[INFO] fetching crate niftygate 0.6.3...
[INFO] testing niftygate-0.6.3 against 1.55.0 for beta-1.56-1
[INFO] extracting crate niftygate 0.6.3 into /workspace/builds/worker-1/source
[INFO] validating manifest of crates.io crate niftygate 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 0.6.3
[INFO] finished tweaking crates.io crate niftygate 0.6.3
[INFO] tweaked toml for crates.io crate niftygate 0.6.3 written to /workspace/builds/worker-1/source/Cargo.toml
[INFO] crate crates.io crate niftygate 0.6.3 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-1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-1/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] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] [stdout] 21e88a4ae17da16c098f18db0647a5e71a498d8d6ed616e5af1c76bb9ded0eac
[INFO] running `Command { std: "docker" "start" "-a" "21e88a4ae17da16c098f18db0647a5e71a498d8d6ed616e5af1c76bb9ded0eac", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "21e88a4ae17da16c098f18db0647a5e71a498d8d6ed616e5af1c76bb9ded0eac", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "21e88a4ae17da16c098f18db0647a5e71a498d8d6ed616e5af1c76bb9ded0eac", kill_on_drop: false }`
[INFO] [stdout] 21e88a4ae17da16c098f18db0647a5e71a498d8d6ed616e5af1c76bb9ded0eac
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-1/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] 30bd993671c12f5adee994c95e7cc38be845077b291b6020287b6e36ea0529cb
[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" "30bd993671c12f5adee994c95e7cc38be845077b291b6020287b6e36ea0529cb", kill_on_drop: false }`
[INFO] [stderr]    Compiling syn v1.0.75
[INFO] [stderr]    Compiling serde v1.0.130
[INFO] [stderr]    Compiling log v0.4.14
[INFO] [stderr]    Compiling sval v1.0.0-alpha.5
[INFO] [stderr]    Compiling futures-core v0.3.17
[INFO] [stderr]    Compiling futures-io v0.3.17
[INFO] [stderr]    Compiling futures-channel v0.3.17
[INFO] [stderr]    Compiling wasm-bindgen-shared v0.2.76
[INFO] [stderr]    Compiling futures-task v0.3.17
[INFO] [stderr]    Compiling base64 v0.13.0
[INFO] [stderr]    Compiling wasm-bindgen v0.2.76
[INFO] [stderr]    Compiling bytes v1.1.0
[INFO] [stderr]    Compiling arrayvec v0.7.1
[INFO] [stderr]    Compiling zeroize v1.4.1
[INFO] [stderr]    Compiling value-bag v1.0.0-alpha.7
[INFO] [stderr]    Compiling futures-util v0.3.17
[INFO] [stderr]    Compiling tokio v1.11.0
[INFO] [stderr]    Compiling simple-mutex v1.1.5
[INFO] [stderr]    Compiling getrandom v0.2.3
[INFO] [stderr]    Compiling lexical-core v0.7.6
[INFO] [stderr]    Compiling tiny-keccak v2.0.2
[INFO] [stderr]    Compiling uint v0.9.1
[INFO] [stderr]    Compiling block-buffer v0.9.0
[INFO] [stderr]    Compiling secp256k1 v0.20.3
[INFO] [stderr]    Compiling byte-pool v0.2.3
[INFO] [stderr]    Compiling hmac v0.8.1
[INFO] [stderr]    Compiling blake3 v0.3.8
[INFO] [stderr]    Compiling console v0.14.1
[INFO] [stderr]    Compiling async-dup v1.2.2
[INFO] [stderr]    Compiling rand_core v0.6.3
[INFO] [stderr]    Compiling curl v0.4.38
[INFO] [stderr]    Compiling rlp v0.5.1
[INFO] [stderr]    Compiling sha2 v0.9.6
[INFO] [stderr]    Compiling sha3 v0.9.1
[INFO] [stderr]    Compiling sha-1 v0.9.8
[INFO] [stderr]    Compiling futures-lite v1.12.0
[INFO] [stderr]    Compiling async-channel v1.6.1
[INFO] [stderr]    Compiling rand_chacha v0.3.1
[INFO] [stderr]    Compiling impl-rlp v0.3.0
[INFO] [stderr]    Compiling nom v5.1.2
[INFO] [stderr]    Compiling rand v0.8.4
[INFO] [stderr]    Compiling async-executor v1.4.1
[INFO] [stderr]    Compiling blocking v1.0.2
[INFO] [stderr]    Compiling fixed-hash v0.7.0
[INFO] [stderr]    Compiling tempfile v3.2.0
[INFO] [stderr]    Compiling dialoguer v0.8.0
[INFO] [stderr]    Compiling proc-macro-error v1.0.4
[INFO] [stderr]    Compiling serde_derive v1.0.130
[INFO] [stderr]    Compiling ctor v0.1.21
[INFO] [stderr]    Compiling thiserror-impl v1.0.28
[INFO] [stderr]    Compiling futures-macro v0.3.17
[INFO] [stderr]    Compiling async-attributes v1.1.2
[INFO] [stderr]    Compiling pin-project-internal v1.0.8
[INFO] [stderr]    Compiling impl-trait-for-tuples v0.2.1
[INFO] [stderr]    Compiling time-macros-impl v0.1.2
[INFO] [stderr]    Compiling derive_more v0.99.16
[INFO] [stderr]    Compiling async-trait v0.1.51
[INFO] [stderr]    Compiling structopt-derive v0.4.16
[INFO] [stderr]    Compiling strum_macros v0.21.1
[INFO] [stderr]    Compiling time-macros v0.1.1
[INFO] [stderr]    Compiling time v0.2.27
[INFO] [stderr]    Compiling thiserror v1.0.28
[INFO] [stderr]    Compiling cookie v0.14.4
[INFO] [stderr]    Compiling structopt v0.3.23
[INFO] [stderr]    Compiling polling v2.1.0
[INFO] [stderr]    Compiling wasm-bindgen-backend v0.2.76
[INFO] [stderr]    Compiling kv-log-macro v1.0.7
[INFO] [stderr]    Compiling rustls v0.18.1
[INFO] [stderr]    Compiling async-io v1.6.0
[INFO] [stderr]    Compiling strum v0.21.0
[INFO] [stderr]    Compiling pin-project v1.0.8
[INFO] [stderr]    Compiling wasm-bindgen-macro-support v0.2.76
[INFO] [stderr]    Compiling async-global-executor v2.0.2
[INFO] [stderr]    Compiling async-process v1.2.0
[INFO] [stderr]    Compiling async-std v1.10.0
[INFO] [stderr]    Compiling futures-executor v0.3.17
[INFO] [stderr]    Compiling wasm-bindgen-macro v0.2.76
[INFO] [stderr]    Compiling futures v0.3.17
[INFO] [stderr]    Compiling soketto v0.5.0
[INFO] [stderr]    Compiling async-tls v0.10.0
[INFO] [stderr]    Compiling serde_json v1.0.67
[INFO] [stderr]    Compiling toml v0.5.8
[INFO] [stderr]    Compiling url v2.2.2
[INFO] [stderr]    Compiling impl-serde v0.3.1
[INFO] [stderr]    Compiling serde_qs v0.8.4
[INFO] [stderr]    Compiling serde_urlencoded v0.7.0
[INFO] [stderr]    Compiling config v0.10.1
[INFO] [stderr]    Compiling bincode v1.3.3
[INFO] [stderr]    Compiling chrono v0.4.19
[INFO] [stderr]    Compiling ethbloom v0.11.0
[INFO] [stderr]    Compiling deadpool v0.7.0
[INFO] [stderr]    Compiling jsonrpc-core v18.0.0
[INFO] [stderr]    Compiling http-types v2.12.0
[INFO] [stderr]    Compiling async-session v2.0.1
[INFO] [stderr]    Compiling femme v2.1.1
[INFO] [stderr]    Compiling proc-macro-crate v1.0.0
[INFO] [stderr]    Compiling js-sys v0.3.53
[INFO] [stderr]    Compiling parity-scale-codec-derive v2.2.0
[INFO] [stderr]    Compiling async-h1 v2.3.2
[INFO] [stderr]    Compiling async-sse v4.1.0
[INFO] [stderr]    Compiling http-client v6.5.1
[INFO] [stderr]    Compiling parity-scale-codec v2.2.0
[INFO] [stderr]    Compiling web-sys v0.3.53
[INFO] [stderr]    Compiling wasm-bindgen-futures v0.4.26
[INFO] [stderr]    Compiling tide v0.16.0
[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 gloo-timers v0.2.1
[INFO] [stderr]    Compiling surf v2.3.1
[INFO] [stderr]    Compiling ethabi v14.1.0
[INFO] [stderr]    Compiling futures-timer v3.0.2
[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
[INFO] [stderr]    Compiling niftygate 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 /opt/rustwide/cargo-home/registry/src/github.com-1ecc6299db9ec823/niftygate-bindings-0.6.3/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=008c4d25baa95d3c -C extra-filename=-008c4d25baa95d3c --out-dir /opt/rustwide/target/debug/deps -L dependency=/opt/rustwide/target/debug/deps --extern ethcontract=/opt/rustwide/target/debug/deps/libethcontract-601f3d918749a0a4.rmeta --extern serde=/opt/rustwide/target/debug/deps/libserde-5a71934b9331be64.rmeta --cap-lints allow --cap-lints=warn -L native=/opt/rustwide/target/debug/build/secp256k1-sys-9a0f87c3773964a0/out` (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" "30bd993671c12f5adee994c95e7cc38be845077b291b6020287b6e36ea0529cb", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "30bd993671c12f5adee994c95e7cc38be845077b291b6020287b6e36ea0529cb", kill_on_drop: false }`
[INFO] [stdout] 30bd993671c12f5adee994c95e7cc38be845077b291b6020287b6e36ea0529cb