[INFO] cloning repository https://github.com/datager/rustlings [INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/datager/rustlings" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fdatager%2Frustlings", kill_on_drop: false }` [INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fdatager%2Frustlings'... [INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }` [INFO] [stdout] 0abf684aca5af13715de9c947c5442ab9a42519a [INFO] checking datager/rustlings against try#9543f8ea2aae74b8f13ac2a6e6c0ecdca9810869 for pr-129249 [INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fdatager%2Frustlings" "/workspace/builds/worker-5-tc2/source", kill_on_drop: false }` [INFO] [stderr] Cloning into '/workspace/builds/worker-5-tc2/source'... [INFO] [stderr] done. 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[INFO] validating manifest of git repo https://github.com/datager/rustlings on toolchain 9543f8ea2aae74b8f13ac2a6e6c0ecdca9810869 [INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+9543f8ea2aae74b8f13ac2a6e6c0ecdca9810869" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }` [INFO] started tweaking git repo https://github.com/datager/rustlings [INFO] finished tweaking git repo https://github.com/datager/rustlings [INFO] tweaked toml for git repo https://github.com/datager/rustlings written to /workspace/builds/worker-5-tc2/source/Cargo.toml [INFO] crate git repo https://github.com/datager/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" "+9543f8ea2aae74b8f13ac2a6e6c0ecdca9810869" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }` [INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-5-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-5-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" "+9543f8ea2aae74b8f13ac2a6e6c0ecdca9810869" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }` [INFO] [stdout] 7bbdcd169e7b2d34af4a96b4536e22f61dfe93a1fb5fb5d66768929bcaeb307a [INFO] running `Command { std: "docker" "start" "-a" "7bbdcd169e7b2d34af4a96b4536e22f61dfe93a1fb5fb5d66768929bcaeb307a", kill_on_drop: false }` [INFO] running `Command { std: "docker" "inspect" "7bbdcd169e7b2d34af4a96b4536e22f61dfe93a1fb5fb5d66768929bcaeb307a", kill_on_drop: false }` [INFO] running `Command { std: "docker" "rm" "-f" "7bbdcd169e7b2d34af4a96b4536e22f61dfe93a1fb5fb5d66768929bcaeb307a", kill_on_drop: false }` [INFO] [stdout] 7bbdcd169e7b2d34af4a96b4536e22f61dfe93a1fb5fb5d66768929bcaeb307a [INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-5-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-5-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" "-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" "+9543f8ea2aae74b8f13ac2a6e6c0ecdca9810869" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }` [INFO] [stdout] 2b497d0dc891844bf68aefa5784af89000e5be69066bacc025b63460e97c9bfe [INFO] running `Command { std: "docker" "start" "-a" "2b497d0dc891844bf68aefa5784af89000e5be69066bacc025b63460e97c9bfe", kill_on_drop: false }` [INFO] [stderr] Checking exercises v0.0.0 (/opt/rustwide/workdir) [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: 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: function `capitalize_first` is never used [INFO] [stdout] --> exercises/18_iterators/iterators2.rs:6:4 [INFO] [stdout] | [INFO] [stdout] 6 | fn capitalize_first(input: &str) -> String { [INFO] [stdout] | ^^^^^^^^^^^^^^^^ [INFO] [stdout] | [INFO] [stdout] = note: `#[warn(dead_code)]` on by default [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: function `capitalize_words_vector` is never used [INFO] [stdout] --> exercises/18_iterators/iterators2.rs:17:4 [INFO] [stdout] | [INFO] [stdout] 17 | fn capitalize_words_vector(words: &[&str]) -> Vec { [INFO] [stdout] | ^^^^^^^^^^^^^^^^^^^^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: function `capitalize_words_string` is never used [INFO] [stdout] --> exercises/18_iterators/iterators2.rs:23:4 [INFO] [stdout] | [INFO] [stdout] 23 | fn capitalize_words_string(words: &[&str]) -> String { [INFO] [stdout] | ^^^^^^^^^^^^^^^^^^^^^^^ [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 `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: 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: 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: struct `ReportCard` is never constructed [INFO] [stdout] --> exercises/quizzes/quiz3.rs:15:8 [INFO] [stdout] | [INFO] [stdout] 15 | 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] --> exercises/quizzes/quiz3.rs:23:8 [INFO] [stdout] | [INFO] [stdout] 22 | impl ReportCard { [INFO] [stdout] | ---------------------------------------- method in this implementation [INFO] [stdout] 23 | fn print(&self) -> String { [INFO] [stdout] | ^^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] error: this conversion is useless `&str` to `&str` [INFO] [stdout] --> solutions/09_strings/strings4.rs:24:18 [INFO] [stdout] | [INFO] [stdout] 24 | string_slice("nice weather".into()); [INFO] [stdout] | ^^^^^^^^^^^^^^^^^^^^^ [INFO] [stdout] | [INFO] [stdout] = note: `#[deny(self_type_conversion)]` on by default [INFO] [stdout] [INFO] [stdout] [INFO] [stderr] error: could not compile `exercises` (bin "strings4_sol" test) due to 1 previous error [INFO] [stderr] warning: build failed, waiting for other jobs to finish... [INFO] running `Command { std: "docker" "inspect" "2b497d0dc891844bf68aefa5784af89000e5be69066bacc025b63460e97c9bfe", kill_on_drop: false }` [INFO] running `Command { std: "docker" "rm" "-f" "2b497d0dc891844bf68aefa5784af89000e5be69066bacc025b63460e97c9bfe", kill_on_drop: false }` [INFO] [stdout] 2b497d0dc891844bf68aefa5784af89000e5be69066bacc025b63460e97c9bfe