[INFO] cloning repository https://github.com/sxend/rust_study
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/sxend/rust_study" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fsxend%2Frust_study", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fsxend%2Frust_study'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] e97ef5bcefdee569d46d37a8cfe474a4f310b41e
[INFO] documenting sxend/rust_study against 1.46.0 for beta-1.47-rustdoc-1
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fsxend%2Frust_study" "/workspace/builds/worker-7/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-7/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/sxend/rust_study 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 git repo https://github.com/sxend/rust_study
[INFO] finished tweaking git repo https://github.com/sxend/rust_study
[INFO] tweaked toml for git repo https://github.com/sxend/rust_study written to /workspace/builds/worker-7/source/Cargo.toml
[INFO] crate git repo https://github.com/sxend/rust_study 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] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-7/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-7/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] c3720fcb351eebc2fee1fefc301a3d1515e6988d680d93d3a8f8352294708827
[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" "c3720fcb351eebc2fee1fefc301a3d1515e6988d680d93d3a8f8352294708827", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "c3720fcb351eebc2fee1fefc301a3d1515e6988d680d93d3a8f8352294708827", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "c3720fcb351eebc2fee1fefc301a3d1515e6988d680d93d3a8f8352294708827", kill_on_drop: false }`
[INFO] [stdout] c3720fcb351eebc2fee1fefc301a3d1515e6988d680d93d3a8f8352294708827
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-7/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-7/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] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] [stdout] af9e43bc210a30e76bf3dca7ed2026dd71d28460e10ca16bead5c02e43540d53
[INFO] running `Command { std: "docker" "start" "-a" "af9e43bc210a30e76bf3dca7ed2026dd71d28460e10ca16bead5c02e43540d53", kill_on_drop: false }`
[INFO] [stderr]    Compiling cc v1.0.26
[INFO] [stderr]    Compiling serde v1.0.82
[INFO] [stderr]    Compiling failure_derive v0.1.3
[INFO] [stderr]     Checking arc-swap v0.3.6
[INFO] [stderr]    Compiling crc32fast v1.1.2
[INFO] [stderr]     Checking string v0.1.2
[INFO] [stderr]     Checking regex-syntax v0.3.9
[INFO] [stderr]     Checking route-recognizer v0.1.12
[INFO] [stderr]     Checking pipeline v0.5.0
[INFO] [stderr]     Checking askama_escape v0.1.0
[INFO] [stderr]     Checking crossbeam-utils v0.6.1
[INFO] [stderr]     Checking tower-service v0.1.0
[INFO] [stderr]    Compiling actix-web v0.7.16
[INFO] [stderr]     Checking arrayvec v0.4.8
[INFO] [stderr]     Checking error v0.1.9
[INFO] [stderr]    Compiling libc v0.2.44
[INFO] [stderr]     Checking want v0.0.6
[INFO] [stderr]     Checking tokio-current-thread v0.1.4
[INFO] [stderr]     Checking num_cpus v1.8.0
[INFO] [stderr]     Checking iovec v0.1.2
[INFO] [stderr]     Checking rand v0.5.5
[INFO] [stderr]     Checking net2 v0.2.33
[INFO] [stderr]     Checking time v0.1.40
[INFO] [stderr]     Checking hostname v0.1.5
[INFO] [stderr]     Checking socket2 v0.3.8
[INFO] [stderr]     Checking memchr v1.0.2
[INFO] [stderr]     Checking memchr v0.1.11
[INFO] [stderr]     Checking url v1.7.2
[INFO] [stderr]     Checking num-complex v0.1.43
[INFO] [stderr]     Checking tokio-timer v0.2.8
[INFO] [stderr]     Checking futures-cpupool v0.1.8
[INFO] [stderr]     Checking tempdir v0.3.7
[INFO] [stderr]     Checking bytes v0.4.11
[INFO] [stderr]     Checking signal-hook v0.1.6
[INFO] [stderr]     Checking resolv-conf v0.6.1
[INFO] [stderr]     Checking twoway v0.1.8
[INFO] [stderr]    Compiling syn v0.15.22
[INFO] [stderr]     Checking num-bigint v0.1.44
[INFO] [stderr]     Checking thread-id v2.0.0
[INFO] [stderr]     Checking crossbeam-epoch v0.6.1
[INFO] [stderr]     Checking buf_redux v0.6.3
[INFO] [stderr]     Checking aho-corasick v0.5.3
[INFO] [stderr]     Checking mio v0.6.16
[INFO] [stderr]     Checking thread_local v0.2.7
[INFO] [stderr]     Checking rust-crypto v0.2.36
[INFO] [stderr]     Checking env_logger v0.6.0
[INFO] [stderr]     Checking tokio-io v0.1.10
[INFO] [stderr]     Checking http v0.1.14
[INFO] [stderr]     Checking crossbeam-deque v0.6.2
[INFO] [stderr]     Checking crossbeam-channel v0.3.3
[INFO] [stderr]     Checking tokio-threadpool v0.1.9
[INFO] [stderr]     Checking num-rational v0.1.42
[INFO] [stderr]     Checking hyper v0.10.15
[INFO] [stderr]     Checking regex v0.1.80
[INFO] [stderr]     Checking num v0.1.42
[INFO] [stderr]     Checking parking_lot_core v0.3.1
[INFO] [stderr]     Checking mio-uds v0.6.7
[INFO] [stderr]    Compiling backtrace-sys v0.1.24
[INFO] [stderr]    Compiling brotli-sys v0.3.2
[INFO] [stderr]    Compiling ring v0.13.5
[INFO] [stderr]    Compiling miniz-sys v0.1.11
[INFO] [stderr]     Checking tokio-codec v0.1.1
[INFO] [stderr]     Checking parking_lot v0.6.4
[INFO] [stderr]     Checking tokio-fs v0.1.4
[INFO] [stderr]     Checking tokio-reactor v0.1.7
[INFO] [stderr]    Compiling phf_generator v0.7.23
[INFO] [stderr]    Compiling phf_codegen v0.7.23
[INFO] [stderr]     Checking flate2 v1.0.6
[INFO] [stderr]    Compiling mime_guess v1.8.6
[INFO] [stderr]    Compiling mime_guess v2.0.0-alpha.6
[INFO] [stderr]     Checking tokio-tcp v0.1.2
[INFO] [stderr]     Checking tokio-udp v0.1.3
[INFO] [stderr]     Checking tokio-uds v0.2.4
[INFO] [stderr]     Checking tokio-signal v0.2.7
[INFO] [stderr]     Checking backtrace v0.3.11
[INFO] [stderr]     Checking markdown v0.2.0
[INFO] [stderr]     Checking tokio v0.1.13
[INFO] [stderr]     Checking tokio-core v0.1.17
[INFO] [stderr]     Checking h2 v0.1.13
[INFO] [stderr]     Checking iron v0.6.0
[INFO] [stderr]     Checking multipart v0.13.6
[INFO] [stderr]     Checking persistent v0.4.0
[INFO] [stderr]     Checking router v0.6.0
[INFO] [stderr]     Checking cookie v0.11.0
[INFO] [stderr]     Checking serde_json v1.0.33
[INFO] [stderr]     Checking uuid v0.7.1
[INFO] [stderr]     Checking serde_urlencoded v0.5.4
[INFO] [stderr]     Checking hyper v0.12.18
[INFO] [stderr]    Compiling synstructure v0.10.1
[INFO] [stderr]     Checking brotli2 v0.3.2
[INFO] [stderr]     Checking bodyparser v0.8.0
[INFO] [stderr]     Checking urlencoded v0.6.0
[INFO] [stderr]     Checking params v0.8.0
[INFO] [stderr]    Compiling actix_derive v0.3.2
[INFO] [stderr]    Compiling serde_derive v1.0.82
[INFO] [stderr]     Checking failure v0.1.3
[INFO] [stderr]     Checking trust-dns-proto v0.5.0
[INFO] [stderr]     Checking trust-dns-resolver v0.10.0
[INFO] [stderr]     Checking actix v0.7.9
[INFO] [stderr]     Checking actix-net v0.2.5
[INFO] [stderr]     Checking docopt v1.0.2
[INFO] [stderr]  Documenting rust_study v0.1.0 (/opt/rustwide/workdir)
[INFO] [stderr] error: Could not document `rust_study`.
[INFO] [stderr] 
[INFO] [stderr] Caused by:
[INFO] [stderr]   process didn't exit successfully: `rustdoc --edition=2018 --crate-type bin --crate-name options_sample src/bin/options_sample.rs -o /opt/rustwide/target/doc --error-format=json --json=diagnostic-rendered-ansi --document-private-items -L dependency=/opt/rustwide/target/debug/deps --extern actix_web=/opt/rustwide/target/debug/deps/libactix_web-684f06a4d4af78c3.rmeta --extern base64=/opt/rustwide/target/debug/deps/libbase64-0d0fd105ac9f3d11.rmeta --extern docopt=/opt/rustwide/target/debug/deps/libdocopt-8130b39f8fd5e1bd.rmeta --extern env_logger=/opt/rustwide/target/debug/deps/libenv_logger-b7cc8f23c2f4cdbc.rmeta --extern error=/opt/rustwide/target/debug/deps/liberror-0c2e3fa19c3d75a3.rmeta --extern futures=/opt/rustwide/target/debug/deps/libfutures-59ccd87bc3e8590d.rmeta --extern futures_cpupool=/opt/rustwide/target/debug/deps/libfutures_cpupool-a4842ccf0a153202.rmeta --extern hyper=/opt/rustwide/target/debug/deps/libhyper-eb94af4d41f707b6.rmeta --extern iron=/opt/rustwide/target/debug/deps/libiron-b9765e43907b0300.rmeta --extern log=/opt/rustwide/target/debug/deps/liblog-4f27ce0b1ce6a5e9.rmeta --extern markdown=/opt/rustwide/target/debug/deps/libmarkdown-2a8df5a0e723753c.rmeta --extern params=/opt/rustwide/target/debug/deps/libparams-1f15f7374e6f8726.rmeta --extern rand=/opt/rustwide/target/debug/deps/librand-2c10afc7c12f08d4.rmeta --extern regex=/opt/rustwide/target/debug/deps/libregex-b3dd370cf76e7b37.rmeta --extern router=/opt/rustwide/target/debug/deps/librouter-9b668a9c15c51faa.rmeta --extern crypto=/opt/rustwide/target/debug/deps/libcrypto-373bdfd09c88172d.rmeta --extern serde=/opt/rustwide/target/debug/deps/libserde-cdb65b73d6f3ca91.rmeta --extern serde_derive=/opt/rustwide/target/debug/deps/libserde_derive-aca96bc8cdff439d.so --extern serde_json=/opt/rustwide/target/debug/deps/libserde_json-323252cf62e178cc.rmeta --extern time=/opt/rustwide/target/debug/deps/libtime-80bb9241c15b0c35.rmeta --extern tokio_core=/opt/rustwide/target/debug/deps/libtokio_core-47cbb64139d38d3c.rmeta --extern tokio_io=/opt/rustwide/target/debug/deps/libtokio_io-afd69116abb23613.rmeta --extern uuid=/opt/rustwide/target/debug/deps/libuuid-5f13fd260bd45138.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" "af9e43bc210a30e76bf3dca7ed2026dd71d28460e10ca16bead5c02e43540d53", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "af9e43bc210a30e76bf3dca7ed2026dd71d28460e10ca16bead5c02e43540d53", kill_on_drop: false }`
[INFO] [stdout] af9e43bc210a30e76bf3dca7ed2026dd71d28460e10ca16bead5c02e43540d53