[INFO] cloning repository https://github.com/tarkah/karaoke-rs
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/tarkah/karaoke-rs" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Ftarkah%2Fkaraoke-rs", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Ftarkah%2Fkaraoke-rs'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 0747427e6f2eb3a81482dbe3f7181cb5120feced
[INFO] documenting tarkah/karaoke-rs against 1.54.0 for beta-1.55-rustdoc-1
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Ftarkah%2Fkaraoke-rs" "/workspace/builds/worker-4/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-4/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/tarkah/karaoke-rs on toolchain 1.54.0
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+1.54.0" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/tarkah/karaoke-rs
[INFO] finished tweaking git repo https://github.com/tarkah/karaoke-rs
[INFO] tweaked toml for git repo https://github.com/tarkah/karaoke-rs written to /workspace/builds/worker-4/source/Cargo.toml
[INFO] crate git repo https://github.com/tarkah/karaoke-rs already has a lockfile, it will not be regenerated
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+1.54.0" "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] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4/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" "+1.54.0" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] f8765ce6607dc1311dea79815f8d6c36326ce91bee9408785abf687fdab1c250
[INFO] running `Command { std: "docker" "start" "-a" "f8765ce6607dc1311dea79815f8d6c36326ce91bee9408785abf687fdab1c250", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "f8765ce6607dc1311dea79815f8d6c36326ce91bee9408785abf687fdab1c250", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "f8765ce6607dc1311dea79815f8d6c36326ce91bee9408785abf687fdab1c250", kill_on_drop: false }`
[INFO] [stdout] f8765ce6607dc1311dea79815f8d6c36326ce91bee9408785abf687fdab1c250
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4/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" "+1.54.0" "doc" "--frozen" "--no-deps" "--document-private-items" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 7b98dd152a870f8ab62bddee06d6e98acab5a27e416b735378963d6ca76b8c0f
[INFO] running `Command { std: "docker" "start" "-a" "7b98dd152a870f8ab62bddee06d6e98acab5a27e416b735378963d6ca76b8c0f", kill_on_drop: false }`
[INFO] [stderr]    Compiling libc v0.2.66
[INFO] [stderr]    Compiling proc-macro2 v1.0.8
[INFO] [stderr]    Compiling syn v1.0.14
[INFO] [stderr]    Compiling syn v0.15.44
[INFO] [stderr]     Checking smallvec v1.2.0
[INFO] [stderr]    Compiling regex-syntax v0.6.14
[INFO] [stderr]     Checking arrayvec v0.5.1
[INFO] [stderr]    Compiling rayon-core v1.7.0
[INFO] [stderr]    Compiling strsim v0.7.0
[INFO] [stderr]     Checking downcast-rs v1.1.1
[INFO] [stderr]    Compiling fnv v1.0.6
[INFO] [stderr]    Compiling typenum v1.11.2
[INFO] [stderr]    Compiling same-file v1.0.6
[INFO] [stderr]    Compiling derive_builder v0.7.2
[INFO] [stderr]     Checking owning_ref v0.2.4
[INFO] [stderr]     Checking cdg v0.1.0
[INFO] [stderr]     Checking takeable-option v0.4.0
[INFO] [stderr]     Checking crossbeam v0.2.12
[INFO] [stderr]     Checking smallvec v0.3.4
[INFO] [stderr]    Compiling crossbeam-utils v0.7.0
[INFO] [stderr]     Checking tokio-sync v0.1.8
[INFO] [stderr]    Compiling libloading v0.5.2
[INFO] [stderr]    Compiling nom v4.2.3
[INFO] [stderr]    Compiling crossbeam-epoch v0.8.0
[INFO] [stderr]     Checking actix-service v0.4.2
[INFO] [stderr]    Compiling x11-dl v2.18.5
[INFO] [stderr]    Compiling num-rational v0.2.3
[INFO] [stderr]    Compiling hashbrown v0.6.3
[INFO] [stderr]     Checking miniz_oxide v0.3.6
[INFO] [stderr]    Compiling num-complex v0.2.4
[INFO] [stderr]    Compiling alsa-sys v0.1.2
[INFO] [stderr]    Compiling num-iter v0.1.40
[INFO] [stderr]    Compiling minimp3-sys v0.3.1
[INFO] [stderr]     Checking inflate v0.4.5
[INFO] [stderr]    Compiling thread_local v1.0.1
[INFO] [stderr]     Checking gif v0.10.3
[INFO] [stderr]    Compiling log v0.4.8
[INFO] [stderr]    Compiling walkdir v2.3.1
[INFO] [stderr]    Compiling syn v0.11.11
[INFO] [stderr]     Checking stb_truetype v0.3.1
[INFO] [stderr]     Checking deflate v0.7.20
[INFO] [stderr]    Compiling memoffset v0.5.3
[INFO] [stderr]     Checking log v0.3.9
[INFO] [stderr]     Checking unicode-normalization v0.1.12
[INFO] [stderr]    Compiling aho-corasick v0.7.8
[INFO] [stderr]    Compiling wayland-scanner v0.21.13
[INFO] [stderr]     Checking num-integer v0.1.42
[INFO] [stderr]     Checking approx v0.3.2
[INFO] [stderr]     Checking ordered-float v1.0.2
[INFO] [stderr]     Checking line_drawing v0.7.0
[INFO] [stderr]    Compiling gl_generator v0.13.1
[INFO] [stderr]    Compiling gl_generator v0.11.0
[INFO] [stderr]    Compiling mime_guess v2.0.1
[INFO] [stderr]     Checking mime v0.2.6
[INFO] [stderr]     Checking rusttype v0.8.2
[INFO] [stderr]     Checking dlib v0.4.1
[INFO] [stderr]     Checking png v0.15.3
[INFO] [stderr]     Checking wayland-sys v0.21.13
[INFO] [stderr]     Checking tokio-executor v0.1.10
[INFO] [stderr]     Checking crossbeam-queue v0.2.1
[INFO] [stderr]     Checking idna v0.1.5
[INFO] [stderr]     Checking idna v0.2.0
[INFO] [stderr]     Checking rusttype v0.7.9
[INFO] [stderr]    Compiling quote v1.0.2
[INFO] [stderr]     Checking iovec v0.1.4
[INFO] [stderr]     Checking num_cpus v1.12.0
[INFO] [stderr]     Checking parking_lot_core v0.6.2
[INFO] [stderr]     Checking net2 v0.2.33
[INFO] [stderr]     Checking rand_os v0.1.3
[INFO] [stderr]     Checking backtrace-sys v0.1.32
[INFO] [stderr]     Checking nix v0.14.1
[INFO] [stderr]     Checking time v0.1.42
[INFO] [stderr]     Checking getrandom v0.1.14
[INFO] [stderr]     Checking hostname v0.1.5
[INFO] [stderr]     Checking socket2 v0.3.11
[INFO] [stderr]     Checking signal-hook-registry v1.2.0
[INFO] [stderr]     Checking memmap v0.7.0
[INFO] [stderr]     Checking flate2 v1.0.13
[INFO] [stderr]     Checking raw-window-handle v0.3.3
[INFO] [stderr]     Checking rand v0.4.6
[INFO] [stderr]     Checking shared_library v0.1.9
[INFO] [stderr]     Checking atty v0.2.14
[INFO] [stderr]     Checking slice-deque v0.2.4
[INFO] [stderr]     Checking thread-id v3.3.0
[INFO] [stderr]     Checking dirs v1.0.5
[INFO] [stderr]     Checking alga v0.9.2
[INFO] [stderr]    Compiling glutin_glx_sys v0.1.6
[INFO] [stderr]    Compiling glutin_egl_sys v0.1.4
[INFO] [stderr]     Checking andrew v0.2.1
[INFO] [stderr]     Checking bytes v0.4.12
[INFO] [stderr]     Checking tokio-timer v0.2.13
[INFO] [stderr]     Checking tokio-current-thread v0.1.7
[INFO] [stderr]     Checking threadpool v1.7.1
[INFO] [stderr]     Checking parking_lot v0.9.0
[INFO] [stderr]     Checking resolv-conf v0.6.2
[INFO] [stderr]     Checking generic-array v0.12.3
[INFO] [stderr]     Checking backtrace v0.3.44
[INFO] [stderr]     Checking mio v0.6.21
[INFO] [stderr]     Checking clap v2.33.0
[INFO] [stderr]    Compiling glium v0.25.1
[INFO] [stderr]     Checking rand_core v0.5.1
[INFO] [stderr]     Checking cpal v0.8.2
[INFO] [stderr]     Checking rand v0.6.5
[INFO] [stderr]     Checking url v2.1.1
[INFO] [stderr]     Checking osmesa-sys v0.1.2
[INFO] [stderr]     Checking crossbeam-deque v0.7.2
[INFO] [stderr]     Checking minimp3 v0.3.3
[INFO] [stderr]     Checking chrono v0.4.10
[INFO] [stderr]     Checking rand_chacha v0.2.1
[INFO] [stderr] error: could not compile `regex-syntax`
[INFO] [stderr] 
[INFO] [stderr] Caused by:
[INFO] [stderr]   process didn't exit successfully: `rustc --crate-name regex_syntax /opt/rustwide/cargo-home/registry/src/github.com-1ecc6299db9ec823/regex-syntax-0.6.14/src/lib.rs --error-format=json --json=diagnostic-rendered-ansi,artifacts --crate-type lib --emit=dep-info,metadata,link -C embed-bitcode=no -C debuginfo=2 --cfg 'feature="unicode-age"' --cfg 'feature="unicode-bool"' --cfg 'feature="unicode-case"' --cfg 'feature="unicode-gencat"' --cfg 'feature="unicode-perl"' --cfg 'feature="unicode-script"' --cfg 'feature="unicode-segment"' -C metadata=2bc7e0416383d5e1 -C extra-filename=-2bc7e0416383d5e1 --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" "7b98dd152a870f8ab62bddee06d6e98acab5a27e416b735378963d6ca76b8c0f", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "7b98dd152a870f8ab62bddee06d6e98acab5a27e416b735378963d6ca76b8c0f", kill_on_drop: false }`
[INFO] [stdout] 7b98dd152a870f8ab62bddee06d6e98acab5a27e416b735378963d6ca76b8c0f
