[INFO] fetching crate zoo 0.0.0...
[INFO] testing zoo-0.0.0 against 1.55.0 for beta-1.56-1
[INFO] extracting crate zoo 0.0.0 into /workspace/builds/worker-4/source
[INFO] validating manifest of crates.io crate zoo 0.0.0 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 crates.io crate zoo 0.0.0
[INFO] finished tweaking crates.io crate zoo 0.0.0
[INFO] tweaked toml for crates.io crate zoo 0.0.0 written to /workspace/builds/worker-4/source/Cargo.toml
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+1.55.0" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update", kill_on_drop: false }`
[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-4/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4/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] 505e07952c320c77c54fb9c6b9ba5cc1a289294b9ebd0d2d2257cba4dd3a0699
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] running `Command { std: "docker" "start" "-a" "505e07952c320c77c54fb9c6b9ba5cc1a289294b9ebd0d2d2257cba4dd3a0699", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "505e07952c320c77c54fb9c6b9ba5cc1a289294b9ebd0d2d2257cba4dd3a0699", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "505e07952c320c77c54fb9c6b9ba5cc1a289294b9ebd0d2d2257cba4dd3a0699", kill_on_drop: false }`
[INFO] [stdout] 505e07952c320c77c54fb9c6b9ba5cc1a289294b9ebd0d2d2257cba4dd3a0699
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4/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] 5328df69245f228f5f5bc1823eb8ba622a797527f8d6f34c59b42ce600c33b9a
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] running `Command { std: "docker" "start" "-a" "5328df69245f228f5f5bc1823eb8ba622a797527f8d6f34c59b42ce600c33b9a", kill_on_drop: false }`
[INFO] [stderr]    Compiling zoo v0.0.0 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.65s
[INFO] running `Command { std: "docker" "inspect" "5328df69245f228f5f5bc1823eb8ba622a797527f8d6f34c59b42ce600c33b9a", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "5328df69245f228f5f5bc1823eb8ba622a797527f8d6f34c59b42ce600c33b9a", kill_on_drop: false }`
[INFO] [stdout] 5328df69245f228f5f5bc1823eb8ba622a797527f8d6f34c59b42ce600c33b9a
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4/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] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] [stdout] afc4b8f6ae69966da35948886fea67b86fa6458935637b558b903a5a39b78ebc
[INFO] running `Command { std: "docker" "start" "-a" "afc4b8f6ae69966da35948886fea67b86fa6458935637b558b903a5a39b78ebc", kill_on_drop: false }`
[INFO] [stderr]    Compiling zoo v0.0.0 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 0.75s
[INFO] running `Command { std: "docker" "inspect" "afc4b8f6ae69966da35948886fea67b86fa6458935637b558b903a5a39b78ebc", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "afc4b8f6ae69966da35948886fea67b86fa6458935637b558b903a5a39b78ebc", kill_on_drop: false }`
[INFO] [stdout] afc4b8f6ae69966da35948886fea67b86fa6458935637b558b903a5a39b78ebc
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4/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] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] [stdout] aadacc5dad2c2b698db0ffd1ce3efdc16e4a93d9dd063d012da1a6e279009b7a
[INFO] running `Command { std: "docker" "start" "-a" "aadacc5dad2c2b698db0ffd1ce3efdc16e4a93d9dd063d012da1a6e279009b7a", kill_on_drop: false }`
[INFO] [stdout] 
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 0.09s
[INFO] [stdout] running 1 test
[INFO] [stderr]      Running unittests (/opt/rustwide/target/debug/deps/zoo-2331dbba408106fe)
[INFO] [stdout] test tests::it_works ... ok
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 1 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out; finished in 0.01s
[INFO] [stdout] 
[INFO] running `Command { std: "docker" "inspect" "aadacc5dad2c2b698db0ffd1ce3efdc16e4a93d9dd063d012da1a6e279009b7a", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "aadacc5dad2c2b698db0ffd1ce3efdc16e4a93d9dd063d012da1a6e279009b7a", kill_on_drop: false }`
[INFO] [stdout] aadacc5dad2c2b698db0ffd1ce3efdc16e4a93d9dd063d012da1a6e279009b7a