[INFO] fetching crate dynamixel2-cli 0.2.0...
[INFO] testing dynamixel2-cli-0.2.0 against 1.55.0 for beta-1.56-1
[INFO] extracting crate dynamixel2-cli 0.2.0 into /workspace/builds/worker-16/source
[INFO] validating manifest of crates.io crate dynamixel2-cli 0.2.0 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 dynamixel2-cli 0.2.0
[INFO] finished tweaking crates.io crate dynamixel2-cli 0.2.0
[INFO] tweaked toml for crates.io crate dynamixel2-cli 0.2.0 written to /workspace/builds/worker-16/source/Cargo.toml
[INFO] crate crates.io crate dynamixel2-cli 0.2.0 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] [stderr]     Blocking waiting for file lock on package cache
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-16/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-16/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] aac695efc8e6e80b72ea9c8609635ca288079ee74d30fc6f1958eab8460ea670
[INFO] running `Command { std: "docker" "start" "-a" "aac695efc8e6e80b72ea9c8609635ca288079ee74d30fc6f1958eab8460ea670", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "aac695efc8e6e80b72ea9c8609635ca288079ee74d30fc6f1958eab8460ea670", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "aac695efc8e6e80b72ea9c8609635ca288079ee74d30fc6f1958eab8460ea670", kill_on_drop: false }`
[INFO] [stdout] aac695efc8e6e80b72ea9c8609635ca288079ee74d30fc6f1958eab8460ea670
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-16/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-16/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] 68278c1a83ff34e9b2402b154bf6b83dd35f0ce6778fc0f5f2bb2dfcee8c0fcd
[INFO] running `Command { std: "docker" "start" "-a" "68278c1a83ff34e9b2402b154bf6b83dd35f0ce6778fc0f5f2bb2dfcee8c0fcd", kill_on_drop: false }`
[INFO] [stderr]    Compiling libc v0.2.94
[INFO] [stderr]    Compiling proc-macro2 v1.0.26
[INFO] [stderr]    Compiling syn v1.0.72
[INFO] [stderr]    Compiling humantime v2.1.0
[INFO] [stderr]    Compiling heck v0.3.2
[INFO] [stderr]    Compiling dynamixel2 v0.2.0
[INFO] [stderr]    Compiling regex v1.5.3
[INFO] [stderr]    Compiling quote v1.0.9
[INFO] [stderr]    Compiling atty v0.2.14
[INFO] [stderr]    Compiling serial-core v0.4.0
[INFO] [stderr]    Compiling termios v0.2.2
[INFO] [stderr]    Compiling ioctl-rs v0.1.6
[INFO] [stderr]    Compiling clap v2.33.3
[INFO] [stderr]    Compiling env_logger v0.8.3
[INFO] [stderr]    Compiling serial-unix v0.4.0
[INFO] [stderr]    Compiling serial v0.4.0
[INFO] [stderr]    Compiling proc-macro-error-attr v1.0.4
[INFO] [stderr]    Compiling proc-macro-error v1.0.4
[INFO] [stderr]    Compiling structopt-derive v0.4.14
[INFO] [stderr]    Compiling structopt v0.3.21
[INFO] [stderr]    Compiling dynamixel2-cli v0.2.0 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 13.62s
[INFO] running `Command { std: "docker" "inspect" "68278c1a83ff34e9b2402b154bf6b83dd35f0ce6778fc0f5f2bb2dfcee8c0fcd", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "68278c1a83ff34e9b2402b154bf6b83dd35f0ce6778fc0f5f2bb2dfcee8c0fcd", kill_on_drop: false }`
[INFO] [stdout] 68278c1a83ff34e9b2402b154bf6b83dd35f0ce6778fc0f5f2bb2dfcee8c0fcd
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-16/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-16/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] 38d7be9843ec159e08f463f54de483007a727675a7e3ca39818ddf9169786799
[INFO] running `Command { std: "docker" "start" "-a" "38d7be9843ec159e08f463f54de483007a727675a7e3ca39818ddf9169786799", kill_on_drop: false }`
[INFO] [stderr]    Compiling dynamixel2-cli v0.2.0 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 0.77s
[INFO] running `Command { std: "docker" "inspect" "38d7be9843ec159e08f463f54de483007a727675a7e3ca39818ddf9169786799", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "38d7be9843ec159e08f463f54de483007a727675a7e3ca39818ddf9169786799", kill_on_drop: false }`
[INFO] [stdout] 38d7be9843ec159e08f463f54de483007a727675a7e3ca39818ddf9169786799
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-16/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-16/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] 1f2e6bbba2098b25ce287200c8679d7872a6785579391432a5792951b2841195
[INFO] running `Command { std: "docker" "start" "-a" "1f2e6bbba2098b25ce287200c8679d7872a6785579391432a5792951b2841195", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 2.16s
[INFO] [stderr]      Running unittests (/opt/rustwide/target/debug/deps/dynamixel2-53963d9c775d04a0)
[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" "1f2e6bbba2098b25ce287200c8679d7872a6785579391432a5792951b2841195", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "1f2e6bbba2098b25ce287200c8679d7872a6785579391432a5792951b2841195", kill_on_drop: false }`
[INFO] [stdout] 1f2e6bbba2098b25ce287200c8679d7872a6785579391432a5792951b2841195