[INFO] cloning repository https://github.com/X-leaf7/hackerrank-rust [INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/X-leaf7/hackerrank-rust" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FX-leaf7%2Fhackerrank-rust", kill_on_drop: false }` [INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FX-leaf7%2Fhackerrank-rust'... [INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }` [INFO] [stdout] 1cdd063cbcc490f1f7f8b328f525049cf0f9f193 [INFO] building X-leaf7/hackerrank-rust 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%2FX-leaf7%2Fhackerrank-rust" "/workspace/builds/worker-6-tc2/source", kill_on_drop: false }` [INFO] [stderr] Cloning into '/workspace/builds/worker-6-tc2/source'... [INFO] [stderr] done. [INFO] validating manifest of git repo https://github.com/X-leaf7/hackerrank-rust 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/X-leaf7/hackerrank-rust [INFO] finished tweaking git repo https://github.com/X-leaf7/hackerrank-rust [INFO] tweaked toml for git repo https://github.com/X-leaf7/hackerrank-rust written to /workspace/builds/worker-6-tc2/source/Cargo.toml [INFO] crate git repo https://github.com/X-leaf7/hackerrank-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" "+9b5e8b16bd1c4acf4cf8e6880368314cf021a987" "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-6-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-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] d949289c337e5ae47d673bb3f5b16ca29a1c315b652adfd7b7edfff1449ae52e [INFO] running `Command { std: "docker" "start" "-a" "d949289c337e5ae47d673bb3f5b16ca29a1c315b652adfd7b7edfff1449ae52e", kill_on_drop: false }` [INFO] running `Command { std: "docker" "inspect" "d949289c337e5ae47d673bb3f5b16ca29a1c315b652adfd7b7edfff1449ae52e", kill_on_drop: false }` [INFO] running `Command { std: "docker" "rm" "-f" "d949289c337e5ae47d673bb3f5b16ca29a1c315b652adfd7b7edfff1449ae52e", kill_on_drop: false }` [INFO] [stdout] d949289c337e5ae47d673bb3f5b16ca29a1c315b652adfd7b7edfff1449ae52e [INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-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] 9ec1068d457b3084ff5e6381e906de8eeb963c57aea71fa5ae68535c2e5380ca [INFO] running `Command { std: "docker" "start" "-a" "9ec1068d457b3084ff5e6381e906de8eeb963c57aea71fa5ae68535c2e5380ca", kill_on_drop: false }` [INFO] [stderr] Compiling plus-minus v0.1.0 (/opt/rustwide/workdir/plus-minus) [INFO] [stderr] Compiling counting-sort v0.1.0 (/opt/rustwide/workdir/counting-sort) [INFO] [stderr] Compiling breaking-records v0.1.0 (/opt/rustwide/workdir/breaking-records) [INFO] [stderr] Compiling pangrams v0.1.0 (/opt/rustwide/workdir/pangrams) [INFO] [stderr] Compiling grading-students v0.1.0 (/opt/rustwide/workdir/grading-students) [INFO] [stderr] Compiling read-inputs v0.1.0 (/opt/rustwide/workdir/read-inputs) [INFO] [stderr] Compiling lonely-integer v0.1.0 (/opt/rustwide/workdir/lonely-integer) [INFO] [stderr] Compiling camel-case v0.1.0 (/opt/rustwide/workdir/camel-case) [INFO] [stderr] Compiling counting-valleys v0.1.0 (/opt/rustwide/workdir/counting-valleys) [INFO] [stderr] Compiling diagonal-difference v0.1.0 (/opt/rustwide/workdir/diagonal-difference) [INFO] [stderr] Compiling flipping-bits v0.1.0 (/opt/rustwide/workdir/flipping-bits) [INFO] [stderr] Compiling divisible-sum-pairs v0.1.0 (/opt/rustwide/workdir/divisible-sum-pairs) [INFO] [stderr] Compiling mars-exploration v0.1.0 (/opt/rustwide/workdir/mars-exploration) [INFO] [stderr] Compiling mini-max-sum v0.1.0 (/opt/rustwide/workdir/mini-max-sum) [INFO] [stderr] Compiling sparse-arrays v0.1.0 (/opt/rustwide/workdir/sparse-arrays) [INFO] [stderr] Compiling time-conversion v0.1.0 (/opt/rustwide/workdir/time-conversion) [INFO] [stdout] warning: unused variable: `n` [INFO] [stdout] --> grading-students/src/main.rs:21:9 [INFO] [stdout] | [INFO] [stdout] 21 | let n = stdin_iterator.next().unwrap().unwrap().trim().parse::().unwrap(); [INFO] [stdout] | ^ help: if this is intentional, prefix it with an underscore: `_n` [INFO] [stdout] | [INFO] [stdout] = note: `#[warn(unused_variables)]` on by default [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused variable: `n` [INFO] [stdout] --> read-inputs/src/main.rs:7:9 [INFO] [stdout] | [INFO] [stdout] 7 | let n = stdin_iterator.next().unwrap().unwrap().trim().parse::().unwrap(); [INFO] [stdout] | ^ help: if this is intentional, prefix it with an underscore: `_n` [INFO] [stdout] | [INFO] [stdout] = note: `#[warn(unused_variables)]` on by default [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused variable: `values` [INFO] [stdout] --> read-inputs/src/main.rs:9:9 [INFO] [stdout] | [INFO] [stdout] 9 | let values: Vec = stdin_iterator.next().unwrap().unwrap() [INFO] [stdout] | ^^^^^^ help: if this is intentional, prefix it with an underscore: `_values` [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused variable: `steps` [INFO] [stdout] --> counting-valleys/src/main.rs:3:21 [INFO] [stdout] | [INFO] [stdout] 3 | fn counting_valleys(steps: i32, path: &str) -> i32 { [INFO] [stdout] | ^^^^^ help: if this is intentional, prefix it with an underscore: `_steps` [INFO] [stdout] | [INFO] [stdout] = note: `#[warn(unused_variables)]` on by default [INFO] [stdout] [INFO] [stdout] [INFO] [stderr] Finished `dev` profile [unoptimized + debuginfo] target(s) in 0.30s [INFO] running `Command { std: "docker" "inspect" "9ec1068d457b3084ff5e6381e906de8eeb963c57aea71fa5ae68535c2e5380ca", kill_on_drop: false }` [INFO] running `Command { std: "docker" "rm" "-f" "9ec1068d457b3084ff5e6381e906de8eeb963c57aea71fa5ae68535c2e5380ca", kill_on_drop: false }` [INFO] [stdout] 9ec1068d457b3084ff5e6381e906de8eeb963c57aea71fa5ae68535c2e5380ca [INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-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" "test" "--frozen" "--no-run" "--message-format=json", kill_on_drop: false }` [INFO] [stdout] 1dd27ad7c7b61c76c5562a596527d10bd93e924a1851f0ca03064a9b17da11d6 [INFO] running `Command { std: "docker" "start" "-a" "1dd27ad7c7b61c76c5562a596527d10bd93e924a1851f0ca03064a9b17da11d6", kill_on_drop: false }` [INFO] [stderr] Compiling grading-students v0.1.0 (/opt/rustwide/workdir/grading-students) [INFO] [stderr] Compiling breaking-records v0.1.0 (/opt/rustwide/workdir/breaking-records) [INFO] [stderr] Compiling camel-case v0.1.0 (/opt/rustwide/workdir/camel-case) [INFO] [stderr] Compiling mini-max-sum v0.1.0 (/opt/rustwide/workdir/mini-max-sum) [INFO] [stderr] Compiling lonely-integer v0.1.0 (/opt/rustwide/workdir/lonely-integer) [INFO] [stderr] Compiling time-conversion v0.1.0 (/opt/rustwide/workdir/time-conversion) [INFO] [stderr] Compiling counting-valleys v0.1.0 (/opt/rustwide/workdir/counting-valleys) [INFO] [stderr] Compiling plus-minus v0.1.0 (/opt/rustwide/workdir/plus-minus) [INFO] [stderr] Compiling divisible-sum-pairs v0.1.0 (/opt/rustwide/workdir/divisible-sum-pairs) [INFO] [stderr] Compiling sparse-arrays v0.1.0 (/opt/rustwide/workdir/sparse-arrays) [INFO] [stderr] Compiling diagonal-difference v0.1.0 (/opt/rustwide/workdir/diagonal-difference) [INFO] [stderr] Compiling counting-sort v0.1.0 (/opt/rustwide/workdir/counting-sort) [INFO] [stderr] Compiling mars-exploration v0.1.0 (/opt/rustwide/workdir/mars-exploration) [INFO] [stderr] Compiling flipping-bits v0.1.0 (/opt/rustwide/workdir/flipping-bits) [INFO] [stderr] Compiling pangrams v0.1.0 (/opt/rustwide/workdir/pangrams) [INFO] [stderr] Compiling read-inputs v0.1.0 (/opt/rustwide/workdir/read-inputs) [INFO] [stdout] warning: unused variable: `steps` [INFO] [stdout] --> counting-valleys/src/main.rs:3:21 [INFO] [stdout] | [INFO] [stdout] 3 | fn counting_valleys(steps: i32, path: &str) -> i32 { [INFO] [stdout] | ^^^^^ help: if this is intentional, prefix it with an underscore: `_steps` [INFO] [stdout] | [INFO] [stdout] = note: `#[warn(unused_variables)]` on by default [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused variable: `n` [INFO] [stdout] --> grading-students/src/main.rs:21:9 [INFO] [stdout] | [INFO] [stdout] 21 | let n = stdin_iterator.next().unwrap().unwrap().trim().parse::().unwrap(); [INFO] [stdout] | ^ help: if this is intentional, prefix it with an underscore: `_n` [INFO] [stdout] | [INFO] [stdout] = note: `#[warn(unused_variables)]` on by default [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused variable: `n` [INFO] [stdout] --> read-inputs/src/main.rs:7:9 [INFO] [stdout] | [INFO] [stdout] 7 | let n = stdin_iterator.next().unwrap().unwrap().trim().parse::().unwrap(); [INFO] [stdout] | ^ help: if this is intentional, prefix it with an underscore: `_n` [INFO] [stdout] | [INFO] [stdout] = note: `#[warn(unused_variables)]` on by default [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused variable: `values` [INFO] [stdout] --> read-inputs/src/main.rs:9:9 [INFO] [stdout] | [INFO] [stdout] 9 | let values: Vec = stdin_iterator.next().unwrap().unwrap() [INFO] [stdout] | ^^^^^^ help: if this is intentional, prefix it with an underscore: `_values` [INFO] [stdout] [INFO] [stdout] [INFO] [stderr] Finished `test` profile [unoptimized + debuginfo] target(s) in 0.17s [INFO] running `Command { std: "docker" "inspect" "1dd27ad7c7b61c76c5562a596527d10bd93e924a1851f0ca03064a9b17da11d6", kill_on_drop: false }` [INFO] running `Command { std: "docker" "rm" "-f" "1dd27ad7c7b61c76c5562a596527d10bd93e924a1851f0ca03064a9b17da11d6", kill_on_drop: false }` [INFO] [stdout] 1dd27ad7c7b61c76c5562a596527d10bd93e924a1851f0ca03064a9b17da11d6