[INFO] cloning repository https://github.com/blockchain-analysis-study/my-polkadot
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/blockchain-analysis-study/my-polkadot" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fblockchain-analysis-study%2Fmy-polkadot", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fblockchain-analysis-study%2Fmy-polkadot'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] f5ec6190c5ba633ac72ef4c7049b9bc2a7b01289
[INFO] documenting blockchain-analysis-study/my-polkadot against beta-2021-08-01 for beta-1.55-rustdoc-1
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fblockchain-analysis-study%2Fmy-polkadot" "/workspace/builds/worker-85/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-85/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/blockchain-analysis-study/my-polkadot on toolchain beta-2021-08-01
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+beta-2021-08-01" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/blockchain-analysis-study/my-polkadot
[INFO] finished tweaking git repo https://github.com/blockchain-analysis-study/my-polkadot
[INFO] tweaked toml for git repo https://github.com/blockchain-analysis-study/my-polkadot written to /workspace/builds/worker-85/source/Cargo.toml
[INFO] crate git repo https://github.com/blockchain-analysis-study/my-polkadot already has a lockfile, it will not be regenerated
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+beta-2021-08-01" "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/parity-common`
[INFO] [stderr]     Updating git repository `https://github.com/paritytech/reed-solomon-erasure`
[INFO] [stderr]     Updating git repository `https://github.com/paritytech/substrate-bip39`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded primitive-types v0.2.1
[INFO] [stderr]   Downloaded ed25519-dalek v1.0.0-pre.1
[INFO] [stderr]   Downloaded tiny-keccak v1.4.2
[INFO] [stderr]   Downloaded stdweb-internal-macros v0.2.6
[INFO] [stderr]   Downloaded sha2 v0.6.0
[INFO] [stderr]   Downloaded redox_syscall v0.1.52
[INFO] [stderr]   Downloaded tk-listen v0.2.1
[INFO] [stderr]   Downloaded jsonrpc-pubsub v10.1.0
[INFO] [stderr]   Downloaded hex-literal v0.1.4
[INFO] [stderr]   Downloaded multistream-select v0.4.0
[INFO] [stderr]   Downloaded jsonrpc-http-server v10.1.0
[INFO] [stderr]   Downloaded shell32-sys v0.1.2
[INFO] [stderr]   Downloaded cexpr v0.3.5
[INFO] [stderr]   Downloaded wasm-bindgen-macro-support v0.2.43
[INFO] [stderr]   Downloaded rocksdb v0.10.1
[INFO] [stderr]   Downloaded parity-crypto v0.3.0
[INFO] [stderr]   Downloaded tokio v0.1.18
[INFO] [stderr]   Downloaded pretty_assertions v0.5.1
[INFO] [stderr]   Downloaded ctrlc v3.1.1
[INFO] [stderr]   Downloaded paste v0.1.5
[INFO] [stderr]   Downloaded fdlimit v0.1.1
[INFO] [stderr]   Downloaded libp2p-floodsub v0.7.0
[INFO] [stderr]   Downloaded jsonrpc-ws-server v10.1.0
[INFO] [stderr]   Downloaded once_cell v0.1.8
[INFO] [stderr]   Downloaded parity-codec-derive v3.3.0
[INFO] [stderr]   Downloaded jsonrpc-core v10.1.0
[INFO] [stderr]   Downloaded snow v0.5.2
[INFO] [stderr]   Downloaded hash-db v0.12.2
[INFO] [stderr]   Downloaded tokio-threadpool v0.1.13
[INFO] [stderr]   Downloaded twox-hash v1.2.0
[INFO] [stderr]   Downloaded impl-codec v0.2.0
[INFO] [stderr]   Downloaded hash256-std-hasher v0.12.2
[INFO] [stderr]   Downloaded quick-error v0.1.4
[INFO] [stderr]   Downloaded wasm-bindgen-webidl v0.2.43
[INFO] [stderr]   Downloaded tokio-tls v0.2.1
[INFO] [stderr]   Downloaded ctr v0.3.2
[INFO] [stderr]   Downloaded wasm-bindgen v0.2.43
[INFO] [stderr]   Downloaded uint v0.6.1
[INFO] [stderr]   Downloaded tokio-dns-unofficial v0.4.0
[INFO] [stderr]   Downloaded aes-ctr v0.3.0
[INFO] [stderr]   Downloaded static_slice v0.0.3
[INFO] [stderr]   Downloaded globset v0.4.2
[INFO] [stderr]   Downloaded interleaved-ordered v0.1.1
[INFO] [stderr]   Downloaded libp2p-yamux v0.7.0
[INFO] [stderr]   Downloaded web-sys v0.3.20
[INFO] [stderr]   Downloaded slog_derive v0.1.1
[INFO] [stderr]   Downloaded structopt v0.2.15
[INFO] [stderr]   Downloaded wasm-bindgen-backend v0.2.43
[INFO] [stderr]   Downloaded jsonrpc-server-utils v10.1.0
[INFO] [stderr]   Downloaded libp2p-identify v0.7.0
[INFO] [stderr]   Downloaded libp2p-plaintext v0.7.0
[INFO] [stderr]   Downloaded hmac v0.7.0
[INFO] [stderr]   Downloaded safe-mix v1.0.0
[INFO] [stderr]   Downloaded libp2p-secio v0.7.0
[INFO] [stderr]   Downloaded wasm-bindgen-macro v0.2.43
[INFO] [stderr]   Downloaded stdweb v0.4.15
[INFO] [stderr]   Downloaded proc-macro-hack-impl v0.4.1
[INFO] [stderr]   Downloaded blake2 v0.8.0
[INFO] [stderr]   Downloaded clang-sys v0.26.4
[INFO] [stderr]   Downloaded jsonrpc-derive v10.1.0
[INFO] [stderr]   Downloaded finality-grandpa v0.7.2
[INFO] [stderr]   Downloaded parity-ws v0.8.0
[INFO] [stderr]   Downloaded rocksdb v0.11.0
[INFO] [stderr]   Downloaded hmac-drbg v0.1.2
[INFO] [stderr]   Downloaded libp2p-kad v0.7.0
[INFO] [stderr]   Downloaded libp2p v0.7.0
[INFO] [stderr]   Downloaded app_dirs v1.2.1
[INFO] [stderr]   Downloaded structopt-derive v0.2.15
[INFO] [stderr]   Downloaded libp2p-dns v0.7.0
[INFO] [stderr]   Downloaded bigint v4.4.1
[INFO] [stderr]   Downloaded libp2p-mdns v0.7.0
[INFO] [stderr]   Downloaded derive_more v0.14.0
[INFO] [stderr]   Downloaded cc v1.0.26
[INFO] [stderr]   Downloaded proc-macro-hack v0.4.1
[INFO] [stderr]   Downloaded exit-future v0.1.4
[INFO] [stderr]   Downloaded integer-sqrt v0.1.2
[INFO] [stderr]   Downloaded memory-db v0.12.2
[INFO] [stderr]   Downloaded block-padding v0.1.3
[INFO] [stderr]   Downloaded opaque-debug v0.2.2
[INFO] [stderr]   Downloaded bumpalo v2.4.1
[INFO] [stderr]   Downloaded stream-cipher v0.3.0
[INFO] [stderr]   Downloaded hex-literal-impl v0.1.2
[INFO] [stderr]   Downloaded protobuf v2.4.2
[INFO] [stderr]   Downloaded yamux v0.2.1
[INFO] [stderr]   Downloaded asn1_der_derive v0.1.1
[INFO] [stderr]   Downloaded environmental v1.0.1
[INFO] [stderr]   Downloaded paste-impl v0.1.5
[INFO] [stderr]   Downloaded bindgen v0.47.3
[INFO] [stderr]   Downloaded bitvec v0.8.0
[INFO] [stderr]   Downloaded libp2p-noise v0.5.0
[INFO] [stderr]   Downloaded proc-macro-hack v0.5.4
[INFO] [stderr]   Downloaded static_assertions v0.2.5
[INFO] [stderr]   Downloaded libp2p-core-derive v0.7.0
[INFO] [stderr]   Downloaded libp2p-ratelimit v0.7.0
[INFO] [stderr]   Downloaded js-sys v0.3.20
[INFO] [stderr]   Downloaded libp2p-websocket v0.7.0
[INFO] [stderr]   Downloaded parity-codec v3.5.1
[INFO] [stderr]   Downloaded nohash-hasher v0.1.1
[INFO] [stderr]   Downloaded rw-stream-sink v0.1.1
[INFO] [stderr]   Downloaded aio-limited v0.1.0
[INFO] [stderr]   Downloaded wasm-bindgen-futures v0.3.20
[INFO] [stderr]   Downloaded openssl v0.10.20
[INFO] [stderr]   Downloaded zeroize v0.5.2
[INFO] [stderr]   Downloaded fixed-hash v0.3.0
[INFO] [stderr]   Downloaded twofish v0.2.0
[INFO] [stderr]   Downloaded wasm-bindgen-shared v0.2.43
[INFO] [stderr]   Downloaded x25519-dalek v0.5.2
[INFO] [stderr]   Downloaded env_logger v0.6.1
[INFO] [stderr]   Downloaded slice-group-by v0.2.4
[INFO] [stderr]   Downloaded weedle v0.8.0
[INFO] [stderr]   Downloaded merlin v1.0.3
[INFO] [stderr]   Downloaded sysinfo v0.8.2
[INFO] [stderr]   Downloaded secp256k1 v0.12.2
[INFO] [stderr]   Downloaded regex v1.1.5
[INFO] [stderr]   Downloaded libp2p-uds v0.7.0
[INFO] [stderr]   Downloaded wasmi v0.4.4
[INFO] [stderr]   Downloaded bs58 v0.2.2
[INFO] [stderr]   Downloaded data-encoding v2.1.2
[INFO] [stderr]   Downloaded parity-multiaddr v0.4.0
[INFO] [stderr]   Downloaded strum v0.14.0
[INFO] [stderr]   Downloaded strum_macros v0.14.0
[INFO] [stderr]   Downloaded block-buffer v0.2.0
[INFO] [stderr]   Downloaded target_info v0.1.0
[INFO] [stderr]   Downloaded proc-macro-crate v0.1.3
[INFO] [stderr]   Downloaded impl-serde v0.1.1
[INFO] [stderr]   Downloaded crunchy v0.2.1
[INFO] [stderr]   Downloaded clear_on_drop v0.2.3
[INFO] [stderr]   Downloaded schnorrkel v0.1.1
[INFO] [stderr]   Downloaded tiny-bip39 v0.6.1
[INFO] [stderr]   Downloaded parity-wasm v0.31.3
[INFO] [stderr]   Downloaded hashmap_core v0.1.10
[INFO] [stderr]   Downloaded trie-db v0.12.2
[INFO] [stderr]   Downloaded ws v0.7.9
[INFO] [stderr]   Downloaded websocket v0.22.3
[INFO] [stderr]   Downloaded libp2p-mplex v0.7.0
[INFO] [stderr]   Downloaded parity-multihash v0.1.0
[INFO] [stderr]   Downloaded cuckoofilter v0.3.2
[INFO] [stderr]   Downloaded unsigned-varint v0.2.2
[INFO] [stderr]   Downloaded sha3 v0.8.1
[INFO] [stderr]   Downloaded asn1_der v0.6.1
[INFO] [stderr]   Downloaded libsecp256k1 v0.2.2
[INFO] [stderr]   Downloaded subtle v2.0.0
[INFO] [stderr]   Downloaded openssl-sys v0.9.43
[INFO] [stderr]   Downloaded libp2p-tcp v0.7.0
[INFO] [stderr]   Downloaded libp2p-core v0.7.0
[INFO] [stderr]   Downloaded libp2p-ping v0.7.0
[INFO] [stderr]   Downloaded trie-root v0.12.2
[INFO] [stderr]   Downloaded vergen v3.0.4
[INFO] [stderr]   Downloaded elastic-array v0.10.2
[INFO] [stderr]   Downloaded curve25519-dalek v1.1.3
[INFO] [stderr]   Downloaded librocksdb-sys v5.17.2
[INFO] [stderr]   Downloaded hashbrown v0.1.8
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-85/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-85/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" "+beta-2021-08-01" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 5ab1b9bc9f2b84e679d4b34e6d36df006b7b79079be782a0f9b7490f61193e3f
[INFO] running `Command { std: "docker" "start" "-a" "5ab1b9bc9f2b84e679d4b34e6d36df006b7b79079be782a0f9b7490f61193e3f", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "5ab1b9bc9f2b84e679d4b34e6d36df006b7b79079be782a0f9b7490f61193e3f", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "5ab1b9bc9f2b84e679d4b34e6d36df006b7b79079be782a0f9b7490f61193e3f", kill_on_drop: false }`
[INFO] [stdout] 5ab1b9bc9f2b84e679d4b34e6d36df006b7b79079be782a0f9b7490f61193e3f
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-85/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-85/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" "+beta-2021-08-01" "doc" "--frozen" "--no-deps" "--document-private-items" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 16be3dda35328959ac2636b3034c4038da60aea7ca227215b751f8c277497a8c
[INFO] running `Command { std: "docker" "start" "-a" "16be3dda35328959ac2636b3034c4038da60aea7ca227215b751f8c277497a8c", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]    Compiling libc v0.2.51
[INFO] [stderr]    Compiling arrayvec v0.4.10
[INFO] [stderr]     Checking cfg-if v0.1.7
[INFO] [stderr]    Compiling rayon-core v1.4.1
[INFO] [stderr]    Compiling nodrop v0.1.13
[INFO] [stderr]    Compiling byteorder v1.3.1
[INFO] [stderr]    Compiling lazy_static v1.3.0
[INFO] [stderr]    Compiling scopeguard v0.3.3
[INFO] [stderr]    Compiling rayon v1.0.3
[INFO] [stderr]    Compiling memoffset v0.2.1
[INFO] [stderr]    Compiling syn v0.15.33
[INFO] [stderr]    Compiling either v1.5.2
[INFO] [stderr]     Checking rand_core v0.4.0
[INFO] [stderr]     Checking smallvec v0.6.9
[INFO] [stderr]    Compiling typenum v1.10.0
[INFO] [stderr]     Checking stable_deref_trait v1.1.1
[INFO] [stderr]    Compiling serde v1.0.89
[INFO] [stderr]    Compiling failure_derive v0.1.5
[INFO] [stderr]     Checking opaque-debug v0.2.2
[INFO] [stderr]     Checking rustc-demangle v0.1.13
[INFO] [stderr]     Checking byte-tools v0.3.1
[INFO] [stderr]     Checking fake-simd v0.1.2
[INFO] [stderr]     Checking subtle v1.0.0
[INFO] [stderr]     Checking futures v0.1.26
[INFO] [stderr]    Compiling subtle v2.0.0
[INFO] [stderr]    Compiling memchr v2.2.0
[INFO] [stderr]     Checking untrusted v0.6.2
[INFO] [stderr]     Checking spin v0.5.0
[INFO] [stderr]    Compiling crunchy v0.1.6
[INFO] [stderr]    Compiling regex v1.1.5
[INFO] [stderr]     Checking arrayref v0.3.5
[INFO] [stderr]    Compiling heapsize v0.4.2
[INFO] [stderr]     Checking ucd-util v0.1.3
[INFO] [stderr]     Checking utf8-ranges v1.0.2
[INFO] [stderr]     Checking fnv v1.0.6
[INFO] [stderr]     Checking constant_time_eq v0.1.3
[INFO] [stderr]    Compiling crunchy v0.2.1
[INFO] [stderr]     Checking keccak v0.1.0
[INFO] [stderr]     Checking rustc-hex v2.0.1
[INFO] [stderr]     Checking hash-db v0.12.2
[INFO] [stderr]     Checking static_assertions v0.2.5
[INFO] [stderr]     Checking memory_units v0.3.0
[INFO] [stderr]     Checking base58 v0.1.0
[INFO] [stderr]     Checking hex v0.3.2
[INFO] [stderr]     Checking hashmap_core v0.1.10
[INFO] [stderr]     Checking lazycell v1.2.1
[INFO] [stderr]     Checking byte-tools v0.2.0
[INFO] [stderr]     Checking quick-error v1.2.2
[INFO] [stderr]     Checking environmental v1.0.1
[INFO] [stderr]     Checking integer-sqrt v0.1.2
[INFO] [stderr]     Checking void v1.0.2
[INFO] [stderr]    Compiling protobuf v2.4.2
[INFO] [stderr]     Checking bs58 v0.2.2
[INFO] [stderr]     Checking data-encoding v2.1.2
[INFO] [stderr]     Checking zeroize v0.5.2
[INFO] [stderr]    Compiling pkg-config v0.3.14
[INFO] [stderr]     Checking itoa v0.4.3
[INFO] [stderr]    Compiling httparse v1.3.3
[INFO] [stderr]    Compiling ryu v0.2.7
[INFO] [stderr]    Compiling openssl v0.10.20
[INFO] [stderr]    Compiling num-integer v0.1.39
[INFO] [stderr]    Compiling native-tls v0.2.2
[INFO] [stderr]     Checking safemem v0.3.0
[INFO] [stderr]    Compiling slog v2.4.1
[INFO] [stderr]     Checking traitobject v0.1.0
[INFO] [stderr]     Checking strum v0.14.0
[INFO] [stderr]     Checking byteorder v0.5.3
[INFO] [stderr]     Checking nohash-hasher v0.1.1
[INFO] [stderr]     Checking c_linked_list v1.1.1
[INFO] [stderr]     Checking quick-error v0.1.4
[INFO] [stderr]     Checking static_slice v0.0.3
[INFO] [stderr]    Compiling proc-macro-hack-impl v0.4.1
[INFO] [stderr]     Checking take_mut v0.2.2
[INFO] [stderr]     Checking parity-bytes v0.1.0 (https://github.com/paritytech/parity-common?rev=b0317f649ab2c665b7987b8475878fc4d2e1f81d#b0317f64)
[INFO] [stderr]     Checking bitmask v0.5.0
[INFO] [stderr]    Compiling bitflags v1.0.4
[INFO] [stderr]    Compiling glob v0.2.11
[INFO] [stderr]    Compiling unicode-width v0.1.5
[INFO] [stderr]    Compiling strsim v0.7.0
[INFO] [stderr]    Compiling vec_map v0.8.1
[INFO] [stderr]    Compiling ansi_term v0.11.0
[INFO] [stderr]    Compiling termcolor v1.0.4
[INFO] [stderr]    Compiling bindgen v0.47.3
[INFO] [stderr]    Compiling peeking_take_while v0.1.2
[INFO] [stderr]     Checking linked-hash-map v0.5.2
[INFO] [stderr]    Compiling gcc v0.3.55
[INFO] [stderr]     Checking indexmap v1.0.2
[INFO] [stderr]     Checking interleaved-ordered v0.1.1
[INFO] [stderr]     Checking string v0.1.3
[INFO] [stderr]     Checking rustc-serialize v0.3.24
[INFO] [stderr]     Checking parity-bytes v0.1.0 (https://github.com/paritytech/parity-common?rev=616b40150ded71f57f650067fcbc5c99d7c343e6#616b4015)
[INFO] [stderr]     Checking target_info v0.1.0
[INFO] [stderr]     Checking bitvec v0.8.0
[INFO] [stderr]    Compiling sysinfo v0.8.2
[INFO] [stderr]    Compiling names v0.11.0
[INFO] [stderr]    Compiling nix v0.11.0
[INFO] [stderr]     Checking slice-group-by v0.2.4
[INFO] [stderr]    Compiling rand_pcg v0.1.2
[INFO] [stderr]    Compiling rand v0.6.5
[INFO] [stderr]    Compiling backtrace v0.3.14
[INFO] [stderr]    Compiling unicase v1.4.2
[INFO] [stderr]    Compiling nom v4.2.3
[INFO] [stderr]    Compiling unicase v2.3.0
[INFO] [stderr]    Compiling num-traits v0.2.6
[INFO] [stderr]     Checking app_dirs v1.2.1
[INFO] [stderr]    Compiling quote v0.6.12
[INFO] [stderr]    Compiling parking_lot_core v0.4.0
[INFO] [stderr]    Compiling sr-std v1.0.0 (https://github.com/paritytech/substrate?branch=polkadot-master#14bc1b40)
[INFO] [stderr]    Compiling sr-io v1.0.0 (https://github.com/paritytech/substrate?branch=polkadot-master#14bc1b40)
[INFO] [stderr]    Compiling parking_lot_core v0.3.1
[INFO] [stderr]    Compiling snow v0.5.2
[INFO] [stderr]    Compiling safe-mix v1.0.0
[INFO] [stderr]     Checking log v0.4.6
[INFO] [stderr] error: could not compile `futures`
[INFO] [stderr] 
[INFO] [stderr] Caused by:
[INFO] [stderr]   process didn't exit successfully: `rustc --crate-name futures /opt/rustwide/cargo-home/registry/src/github.com-1ecc6299db9ec823/futures-0.1.26/src/lib.rs --error-format=json --json=diagnostic-rendered-ansi --crate-type lib --emit=dep-info,metadata -C embed-bitcode=no -C debuginfo=2 --cfg 'feature="default"' --cfg 'feature="use_std"' --cfg 'feature="with-deprecated"' -C metadata=84a4b2cb9840a392 -C extra-filename=-84a4b2cb9840a392 --out-dir /opt/rustwide/target/debug/deps -L dependency=/opt/rustwide/target/debug/deps --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" "16be3dda35328959ac2636b3034c4038da60aea7ca227215b751f8c277497a8c", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "16be3dda35328959ac2636b3034c4038da60aea7ca227215b751f8c277497a8c", kill_on_drop: false }`
[INFO] [stdout] 16be3dda35328959ac2636b3034c4038da60aea7ca227215b751f8c277497a8c
