[INFO] cloning repository https://github.com/paritytech/polkadot
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/paritytech/polkadot" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fparitytech%2Fpolkadot", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fparitytech%2Fpolkadot'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 5dac532349e7629032c52deb67b2ee81c77ce8a1
[INFO] checking paritytech/polkadot against try#ddfd70ee3c3748e597b32f416b0d15a4f6e37685 for pr-87050
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fparitytech%2Fpolkadot" "/workspace/builds/worker-13/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-13/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/paritytech/polkadot on toolchain ddfd70ee3c3748e597b32f416b0d15a4f6e37685
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+ddfd70ee3c3748e597b32f416b0d15a4f6e37685" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/paritytech/polkadot
[INFO] finished tweaking git repo https://github.com/paritytech/polkadot
[INFO] tweaked toml for git repo https://github.com/paritytech/polkadot written to /workspace/builds/worker-13/source/Cargo.toml
[INFO] crate git repo https://github.com/paritytech/polkadot already has a lockfile, it will not be regenerated
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+ddfd70ee3c3748e597b32f416b0d15a4f6e37685" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]     Updating git repository `https://github.com/paritytech/grandpa-bridge-gadget`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded bae v0.1.6
[INFO] [stderr]   Downloaded minicbor-derive v0.6.2
[INFO] [stderr]   Downloaded handlebars v3.5.1
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[INFO] [stderr]   Downloaded parity-util-mem v0.10.0
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[INFO] [stderr]   Downloaded primitive-types v0.10.1
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-13/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-13/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" "+ddfd70ee3c3748e597b32f416b0d15a4f6e37685" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] c38986b778ae84a06377761c40c859a3611c479c89a21d5fbb72d4dfab4b59c6
[INFO] running `Command { std: "docker" "start" "-a" "c38986b778ae84a06377761c40c859a3611c479c89a21d5fbb72d4dfab4b59c6", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "c38986b778ae84a06377761c40c859a3611c479c89a21d5fbb72d4dfab4b59c6", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "c38986b778ae84a06377761c40c859a3611c479c89a21d5fbb72d4dfab4b59c6", kill_on_drop: false }`
[INFO] [stdout] c38986b778ae84a06377761c40c859a3611c479c89a21d5fbb72d4dfab4b59c6
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-13/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-13/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=forbid" "-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" "+ddfd70ee3c3748e597b32f416b0d15a4f6e37685" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 7b3dbe411a636d887eebdd99da46f9183af447fcd9973428182befde2b680858
[INFO] running `Command { std: "docker" "start" "-a" "7b3dbe411a636d887eebdd99da46f9183af447fcd9973428182befde2b680858", 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]    Compiling proc-macro2 v1.0.27
[INFO] [stderr]    Compiling syn v1.0.67
[INFO] [stderr]    Compiling libc v0.2.98
[INFO] [stderr]    Compiling serde_derive v1.0.126
[INFO] [stderr]    Compiling serde v1.0.126
[INFO] [stderr]    Compiling value-bag v1.0.0-alpha.6
[INFO] [stderr]     Checking cfg-if v1.0.0
[INFO] [stderr]    Compiling log v0.4.14
[INFO] [stderr]    Compiling getrandom v0.2.1
[INFO] [stderr]     Checking scopeguard v1.1.0
[INFO] [stderr]     Checking smallvec v1.6.1
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[INFO] [stderr]     Checking instant v0.1.6
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[INFO] [stderr]    Compiling futures-task v0.3.15
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[INFO] [stderr]     Checking rustc-hash v1.1.0
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[INFO] [stderr]    Compiling regex-syntax v0.6.21
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[INFO] [stderr]    Compiling pin-project-internal v0.4.23
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[INFO] [stderr]    Compiling pkg-config v0.3.17
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[INFO] [stderr]     Checking uint v0.9.0
[INFO] [stderr]     Checking regex-automata v0.1.9
[INFO] [stderr]     Checking dns-parser v0.8.0
[INFO] [stderr]    Compiling digest v0.9.0
[INFO] [stderr]     Checking block-buffer v0.9.0
[INFO] [stderr]     Checking crypto-mac v0.8.0
[INFO] [stderr]     Checking universal-hash v0.4.0
[INFO] [stderr]     Checking block-cipher v0.7.1
[INFO] [stderr]     Checking stream-cipher v0.4.1
[INFO] [stderr]     Checking aead v0.3.2
[INFO] [stderr]     Checking cipher v0.2.5
[INFO] [stderr]     Checking memory-lru v0.1.0
[INFO] [stderr]    Compiling blake2-rfc v0.2.18
[INFO] [stderr]    Compiling substrate-build-script-utils v3.0.0 (https://github.com/paritytech/substrate?branch=master#0ae6aac3)
[INFO] [stderr]     Checking pbkdf2 v0.3.0
[INFO] [stderr]     Checking crossbeam-queue v0.2.3
[INFO] [stderr]     Checking tokio-executor v0.1.10
[INFO] [stderr]     Checking sha2 v0.8.2
[INFO] [stderr]     Checking sha-1 v0.8.2
[INFO] [stderr]    Compiling snow v0.7.1
[INFO] [stderr]    Compiling parking_lot_core v0.6.2
[INFO] [stderr]    Compiling parking_lot v0.9.0
[INFO] [stderr]    Compiling hyper v0.12.35
[INFO] [stderr]    Compiling jobserver v0.1.21
[INFO] [stderr]    Compiling parking_lot_core v0.8.0
[INFO] [stderr]    Compiling atty v0.2.14
[INFO] [stderr]    Compiling libsecp256k1-core v0.2.2
[INFO] [stderr]     Checking num_cpus v1.13.0
[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-0.6.21/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="default"' --cfg 'feature="unicode"' --cfg 'feature="unicode-age"' --cfg 'feature="unicode-bool"' --cfg 'feature="unicode-case"' --cfg 'feature="unicode-gencat"' --cfg 'feature="unicode-perl"' --cfg 'feature="unicode-script"' --cfg 'feature="unicode-segment"' -C metadata=5476c750da7ba7f3 -C extra-filename=-5476c750da7ba7f3 --out-dir /opt/rustwide/target/debug/deps -L dependency=/opt/rustwide/target/debug/deps --cap-lints allow --cap-lints=forbid` (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" "7b3dbe411a636d887eebdd99da46f9183af447fcd9973428182befde2b680858", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "7b3dbe411a636d887eebdd99da46f9183af447fcd9973428182befde2b680858", kill_on_drop: false }`
[INFO] [stdout] 7b3dbe411a636d887eebdd99da46f9183af447fcd9973428182befde2b680858