[INFO] cloning repository https://github.com/PeggyJV/contract_monitor_rs
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/PeggyJV/contract_monitor_rs" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FPeggyJV%2Fcontract_monitor_rs", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FPeggyJV%2Fcontract_monitor_rs'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 5b99fb7ab83afb9a9093c52139715e43f90ae4e6
[INFO] testing PeggyJV/contract_monitor_rs against 1.55.0 for beta-1.56-1
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FPeggyJV%2Fcontract_monitor_rs" "/workspace/builds/worker-4/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-4/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/PeggyJV/contract_monitor_rs 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 git repo https://github.com/PeggyJV/contract_monitor_rs
[INFO] finished tweaking git repo https://github.com/PeggyJV/contract_monitor_rs
[INFO] tweaked toml for git repo https://github.com/PeggyJV/contract_monitor_rs written to /workspace/builds/worker-4/source/Cargo.toml
[INFO] crate git repo https://github.com/PeggyJV/contract_monitor_rs 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] 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] c8911c5cd585128f477518c66ace3d3300d063beb1f9cd8815a77b39cf36eb01
[INFO] running `Command { std: "docker" "start" "-a" "c8911c5cd585128f477518c66ace3d3300d063beb1f9cd8815a77b39cf36eb01", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "c8911c5cd585128f477518c66ace3d3300d063beb1f9cd8815a77b39cf36eb01", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "c8911c5cd585128f477518c66ace3d3300d063beb1f9cd8815a77b39cf36eb01", kill_on_drop: false }`
[INFO] [stdout] c8911c5cd585128f477518c66ace3d3300d063beb1f9cd8815a77b39cf36eb01
[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] 0af1c8d3f7f407fac17d52105b64112f147d7859789c48e1b0ad830169f4d896
[INFO] running `Command { std: "docker" "start" "-a" "0af1c8d3f7f407fac17d52105b64112f147d7859789c48e1b0ad830169f4d896", kill_on_drop: false }`
[INFO] [stderr]    Compiling syn v1.0.73
[INFO] [stderr]    Compiling libc v0.2.98
[INFO] [stderr]    Compiling serde v1.0.126
[INFO] [stderr]    Compiling once_cell v1.8.0
[INFO] [stderr]    Compiling pin-project-lite v0.2.7
[INFO] [stderr]    Compiling futures-core v0.3.16
[INFO] [stderr]    Compiling futures-sink v0.3.16
[INFO] [stderr]    Compiling futures-channel v0.3.16
[INFO] [stderr]    Compiling futures-task v0.3.16
[INFO] [stderr]    Compiling futures-io v0.3.16
[INFO] [stderr]    Compiling subtle v2.4.1
[INFO] [stderr]    Compiling hashbrown v0.11.2
[INFO] [stderr]    Compiling cpufeatures v0.1.5
[INFO] [stderr]    Compiling httparse v1.5.1
[INFO] [stderr]    Compiling base64 v0.13.0
[INFO] [stderr]    Compiling serde_json v1.0.64
[INFO] [stderr]    Compiling base64ct v1.0.0
[INFO] [stderr]    Compiling anyhow v1.0.42
[INFO] [stderr]    Compiling regex-syntax v0.6.25
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[INFO] [stderr]    Compiling async-trait v0.1.50
[INFO] [stderr]    Compiling openssl-probe v0.1.4
[INFO] [stderr]    Compiling const-oid v0.6.0
[INFO] [stderr]    Compiling hex v0.4.3
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[INFO] [stderr]    Compiling rustc-hex v2.1.0
[INFO] [stderr]    Compiling tap v1.0.1
[INFO] [stderr]    Compiling tower-layer v0.3.1
[INFO] [stderr]    Compiling wyz v0.2.0
[INFO] [stderr]    Compiling funty v1.1.0
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[INFO] [stderr]    Compiling const_fn v0.4.8
[INFO] [stderr]    Compiling local-waker v0.1.1
[INFO] [stderr]    Compiling byte-slice-cast v1.0.0
[INFO] [stderr]    Compiling tokio-openssl v0.6.2
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[INFO] [stderr]    Compiling strsim v0.10.0
[INFO] [stderr]    Compiling ipnet v2.3.1
[INFO] [stderr]    Compiling language-tags v0.3.2
[INFO] [stderr]    Compiling arrayvec v0.5.2
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[INFO] [stderr]    Compiling tokio v1.8.1
[INFO] [stderr]    Compiling futures-macro v0.3.16
[INFO] [stderr]    Compiling futures-util v0.3.16
[INFO] [stderr]    Compiling indexmap v1.7.0
[INFO] [stderr]    Compiling tracing-core v0.1.18
[INFO] [stderr]    Compiling num-integer v0.1.44
[INFO] [stderr]    Compiling num-bigint v0.4.0
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[INFO] [stderr]    Compiling crypto-mac v0.11.0
[INFO] [stderr]    Compiling cipher v0.3.0
[INFO] [stderr]    Compiling crypto-mac v0.8.0
[INFO] [stderr]    Compiling crypto-mac v0.10.0
[INFO] [stderr]    Compiling parking_lot v0.11.1
[INFO] [stderr]    Compiling rand_core v0.5.1
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[INFO] [stderr]    Compiling rand_chacha v0.3.1
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[INFO] [stderr]    Compiling pbkdf2 v0.7.5
[INFO] [stderr]    Compiling hmac v0.10.1
[INFO] [stderr]    Compiling matchers v0.0.1
[INFO] [stderr]    Compiling group v0.10.0
[INFO] [stderr]    Compiling rand_chacha v0.2.2
[INFO] [stderr]    Compiling base58check v0.1.0
[INFO] [stderr]    Compiling rand v0.8.4
[INFO] [stderr]    Compiling openssl-src v111.16.0+1.1.1l
[INFO] [stderr]    Compiling pbkdf2 v0.8.0
[INFO] [stderr]    Compiling bs58 v0.4.0
[INFO] [stderr]    Compiling Inflector v0.11.4
[INFO] [stderr]    Compiling env_logger v0.8.4
[INFO] [stderr]    Compiling rand v0.7.3
[INFO] [stderr]    Compiling scrypt v0.7.0
[INFO] [stderr]    Compiling openssl-sys v0.9.65
[INFO] [stderr]    Compiling ring v0.16.20
[INFO] [stderr]    Compiling backtrace v0.3.60
[INFO] [stderr]    Compiling zstd-sys v1.5.0+zstd.1.4.9
[INFO] [stderr]    Compiling secp256k1-sys v0.4.1
[INFO] [stderr]    Compiling fixed-hash v0.7.0
[INFO] [stderr]    Compiling num v0.2.1
[INFO] [stderr]    Compiling anomaly v0.2.0
[INFO] [stderr]    Compiling color-eyre v0.5.11
[INFO] [stderr]    Compiling synstructure v0.12.5
[INFO] [stderr]    Compiling darling_core v0.10.2
[INFO] [stderr]    Compiling proc-macro-error v1.0.4
[INFO] [stderr]    Compiling darling_core v0.13.0
[INFO] [stderr] error: could not compile `syn`
[INFO] [stderr] 
[INFO] [stderr] Caused by:
[INFO] [stderr]   process didn't exit successfully: `rustc --crate-name syn --edition=2018 /opt/rustwide/cargo-home/registry/src/github.com-1ecc6299db9ec823/syn-1.0.73/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 --cfg 'feature="clone-impls"' --cfg 'feature="default"' --cfg 'feature="derive"' --cfg 'feature="extra-traits"' --cfg 'feature="fold"' --cfg 'feature="full"' --cfg 'feature="parsing"' --cfg 'feature="printing"' --cfg 'feature="proc-macro"' --cfg 'feature="quote"' --cfg 'feature="visit"' --cfg 'feature="visit-mut"' -C metadata=e87c37e71e9e8657 -C extra-filename=-e87c37e71e9e8657 --out-dir /opt/rustwide/target/debug/deps -L dependency=/opt/rustwide/target/debug/deps --extern proc_macro2=/opt/rustwide/target/debug/deps/libproc_macro2-283fad16493adf62.rmeta --extern quote=/opt/rustwide/target/debug/deps/libquote-cf6158c23ff62a4c.rmeta --extern unicode_xid=/opt/rustwide/target/debug/deps/libunicode_xid-5ecee5fca1210f52.rmeta --cap-lints allow --cap-lints=warn --cfg syn_disable_nightly_tests` (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" "0af1c8d3f7f407fac17d52105b64112f147d7859789c48e1b0ad830169f4d896", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "0af1c8d3f7f407fac17d52105b64112f147d7859789c48e1b0ad830169f4d896", kill_on_drop: false }`
[INFO] [stdout] 0af1c8d3f7f407fac17d52105b64112f147d7859789c48e1b0ad830169f4d896