.rs:1724:17: [INFO] [stderr] Box [INFO] [stderr] stack backtrace: [INFO] [stderr] 0: 0x74aae8f81caa - ::fmt::h636462e57d5ef1e1 [INFO] [stderr] 1: 0x74aae9613cbc - core::fmt::write::h067060808ac50eb9 [INFO] [stderr] 2: 0x74aaea528e11 - std::io::Write::write_fmt::h4674fa2ed7c0dfdd [INFO] [stderr] 3: 0x74aae8f81b02 - std::sys::backtrace::BacktraceLock::print::h0c77148acfb0b5e9 [INFO] [stderr] 4: 0x74aae8f83ffa - std::panicking::default_hook::{{closure}}::h30daa8e7c6ccb09d [INFO] [stderr] 5: 0x74aae8f83e43 - std::panicking::default_hook::h25f21dc0f2064615 [INFO] [stderr] 6: 0x74aae80eff28 - std[b36e883d67eb0403]::panicking::update_hook::>::{closure#0} [INFO] [stderr] 7: 0x74aae8f847b8 - std::panicking::rust_panic_with_hook::hc98438687e833605 [INFO] [stderr] 8: 0x74aae812a341 - std[b36e883d67eb0403]::panicking::begin_panic::::{closure#0} [INFO] [stderr] 9: 0x74aae811f526 - std[b36e883d67eb0403]::sys::backtrace::__rust_end_short_backtrace::::{closure#0}, !> [INFO] [stderr] 10: 0x74aae811f50d - std[b36e883d67eb0403]::panicking::begin_panic:: [INFO] [stderr] 11: 0x74aae81342a1 - ::emit_producing_guarantee [INFO] [stderr] 12: 0x74aae8684fdc - ::span_bug:: [INFO] [stderr] 13: 0x74aae870a897 - rustc_middle[8ad6e8ce52578819]::util::bug::opt_span_bug_fmt::::{closure#0} [INFO] [stderr] 14: 0x74aae86f006a - rustc_middle[8ad6e8ce52578819]::ty::context::tls::with_opt::::{closure#0}, !>::{closure#0} [INFO] [stderr] 15: 0x74aae86efefb - rustc_middle[8ad6e8ce52578819]::ty::context::tls::with_context_opt::::{closure#0}, !>::{closure#0}, !> [INFO] [stderr] 16: 0x74aae6b34437 - rustc_middle[8ad6e8ce52578819]::util::bug::span_bug_fmt:: [INFO] [stderr] 17: 0x74aae9fd541b - ::build_unwind_tree [INFO] [stderr] 18: 0x74aae9fcd7cd - rustc_mir_build[73684a27b88b946a]::builder::mir_build [INFO] [stderr] 19: 0x74aae9607714 - rustc_mir_transform[857cd804783fef4d]::mir_built [INFO] [stderr] 20: 0x74aae96076d7 - rustc_query_impl[1e55094a59e290f4]::plumbing::__rust_begin_short_backtrace::> [INFO] [stderr] 21: 0x74aae98953d1 - rustc_query_system[67781f9dc633c543]::query::plumbing::try_execute_query::, rustc_query_system[67781f9dc633c543]::dep_graph::graph::DepNodeIndex>, false, false, false>, rustc_query_impl[1e55094a59e290f4]::plumbing::QueryCtxt, false> [INFO] [stderr] 22: 0x74aae9894f8d - rustc_query_impl[1e55094a59e290f4]::query_impl::mir_built::get_query_non_incr::__rust_end_short_backtrace [INFO] [stderr] 23: 0x74aae6667185 - rustc_mir_build[73684a27b88b946a]::check_unsafety::check_unsafety [INFO] [stderr] 24: 0x74aae9ee98a7 - rustc_query_impl[1e55094a59e290f4]::plumbing::__rust_begin_short_backtrace::> [INFO] [stderr] 25: 0x74aae9ee9b69 - rustc_query_system[67781f9dc633c543]::query::plumbing::try_execute_query::, rustc_query_system[67781f9dc633c543]::dep_graph::graph::DepNodeIndex>, false, false, false>, rustc_query_impl[1e55094a59e290f4]::plumbing::QueryCtxt, false> [INFO] [stderr] 26: 0x74aae9ee97d1 - rustc_query_impl[1e55094a59e290f4]::query_impl::check_unsafety::get_query_non_incr::__rust_end_short_backtrace [INFO] [stderr] 27: 0x74aae9a9bd32 - rustc_interface[b59e7ee7606ca029]::passes::run_required_analyses [INFO] [stderr] 28: 0x74aaea52cc9e - rustc_interface[b59e7ee7606ca029]::passes::analysis [INFO] [stderr] 29: 0x74aaea52cc6f - rustc_query_impl[1e55094a59e290f4]::plumbing::__rust_begin_short_backtrace::> [INFO] [stderr] 30: 0x74aaea57b355 - rustc_query_system[67781f9dc633c543]::query::plumbing::try_execute_query::>, false, false, false>, rustc_query_impl[1e55094a59e290f4]::plumbing::QueryCtxt, false> [INFO] [stderr] 31: 0x74aaea57b08e - rustc_query_impl[1e55094a59e290f4]::query_impl::analysis::get_query_non_incr::__rust_end_short_backtrace [INFO] [stderr] 32: 0x74aaea5701de - rustc_interface[b59e7ee7606ca029]::passes::create_and_enter_global_ctxt::, rustc_driver_impl[be5855d19ccc8b6c]::run_compiler::{closure#0}::{closure#2}>::{closure#2}::{closure#0} [INFO] [stderr] 33: 0x74aaea5dff51 - rustc_interface[b59e7ee7606ca029]::interface::run_compiler::<(), rustc_driver_impl[be5855d19ccc8b6c]::run_compiler::{closure#0}>::{closure#1} [INFO] [stderr] 34: 0x74aaea4f5087 - std[b36e883d67eb0403]::sys::backtrace::__rust_begin_short_backtrace::::{closure#1}, ()>::{closure#0}, ()>::{closure#0}::{closure#0}, ()> [INFO] [stderr] 35: 0x74aaea4f551c - <::spawn_unchecked_::{closure#1}, ()>::{closure#0}, ()>::{closure#0}::{closure#0}, ()>::{closure#1} as core[303105738bd0c2ae]::ops::function::FnOnce<()>>::call_once::{shim:vtable#0} [INFO] [stderr] 36: 0x74aaea4f6aef - std::sys::pal::unix::thread::Thread::new::thread_start::ha554cc4ba6335b05 [INFO] [stderr] 37: 0x74aae486bac3 - [INFO] [stderr] 38: 0x74aae48fca04 - clone [INFO] [stderr] 39: 0x0 - [INFO] [stderr] [INFO] [stderr] note: we would appreciate a bug report: https://github.com/rust-lang/rust/issues/new?labels=C-bug%2C+I-ICE%2C+T-compiler&template=ice.md [INFO] [stderr] [INFO] [stderr] note: please make sure that you have updated to the latest nightly [INFO] [stderr] [INFO] [stderr] warning: the ICE couldn't be written to `/opt/rustwide/workdir/rustc-ice-2025-01-01T03_32_18-2366.txt`: Read-only file system (os error 30) [INFO] [stderr] [INFO] [stderr] note: rustc 1.85.0-nightly (9b5e8b16b 2024-12-19) running on x86_64-unknown-linux-gnu [INFO] [stderr] [INFO] [stderr] note: compiler flags: --crate-type bin -C embed-bitcode=no -C debuginfo=2 [INFO] [stderr] [INFO] [stderr] note: some of the compiler flags provided by cargo are hidden [INFO] [stderr] [INFO] [stderr] query stack during panic: [INFO] [stderr] #0 [mir_built] building MIR for `::from_str` [INFO] [stderr] #1 [check_unsafety] unsafety-checking `::from_str` [INFO] [stderr] #2 [analysis] running analysis passes on this crate [INFO] [stderr] end of query stack [INFO] [stderr] error: could not compile `exercises` (bin "from_str") [INFO] [stderr] [INFO] [stderr] Caused by: [INFO] [stderr] process didn't exit successfully: `/opt/rustwide/rustup-home/toolchains/9b5e8b16bd1c4acf4cf8e6880368314cf021a987/bin/rustc --crate-name from_str --edition=2021 exercises/23_conversions/from_str.rs --error-format=json --json=diagnostic-rendered-ansi,artifacts,future-incompat --crate-type bin --emit=dep-info,link -C embed-bitcode=no -C debuginfo=2 --check-cfg 'cfg(docsrs)' --check-cfg 'cfg(feature, values())' -C metadata=5a46d95a47c5e1c7 -C extra-filename=-8609a787f8991696 --out-dir /opt/rustwide/target/debug/deps -L dependency=/opt/rustwide/target/debug/deps --cap-lints=forbid -Dtail-expr-drop-order` (exit status: 101) [INFO] [stderr] warning: build failed, waiting for other jobs to finish... [INFO] [stdout] warning: function `bigger` is never used [INFO] [stdout] --> solutions/03_if/if1.rs:1:4 [INFO] [stdout] | [INFO] [stdout] 1 | fn bigger(a: i32, b: i32) -> i32 { [INFO] [stdout] | ^^^^^^ [INFO] [stdout] | [INFO] [stdout] = note: `#[warn(dead_code)]` on by default [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: function `trim_me` is never used [INFO] [stdout] --> exercises/09_strings/strings3.rs:1:4 [INFO] [stdout] | [INFO] [stdout] 1 | fn trim_me(input: &str) -> &str { [INFO] [stdout] | ^^^^^^^ [INFO] [stdout] | [INFO] [stdout] = note: `#[warn(dead_code)]` on by default [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: function `compose_me` is never used [INFO] [stdout] --> exercises/09_strings/strings3.rs:6:4 [INFO] [stdout] | [INFO] [stdout] 6 | fn compose_me(input: &str) -> String { [INFO] [stdout] | ^^^^^^^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: function `replace_me` is never used [INFO] [stdout] --> exercises/09_strings/strings3.rs:11:4 [INFO] [stdout] | [INFO] [stdout] 11 | fn replace_me(input: &str) -> String { [INFO] [stdout] | ^^^^^^^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] running `Command { std: "docker" "inspect" "7560d5634326e1e0bf8d9533697442b0aa125c3a4aae7a7d22cd21ba4f12a0fd", kill_on_drop: false }` [INFO] running `Command { std: "docker" "rm" "-f" "7560d5634326e1e0bf8d9533697442b0aa125c3a4aae7a7d22cd21ba4f12a0fd", kill_on_drop: false }` [INFO] [stdout] 7560d5634326e1e0bf8d9533697442b0aa125c3a4aae7a7d22cd21ba4f12a0fd