[INFO] fetching crate yarws 0.3.0...
[INFO] documenting yarws-0.3.0 against 1.46.0 for beta-1.47-rustdoc-1
[INFO] extracting crate yarws 0.3.0 into /workspace/builds/worker-12/source
[INFO] validating manifest of crates.io crate yarws 0.3.0 on toolchain 1.46.0
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+1.46.0" "read-manifest" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] started tweaking crates.io crate yarws 0.3.0
[INFO] finished tweaking crates.io crate yarws 0.3.0
[INFO] tweaked toml for crates.io crate yarws 0.3.0 written to /workspace/builds/worker-12/source/Cargo.toml
[INFO] crate crates.io crate yarws 0.3.0 already has a lockfile, it will not be regenerated
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+1.46.0" "fetch" "--locked" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-12/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-12/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" "rustops/crates-build-env@sha256:d92eaeed33fa75130ca1ee6c8a01d1ffb62bac859dfdfb3450e3e5d1c0146529" "/opt/rustwide/cargo-home/bin/cargo" "+1.46.0" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 3746ee042ebd803a84bfe46e86e844cb8c167c4362e30e2d1b7984f64e6dc375
[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" "3746ee042ebd803a84bfe46e86e844cb8c167c4362e30e2d1b7984f64e6dc375", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "3746ee042ebd803a84bfe46e86e844cb8c167c4362e30e2d1b7984f64e6dc375", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "3746ee042ebd803a84bfe46e86e844cb8c167c4362e30e2d1b7984f64e6dc375", kill_on_drop: false }`
[INFO] [stdout] 3746ee042ebd803a84bfe46e86e844cb8c167c4362e30e2d1b7984f64e6dc375
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-12/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-12/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" "rustops/crates-build-env@sha256:d92eaeed33fa75130ca1ee6c8a01d1ffb62bac859dfdfb3450e3e5d1c0146529" "/opt/rustwide/cargo-home/bin/cargo" "+1.46.0" "doc" "--frozen" "--no-deps" "--document-private-items" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] ae4323f0baf2b1a1d9a6eba27eceb2607c3b14b3dbcccdcd8aadf0b3b14ca263
[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" "ae4323f0baf2b1a1d9a6eba27eceb2607c3b14b3dbcccdcd8aadf0b3b14ca263", 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 slog v2.5.2
[INFO] [stderr]     Checking futures-sink v0.3.4
[INFO] [stderr]    Compiling openssl-sys v0.9.55
[INFO] [stderr]    Compiling hex-literal-impl v0.2.1
[INFO] [stderr]     Checking unicode-normalization v0.1.12
[INFO] [stderr]     Checking iovec v0.1.4
[INFO] [stderr]     Checking net2 v0.2.33
[INFO] [stderr]     Checking signal-hook-registry v1.2.0
[INFO] [stderr]     Checking backtrace-sys v0.1.35
[INFO] [stderr]     Checking colored v1.9.3
[INFO] [stderr]    Compiling syn v1.0.17
[INFO] [stderr]     Checking block-buffer v0.7.3
[INFO] [stderr]     Checking futures-channel v0.3.4
[INFO] [stderr]     Checking backtrace v0.3.46
[INFO] [stderr]     Checking sha-1 v0.8.2
[INFO] [stderr]     Checking mio v0.6.21
[INFO] [stderr]     Checking hex-literal v0.2.1
[INFO] [stderr]     Checking slog-scope v4.3.0
[INFO] [stderr]     Checking slog-async v2.5.0
[INFO] [stderr]     Checking slog-term v2.5.0
[INFO] [stderr]     Checking slog-stdlog v4.0.0
[INFO] [stderr]     Checking idna v0.2.0
[INFO] [stderr]    Compiling openssl v0.10.29
[INFO] [stderr]    Compiling native-tls v0.2.4
[INFO] [stderr]     Checking mio-uds v0.6.7
[INFO] [stderr]     Checking url v2.1.1
[INFO] [stderr]    Compiling syn-mid v0.5.0
[INFO] [stderr]    Compiling synstructure v0.12.3
[INFO] [stderr]    Compiling futures-macro v0.3.4
[INFO] [stderr]    Compiling proc-macro-error-attr v1.0.2
[INFO] [stderr]    Compiling tokio-macros v0.2.5
[INFO] [stderr]    Compiling serde_derive v1.0.106
[INFO] [stderr]    Compiling failure_derive v0.1.7
[INFO] [stderr]    Compiling proc-macro-error v1.0.2
[INFO] [stderr]     Checking tokio v0.2.13
[INFO] [stderr]     Checking failure v0.1.7
[INFO] [stderr]    Compiling structopt-derive v0.4.7
[INFO] [stderr]     Checking futures-util v0.3.4
[INFO] [stderr]     Checking futures-executor v0.3.4
[INFO] [stderr]     Checking structopt v0.3.14
[INFO] [stderr]     Checking futures v0.3.4
[INFO] [stderr]     Checking tokio-tls v0.3.0
[INFO] [stderr]     Checking serde v1.0.106
[INFO] [stderr]     Checking serde_json v1.0.52
[INFO] [stderr]     Checking yarws v0.3.0 (/opt/rustwide/workdir)
[INFO] [stderr]  Documenting yarws v0.3.0 (/opt/rustwide/workdir)
[INFO] [stderr] error: Could not document `yarws`.
[INFO] [stderr] 
[INFO] [stderr] Caused by:
[INFO] [stderr]   process didn't exit successfully: `rustdoc --edition=2018 --crate-type bin --crate-name chan_test src/bin/chan_test.rs -o /opt/rustwide/target/doc --error-format=json --json=diagnostic-rendered-ansi --document-private-items -L dependency=/opt/rustwide/target/debug/deps --extern base64=/opt/rustwide/target/debug/deps/libbase64-13b560f8e4c12cfb.rmeta --extern colored=/opt/rustwide/target/debug/deps/libcolored-00245e70cc3a0eda.rmeta --extern failure=/opt/rustwide/target/debug/deps/libfailure-540dd6488d607ac3.rmeta --extern futures=/opt/rustwide/target/debug/deps/libfutures-c392ecf41b4fa5ad.rmeta --extern hex_literal=/opt/rustwide/target/debug/deps/libhex_literal-d187823a4d487ab0.rmeta --extern inflate=/opt/rustwide/target/debug/deps/libinflate-e7253cd6e6cfb5fd.rmeta --extern miniz_oxide=/opt/rustwide/target/debug/deps/libminiz_oxide-54fe4b046196d421.rmeta --extern native_tls=/opt/rustwide/target/debug/deps/libnative_tls-5ea6a63a0bda943e.rmeta --extern rand=/opt/rustwide/target/debug/deps/librand-10ec776f077887b0.rmeta --extern serde=/opt/rustwide/target/debug/deps/libserde-0772f3cf16643e49.rmeta --extern serde_json=/opt/rustwide/target/debug/deps/libserde_json-80f898a345a27996.rmeta --extern sha1=/opt/rustwide/target/debug/deps/libsha1-010397cd1b046ede.rmeta --extern slog=/opt/rustwide/target/debug/deps/libslog-cdf337398563f389.rmeta --extern slog_async=/opt/rustwide/target/debug/deps/libslog_async-c20d68f0d2e0e52d.rmeta --extern slog_stdlog=/opt/rustwide/target/debug/deps/libslog_stdlog-5afe51a24e442859.rmeta --extern slog_term=/opt/rustwide/target/debug/deps/libslog_term-ffe34bb6f8fd9238.rmeta --extern structopt=/opt/rustwide/target/debug/deps/libstructopt-766b82f24da68500.rmeta --extern tokio=/opt/rustwide/target/debug/deps/libtokio-b0c0c20bde9983dc.rmeta --extern tokio_tls=/opt/rustwide/target/debug/deps/libtokio_tls-6499e9eb0b8c1341.rmeta --extern url=/opt/rustwide/target/debug/deps/liburl-c65e7eb61b912cc3.rmeta --extern yarws=/opt/rustwide/target/debug/deps/libyarws-66016b31d02b2fed.rmeta --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" "ae4323f0baf2b1a1d9a6eba27eceb2607c3b14b3dbcccdcd8aadf0b3b14ca263", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "ae4323f0baf2b1a1d9a6eba27eceb2607c3b14b3dbcccdcd8aadf0b3b14ca263", kill_on_drop: false }`
[INFO] [stdout] ae4323f0baf2b1a1d9a6eba27eceb2607c3b14b3dbcccdcd8aadf0b3b14ca263