[INFO] fetching crate niftygate-bindings 0.6.3...
[INFO] testing niftygate-bindings-0.6.3 against 1.55.0 for beta-1.56-1
[INFO] extracting crate niftygate-bindings 0.6.3 into /workspace/builds/worker-5/source
[INFO] validating manifest of crates.io crate niftygate-bindings 0.6.3 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 niftygate-bindings 0.6.3
[INFO] finished tweaking crates.io crate niftygate-bindings 0.6.3
[INFO] tweaked toml for crates.io crate niftygate-bindings 0.6.3 written to /workspace/builds/worker-5/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-5/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-5/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] e6fd2d6534ebeb17c31295df24362c7d0745b8165ec6df0352425b1337600a73
[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" "e6fd2d6534ebeb17c31295df24362c7d0745b8165ec6df0352425b1337600a73", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "e6fd2d6534ebeb17c31295df24362c7d0745b8165ec6df0352425b1337600a73", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "e6fd2d6534ebeb17c31295df24362c7d0745b8165ec6df0352425b1337600a73", kill_on_drop: false }`
[INFO] [stdout] e6fd2d6534ebeb17c31295df24362c7d0745b8165ec6df0352425b1337600a73
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-5/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-5/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] 3bf35ad6982deb08442422ebaa62c1d6b1250fb01c2117e586e8329751bdc6ac
[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" "3bf35ad6982deb08442422ebaa62c1d6b1250fb01c2117e586e8329751bdc6ac", kill_on_drop: false }`
[INFO] [stderr]    Compiling bytes v1.1.0
[INFO] [stderr]    Compiling arrayvec v0.7.1
[INFO] [stderr]    Compiling arrayvec v0.5.2
[INFO] [stderr]    Compiling secp256k1-sys v0.4.1
[INFO] [stderr]    Compiling bitvec v0.20.4
[INFO] [stderr]    Compiling tiny-keccak v2.0.2
[INFO] [stderr]    Compiling uint v0.9.1
[INFO] [stderr]    Compiling rand v0.8.4
[INFO] [stderr]    Compiling impl-serde v0.3.1
[INFO] [stderr]    Compiling proc-macro-crate v1.0.0
[INFO] [stderr]    Compiling futures-executor v0.3.17
[INFO] [stderr]    Compiling futures v0.3.17
[INFO] [stderr]    Compiling jsonrpc-core v18.0.0
[INFO] [stderr]    Compiling parity-scale-codec-derive v2.2.0
[INFO] [stderr]    Compiling rlp v0.5.1
[INFO] [stderr]    Compiling fixed-hash v0.7.0
[INFO] [stderr]    Compiling impl-rlp v0.3.0
[INFO] [stderr]    Compiling ethbloom v0.11.0
[INFO] [stderr]    Compiling secp256k1 v0.20.3
[INFO] [stderr]    Compiling parity-scale-codec v2.2.0
[INFO] [stderr]    Compiling impl-codec v0.5.1
[INFO] [stderr]    Compiling primitive-types v0.9.1
[INFO] [stderr]    Compiling ethereum-types v0.11.0
[INFO] [stderr]    Compiling ethabi v14.1.0
[INFO] [stderr]    Compiling web3 v0.17.0
[INFO] [stderr]    Compiling ethcontract-common v0.15.3
[INFO] [stderr]    Compiling ethcontract-generate v0.15.3
[INFO] [stderr]    Compiling ethcontract-derive v0.15.3
[INFO] [stderr]    Compiling ethcontract v0.15.3
[INFO] [stderr]    Compiling niftygate-bindings v0.6.3 (/opt/rustwide/workdir)
[INFO] [stderr] error: could not compile `niftygate-bindings`
[INFO] [stderr] 
[INFO] [stderr] Caused by:
[INFO] [stderr]   process didn't exit successfully: `rustc --crate-name niftygate_bindings --edition=2018 src/lib.rs --error-format=json --json=diagnostic-rendered-ansi --crate-type lib --emit=dep-info,metadata,link -C embed-bitcode=no -C debuginfo=2 -C metadata=cb2a1a88e26e6cab -C extra-filename=-cb2a1a88e26e6cab --out-dir /opt/rustwide/target/debug/deps -L dependency=/opt/rustwide/target/debug/deps --extern ethcontract=/opt/rustwide/target/debug/deps/libethcontract-b6afa0f6da120c32.rmeta --extern serde=/opt/rustwide/target/debug/deps/libserde-72ae3bc4a9480972.rmeta --cap-lints=warn -L native=/opt/rustwide/target/debug/build/secp256k1-sys-9a0f87c3773964a0/out` (signal: 9, SIGKILL: kill)
[INFO] running `Command { std: "docker" "inspect" "3bf35ad6982deb08442422ebaa62c1d6b1250fb01c2117e586e8329751bdc6ac", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "3bf35ad6982deb08442422ebaa62c1d6b1250fb01c2117e586e8329751bdc6ac", kill_on_drop: false }`
[INFO] [stdout] 3bf35ad6982deb08442422ebaa62c1d6b1250fb01c2117e586e8329751bdc6ac