[INFO] cloning repository https://github.com/brandonpollack23/sarekt
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/brandonpollack23/sarekt" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fbrandonpollack23%2Fsarekt", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fbrandonpollack23%2Fsarekt'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] c757cb300250edf76d8acaefbe1fe9c802132d2b
[INFO] documenting brandonpollack23/sarekt against beta-2020-08-29 for beta-1.47-rustdoc-1
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fbrandonpollack23%2Fsarekt" "/workspace/builds/worker-13/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-13/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/brandonpollack23/sarekt 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 git repo https://github.com/brandonpollack23/sarekt
[INFO] removed 0 missing examples
[INFO] finished tweaking git repo https://github.com/brandonpollack23/sarekt
[INFO] tweaked toml for git repo https://github.com/brandonpollack23/sarekt written to /workspace/builds/worker-13/source/Cargo.toml
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+beta-2020-08-29" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update", kill_on_drop: false }`
[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]  Downloading crates ...
[INFO] [stderr]   Downloaded slotmap v0.4.0
[INFO] [stderr]   Downloaded wide v0.4.6
[INFO] [stderr]   Downloaded vk-shader-macros-impl v0.2.6
[INFO] [stderr]   Downloaded ash v0.30.0
[INFO] [stderr]   Downloaded safe-transmute v0.11.0
[INFO] [stderr]   Downloaded simple_logger v1.9.0
[INFO] [stderr]   Downloaded ultraviolet v0.4.6
[INFO] [stderr]   Downloaded vk-mem v0.2.2
[INFO] [stderr]   Downloaded winit v0.21.0
[INFO] [stderr]   Downloaded wavefront_obj v7.0.0
[INFO] [stderr]   Downloaded vk-shader-macros v0.2.6
[INFO] [stderr]   Downloaded ash-window v0.3.0
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-13/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-13/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] 585104a8ec350d2da733a4887b882fdd62c6bdc141490d3c575ca14b4b701fed
[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" "585104a8ec350d2da733a4887b882fdd62c6bdc141490d3c575ca14b4b701fed", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "585104a8ec350d2da733a4887b882fdd62c6bdc141490d3c575ca14b4b701fed", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "585104a8ec350d2da733a4887b882fdd62c6bdc141490d3c575ca14b4b701fed", kill_on_drop: false }`
[INFO] [stdout] 585104a8ec350d2da733a4887b882fdd62c6bdc141490d3c575ca14b4b701fed
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-13/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-13/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] [stdout] ef187a7bd7eb2ea2be5337aa3c230b5d134effa0c29bf35b7cf1ec8f7e879c59
[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" "ef187a7bd7eb2ea2be5337aa3c230b5d134effa0c29bf35b7cf1ec8f7e879c59", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]    Compiling wide v0.4.6
[INFO] [stderr]     Checking slotmap v0.4.0
[INFO] [stderr]    Compiling vk-mem v0.2.2
[INFO] [stderr]    Compiling shaderc-sys v0.6.2
[INFO] [stderr]     Checking ash v0.30.0
[INFO] [stderr]    Compiling darling_core v0.10.2
[INFO] [stderr]     Checking ultraviolet v0.4.6
[INFO] [stderr] error: could not compile `darling_core`.
[INFO] [stderr] 
[INFO] [stderr] Caused by:
[INFO] [stderr]   process didn't exit successfully: `rustc --crate-name darling_core /opt/rustwide/cargo-home/registry/src/github.com-1ecc6299db9ec823/darling_core-0.10.2/src/lib.rs --error-format=json --json=diagnostic-rendered-ansi,artifacts --crate-type lib --emit=dep-info,metadata,link -Cembed-bitcode=no -C debuginfo=2 --cfg 'feature="strsim"' --cfg 'feature="suggestions"' -C metadata=c7c0da934f63bc15 -C extra-filename=-c7c0da934f63bc15 --out-dir /opt/rustwide/target/debug/deps -L dependency=/opt/rustwide/target/debug/deps --extern fnv=/opt/rustwide/target/debug/deps/libfnv-c2227cfbdd7b9572.rmeta --extern ident_case=/opt/rustwide/target/debug/deps/libident_case-f044afbbc3ed8064.rmeta --extern proc_macro2=/opt/rustwide/target/debug/deps/libproc_macro2-71c5aa24984e0547.rmeta --extern quote=/opt/rustwide/target/debug/deps/libquote-86659819dd43cd20.rmeta --extern strsim=/opt/rustwide/target/debug/deps/libstrsim-bc70c22d5dd4f0b5.rmeta --extern syn=/opt/rustwide/target/debug/deps/libsyn-b74a3cd011d654cd.rmeta --cap-lints allow` (signal: 9, SIGKILL: kill)
[INFO] [stderr] warning: build failed, waiting for other jobs to finish...
[INFO] [stderr] The following warnings were emitted during compilation:
[INFO] [stderr] 
[INFO] [stderr] warning: Checking for system installed libraries.  Use --features = build-from-source to disable this behavior
[INFO] [stderr] warning: System installed library not found.  Falling back to build from source
[INFO] [stderr] 
[INFO] [stderr] error: build failed
[INFO] running `Command { std: "docker" "inspect" "ef187a7bd7eb2ea2be5337aa3c230b5d134effa0c29bf35b7cf1ec8f7e879c59", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "ef187a7bd7eb2ea2be5337aa3c230b5d134effa0c29bf35b7cf1ec8f7e879c59", kill_on_drop: false }`
[INFO] [stdout] ef187a7bd7eb2ea2be5337aa3c230b5d134effa0c29bf35b7cf1ec8f7e879c59