[INFO] cloning repository https://github.com/PEshwar/rust_blockchain
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/PEshwar/rust_blockchain" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FPEshwar%2Frust_blockchain", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FPEshwar%2Frust_blockchain'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 7f75bb377d4e013a85e312714cc457ff36097e5b
[INFO] testing PEshwar/rust_blockchain against 1.55.0 for beta-1.56-1
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FPEshwar%2Frust_blockchain" "/workspace/builds/worker-0/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-0/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/PEshwar/rust_blockchain 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/PEshwar/rust_blockchain
[INFO] finished tweaking git repo https://github.com/PEshwar/rust_blockchain
[INFO] tweaked toml for git repo https://github.com/PEshwar/rust_blockchain written to /workspace/builds/worker-0/source/Cargo.toml
[INFO] crate git repo https://github.com/PEshwar/rust_blockchain 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]  Downloading crates ...
[INFO] [stderr]   Downloaded wasm-bindgen-macro-support v0.2.49
[INFO] [stderr]   Downloaded wasm-bindgen-shared v0.2.49
[INFO] [stderr]   Downloaded soketto v0.2.2
[INFO] [stderr]   Downloaded wasm-bindgen-webidl v0.2.49
[INFO] [stderr]   Downloaded wasm-bindgen-backend v0.2.49
[INFO] [stderr]   Downloaded wasm-timer v0.1.2
[INFO] [stderr]   Downloaded js-sys v0.3.26
[INFO] [stderr]   Downloaded syn v1.0.1
[INFO] [stderr]   Downloaded ipnet v2.0.0
[INFO] [stderr]   Downloaded wasm-bindgen-macro v0.2.49
[INFO] [stderr]   Downloaded wasm-bindgen-futures v0.3.26
[INFO] [stderr]   Downloaded wasm-bindgen v0.2.49
[INFO] [stderr]   Downloaded proc-macro2 v1.0.0
[INFO] [stderr]   Downloaded tokio-stdin-stdout v0.1.5
[INFO] [stderr]   Downloaded web-sys v0.3.26
[INFO] [stderr]   Downloaded quote v1.0.0
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-0/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-0/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] 451c81aa95839aeec485973da73e1303e73874bc20a79ec39cb59ff31912beb2
[INFO] running `Command { std: "docker" "start" "-a" "451c81aa95839aeec485973da73e1303e73874bc20a79ec39cb59ff31912beb2", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "451c81aa95839aeec485973da73e1303e73874bc20a79ec39cb59ff31912beb2", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "451c81aa95839aeec485973da73e1303e73874bc20a79ec39cb59ff31912beb2", kill_on_drop: false }`
[INFO] [stdout] 451c81aa95839aeec485973da73e1303e73874bc20a79ec39cb59ff31912beb2
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-0/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-0/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] 14b6124627582deaad61ed41083047e5559ddb250e1f484abdcd5d159f7ffab4
[INFO] running `Command { std: "docker" "start" "-a" "14b6124627582deaad61ed41083047e5559ddb250e1f484abdcd5d159f7ffab4", kill_on_drop: false }`
[INFO] [stderr]    Compiling libc v0.2.62
[INFO] [stderr]    Compiling byteorder v1.3.2
[INFO] [stderr]    Compiling autocfg v0.1.5
[INFO] [stderr]    Compiling cc v1.0.40
[INFO] [stderr]    Compiling typenum v1.10.0
[INFO] [stderr]    Compiling futures v0.1.28
[INFO] [stderr]    Compiling fake-simd v0.1.2
[INFO] [stderr]    Compiling spin v0.5.1
[INFO] [stderr]    Compiling subtle v2.1.1
[INFO] [stderr]    Compiling constant_time_eq v0.1.3
[INFO] [stderr]    Compiling serde v1.0.98
[INFO] [stderr]    Compiling byte-tools v0.2.0
[INFO] [stderr]    Compiling arrayref v0.3.5
[INFO] [stderr]    Compiling protobuf v2.8.0
[INFO] [stderr]    Compiling bs58 v0.2.2
[INFO] [stderr]    Compiling pkg-config v0.3.15
[INFO] [stderr]    Compiling proc-macro2 v1.0.0
[INFO] [stderr]    Compiling arrayvec v0.4.11
[INFO] [stderr]    Compiling syn v1.0.1
[INFO] [stderr]    Compiling wasm-bindgen-shared v0.2.49
[INFO] [stderr]    Compiling bumpalo v2.5.0
[INFO] [stderr]    Compiling wasm-bindgen v0.2.49
[INFO] [stderr]    Compiling crunchy v0.2.2
[INFO] [stderr]    Compiling c_linked_list v1.1.1
[INFO] [stderr]    Compiling static_slice v0.0.3
[INFO] [stderr]    Compiling rustc-hex v2.0.1
[INFO] [stderr]    Compiling openssl v0.10.24
[INFO] [stderr]    Compiling quick-error v0.1.4
[INFO] [stderr]    Compiling nohash-hasher v0.1.1
[INFO] [stderr]    Compiling ipnet v2.0.0
[INFO] [stderr]    Compiling either v1.5.2
[INFO] [stderr]    Compiling parity-send-wrapper v0.1.0
[INFO] [stderr]    Compiling crossbeam-utils v0.6.6
[INFO] [stderr]    Compiling block-padding v0.1.4
[INFO] [stderr]    Compiling log v0.4.8
[INFO] [stderr]    Compiling rand_isaac v0.1.1
[INFO] [stderr]    Compiling rand_hc v0.1.0
[INFO] [stderr]    Compiling rand_xorshift v0.1.1
[INFO] [stderr]    Compiling crc32fast v1.2.0
[INFO] [stderr]    Compiling snow v0.5.2
[INFO] [stderr]    Compiling synstructure v0.10.2
[INFO] [stderr]    Compiling asn1_der_derive v0.1.1
[INFO] [stderr]    Compiling libp2p-core-derive v0.12.0 (https://github.com/libp2p/rust-libp2p#c722963c)
[INFO] [stderr]    Compiling serde_derive v1.0.98
[INFO] [stderr]    Compiling crossbeam-queue v0.1.2
[INFO] [stderr]    Compiling rand_pcg v0.1.2
[INFO] [stderr]    Compiling rand_chacha v0.1.1
[INFO] [stderr]    Compiling rand v0.6.5
[INFO] [stderr]    Compiling num-traits v0.2.8
[INFO] [stderr]    Compiling num-integer v0.1.41
[INFO] [stderr]    Compiling quote v1.0.0
[INFO] [stderr]    Compiling crossbeam-epoch v0.7.2
[INFO] [stderr]    Compiling iovec v0.1.2
[INFO] [stderr]    Compiling rand_os v0.1.3
[INFO] [stderr]    Compiling rand v0.4.6
[INFO] [stderr]    Compiling num_cpus v1.10.1
[INFO] [stderr]    Compiling net2 v0.2.33
[INFO] [stderr]    Compiling rand v0.5.6
[INFO] [stderr]    Compiling get_if_addrs v0.5.3
[INFO] [stderr]    Compiling time v0.1.42
[INFO] [stderr]    Compiling tokio-executor v0.1.8
[INFO] [stderr]    Compiling tokio-sync v0.1.6
[INFO] [stderr]    Compiling ring v0.14.6
[INFO] [stderr]    Compiling clear_on_drop v0.2.3
[INFO] [stderr]    Compiling backtrace-sys v0.1.31
[INFO] [stderr]    Compiling libz-sys v1.0.25
[INFO] [stderr]    Compiling miniz-sys v0.1.12
[INFO] [stderr]    Compiling openssl-sys v0.9.49
[INFO] [stderr]    Compiling generic-array v0.12.3
[INFO] [stderr]    Compiling generic-array v0.8.3
[INFO] [stderr]    Compiling futures-cpupool v0.1.8
[INFO] [stderr]    Compiling bytes v0.4.12
[INFO] [stderr]    Compiling base64 v0.10.1
[INFO] [stderr]    Compiling dns-parser v0.8.0
[INFO] [stderr]    Compiling uint v0.8.1
[INFO] [stderr]    Compiling asn1_der v0.6.2
[INFO] [stderr]    Compiling tokio-timer v0.2.11
[INFO] [stderr]    Compiling tokio-current-thread v0.1.6
[INFO] [stderr]    Compiling crossbeam-deque v0.7.1
[INFO] [stderr]    Compiling mio v0.6.19
[INFO] [stderr]    Compiling failure_derive v0.1.5
[INFO] [stderr]    Compiling zeroize_derive v0.9.3
[INFO] [stderr]    Compiling digest v0.6.2
[INFO] [stderr]    Compiling crypto-mac v0.4.0
[INFO] [stderr]    Compiling block-buffer v0.2.0
[INFO] [stderr]    Compiling digest v0.8.1
[INFO] [stderr]    Compiling block-buffer v0.7.3
[INFO] [stderr]    Compiling crypto-mac v0.7.0
[INFO] [stderr]    Compiling block-cipher-trait v0.6.2
[INFO] [stderr]    Compiling stream-cipher v0.3.0
[INFO] [stderr]    Compiling parking_lot_core v0.2.14
[INFO] [stderr]    Compiling rand v0.3.23
[INFO] [stderr]    Compiling tokio-io v0.1.12
[INFO] [stderr]    Compiling http v0.1.18
[INFO] [stderr]    Compiling sha2 v0.6.0
[INFO] [stderr]    Compiling wasm-timer v0.1.2
[INFO] [stderr]    Compiling ctr v0.3.2
[INFO] [stderr]    Compiling aes-soft v0.3.3
[INFO] [stderr]    Compiling twofish v0.2.0
[INFO] [stderr]    Compiling parking_lot_core v0.3.1
[INFO] [stderr]    Compiling hmac v0.4.2
[INFO] [stderr]    Compiling cuckoofilter v0.3.2
[INFO] [stderr]    Compiling sha2 v0.8.0
[INFO] [stderr]    Compiling sha-1 v0.8.1
[INFO] [stderr]    Compiling blake2 v0.8.0
[INFO] [stderr]    Compiling sha3 v0.8.2
[INFO] [stderr]    Compiling hmac v0.7.1
[INFO] [stderr]    Compiling mio-uds v0.6.7
[INFO] [stderr]    Compiling parking_lot v0.5.5
[INFO] [stderr]    Compiling curve25519-dalek v1.2.3
[INFO] [stderr]    Compiling hmac-drbg v0.1.2
[INFO] [stderr]    Compiling tokio-codec v0.1.1
[INFO] [stderr]    Compiling rw-stream-sink v0.1.2 (https://github.com/libp2p/rust-libp2p#c722963c)
[INFO] [stderr]    Compiling tokio-stdin-stdout v0.1.5
[INFO] [stderr]    Compiling flate2 v1.0.11
[INFO] [stderr] error: could not compile `serde_derive`
[INFO] [stderr] 
[INFO] [stderr] Caused by:
[INFO] [stderr]   process didn't exit successfully: `rustc --crate-name serde_derive /opt/rustwide/cargo-home/registry/src/github.com-1ecc6299db9ec823/serde_derive-1.0.98/src/lib.rs --error-format=json --json=diagnostic-rendered-ansi --crate-type proc-macro --emit=dep-info,link -C prefer-dynamic -C embed-bitcode=no -C debuginfo=2 --cfg 'feature="default"' -C metadata=4119ad6a52d3051e -C extra-filename=-4119ad6a52d3051e --out-dir /opt/rustwide/target/debug/deps -L dependency=/opt/rustwide/target/debug/deps --extern proc_macro2=/opt/rustwide/target/debug/deps/libproc_macro2-2341dfc7d52c4d0a.rlib --extern quote=/opt/rustwide/target/debug/deps/libquote-b512be6a3f8c1d97.rlib --extern syn=/opt/rustwide/target/debug/deps/libsyn-197d6717486cd0e3.rlib --extern proc_macro --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" "14b6124627582deaad61ed41083047e5559ddb250e1f484abdcd5d159f7ffab4", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "14b6124627582deaad61ed41083047e5559ddb250e1f484abdcd5d159f7ffab4", kill_on_drop: false }`
[INFO] [stdout] 14b6124627582deaad61ed41083047e5559ddb250e1f484abdcd5d159f7ffab4