[INFO] cloning repository https://github.com/hhatto/wwup-in-rust
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/hhatto/wwup-in-rust" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fhhatto%2Fwwup-in-rust", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fhhatto%2Fwwup-in-rust'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 7ef78053e5a0447048fafc7824dd7adb64c60c12
[INFO] documenting hhatto/wwup-in-rust 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%2Fhhatto%2Fwwup-in-rust" "/workspace/builds/worker-6/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-6/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/hhatto/wwup-in-rust 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/hhatto/wwup-in-rust
[INFO] finished tweaking git repo https://github.com/hhatto/wwup-in-rust
[INFO] tweaked toml for git repo https://github.com/hhatto/wwup-in-rust written to /workspace/builds/worker-6/source/Cargo.toml
[INFO] crate git repo https://github.com/hhatto/wwup-in-rust 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-6/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-6/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] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] [stdout] fddec72b1bb8be2886919afff27fc7b4466cc2894c977306bbf2765984794889
[INFO] running `Command { std: "docker" "start" "-a" "fddec72b1bb8be2886919afff27fc7b4466cc2894c977306bbf2765984794889", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "fddec72b1bb8be2886919afff27fc7b4466cc2894c977306bbf2765984794889", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "fddec72b1bb8be2886919afff27fc7b4466cc2894c977306bbf2765984794889", kill_on_drop: false }`
[INFO] [stdout] fddec72b1bb8be2886919afff27fc7b4466cc2894c977306bbf2765984794889
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-6/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-6/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] [stdout] 802b10ae0aaf1ac66c145b069fd657dd2980b384144179c8f13d6ae686110aef
[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" "802b10ae0aaf1ac66c145b069fd657dd2980b384144179c8f13d6ae686110aef", kill_on_drop: false }`
[INFO] [stderr]     Checking bit-vec v0.4.3
[INFO] [stderr]     Checking bitflags v0.4.0
[INFO] [stderr]     Checking rand v0.3.15
[INFO] [stderr]     Checking nix v0.8.1
[INFO] [stderr]    Compiling nix v0.7.0
[INFO] [stderr]     Checking bit-set v0.4.0
[INFO] [stderr]     Checking chan v0.1.19
[INFO] [stderr]     Checking chan-signal v0.2.0
[INFO] [stderr]     Checking prctl v1.0.0
[INFO] [stderr]  Documenting wwup v0.1.0 (/opt/rustwide/workdir)
[INFO] [stderr] error: Could not document `wwup`.
[INFO] [stderr] 
[INFO] [stderr] Caused by:
[INFO] [stderr]   process didn't exit successfully: `rustdoc --crate-type bin --crate-name 18_daemon_processes src/18_daemon_processes.rs -o /opt/rustwide/target/doc --error-format=json --json=diagnostic-rendered-ansi --document-private-items -L dependency=/opt/rustwide/target/debug/deps --extern chan=/opt/rustwide/target/debug/deps/libchan-6b49162318eda213.rmeta --extern chan_signal=/opt/rustwide/target/debug/deps/libchan_signal-51140af4fa2597a8.rmeta --extern libc=/opt/rustwide/target/debug/deps/liblibc-7606665f5d5f35ff.rmeta --extern nix=/opt/rustwide/target/debug/deps/libnix-66f2d40e2ede72fd.rmeta --extern prctl=/opt/rustwide/target/debug/deps/libprctl-29cf8477537029de.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" "802b10ae0aaf1ac66c145b069fd657dd2980b384144179c8f13d6ae686110aef", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "802b10ae0aaf1ac66c145b069fd657dd2980b384144179c8f13d6ae686110aef", kill_on_drop: false }`
[INFO] [stdout] 802b10ae0aaf1ac66c145b069fd657dd2980b384144179c8f13d6ae686110aef