[INFO] cloning repository https://github.com/tomaka/substrate-tetris
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/tomaka/substrate-tetris" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Ftomaka%2Fsubstrate-tetris", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Ftomaka%2Fsubstrate-tetris'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] a399d6606309ef6d2d9e19236f4f85e082116e38
[INFO] documenting tomaka/substrate-tetris against 1.54.0 for beta-1.55-rustdoc-1
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Ftomaka%2Fsubstrate-tetris" "/workspace/builds/worker-14/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-14/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/tomaka/substrate-tetris on toolchain 1.54.0
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+1.54.0" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/tomaka/substrate-tetris
[INFO] finished tweaking git repo https://github.com/tomaka/substrate-tetris
[INFO] tweaked toml for git repo https://github.com/tomaka/substrate-tetris written to /workspace/builds/worker-14/source/Cargo.toml
[INFO] crate git repo https://github.com/tomaka/substrate-tetris already has a lockfile, it will not be regenerated
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+1.54.0" "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-14/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-14/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@sha256:34b6a614d2c27851fe6cbf88fbd1137609cefab8b10d0615aaeb6fd47975d74e" "/opt/rustwide/cargo-home/bin/cargo" "+1.54.0" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 6835b1cf4d1d9ea009df2c1aea9fb7a840139a0c1680b4684b1c88e7dd75afe6
[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" "6835b1cf4d1d9ea009df2c1aea9fb7a840139a0c1680b4684b1c88e7dd75afe6", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "6835b1cf4d1d9ea009df2c1aea9fb7a840139a0c1680b4684b1c88e7dd75afe6", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "6835b1cf4d1d9ea009df2c1aea9fb7a840139a0c1680b4684b1c88e7dd75afe6", kill_on_drop: false }`
[INFO] [stdout] 6835b1cf4d1d9ea009df2c1aea9fb7a840139a0c1680b4684b1c88e7dd75afe6
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-14/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-14/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" "RUSTDOCFLAGS=--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@sha256:34b6a614d2c27851fe6cbf88fbd1137609cefab8b10d0615aaeb6fd47975d74e" "/opt/rustwide/cargo-home/bin/cargo" "+1.54.0" "doc" "--frozen" "--no-deps" "--document-private-items" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] dce6687ed8d35330821829e11444a56fc920f932c4d7f0d29dfc400578074662
[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" "dce6687ed8d35330821829e11444a56fc920f932c4d7f0d29dfc400578074662", 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]     Blocking waiting for file lock on package cache
[INFO] [stderr]    Compiling arrayvec v0.4.11
[INFO] [stderr]    Compiling either v1.5.2
[INFO] [stderr]    Compiling log v0.4.7
[INFO] [stderr]     Checking opaque-debug v0.2.2
[INFO] [stderr]    Compiling subtle v2.1.0
[INFO] [stderr]     Checking bitvec v0.11.3
[INFO] [stderr]     Checking hash-db v0.14.0
[INFO] [stderr]     Checking static_assertions v0.2.5
[INFO] [stderr]    Compiling protobuf v2.7.0
[INFO] [stderr]     Checking bs58 v0.2.2
[INFO] [stderr]     Checking hashmap_core v0.1.10
[INFO] [stderr]     Checking environmental v1.0.1
[INFO] [stderr]     Checking integer-sqrt v0.1.2
[INFO] [stderr]    Compiling wasm-bindgen-shared v0.2.48
[INFO] [stderr]    Compiling constant_time_eq v0.1.3
[INFO] [stderr]    Compiling bumpalo v2.5.0
[INFO] [stderr]    Compiling utf8-ranges v1.0.3
[INFO] [stderr]    Compiling wasm-bindgen v0.2.48
[INFO] [stderr]     Checking futures-core-preview v0.3.0-alpha.17
[INFO] [stderr]     Checking nohash-hasher v0.1.1
[INFO] [stderr]     Checking static_slice v0.0.3
[INFO] [stderr]     Checking quick-error v0.1.4
[INFO] [stderr]     Checking futures-io-preview v0.3.0-alpha.17
[INFO] [stderr]    Compiling slog v2.5.1
[INFO] [stderr]     Checking ipnet v2.0.0
[INFO] [stderr]    Compiling proc-macro-hack-impl v0.4.1
[INFO] [stderr]     Checking strum v0.14.0
[INFO] [stderr]     Checking parity-bytes v0.1.0 (https://github.com/paritytech/parity-common?rev=b0317f649ab2c665b7987b8475878fc4d2e1f81d#b0317f64)
[INFO] [stderr]    Compiling rustc-demangle v0.1.15
[INFO] [stderr]    Compiling bindgen v0.47.3
[INFO] [stderr]    Compiling doc-comment v0.3.1
[INFO] [stderr]    Compiling sysinfo v0.9.0
[INFO] [stderr]    Compiling substrate-wasm-builder-runner v1.0.2
[INFO] [stderr]    Compiling crossbeam-utils v0.6.5
[INFO] [stderr]    Compiling rand v0.6.5
[INFO] [stderr]    Compiling num-integer v0.1.41
[INFO] [stderr]     Checking block-padding v0.1.4
[INFO] [stderr]    Compiling regex-syntax v0.6.8
[INFO] [stderr]     Checking trie-root v0.14.0
[INFO] [stderr]     Checking futures-sink-preview v0.3.0-alpha.17
[INFO] [stderr]    Compiling typenum v1.10.0
[INFO] [stderr]     Checking tokio-executor v0.1.8
[INFO] [stderr]     Checking rand v0.4.6
[INFO] [stderr]     Checking rand v0.5.6
[INFO] [stderr]     Checking get_if_addrs v0.5.3
[INFO] [stderr]     Checking atty v0.2.12
[INFO] [stderr]     Checking fs-swap v0.2.4
[INFO] [stderr]     Checking fdlimit v0.1.1
[INFO] [stderr]     Checking rpassword v3.0.2
[INFO] [stderr]    Compiling num_cpus v1.10.1
[INFO] [stderr]    Compiling time v0.1.42
[INFO] [stderr]     Checking parity-wasm v0.31.3
[INFO] [stderr]     Checking hashbrown v0.1.8
[INFO] [stderr]     Checking dns-parser v0.8.0
[INFO] [stderr]     Checking rand_chacha v0.1.1
[INFO] [stderr]    Compiling num-traits v0.2.8
[INFO] [stderr]    Compiling sr-std v2.0.0 (https://github.com/paritytech/substrate#f923ae2a)
[INFO] [stderr]    Compiling sr-io v2.0.0 (https://github.com/paritytech/substrate#f923ae2a)
[INFO] [stderr]    Compiling snow v0.5.2
[INFO] [stderr]    Compiling safe-mix v1.0.0
[INFO] [stderr]     Checking generic-array v0.12.3
[INFO] [stderr]     Checking generic-array v0.8.3
[INFO] [stderr]     Checking futures-channel-preview v0.3.0-alpha.17
[INFO] [stderr]     Checking bstr v0.2.1
[INFO] [stderr]    Compiling aho-corasick v0.7.4
[INFO] [stderr]     Checking uint v0.8.0
[INFO] [stderr]     Checking hash256-std-hasher v0.14.0
[INFO] [stderr]     Checking elastic-array v0.10.2
[INFO] [stderr]     Checking bigint v4.4.1
[INFO] [stderr]     Checking nix v0.14.1
[INFO] [stderr]    Compiling crossbeam-queue v0.1.2
[INFO] [stderr]     Checking bytes v0.4.12
[INFO] [stderr]    Compiling substrate-tetris-runtime v2.0.0 (/opt/rustwide/workdir/runtime)
[INFO] [stderr]     Checking clap v2.32.0
[INFO] [stderr]    Compiling proc-macro-hack v0.4.1
[INFO] [stderr]     Checking mio v0.6.19
[INFO] [stderr]     Checking want v0.2.0
[INFO] [stderr]     Checking tokio-timer v0.2.11
[INFO] [stderr]     Checking tokio-current-thread v0.1.6
[INFO] [stderr]     Checking regex v1.1.9
[INFO] [stderr]     Checking rand v0.3.23
[INFO] [stderr]     Checking parking_lot_core v0.2.14
[INFO] [stderr]     Checking digest v0.8.1
[INFO] [stderr]     Checking block-buffer v0.7.3
[INFO] [stderr]     Checking crypto-mac v0.7.0
[INFO] [stderr]     Checking block-cipher-trait v0.6.2
[INFO] [stderr]     Checking stream-cipher v0.3.0
[INFO] [stderr]     Checking digest v0.6.2
[INFO] [stderr]     Checking crypto-mac v0.4.0
[INFO] [stderr]     Checking block-buffer v0.2.0
[INFO] [stderr]     Checking futures-util-preview v0.3.0-alpha.17
[INFO] [stderr]     Checking fixed-hash v0.4.0
[INFO] [stderr]     Checking kvdb v0.1.0 (https://github.com/paritytech/parity-common?rev=b0317f649ab2c665b7987b8475878fc4d2e1f81d#b0317f64)
[INFO] [stderr]    Compiling asn1_der_derive v0.1.1
[INFO] [stderr]    Compiling proc-macro-hack v0.5.8
[INFO] [stderr]    Compiling wasm-bindgen-backend v0.2.48
[INFO] [stderr]    Compiling strum_macros v0.14.0
[INFO] [stderr]    Compiling libp2p-core-derive v0.10.0
[INFO] [stderr]    Compiling derive_more v0.14.1
[INFO] [stderr]    Compiling srml-support-procedural-tools-derive v2.0.0 (https://github.com/paritytech/substrate#f923ae2a)
[INFO] [stderr]    Compiling slog_derive v0.1.1
[INFO] [stderr]    Compiling structopt-derive v0.2.18
[INFO] [stderr]     Checking blake2-rfc v0.2.18
[INFO] [stderr]     Checking crossbeam-epoch v0.7.1
[INFO] [stderr] error: could not compile `regex-syntax`
[INFO] [stderr] 
[INFO] [stderr] Caused by:
[INFO] [stderr]   process didn't exit successfully: `rustc --crate-name regex_syntax /opt/rustwide/cargo-home/registry/src/github.com-1ecc6299db9ec823/regex-syntax-0.6.8/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=b0fbb875d09eecd1 -C extra-filename=-b0fbb875d09eecd1 --out-dir /opt/rustwide/target/debug/deps -L dependency=/opt/rustwide/target/debug/deps --extern ucd_util=/opt/rustwide/target/debug/deps/libucd_util-ee0f14a2fe919c8a.rmeta --cap-lints allow` (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" "dce6687ed8d35330821829e11444a56fc920f932c4d7f0d29dfc400578074662", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "dce6687ed8d35330821829e11444a56fc920f932c4d7f0d29dfc400578074662", kill_on_drop: false }`
[INFO] [stdout] dce6687ed8d35330821829e11444a56fc920f932c4d7f0d29dfc400578074662
