[INFO] cloning repository https://github.com/way-cooler/way-cooler-bg
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/way-cooler/way-cooler-bg" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fway-cooler%2Fway-cooler-bg", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fway-cooler%2Fway-cooler-bg'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 9dde66b52f4f113ce8721a5b6ad4dd8e42049f1d
[INFO] documenting way-cooler/way-cooler-bg against master#c04832643d70479988a3ad9d92b63d9bc95e9c6d for pr-107291
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fway-cooler%2Fway-cooler-bg" "/workspace/builds/worker-7-tc1/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-7-tc1/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/way-cooler/way-cooler-bg on toolchain c04832643d70479988a3ad9d92b63d9bc95e9c6d
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+c04832643d70479988a3ad9d92b63d9bc95e9c6d" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/way-cooler/way-cooler-bg
[INFO] finished tweaking git repo https://github.com/way-cooler/way-cooler-bg
[INFO] tweaked toml for git repo https://github.com/way-cooler/way-cooler-bg written to /workspace/builds/worker-7-tc1/source/Cargo.toml
[INFO] crate git repo https://github.com/way-cooler/way-cooler-bg already has a lockfile, it will not be regenerated
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+c04832643d70479988a3ad9d92b63d9bc95e9c6d" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded way-cooler-client-helpers v0.1.0
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-tc1/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@sha256:542af8c9c691278ea8427c9f55ce1005b509eeebcbbcbc893145cd6832507671" "/opt/rustwide/cargo-home/bin/cargo" "+c04832643d70479988a3ad9d92b63d9bc95e9c6d" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 230276c82b24a5e55e10e972f245ecc639a85394cd4513af6095cdb6e3e499bc
[INFO] running `Command { std: "docker" "start" "-a" "230276c82b24a5e55e10e972f245ecc639a85394cd4513af6095cdb6e3e499bc", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "230276c82b24a5e55e10e972f245ecc639a85394cd4513af6095cdb6e3e499bc", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "230276c82b24a5e55e10e972f245ecc639a85394cd4513af6095cdb6e3e499bc", kill_on_drop: false }`
[INFO] [stdout] 230276c82b24a5e55e10e972f245ecc639a85394cd4513af6095cdb6e3e499bc
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-tc1/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" "RUSTFLAGS=--cap-lints=forbid" "-e" "RUSTDOCFLAGS=--cap-lints=forbid" "-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@sha256:542af8c9c691278ea8427c9f55ce1005b509eeebcbbcbc893145cd6832507671" "/opt/rustwide/cargo-home/bin/cargo" "+c04832643d70479988a3ad9d92b63d9bc95e9c6d" "doc" "--frozen" "--no-deps" "--document-private-items" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 10dc5d082d10629ae49d964a2262878366d7549350ba31c8bd4bace2a8f15095
[INFO] running `Command { std: "docker" "start" "-a" "10dc5d082d10629ae49d964a2262878366d7549350ba31c8bd4bace2a8f15095", kill_on_drop: false }`
[INFO] [stderr]     Checking libc v0.2.32
[INFO] [stderr]    Compiling siphasher v0.2.2
[INFO] [stderr]    Compiling num-traits v0.1.40
[INFO] [stderr]    Compiling serde v0.9.15
[INFO] [stderr]    Compiling dtoa v0.4.2
[INFO] [stderr]     Checking lazy_static v0.2.9
[INFO] [stderr]    Compiling itoa v0.3.4
[INFO] [stderr]    Compiling bitflags v0.9.1
[INFO] [stderr]    Compiling cc v1.0.0
[INFO] [stderr]    Compiling rayon-core v1.2.1
[INFO] [stderr]     Checking either v1.2.0
[INFO] [stderr]     Checking scopeguard v0.3.2
[INFO] [stderr]     Checking futures v0.1.16
[INFO] [stderr]     Checking rustc-serialize v0.3.24
[INFO] [stderr]     Checking color_quant v1.0.0
[INFO] [stderr]    Compiling xml-rs v0.6.1
[INFO] [stderr]     Checking coco v0.1.1
[INFO] [stderr]     Checking inflate v0.1.1
[INFO] [stderr]     Checking byteorder v1.1.0
[INFO] [stderr]    Compiling phf_shared v0.7.21
[INFO] [stderr]     Checking lzw v0.10.0
[INFO] [stderr]     Checking scoped_threadpool v0.1.8
[INFO] [stderr]    Compiling phf v0.7.21
[INFO] [stderr]     Checking strsim v0.6.0
[INFO] [stderr]     Checking vec_map v0.8.0
[INFO] [stderr]     Checking gif v0.9.2
[INFO] [stderr]     Checking byteorder v0.5.3
[INFO] [stderr]     Checking num-integer v0.1.35
[INFO] [stderr]     Checking enum_primitive v0.1.1
[INFO] [stderr]    Compiling rand v0.3.17
[INFO] [stderr]     Checking num_cpus v1.7.0
[INFO] [stderr]     Checking term_size v0.3.0
[INFO] [stderr]     Checking atty v0.2.3
[INFO] [stderr]     Checking textwrap v0.8.0
[INFO] [stderr]     Checking num-iter v0.1.34
[INFO] [stderr]     Checking clap v2.26.2
[INFO] [stderr]    Compiling miniz-sys v0.1.10
[INFO] [stderr]    Compiling wayland-scanner v0.9.10
[INFO] [stderr]     Checking tempfile v2.2.0
[INFO] [stderr]    Compiling phf_generator v0.7.21
[INFO] [stderr]    Compiling phf_codegen v0.7.21
[INFO] [stderr]    Compiling wayland-client v0.9.10
[INFO] [stderr]    Compiling wc-bg v0.3.0 (/opt/rustwide/workdir)
[INFO] [stderr]    Compiling target_build_utils v0.3.1
[INFO] [stderr]     Checking num-bigint v0.1.40
[INFO] [stderr]     Checking num-rational v0.1.39
[INFO] [stderr]     Checking rayon v0.8.2
[INFO] [stderr]    Compiling serde_json v0.9.10
[INFO] [stderr]     Checking jpeg-decoder v0.1.13
[INFO] [stderr]     Checking flate2 v0.2.20
[INFO] [stderr]     Checking png v0.5.2
[INFO] [stderr]     Checking image v0.10.4
[INFO] [stderr] error: could not compile `target_build_utils`
[INFO] [stderr] 
[INFO] [stderr] Caused by:
[INFO] [stderr]   process didn't exit successfully: `rustc --crate-name target_build_utils /opt/rustwide/cargo-home/registry/src/github.com-1ecc6299db9ec823/target_build_utils-0.3.1/src/lib.rs --error-format=json --json=diagnostic-rendered-ansi,artifacts,future-incompat --crate-type lib --emit=dep-info,metadata,link -C embed-bitcode=no -C debuginfo=2 --cfg 'feature="default"' --cfg 'feature="serde_json"' -C metadata=7076d28efc0da577 -C extra-filename=-7076d28efc0da577 --out-dir /opt/rustwide/target/debug/deps -L dependency=/opt/rustwide/target/debug/deps --extern phf=/opt/rustwide/target/debug/deps/libphf-5a086649b28d0e41.rmeta --extern serde_json=/opt/rustwide/target/debug/deps/libserde_json-bc85d4f78beaea9e.rmeta --cap-lints allow --cap-lints=forbid` (signal: 9, SIGKILL: kill)
[INFO] [stderr] warning: build failed, waiting for other jobs to finish...
[INFO] running `Command { std: "docker" "inspect" "10dc5d082d10629ae49d964a2262878366d7549350ba31c8bd4bace2a8f15095", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "10dc5d082d10629ae49d964a2262878366d7549350ba31c8bd4bace2a8f15095", kill_on_drop: false }`
[INFO] [stdout] 10dc5d082d10629ae49d964a2262878366d7549350ba31c8bd4bace2a8f15095