[INFO] cloning repository https://github.com/iExecBlockchainComputing/iexec-substrate-poc
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/iExecBlockchainComputing/iexec-substrate-poc" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FiExecBlockchainComputing%2Fiexec-substrate-poc", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FiExecBlockchainComputing%2Fiexec-substrate-poc'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 76e56255aa4ec91349e4ac1d5dac04232c2f0338
[INFO] checking iExecBlockchainComputing/iexec-substrate-poc against try#07fecb9cf34c4979a772ba38c99d6d9144768413 for pr-87710
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FiExecBlockchainComputing%2Fiexec-substrate-poc" "/workspace/builds/worker-48/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-48/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/iExecBlockchainComputing/iexec-substrate-poc on toolchain 07fecb9cf34c4979a772ba38c99d6d9144768413
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+07fecb9cf34c4979a772ba38c99d6d9144768413" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/iExecBlockchainComputing/iexec-substrate-poc
[INFO] finished tweaking git repo https://github.com/iExecBlockchainComputing/iexec-substrate-poc
[INFO] tweaked toml for git repo https://github.com/iExecBlockchainComputing/iexec-substrate-poc written to /workspace/builds/worker-48/source/Cargo.toml
[INFO] crate git repo https://github.com/iExecBlockchainComputing/iexec-substrate-poc already has a lockfile, it will not be regenerated
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+07fecb9cf34c4979a772ba38c99d6d9144768413" "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] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded paste-impl v0.1.4
[INFO] [stderr]   Downloaded paste v0.1.4
[INFO] [stderr]   Downloaded fixed-hash v0.3.0
[INFO] [stderr]   Downloaded multistream-select v0.3.0
[INFO] [stderr]   Downloaded rw-stream-sink v0.1.0
[INFO] [stderr]   Downloaded ctr v0.3.0
[INFO] [stderr]   Downloaded make-cmd v0.1.0
[INFO] [stderr]   Downloaded parity-crypto v0.3.0
[INFO] [stderr]   Downloaded bindgen v0.43.2
[INFO] [stderr]   Downloaded pwasm-utils v0.6.2
[INFO] [stderr]   Downloaded exit-future v0.1.3
[INFO] [stderr]   Downloaded cexpr v0.3.4
[INFO] [stderr]   Downloaded primitive-types v0.2.1
[INFO] [stderr]   Downloaded parity-multihash v0.1.0
[INFO] [stderr]   Downloaded trie-root v0.11.0
[INFO] [stderr]   Downloaded wasmi v0.4.3
[INFO] [stderr]   Downloaded environmental v1.0.0
[INFO] [stderr]   Downloaded proc-macro-crate v0.1.3
[INFO] [stderr]   Downloaded parity-codec-derive v3.0.0
[INFO] [stderr]   Downloaded libp2p-dns v0.3.0
[INFO] [stderr]   Downloaded libp2p-mdns v0.3.0
[INFO] [stderr]   Downloaded libp2p-yamux v0.3.0
[INFO] [stderr]   Downloaded libp2p-ratelimit v0.3.0
[INFO] [stderr]   Downloaded memory-db v0.11.0
[INFO] [stderr]   Downloaded libp2p-noise v0.1.0
[INFO] [stderr]   Downloaded libp2p-tcp v0.3.0
[INFO] [stderr]   Downloaded parity-codec v3.0.0
[INFO] [stderr]   Downloaded merlin v1.0.3
[INFO] [stderr]   Downloaded libp2p-uds v0.3.0
[INFO] [stderr]   Downloaded libp2p-core-derive v0.3.2
[INFO] [stderr]   Downloaded libp2p-mplex v0.3.0
[INFO] [stderr]   Downloaded libp2p-identify v0.3.1
[INFO] [stderr]   Downloaded hex-literal v0.1.2
[INFO] [stderr]   Downloaded libp2p-floodsub v0.3.0
[INFO] [stderr]   Downloaded libp2p-websocket v0.3.0
[INFO] [stderr]   Downloaded yamux v0.1.6
[INFO] [stderr]   Downloaded hash256-std-hasher v0.11.0
[INFO] [stderr]   Downloaded schnorrkel v0.0.0
[INFO] [stderr]   Downloaded libp2p-plaintext v0.3.0
[INFO] [stderr]   Downloaded ed25519-dalek v0.8.1
[INFO] [stderr]   Downloaded tempfile v3.0.6
[INFO] [stderr]   Downloaded hash-db v0.11.0
[INFO] [stderr]   Downloaded libp2p-kad v0.3.3
[INFO] [stderr]   Downloaded trie-db v0.11.0
[INFO] [stderr]   Downloaded parity-multiaddr v0.1.0
[INFO] [stderr]   Downloaded sysinfo v0.8.0
[INFO] [stderr]   Downloaded libp2p v0.3.1
[INFO] [stderr]   Downloaded stdweb v0.4.14
[INFO] [stderr]   Downloaded libp2p-core v0.3.4
[INFO] [stderr]   Downloaded uint v0.6.1
[INFO] [stderr]   Downloaded libp2p-secio v0.3.0
[INFO] [stderr]   Downloaded protobuf v2.3.0
[INFO] [stderr]   Downloaded curve25519-dalek v0.20.0
[INFO] [stderr]   Downloaded snow v0.5.1
[INFO] [stderr]   Downloaded libp2p-ping v0.3.0
[INFO] [stderr]   Downloaded asn1_der v0.6.1
[INFO] [stderr]   Downloaded librocksdb-sys v5.14.3
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-48/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-48/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" "+07fecb9cf34c4979a772ba38c99d6d9144768413" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 8de478d7a79719b745a6f43358c46c67026bb87f9dddab8b95699da7ef6b12d8
[INFO] running `Command { std: "docker" "start" "-a" "8de478d7a79719b745a6f43358c46c67026bb87f9dddab8b95699da7ef6b12d8", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "8de478d7a79719b745a6f43358c46c67026bb87f9dddab8b95699da7ef6b12d8", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "8de478d7a79719b745a6f43358c46c67026bb87f9dddab8b95699da7ef6b12d8", kill_on_drop: false }`
[INFO] [stdout] 8de478d7a79719b745a6f43358c46c67026bb87f9dddab8b95699da7ef6b12d8
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-48/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-48/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" "+07fecb9cf34c4979a772ba38c99d6d9144768413" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 361839e49cc91e2b95e626b6b6c314a142d0fc880b7fa41912fafaa0eeb40a68
[INFO] running `Command { std: "docker" "start" "-a" "361839e49cc91e2b95e626b6b6c314a142d0fc880b7fa41912fafaa0eeb40a68", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]    Compiling libc v0.2.48
[INFO] [stderr]    Compiling arrayvec v0.4.10
[INFO] [stderr]    Compiling byteorder v1.3.1
[INFO] [stderr]    Compiling semver-parser v0.7.0
[INFO] [stderr]    Compiling nodrop v0.1.13
[INFO] [stderr]    Compiling rayon-core v1.4.1
[INFO] [stderr]    Compiling lazy_static v1.2.0
[INFO] [stderr]    Compiling cfg-if v0.1.6
[INFO] [stderr]     Checking rand_core v0.4.0
[INFO] [stderr]    Compiling scopeguard v0.3.3
[INFO] [stderr]    Compiling memoffset v0.2.1
[INFO] [stderr]    Compiling rayon v1.0.3
[INFO] [stderr]    Compiling autocfg v0.1.2
[INFO] [stderr]    Compiling either v1.5.0
[INFO] [stderr]    Compiling typenum v1.10.0
[INFO] [stderr]     Checking void v1.0.2
[INFO] [stderr]    Compiling unicode-xid v0.1.0
[INFO] [stderr]     Checking stable_deref_trait v1.1.1
[INFO] [stderr]    Compiling serde v1.0.88
[INFO] [stderr]    Compiling proc-macro2 v0.4.27
[INFO] [stderr]     Checking opaque-debug v0.2.2
[INFO] [stderr]     Checking futures v0.1.25
[INFO] [stderr]    Compiling crunchy v0.1.6
[INFO] [stderr]     Checking arrayref v0.3.5
[INFO] [stderr]    Compiling failure_derive v0.1.5
[INFO] [stderr]     Checking rustc-demangle v0.1.13
[INFO] [stderr]    Compiling heapsize v0.4.2
[INFO] [stderr]     Checking slab v0.4.2
[INFO] [stderr]     Checking constant_time_eq v0.1.3
[INFO] [stderr]    Compiling subtle v2.0.0
[INFO] [stderr]     Checking spin v0.5.0
[INFO] [stderr]     Checking untrusted v0.6.2
[INFO] [stderr]    Compiling crunchy v0.2.1
[INFO] [stderr]     Checking hash-db v0.11.0
[INFO] [stderr]     Checking rustc-hex v2.0.1
[INFO] [stderr]     Checking keccak v0.1.0
[INFO] [stderr]     Checking static_assertions v0.2.5
[INFO] [stderr]     Checking memory_units v0.3.0
[INFO] [stderr]     Checking byte-tools v0.2.0
[INFO] [stderr]     Checking base58 v0.1.0
[INFO] [stderr]     Checking lazycell v1.2.1
[INFO] [stderr]     Checking sha1 v0.6.0
[INFO] [stderr]     Checking environmental v1.0.0
[INFO] [stderr]     Checking fnv v1.0.6
[INFO] [stderr]     Checking integer-sqrt v0.1.2
[INFO] [stderr]     Checking itoa v0.4.3
[INFO] [stderr]    Compiling pkg-config v0.3.14
[INFO] [stderr]    Compiling ryu v0.2.7
[INFO] [stderr]    Compiling httparse v1.3.3
[INFO] [stderr]     Checking subtle v1.0.0
[INFO] [stderr]    Compiling num-integer v0.1.39
[INFO] [stderr]     Checking matches v0.1.8
[INFO] [stderr]     Checking quick-error v1.2.2
[INFO] [stderr]    Compiling openssl v0.10.16
[INFO] [stderr]     Checking percent-encoding v1.0.1
[INFO] [stderr]    Compiling protobuf v2.3.0
[INFO] [stderr]    Compiling memchr v2.2.0
[INFO] [stderr]     Checking byteorder v0.4.2
[INFO] [stderr]     Checking bs58 v0.2.2
[INFO] [stderr]     Checking data-encoding v2.1.2
[INFO] [stderr]    Compiling slog v2.4.1
[INFO] [stderr]     Checking once_cell v0.1.8
[INFO] [stderr]     Checking take_mut v0.2.2
[INFO] [stderr]    Compiling regex v1.1.0
[INFO] [stderr]     Checking parity-bytes v0.1.0 (https://github.com/paritytech/parity-common?rev=b0317f649ab2c665b7987b8475878fc4d2e1f81d#b0317f64)
[INFO] [stderr]    Compiling glob v0.2.11
[INFO] [stderr]    Compiling bitflags v1.0.4
[INFO] [stderr]    Compiling native-tls v0.2.2
[INFO] [stderr]     Checking ucd-util v0.1.3
[INFO] [stderr]     Checking safemem v0.3.0
[INFO] [stderr]    Compiling unicode-width v0.1.5
[INFO] [stderr]     Checking openssl-probe v0.1.2
[INFO] [stderr]    Compiling utf8-ranges v1.0.2
[INFO] [stderr]     Checking scoped-tls v0.1.2
[INFO] [stderr]    Compiling ansi_term v0.11.0
[INFO] [stderr]     Checking language-tags v0.2.2
[INFO] [stderr]    Compiling bindgen v0.43.2
[INFO] [stderr]     Checking typeable v0.1.2
[INFO] [stderr]    Compiling vec_map v0.8.1
[INFO] [stderr]     Checking traitobject v0.1.0
[INFO] [stderr]    Compiling strsim v0.7.0
[INFO] [stderr]    Compiling termcolor v1.0.4
[INFO] [stderr]     Checking bitflags v0.9.1
[INFO] [stderr]     Checking byteorder v0.5.3
[INFO] [stderr]     Checking nohash-hasher v0.1.1
[INFO] [stderr]     Checking quick-error v0.1.4
[INFO] [stderr]     Checking static_slice v0.0.3
[INFO] [stderr]    Compiling peeking_take_while v0.1.2
[INFO] [stderr]    Compiling make-cmd v0.1.0
[INFO] [stderr]     Checking linked-hash-map v0.4.2
[INFO] [stderr]    Compiling gcc v0.3.55
[INFO] [stderr]     Checking string v0.1.3
[INFO] [stderr]     Checking try-lock v0.2.2
[INFO] [stderr]     Checking indexmap v1.0.2
[INFO] [stderr]     Checking rustc-serialize v0.3.24
[INFO] [stderr]     Checking linked-hash-map v0.5.1
[INFO] [stderr]     Checking interleaved-ordered v0.1.1
[INFO] [stderr]    Compiling unicode-segmentation v1.2.1
[INFO] [stderr]    Compiling nix v0.11.0
[INFO] [stderr]    Compiling names v0.11.0
[INFO] [stderr]     Checking hex v0.3.2
[INFO] [stderr]    Compiling sysinfo v0.8.0
[INFO] [stderr]     Checking xdg v2.2.0
[INFO] [stderr]     Checking target_info v0.1.0
[INFO] [stderr]     Checking log v0.4.6
[INFO] [stderr]     Checking block-padding v0.1.3
[INFO] [stderr]    Compiling unicase v1.4.2
[INFO] [stderr]    Compiling unicase v2.2.0
[INFO] [stderr]     Checking crossbeam-utils v0.2.2
[INFO] [stderr]    Compiling num-traits v0.2.6
[INFO] [stderr]     Checking hex-literal v0.1.2
[INFO] [stderr] error: could not compile `slog`
[INFO] [stderr] 
[INFO] [stderr] Caused by:
[INFO] [stderr]   process didn't exit successfully: `rustc --crate-name build_script_build /opt/rustwide/cargo-home/registry/src/github.com-1ecc6299db9ec823/slog-2.4.1/build.rs --error-format=json --json=diagnostic-rendered-ansi --crate-type bin --emit=dep-info,link -C embed-bitcode=no -C debuginfo=2 --cfg 'feature="default"' --cfg 'feature="std"' -C metadata=2e670435bf71e875 -C extra-filename=-2e670435bf71e875 --out-dir /opt/rustwide/target/debug/build/slog-2e670435bf71e875 -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" "361839e49cc91e2b95e626b6b6c314a142d0fc880b7fa41912fafaa0eeb40a68", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "361839e49cc91e2b95e626b6b6c314a142d0fc880b7fa41912fafaa0eeb40a68", kill_on_drop: false }`
[INFO] [stdout] 361839e49cc91e2b95e626b6b6c314a142d0fc880b7fa41912fafaa0eeb40a68