[INFO] cloning repository https://github.com/sjmann/rust_quiz
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/sjmann/rust_quiz" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fsjmann%2Frust_quiz", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fsjmann%2Frust_quiz'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] ba945bcb65e3ef430e24aee2b9b7758749e0e656
[INFO] testing sjmann/rust_quiz against beta-2021-09-08 for beta-1.56-1
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fsjmann%2Frust_quiz" "/workspace/builds/worker-13/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-13/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/sjmann/rust_quiz on toolchain beta-2021-09-08
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+beta-2021-09-08" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/sjmann/rust_quiz
[INFO] finished tweaking git repo https://github.com/sjmann/rust_quiz
[INFO] tweaked toml for git repo https://github.com/sjmann/rust_quiz written to /workspace/builds/worker-13/source/Cargo.toml
[INFO] crate git repo https://github.com/sjmann/rust_quiz already has a lockfile, it will not be regenerated
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+beta-2021-09-08" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-13/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-13/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:a89201d6b5b9fd45c15d5952ece0a0129e7e80cb26ec023fd59cf09bc26f1604" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2021-09-08" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 8dab2135ed957c00aae01edf99b658a66d8bcfb05780df89b1dda73bd7418f22
[INFO] running `Command { std: "docker" "start" "-a" "8dab2135ed957c00aae01edf99b658a66d8bcfb05780df89b1dda73bd7418f22", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "8dab2135ed957c00aae01edf99b658a66d8bcfb05780df89b1dda73bd7418f22", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "8dab2135ed957c00aae01edf99b658a66d8bcfb05780df89b1dda73bd7418f22", kill_on_drop: false }`
[INFO] [stdout] 8dab2135ed957c00aae01edf99b658a66d8bcfb05780df89b1dda73bd7418f22
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-13/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-13/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=warn" "-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:a89201d6b5b9fd45c15d5952ece0a0129e7e80cb26ec023fd59cf09bc26f1604" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2021-09-08" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] df6c980c31b701f77582a70fb411735151cf7cc50b64c92dd508f044306a057a
[INFO] running `Command { std: "docker" "start" "-a" "df6c980c31b701f77582a70fb411735151cf7cc50b64c92dd508f044306a057a", kill_on_drop: false }`
[INFO] [stderr]    Compiling rust_quiz v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: field is never read: `chapter`
[INFO] [stdout]  --> src/io_quiz/question.rs:4:5
[INFO] [stdout]   |
[INFO] [stdout] 4 |     chapter: u8,
[INFO] [stdout]   |     ^^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 1 warning emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 1.33s
[INFO] running `Command { std: "docker" "inspect" "df6c980c31b701f77582a70fb411735151cf7cc50b64c92dd508f044306a057a", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "df6c980c31b701f77582a70fb411735151cf7cc50b64c92dd508f044306a057a", kill_on_drop: false }`
[INFO] [stdout] df6c980c31b701f77582a70fb411735151cf7cc50b64c92dd508f044306a057a
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-13/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-13/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=warn" "-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:a89201d6b5b9fd45c15d5952ece0a0129e7e80cb26ec023fd59cf09bc26f1604" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2021-09-08" "test" "--frozen" "--no-run" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] d58b7413f848e0ef87742a7555d8c53cc363161983b7866fdae434d69157cd68
[INFO] running `Command { std: "docker" "start" "-a" "d58b7413f848e0ef87742a7555d8c53cc363161983b7866fdae434d69157cd68", kill_on_drop: false }`
[INFO] [stderr]    Compiling rust_quiz v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: field is never read: `chapter`
[INFO] [stdout]  --> src/io_quiz/question.rs:4:5
[INFO] [stdout]   |
[INFO] [stdout] 4 |     chapter: u8,
[INFO] [stdout]   |     ^^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 1 warning emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 0.64s
[INFO] running `Command { std: "docker" "inspect" "d58b7413f848e0ef87742a7555d8c53cc363161983b7866fdae434d69157cd68", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "d58b7413f848e0ef87742a7555d8c53cc363161983b7866fdae434d69157cd68", kill_on_drop: false }`
[INFO] [stdout] d58b7413f848e0ef87742a7555d8c53cc363161983b7866fdae434d69157cd68
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-13/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-13/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=warn" "-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:a89201d6b5b9fd45c15d5952ece0a0129e7e80cb26ec023fd59cf09bc26f1604" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2021-09-08" "test" "--frozen", kill_on_drop: false }`
[INFO] [stdout] 5fd4ebdd58b8102b32d303dc6937a8f1ab873dfc259a801fc87d45e3d42f3fc7
[INFO] running `Command { std: "docker" "start" "-a" "5fd4ebdd58b8102b32d303dc6937a8f1ab873dfc259a801fc87d45e3d42f3fc7", kill_on_drop: false }`
[INFO] [stderr] warning: field is never read: `chapter`
[INFO] [stderr]  --> src/io_quiz/question.rs:4:5
[INFO] [stderr]   |
[INFO] [stderr] 4 |     chapter: u8,
[INFO] [stderr]   |     ^^^^^^^^^^^
[INFO] [stderr]   |
[INFO] [stderr]   = note: `#[warn(dead_code)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: `rust_quiz` (bin "rust_quiz" test) generated 1 warning
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 0.01s
[INFO] [stderr]      Running unittests (/opt/rustwide/target/debug/deps/rust_quiz-002cb2101afa7c2f)
[INFO] [stdout] 
[INFO] [stdout] running 0 tests
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 0 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out; finished in 0.00s
[INFO] [stdout] 
[INFO] running `Command { std: "docker" "inspect" "5fd4ebdd58b8102b32d303dc6937a8f1ab873dfc259a801fc87d45e3d42f3fc7", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "5fd4ebdd58b8102b32d303dc6937a8f1ab873dfc259a801fc87d45e3d42f3fc7", kill_on_drop: false }`
[INFO] [stdout] 5fd4ebdd58b8102b32d303dc6937a8f1ab873dfc259a801fc87d45e3d42f3fc7