[INFO] cloning repository https://github.com/moisutsu-playground/rust-serde-yaml-playground
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/moisutsu-playground/rust-serde-yaml-playground" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fmoisutsu-playground%2Frust-serde-yaml-playground", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fmoisutsu-playground%2Frust-serde-yaml-playground'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 18f59fef45ed0696d2fd9ef14fe810f1a0c34411
[INFO] testing moisutsu-playground/rust-serde-yaml-playground against 1.55.0 for beta-1.56-1
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fmoisutsu-playground%2Frust-serde-yaml-playground" "/workspace/builds/worker-7/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-7/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/moisutsu-playground/rust-serde-yaml-playground on toolchain 1.55.0
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+1.55.0" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/moisutsu-playground/rust-serde-yaml-playground
[INFO] finished tweaking git repo https://github.com/moisutsu-playground/rust-serde-yaml-playground
[INFO] tweaked toml for git repo https://github.com/moisutsu-playground/rust-serde-yaml-playground written to /workspace/builds/worker-7/source/Cargo.toml
[INFO] crate git repo https://github.com/moisutsu-playground/rust-serde-yaml-playground already has a lockfile, it will not be regenerated
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+1.55.0" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-7/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-7/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" "+1.55.0" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 46680cf96bfe56deaec83f5f5f86841ea290b00e965efb4acfebaba8b6f34c2c
[INFO] running `Command { std: "docker" "start" "-a" "46680cf96bfe56deaec83f5f5f86841ea290b00e965efb4acfebaba8b6f34c2c", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "46680cf96bfe56deaec83f5f5f86841ea290b00e965efb4acfebaba8b6f34c2c", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "46680cf96bfe56deaec83f5f5f86841ea290b00e965efb4acfebaba8b6f34c2c", kill_on_drop: false }`
[INFO] [stdout] 46680cf96bfe56deaec83f5f5f86841ea290b00e965efb4acfebaba8b6f34c2c
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-7/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-7/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" "+1.55.0" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] eedced095d6a8db417eff1df1b010657c7f81d7d48fb1a6762630c8adc363ecd
[INFO] running `Command { std: "docker" "start" "-a" "eedced095d6a8db417eff1df1b010657c7f81d7d48fb1a6762630c8adc363ecd", kill_on_drop: false }`
[INFO] [stderr]    Compiling yaml-rust v0.4.4
[INFO] [stderr]    Compiling rust-serde-yaml-playground v0.1.0 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 3.36s
[INFO] running `Command { std: "docker" "inspect" "eedced095d6a8db417eff1df1b010657c7f81d7d48fb1a6762630c8adc363ecd", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "eedced095d6a8db417eff1df1b010657c7f81d7d48fb1a6762630c8adc363ecd", kill_on_drop: false }`
[INFO] [stdout] eedced095d6a8db417eff1df1b010657c7f81d7d48fb1a6762630c8adc363ecd
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-7/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-7/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" "+1.55.0" "test" "--frozen" "--no-run" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 9d174697f3dd01f3d04ff8698df137cee4ae4e30bb043a4ba2837302bf6423a2
[INFO] running `Command { std: "docker" "start" "-a" "9d174697f3dd01f3d04ff8698df137cee4ae4e30bb043a4ba2837302bf6423a2", kill_on_drop: false }`
[INFO] [stderr]    Compiling rust-serde-yaml-playground v0.1.0 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 0.68s
[INFO] running `Command { std: "docker" "inspect" "9d174697f3dd01f3d04ff8698df137cee4ae4e30bb043a4ba2837302bf6423a2", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "9d174697f3dd01f3d04ff8698df137cee4ae4e30bb043a4ba2837302bf6423a2", kill_on_drop: false }`
[INFO] [stdout] 9d174697f3dd01f3d04ff8698df137cee4ae4e30bb043a4ba2837302bf6423a2
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-7/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-7/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" "+1.55.0" "test" "--frozen", kill_on_drop: false }`
[INFO] [stdout] 233db2a83be2c2b41d62da2e9ed3e805b50042f8ba2c55a818b17d7cde127d4a
[INFO] running `Command { std: "docker" "start" "-a" "233db2a83be2c2b41d62da2e9ed3e805b50042f8ba2c55a818b17d7cde127d4a", kill_on_drop: false }`
[INFO] [stdout] 
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 0.01s
[INFO] [stdout] running 0 tests
[INFO] [stderr]      Running unittests (/opt/rustwide/target/debug/deps/rust_serde_yaml_playground-75df9a9cfc3f74b9)
[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" "233db2a83be2c2b41d62da2e9ed3e805b50042f8ba2c55a818b17d7cde127d4a", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "233db2a83be2c2b41d62da2e9ed3e805b50042f8ba2c55a818b17d7cde127d4a", kill_on_drop: false }`
[INFO] [stdout] 233db2a83be2c2b41d62da2e9ed3e805b50042f8ba2c55a818b17d7cde127d4a