[INFO] cloning repository https://github.com/Kindlewing/challenges [INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/Kindlewing/challenges" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FKindlewing%2Fchallenges", kill_on_drop: false }` [INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FKindlewing%2Fchallenges'... [INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }` [INFO] [stdout] 3da26e3c2f12b05ee11c122087dacc1ba550db31 [INFO] checking Kindlewing/challenges against master#0f442e265c165c0a78633bef98de18517815150c for pr-129073 [INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FKindlewing%2Fchallenges" "/workspace/builds/worker-0-tc1/source", kill_on_drop: false }` [INFO] [stderr] Cloning into '/workspace/builds/worker-0-tc1/source'... [INFO] [stderr] done. [INFO] validating manifest of git repo https://github.com/Kindlewing/challenges on toolchain 0f442e265c165c0a78633bef98de18517815150c [INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+0f442e265c165c0a78633bef98de18517815150c" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }` [INFO] started tweaking git repo https://github.com/Kindlewing/challenges [INFO] finished tweaking git repo https://github.com/Kindlewing/challenges [INFO] tweaked toml for git repo https://github.com/Kindlewing/challenges written to /workspace/builds/worker-0-tc1/source/Cargo.toml [INFO] crate git repo https://github.com/Kindlewing/challenges 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" "+0f442e265c165c0a78633bef98de18517815150c" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }` [INFO] [stderr] Blocking waiting for file lock on package cache [ERROR] error running command: no output for 300 seconds [ERROR] this task or one of its parent failed! [ERROR] no output for 300 seconds [ERROR] note: run with `RUST_BACKTRACE=1` to display a backtrace. [INFO] checking Kindlewing/challenges against try#774bd5ba31b89dab12d58c29690ad9f7e5c9f063 for pr-129073 [INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FKindlewing%2Fchallenges" "/workspace/builds/worker-0-tc2/source", kill_on_drop: false }` [INFO] [stderr] Cloning into '/workspace/builds/worker-0-tc2/source'... [INFO] [stderr] done. [INFO] validating manifest of git repo https://github.com/Kindlewing/challenges on toolchain 774bd5ba31b89dab12d58c29690ad9f7e5c9f063 [INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+774bd5ba31b89dab12d58c29690ad9f7e5c9f063" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }` [INFO] started tweaking git repo https://github.com/Kindlewing/challenges [INFO] finished tweaking git repo https://github.com/Kindlewing/challenges [INFO] tweaked toml for git repo https://github.com/Kindlewing/challenges written to /workspace/builds/worker-0-tc2/source/Cargo.toml [INFO] crate git repo https://github.com/Kindlewing/challenges 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" "+774bd5ba31b89dab12d58c29690ad9f7e5c9f063" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }` [INFO] [stderr] Blocking waiting for file lock on package cache [INFO] [stderr] Blocking waiting for file lock on package cache [ERROR] error running command: no output for 300 seconds [INFO] checking Kindlewing/challenges against try#774bd5ba31b89dab12d58c29690ad9f7e5c9f063 for pr-129073 [INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FKindlewing%2Fchallenges" "/workspace/builds/worker-0-tc2/source", kill_on_drop: false }` [INFO] [stderr] Cloning into '/workspace/builds/worker-0-tc2/source'... [INFO] [stderr] done. [INFO] validating manifest of git repo https://github.com/Kindlewing/challenges on toolchain 774bd5ba31b89dab12d58c29690ad9f7e5c9f063 [INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+774bd5ba31b89dab12d58c29690ad9f7e5c9f063" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }` [INFO] started tweaking git repo https://github.com/Kindlewing/challenges [INFO] finished tweaking git repo https://github.com/Kindlewing/challenges [INFO] tweaked toml for git repo https://github.com/Kindlewing/challenges written to /workspace/builds/worker-0-tc2/source/Cargo.toml [INFO] crate git repo https://github.com/Kindlewing/challenges 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" "+774bd5ba31b89dab12d58c29690ad9f7e5c9f063" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }` [INFO] [stderr] Blocking waiting for file lock on package cache [INFO] [stderr] Blocking waiting for file lock on package cache [INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-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@sha256:923055f121b5182466d55868a8b05e67af8ba4a3a3f6bad814e953ca3cd3ac2a" "/opt/rustwide/cargo-home/bin/cargo" "+774bd5ba31b89dab12d58c29690ad9f7e5c9f063" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }` [INFO] [stdout] c9019a6f027bbc3094acf395f33f44b3723e5451b5f261c25a30b2ef4938a942 [INFO] running `Command { std: "docker" "start" "-a" "c9019a6f027bbc3094acf395f33f44b3723e5451b5f261c25a30b2ef4938a942", kill_on_drop: false }` [INFO] running `Command { std: "docker" "inspect" "c9019a6f027bbc3094acf395f33f44b3723e5451b5f261c25a30b2ef4938a942", kill_on_drop: false }` [INFO] running `Command { std: "docker" "rm" "-f" "c9019a6f027bbc3094acf395f33f44b3723e5451b5f261c25a30b2ef4938a942", kill_on_drop: false }` [INFO] [stdout] c9019a6f027bbc3094acf395f33f44b3723e5451b5f261c25a30b2ef4938a942 [INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-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@sha256:923055f121b5182466d55868a8b05e67af8ba4a3a3f6bad814e953ca3cd3ac2a" "/opt/rustwide/cargo-home/bin/cargo" "+774bd5ba31b89dab12d58c29690ad9f7e5c9f063" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }` [INFO] [stdout] 69d0cc20c6031253d2b25800f9f210f119f2d8a0784786bee2792762f10f634a [INFO] running `Command { std: "docker" "start" "-a" "69d0cc20c6031253d2b25800f9f210f119f2d8a0784786bee2792762f10f634a", kill_on_drop: false }` [INFO] [stderr] Checking challenges v0.1.0 (/opt/rustwide/workdir) [INFO] [stdout] warning: unused variable: `flowerbed` [INFO] [stdout] --> src/can_place_flowers.rs:1:17 [INFO] [stdout] | [INFO] [stdout] 1 | pub fn solution(flowerbed: Vec, n: i32) -> bool { [INFO] [stdout] | ^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_flowerbed` [INFO] [stdout] | [INFO] [stdout] = note: `#[warn(unused_variables)]` on by default [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused variable: `n` [INFO] [stdout] --> src/can_place_flowers.rs:1:38 [INFO] [stdout] | [INFO] [stdout] 1 | pub fn solution(flowerbed: Vec, n: i32) -> bool { [INFO] [stdout] | ^ help: if this is intentional, prefix it with an underscore: `_n` [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused variable: `str1` [INFO] [stdout] --> src/gcd_strings.rs:1:23 [INFO] [stdout] | [INFO] [stdout] 1 | pub fn gcd_of_strings(str1: String, str2: String) -> String { [INFO] [stdout] | ^^^^ help: if this is intentional, prefix it with an underscore: `_str1` [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused variable: `str2` [INFO] [stdout] --> src/gcd_strings.rs:1:37 [INFO] [stdout] | [INFO] [stdout] 1 | pub fn gcd_of_strings(str1: String, str2: String) -> String { [INFO] [stdout] | ^^^^ help: if this is intentional, prefix it with an underscore: `_str2` [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused variable: `s` [INFO] [stdout] --> src/reverse_vowels.rs:1:17 [INFO] [stdout] | [INFO] [stdout] 1 | pub fn solution(s: String) -> String { [INFO] [stdout] | ^ help: if this is intentional, prefix it with an underscore: `_s` [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: variable does not need to be mutable [INFO] [stdout] --> src/reverse_vowels.rs:2:9 [INFO] [stdout] | [INFO] [stdout] 2 | let mut reverse = String::new(); [INFO] [stdout] | ----^^^^^^^ [INFO] [stdout] | | [INFO] [stdout] | help: remove this `mut` [INFO] [stdout] | [INFO] [stdout] = note: `#[warn(unused_mut)]` on by default [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: 6 warnings emitted [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused variable: `flowerbed` [INFO] [stdout] --> src/can_place_flowers.rs:1:17 [INFO] [stdout] | [INFO] [stdout] 1 | pub fn solution(flowerbed: Vec, n: i32) -> bool { [INFO] [stdout] | ^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_flowerbed` [INFO] [stdout] | [INFO] [stdout] = note: `#[warn(unused_variables)]` on by default [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused variable: `n` [INFO] [stdout] --> src/can_place_flowers.rs:1:38 [INFO] [stdout] | [INFO] [stdout] 1 | pub fn solution(flowerbed: Vec, n: i32) -> bool { [INFO] [stdout] | ^ help: if this is intentional, prefix it with an underscore: `_n` [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused variable: `str1` [INFO] [stdout] --> src/gcd_strings.rs:1:23 [INFO] [stdout] | [INFO] [stdout] 1 | pub fn gcd_of_strings(str1: String, str2: String) -> String { [INFO] [stdout] | ^^^^ help: if this is intentional, prefix it with an underscore: `_str1` [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused variable: `str2` [INFO] [stdout] --> src/gcd_strings.rs:1:37 [INFO] [stdout] | [INFO] [stdout] 1 | pub fn gcd_of_strings(str1: String, str2: String) -> String { [INFO] [stdout] | ^^^^ help: if this is intentional, prefix it with an underscore: `_str2` [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused variable: `s` [INFO] [stdout] --> src/reverse_vowels.rs:1:17 [INFO] [stdout] | [INFO] [stdout] 1 | pub fn solution(s: String) -> String { [INFO] [stdout] | ^ help: if this is intentional, prefix it with an underscore: `_s` [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: variable does not need to be mutable [INFO] [stdout] --> src/reverse_vowels.rs:2:9 [INFO] [stdout] | [INFO] [stdout] 2 | let mut reverse = String::new(); [INFO] [stdout] | ----^^^^^^^ [INFO] [stdout] | | [INFO] [stdout] | help: remove this `mut` [INFO] [stdout] | [INFO] [stdout] = note: `#[warn(unused_mut)]` on by default [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: 6 warnings emitted [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused variable: `flowerbed` [INFO] [stdout] --> src/can_place_flowers.rs:1:17 [INFO] [stdout] | [INFO] [stdout] 1 | pub fn solution(flowerbed: Vec, n: i32) -> bool { [INFO] [stdout] | ^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_flowerbed` [INFO] [stdout] | [INFO] [stdout] = note: `#[warn(unused_variables)]` on by default [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused variable: `n` [INFO] [stdout] --> src/can_place_flowers.rs:1:38 [INFO] [stdout] | [INFO] [stdout] 1 | pub fn solution(flowerbed: Vec, n: i32) -> bool { [INFO] [stdout] | ^ help: if this is intentional, prefix it with an underscore: `_n` [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: function `solutiion` is never used [INFO] [stdout] --> src/kids_with_candies.rs:1:8 [INFO] [stdout] | [INFO] [stdout] 1 | pub fn solutiion(candies: Vec, extra_candies: i32) -> Vec { [INFO] [stdout] | ^^^^^^^^^ [INFO] [stdout] | [INFO] [stdout] = note: `#[warn(dead_code)]` on by default [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused variable: `flowerbed` [INFO] [stdout] --> src/can_place_flowers.rs:1:17 [INFO] [stdout] | [INFO] [stdout] 1 | pub fn solution(flowerbed: Vec, n: i32) -> bool { [INFO] [stdout] | ^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_flowerbed` [INFO] [stdout] | [INFO] [stdout] = note: `#[warn(unused_variables)]` on by default [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused variable: `n` [INFO] [stdout] --> src/can_place_flowers.rs:1:38 [INFO] [stdout] | [INFO] [stdout] 1 | pub fn solution(flowerbed: Vec, n: i32) -> bool { [INFO] [stdout] | ^ help: if this is intentional, prefix it with an underscore: `_n` [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: 3 warnings emitted [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: function `solutiion` is never used [INFO] [stdout] --> src/kids_with_candies.rs:1:8 [INFO] [stdout] | [INFO] [stdout] 1 | pub fn solutiion(candies: Vec, extra_candies: i32) -> Vec { [INFO] [stdout] | ^^^^^^^^^ [INFO] [stdout] | [INFO] [stdout] = note: `#[warn(dead_code)]` on by default [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: 3 warnings emitted [INFO] [stdout] [INFO] [stdout] [INFO] [stderr] Finished `dev` profile [unoptimized + debuginfo] target(s) in 0.15s [INFO] running `Command { std: "docker" "inspect" "69d0cc20c6031253d2b25800f9f210f119f2d8a0784786bee2792762f10f634a", kill_on_drop: false }` [INFO] running `Command { std: "docker" "rm" "-f" "69d0cc20c6031253d2b25800f9f210f119f2d8a0784786bee2792762f10f634a", kill_on_drop: false }` [INFO] [stdout] 69d0cc20c6031253d2b25800f9f210f119f2d8a0784786bee2792762f10f634a