[INFO] cloning repository https://github.com/haishenming/learn_rust_the_hard_way
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/haishenming/learn_rust_the_hard_way" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fhaishenming%2Flearn_rust_the_hard_way", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fhaishenming%2Flearn_rust_the_hard_way'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 50d153259cd5c3aa51b519cfd9d2b6775448ece3
[INFO] testing haishenming/learn_rust_the_hard_way 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%2Fhaishenming%2Flearn_rust_the_hard_way" "/workspace/builds/worker-8/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-8/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/haishenming/learn_rust_the_hard_way 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/haishenming/learn_rust_the_hard_way
[INFO] finished tweaking git repo https://github.com/haishenming/learn_rust_the_hard_way
[INFO] tweaked toml for git repo https://github.com/haishenming/learn_rust_the_hard_way written to /workspace/builds/worker-8/source/Cargo.toml
[INFO] crate git repo https://github.com/haishenming/learn_rust_the_hard_way 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-8/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-8/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] 0f7bdc6cbc8aa93f20b8e258c47f7d5f2e787d958e976b49747bb4da55468b1e
[INFO] running `Command { std: "docker" "start" "-a" "0f7bdc6cbc8aa93f20b8e258c47f7d5f2e787d958e976b49747bb4da55468b1e", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "0f7bdc6cbc8aa93f20b8e258c47f7d5f2e787d958e976b49747bb4da55468b1e", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "0f7bdc6cbc8aa93f20b8e258c47f7d5f2e787d958e976b49747bb4da55468b1e", kill_on_drop: false }`
[INFO] [stdout] 0f7bdc6cbc8aa93f20b8e258c47f7d5f2e787d958e976b49747bb4da55468b1e
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-8/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-8/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] c52ea1b933fc47a7e2b4e81592665466cbcbac6604825a403ac0f9cdcfd16b9a
[INFO] running `Command { std: "docker" "start" "-a" "c52ea1b933fc47a7e2b4e81592665466cbcbac6604825a403ac0f9cdcfd16b9a", kill_on_drop: false }`
[INFO] [stderr]    Compiling learn_rust_the_hard_way v0.1.0 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 1.28s
[INFO] running `Command { std: "docker" "inspect" "c52ea1b933fc47a7e2b4e81592665466cbcbac6604825a403ac0f9cdcfd16b9a", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "c52ea1b933fc47a7e2b4e81592665466cbcbac6604825a403ac0f9cdcfd16b9a", kill_on_drop: false }`
[INFO] [stdout] c52ea1b933fc47a7e2b4e81592665466cbcbac6604825a403ac0f9cdcfd16b9a
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-8/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-8/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] 787b8e6e89007d82f1d268cfb2dfe6f2df4bb7f267ea238b4accc87a9b94df70
[INFO] running `Command { std: "docker" "start" "-a" "787b8e6e89007d82f1d268cfb2dfe6f2df4bb7f267ea238b4accc87a9b94df70", kill_on_drop: false }`
[INFO] [stderr]    Compiling learn_rust_the_hard_way v0.1.0 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 0.54s
[INFO] running `Command { std: "docker" "inspect" "787b8e6e89007d82f1d268cfb2dfe6f2df4bb7f267ea238b4accc87a9b94df70", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "787b8e6e89007d82f1d268cfb2dfe6f2df4bb7f267ea238b4accc87a9b94df70", kill_on_drop: false }`
[INFO] [stdout] 787b8e6e89007d82f1d268cfb2dfe6f2df4bb7f267ea238b4accc87a9b94df70
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-8/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-8/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] 87611768b3e0ffc8a53a5a29fe761900c5f4ce49ace2650644b415dcfe0c7b42
[INFO] running `Command { std: "docker" "start" "-a" "87611768b3e0ffc8a53a5a29fe761900c5f4ce49ace2650644b415dcfe0c7b42", kill_on_drop: false }`
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 0.01s
[INFO] [stderr]      Running unittests (/opt/rustwide/target/debug/deps/learn_rust_the_hard_way-3be30812db11ac9a)
[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" "87611768b3e0ffc8a53a5a29fe761900c5f4ce49ace2650644b415dcfe0c7b42", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "87611768b3e0ffc8a53a5a29fe761900c5f4ce49ace2650644b415dcfe0c7b42", kill_on_drop: false }`
[INFO] [stdout] 87611768b3e0ffc8a53a5a29fe761900c5f4ce49ace2650644b415dcfe0c7b42