[INFO] fetching crate yarws 0.3.0...
[INFO] documenting yarws-0.3.0 against beta-2020-08-29 for beta-1.47-rustdoc-1
[INFO] extracting crate yarws 0.3.0 into /workspace/builds/worker-0/source
[INFO] validating manifest of crates.io crate yarws 0.3.0 on toolchain beta-2020-08-29
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+beta-2020-08-29" "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-0/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" "+beta-2020-08-29" "fetch" "--locked" "--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-0/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-0/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" "+beta-2020-08-29" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] d04081b3137bbde5911b0619dc7b42b3e952562d9d9c7de13e593b29ba962070
[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" "d04081b3137bbde5911b0619dc7b42b3e952562d9d9c7de13e593b29ba962070", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "d04081b3137bbde5911b0619dc7b42b3e952562d9d9c7de13e593b29ba962070", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "d04081b3137bbde5911b0619dc7b42b3e952562d9d9c7de13e593b29ba962070", kill_on_drop: false }`
[INFO] [stdout] d04081b3137bbde5911b0619dc7b42b3e952562d9d9c7de13e593b29ba962070
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-0/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-0/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" "+beta-2020-08-29" "doc" "--frozen" "--no-deps" "--document-private-items" "--message-format=json", kill_on_drop: false }`
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] [stdout] 7a933f147ac8a3702e29489bf72f759fee38b569a1526718c6b07fe3b215ddf0
[INFO] running `Command { std: "docker" "start" "-a" "7a933f147ac8a3702e29489bf72f759fee38b569a1526718c6b07fe3b215ddf0", kill_on_drop: false }`
[INFO] [stderr]    Compiling syn v1.0.17
[INFO] [stderr]    Compiling slog v2.5.2
[INFO] [stderr]     Checking futures-sink v0.3.4
[INFO] [stderr]     Checking base64 v0.12.0
[INFO] [stderr]    Compiling hex-literal-impl v0.2.1
[INFO] [stderr]     Checking dirs-sys v0.3.4
[INFO] [stderr]     Checking signal-hook-registry v1.2.0
[INFO] [stderr]     Checking num_cpus v1.12.0
[INFO] [stderr]     Checking colored v1.9.3
[INFO] [stderr]     Checking block-buffer v0.7.3
[INFO] [stderr]     Checking mio-uds v0.6.7
[INFO] [stderr]     Checking chrono v0.4.11
[INFO] [stderr]     Checking crossbeam v0.7.3
[INFO] [stderr]     Checking native-tls v0.2.4
[INFO] [stderr]     Checking futures-channel v0.3.4
[INFO] [stderr]     Checking dirs v2.0.2
[INFO] [stderr]     Checking sha-1 v0.8.2
[INFO] [stderr]     Checking term v0.6.1
[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-stdlog v4.0.0
[INFO] [stderr]     Checking slog-term v2.5.0
[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 serde_derive v1.0.106
[INFO] [stderr]    Compiling tokio-macros v0.2.5
[INFO] [stderr]    Compiling failure_derive v0.1.7
[INFO] [stderr]    Compiling proc-macro-error v1.0.2
[INFO] [stderr]     Checking failure v0.1.7
[INFO] [stderr]     Checking tokio v0.2.13
[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 lib --crate-name yarws src/lib.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/libbase64-806a8d180b40d22d.rmeta --extern colored=/opt/rustwide/target/debug/deps/libcolored-a84bc7d29066923b.rmeta --extern failure=/opt/rustwide/target/debug/deps/libfailure-fde5ad87988c272c.rmeta --extern futures=/opt/rustwide/target/debug/deps/libfutures-131e41faa8d63965.rmeta --extern hex_literal=/opt/rustwide/target/debug/deps/libhex_literal-e97a993886fb4432.rmeta --extern inflate=/opt/rustwide/target/debug/deps/libinflate-f26ac34af8730978.rmeta --extern miniz_oxide=/opt/rustwide/target/debug/deps/libminiz_oxide-ddaa145a0ae371a3.rmeta --extern native_tls=/opt/rustwide/target/debug/deps/libnative_tls-9f5360b5ec96359c.rmeta --extern rand=/opt/rustwide/target/debug/deps/librand-d14fdc8735966214.rmeta --extern serde=/opt/rustwide/target/debug/deps/libserde-00a9823e9960235f.rmeta --extern serde_json=/opt/rustwide/target/debug/deps/libserde_json-790be62e7ebfece5.rmeta --extern sha1=/opt/rustwide/target/debug/deps/libsha1-ec7c6a79609af071.rmeta --extern slog=/opt/rustwide/target/debug/deps/libslog-033f4152db95de0c.rmeta --extern slog_async=/opt/rustwide/target/debug/deps/libslog_async-231d105847538555.rmeta --extern slog_stdlog=/opt/rustwide/target/debug/deps/libslog_stdlog-9c464d040b91cef6.rmeta --extern slog_term=/opt/rustwide/target/debug/deps/libslog_term-1b2c55b90e62b3d1.rmeta --extern structopt=/opt/rustwide/target/debug/deps/libstructopt-b086462f29c769be.rmeta --extern tokio=/opt/rustwide/target/debug/deps/libtokio-5c884828d6573693.rmeta --extern tokio_tls=/opt/rustwide/target/debug/deps/libtokio_tls-5475c6446722c481.rmeta --extern url=/opt/rustwide/target/debug/deps/liburl-9f039bcac605b027.rmeta --cap-lints=warn --crate-version 0.3.0` (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" "7a933f147ac8a3702e29489bf72f759fee38b569a1526718c6b07fe3b215ddf0", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "7a933f147ac8a3702e29489bf72f759fee38b569a1526718c6b07fe3b215ddf0", kill_on_drop: false }`
[INFO] [stdout] 7a933f147ac8a3702e29489bf72f759fee38b569a1526718c6b07fe3b215ddf0