[INFO] cloning repository https://github.com/dtumad/project-euler-practice
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/dtumad/project-euler-practice" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fdtumad%2Fproject-euler-practice", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fdtumad%2Fproject-euler-practice'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] e68a5cbfe4b9a5370cb34f9153d5b88be7620da6
[INFO] documenting dtumad/project-euler-practice against beta-2020-10-09 for beta-1.48-rustdoc-1
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fdtumad%2Fproject-euler-practice" "/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/dtumad/project-euler-practice on toolchain beta-2020-10-09
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+beta-2020-10-09" "read-manifest" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/dtumad/project-euler-practice
[INFO] finished tweaking git repo https://github.com/dtumad/project-euler-practice
[INFO] tweaked toml for git repo https://github.com/dtumad/project-euler-practice written to /workspace/builds/worker-6/source/Cargo.toml
[INFO] crate git repo https://github.com/dtumad/project-euler-practice already has a lockfile, it will not be regenerated
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+beta-2020-10-09" "fetch" "--locked" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[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" "+beta-2020-10-09" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 03aed50a5e9eac76353f36b016ef094a71c86ea486564a05114e3c9cf5250630
[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" "03aed50a5e9eac76353f36b016ef094a71c86ea486564a05114e3c9cf5250630", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "03aed50a5e9eac76353f36b016ef094a71c86ea486564a05114e3c9cf5250630", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "03aed50a5e9eac76353f36b016ef094a71c86ea486564a05114e3c9cf5250630", kill_on_drop: false }`
[INFO] [stdout] 03aed50a5e9eac76353f36b016ef094a71c86ea486564a05114e3c9cf5250630
[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" "+beta-2020-10-09" "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] 1c71e5a54419a11d01d6acf71bb74e40cb8018fd65ad49febd109e71d847a69b
[INFO] running `Command { std: "docker" "start" "-a" "1c71e5a54419a11d01d6acf71bb74e40cb8018fd65ad49febd109e71d847a69b", kill_on_drop: false }`
[INFO] [stderr]    Compiling autocfg v0.1.5
[INFO] [stderr]    Compiling rayon-core v1.7.0
[INFO] [stderr]    Compiling num-bigint v0.2.2
[INFO] [stderr]     Checking either v1.5.2
[INFO] [stderr]    Compiling memoffset v0.5.1
[INFO] [stderr]     Checking crossbeam-utils v0.7.2
[INFO] [stderr]     Checking num_cpus v1.10.1
[INFO] [stderr]     Checking itertools v0.7.11
[INFO] [stderr]     Checking crossbeam-queue v0.2.1
[INFO] [stderr]    Compiling num-traits v0.2.8
[INFO] [stderr]    Compiling num-integer v0.1.41
[INFO] [stderr]     Checking crossbeam-epoch v0.8.2
[INFO] [stderr]     Checking crossbeam-deque v0.7.3
[INFO] [stderr]     Checking rayon v1.3.0
[INFO] [stderr]     Checking project-euler-practice v0.1.0 (/opt/rustwide/workdir)
[INFO] [stderr]  Documenting project-euler-practice v0.1.0 (/opt/rustwide/workdir)
[INFO] [stderr] error: could not document `project-euler-practice`
[INFO] [stderr] 
[INFO] [stderr] Caused by:
[INFO] [stderr]   process didn't exit successfully: `rustdoc --edition=2018 --crate-type bin --crate-name p54 src/bin/p54.rs -o /opt/rustwide/target/doc --error-format=json --json=diagnostic-rendered-ansi --document-private-items -L dependency=/opt/rustwide/target/debug/deps --extern itertools=/opt/rustwide/target/debug/deps/libitertools-219cf06fc9cc159f.rmeta --extern num_bigint=/opt/rustwide/target/debug/deps/libnum_bigint-87b184c3db0b4a65.rmeta --extern num_traits=/opt/rustwide/target/debug/deps/libnum_traits-a3763c5ead6d30fa.rmeta --extern project_euler_practice=/opt/rustwide/target/debug/deps/libproject_euler_practice-4726baf926f8bc0d.rmeta --extern rayon=/opt/rustwide/target/debug/deps/librayon-d433ef7a6bd4ac80.rmeta --cap-lints=warn --crate-version 0.1.0` (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" "1c71e5a54419a11d01d6acf71bb74e40cb8018fd65ad49febd109e71d847a69b", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "1c71e5a54419a11d01d6acf71bb74e40cb8018fd65ad49febd109e71d847a69b", kill_on_drop: false }`
[INFO] [stdout] 1c71e5a54419a11d01d6acf71bb74e40cb8018fd65ad49febd109e71d847a69b
