[INFO] fetching crate sawtooth-xo 0.5.0...
[INFO] testing sawtooth-xo-0.5.0 against 1.55.0 for beta-1.56-1
[INFO] extracting crate sawtooth-xo 0.5.0 into /workspace/builds/worker-75/source
[INFO] validating manifest of crates.io crate sawtooth-xo 0.5.0 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 sawtooth-xo 0.5.0
[INFO] finished tweaking crates.io crate sawtooth-xo 0.5.0
[INFO] tweaked toml for crates.io crate sawtooth-xo 0.5.0 written to /workspace/builds/worker-75/source/Cargo.toml
[INFO] crate crates.io crate sawtooth-xo 0.5.0 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] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded base64 v0.5.2
[INFO] [stderr]   Downloaded sabre-sdk v0.4.2
[INFO] [stderr]   Downloaded rust-crypto-wasm v0.3.1
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-75/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-75/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] fa9ad71baf7dcbca0cdf1b368c48fda5bdc2bceeb19b898212e134c0c4c0c2ff
[INFO] running `Command { std: "docker" "start" "-a" "fa9ad71baf7dcbca0cdf1b368c48fda5bdc2bceeb19b898212e134c0c4c0c2ff", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "fa9ad71baf7dcbca0cdf1b368c48fda5bdc2bceeb19b898212e134c0c4c0c2ff", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "fa9ad71baf7dcbca0cdf1b368c48fda5bdc2bceeb19b898212e134c0c4c0c2ff", kill_on_drop: false }`
[INFO] [stdout] fa9ad71baf7dcbca0cdf1b368c48fda5bdc2bceeb19b898212e134c0c4c0c2ff
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-75/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-75/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] dc0e3619015a67481e961738a9399c96dda609574eb120a5b8c6a26cf03d9a31
[INFO] running `Command { std: "docker" "start" "-a" "dc0e3619015a67481e961738a9399c96dda609574eb120a5b8c6a26cf03d9a31", kill_on_drop: false }`
[INFO] [stderr]    Compiling libc v0.2.76
[INFO] [stderr]    Compiling serde v1.0.115
[INFO] [stderr]    Compiling proc-macro2 v1.0.19
[INFO] [stderr]    Compiling unicode-xid v0.2.1
[INFO] [stderr]    Compiling pkg-config v0.3.18
[INFO] [stderr]    Compiling syn v1.0.39
[INFO] [stderr]    Compiling log v0.4.11
[INFO] [stderr]    Compiling protobuf v2.17.0
[INFO] [stderr]    Compiling toml v0.2.1
[INFO] [stderr]    Compiling gcc v0.3.55
[INFO] [stderr]    Compiling ppv-lite86 v0.2.9
[INFO] [stderr]    Compiling error-chain v0.10.0
[INFO] [stderr]    Compiling cc v1.0.59
[INFO] [stderr]    Compiling remove_dir_all v0.5.3
[INFO] [stderr]    Compiling serde_json v1.0.57
[INFO] [stderr]    Compiling itoa v0.4.6
[INFO] [stderr]    Compiling nix v0.17.0
[INFO] [stderr]    Compiling crc32fast v1.2.0
[INFO] [stderr]    Compiling zmq v0.9.2
[INFO] [stderr]    Compiling odds v0.2.26
[INFO] [stderr]    Compiling serde_derive v1.0.115
[INFO] [stderr]    Compiling foreign-types-shared v0.1.1
[INFO] [stderr]    Compiling glob v0.2.11
[INFO] [stderr]    Compiling rustc-serialize v0.3.24
[INFO] [stderr]    Compiling nodrop v0.1.14
[INFO] [stderr]    Compiling openssl v0.10.30
[INFO] [stderr]    Compiling adler v0.2.3
[INFO] [stderr]    Compiling linked-hash-map v0.5.3
[INFO] [stderr]    Compiling dtoa v0.4.6
[INFO] [stderr]    Compiling log-mdc v0.1.0
[INFO] [stderr]    Compiling arc-swap v0.3.11
[INFO] [stderr]    Compiling hex v0.3.2
[INFO] [stderr]    Compiling antidote v1.0.0
[INFO] [stderr]    Compiling num-traits v0.2.12
[INFO] [stderr]    Compiling num-integer v0.1.43
[INFO] [stderr]    Compiling miniz_oxide v0.4.1
[INFO] [stderr]    Compiling yaml-rust v0.4.4
[INFO] [stderr]    Compiling foreign-types v0.3.2
[INFO] [stderr]    Compiling arrayvec v0.3.25
[INFO] [stderr]    Compiling metadeps v1.1.2
[INFO] [stderr]    Compiling quote v1.0.7
[INFO] [stderr]    Compiling zmq-sys v0.11.0
[INFO] [stderr]    Compiling rust-crypto v0.2.36
[INFO] [stderr]    Compiling secp256k1 v0.7.1
[INFO] [stderr]    Compiling openssl-sys v0.9.58
[INFO] [stderr]    Compiling ordered-float v1.1.0
[INFO] [stderr]    Compiling getrandom v0.1.14
[INFO] [stderr]    Compiling rand v0.4.6
[INFO] [stderr]    Compiling time v0.1.44
[INFO] [stderr]    Compiling atty v0.2.14
[INFO] [stderr]    Compiling thread-id v3.3.0
[INFO] [stderr]    Compiling flate2 v1.0.17
[INFO] [stderr]    Compiling clap v2.33.3
[INFO] [stderr]    Compiling protobuf-codegen v2.17.0
[INFO] [stderr]    Compiling rand_core v0.5.1
[INFO] [stderr]    Compiling serde-value v0.5.3
[INFO] [stderr]    Compiling serde_yaml v0.8.13
[INFO] [stderr]    Compiling chrono v0.4.15
[INFO] [stderr]    Compiling rand v0.3.23
[INFO] [stderr]    Compiling ctrlc v3.1.6
[INFO] [stderr] error: could not compile `protobuf`
[INFO] [stderr] 
[INFO] [stderr] Caused by:
[INFO] [stderr]   process didn't exit successfully: `rustc --crate-name protobuf --edition=2018 /opt/rustwide/cargo-home/registry/src/github.com-1ecc6299db9ec823/protobuf-2.17.0/src/lib.rs --error-format=json --json=diagnostic-rendered-ansi,artifacts --crate-type lib --emit=dep-info,metadata,link -C embed-bitcode=no -C debuginfo=2 -C metadata=3635e961c06d2d40 -C extra-filename=-3635e961c06d2d40 --out-dir /opt/rustwide/target/debug/deps -L dependency=/opt/rustwide/target/debug/deps --cap-lints allow --cap-lints=warn` (signal: 9, SIGKILL: kill)
[INFO] [stderr] warning: build failed, waiting for other jobs to finish...
[INFO] [stderr] error: build failed
[INFO] running `Command { std: "docker" "inspect" "dc0e3619015a67481e961738a9399c96dda609574eb120a5b8c6a26cf03d9a31", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "dc0e3619015a67481e961738a9399c96dda609574eb120a5b8c6a26cf03d9a31", kill_on_drop: false }`
[INFO] [stdout] dc0e3619015a67481e961738a9399c96dda609574eb120a5b8c6a26cf03d9a31