[INFO] cloning repository https://github.com/gilcu2/hello_cargo
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/gilcu2/hello_cargo" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fgilcu2%2Fhello_cargo", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fgilcu2%2Fhello_cargo'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] e6a417b071622947dab633ba53d70b96ebb40850
[INFO] documenting gilcu2/hello_cargo 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%2Fgilcu2%2Fhello_cargo" "/workspace/builds/worker-9/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-9/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/gilcu2/hello_cargo 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/gilcu2/hello_cargo
[INFO] finished tweaking git repo https://github.com/gilcu2/hello_cargo
[INFO] tweaked toml for git repo https://github.com/gilcu2/hello_cargo written to /workspace/builds/worker-9/source/Cargo.toml
[INFO] crate git repo https://github.com/gilcu2/hello_cargo 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] [stderr]     Blocking waiting for file lock on package cache
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-9/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-9/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] [stdout] 634512cd6a5777764a6c076816a380739730cffc0f553f01284c67701184471e
[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" "634512cd6a5777764a6c076816a380739730cffc0f553f01284c67701184471e", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "634512cd6a5777764a6c076816a380739730cffc0f553f01284c67701184471e", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "634512cd6a5777764a6c076816a380739730cffc0f553f01284c67701184471e", kill_on_drop: false }`
[INFO] [stdout] 634512cd6a5777764a6c076816a380739730cffc0f553f01284c67701184471e
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-9/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-9/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] e262de6b06e46ce6440821c02ec3f032d154d9ec7fe3906f6a1543f21f1de848
[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" "e262de6b06e46ce6440821c02ec3f032d154d9ec7fe3906f6a1543f21f1de848", kill_on_drop: false }`
[INFO] [stderr]    Compiling libc v0.2.53
[INFO] [stderr]    Compiling syn v0.15.33
[INFO] [stderr]    Compiling cc v1.0.36
[INFO] [stderr]    Compiling num-bigint v0.2.2
[INFO] [stderr]    Compiling matrixmultiply v0.1.15
[INFO] [stderr]    Compiling bitflags v1.0.5
[INFO] [stderr]    Compiling serde v1.0.93
[INFO] [stderr]    Compiling num-rational v0.2.1
[INFO] [stderr]    Compiling num-complex v0.2.1
[INFO] [stderr]     Checking crossbeam v0.2.12
[INFO] [stderr]     Checking tokio-sync v0.1.5
[INFO] [stderr]    Compiling backtrace v0.3.15
[INFO] [stderr]     Checking bit-set v0.5.1
[INFO] [stderr]    Compiling rustlearn v0.5.0
[INFO] [stderr]     Checking crossbeam-channel v0.3.8
[INFO] [stderr]     Checking crossbeam-epoch v0.7.1
[INFO] [stderr]     Checking vpsearch v1.3.5
[INFO] [stderr]     Checking ordered_iter v0.1.1
[INFO] [stderr]     Checking vectors v0.3.0
[INFO] [stderr]     Checking crossbeam-deque v0.7.1
[INFO] [stderr]     Checking rulinalg v0.3.7
[INFO] [stderr]     Checking iovec v0.1.2
[INFO] [stderr]     Checking rand_os v0.1.3
[INFO] [stderr]     Checking num_cpus v1.10.0
[INFO] [stderr]     Checking net2 v0.2.33
[INFO] [stderr]     Checking rand v0.4.6
[INFO] [stderr]     Checking socket2 v0.3.8
[INFO] [stderr]     Checking rand v0.5.6
[INFO] [stderr]     Checking signal-hook-registry v1.0.1
[INFO] [stderr]     Checking hostname v0.1.5
[INFO] [stderr]     Checking resolv-conf v0.6.2
[INFO] [stderr]     Checking bytes v0.4.12
[INFO] [stderr]     Checking rand v0.6.5
[INFO] [stderr]     Checking signal-hook v0.1.9
[INFO] [stderr]    Compiling backtrace-sys v0.1.28
[INFO] [stderr]     Checking mio v0.6.16
[INFO] [stderr]     Checking rand v0.3.23
[INFO] [stderr]     Checking tokio-io v0.1.12
[INFO] [stderr]     Checking mio-uds v0.6.7
[INFO] [stderr]     Checking optimization v0.1.0
[INFO] [stderr]     Checking rusty-machine v0.5.4
[INFO] [stderr]     Checking parking_lot_core v0.4.0
[INFO] [stderr]     Checking tokio-threadpool v0.1.14
[INFO] [stderr]     Checking uuid v0.7.4
[INFO] [stderr]     Checking num v0.2.0
[INFO] [stderr]     Checking tokio-codec v0.1.1
[INFO] [stderr]     Checking tokio-fs v0.1.6
[INFO] [stderr]     Checking parking_lot v0.7.1
[INFO] [stderr]     Checking tokio-reactor v0.1.9
[INFO] [stderr]     Checking tokio-udp v0.1.3
[INFO] [stderr]     Checking tokio-tcp v0.1.3
[INFO] [stderr]     Checking tokio-uds v0.2.5
[INFO] [stderr]     Checking tokio-signal v0.2.7
[INFO] [stderr]     Checking tokio v0.1.19
[INFO] [stderr]    Compiling synstructure v0.10.1
[INFO] [stderr]    Compiling failure_derive v0.1.5
[INFO] [stderr]    Compiling serde_derive v1.0.93
[INFO] [stderr]    Compiling actix_derive v0.3.2
[INFO] [stderr]     Checking failure v0.1.5
[INFO] [stderr]     Checking trust-dns-proto v0.6.3
[INFO] [stderr]     Checking trust-dns-proto v0.5.0
[INFO] [stderr]     Checking trust-dns-resolver v0.10.3
[INFO] [stderr]     Checking actix v0.7.9
[INFO] [stderr]     Checking hello_cargo v0.1.0 (/opt/rustwide/workdir)
[INFO] [stderr]  Documenting hello_cargo v0.1.0 (/opt/rustwide/workdir)
[INFO] [stderr] error: Could not document `hello_cargo`.
[INFO] [stderr] 
[INFO] [stderr] Caused by:
[INFO] [stderr]   process didn't exit successfully: `rustdoc --edition=2018 --crate-type bin --crate-name interrogation_operator src/bin/interrogation_operator.rs -o /opt/rustwide/target/doc --error-format=json --json=diagnostic-rendered-ansi --document-private-items -L dependency=/opt/rustwide/target/debug/deps --extern actix=/opt/rustwide/target/debug/deps/libactix-328c1436113151e9.rmeta --extern futures=/opt/rustwide/target/debug/deps/libfutures-f54c58980fb368c6.rmeta --extern hello_cargo=/opt/rustwide/target/debug/deps/libhello_cargo-f1ad8a54480cc05c.rmeta --extern num=/opt/rustwide/target/debug/deps/libnum-d9fb91e0cbd155bb.rmeta --extern optimization=/opt/rustwide/target/debug/deps/liboptimization-4d2af0d834bc559f.rmeta --extern rand=/opt/rustwide/target/debug/deps/librand-4f5e38498d544328.rmeta --extern regex=/opt/rustwide/target/debug/deps/libregex-983dc198e77ecf70.rmeta --extern rustlearn=/opt/rustwide/target/debug/deps/librustlearn-f09b89afd3ded80f.rmeta --extern rusty_machine=/opt/rustwide/target/debug/deps/librusty_machine-1db2eab3512a3f77.rmeta --extern vectors=/opt/rustwide/target/debug/deps/libvectors-bf50db273823b07c.rmeta --extern vpsearch=/opt/rustwide/target/debug/deps/libvpsearch-9cdade997913912f.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" "e262de6b06e46ce6440821c02ec3f032d154d9ec7fe3906f6a1543f21f1de848", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "e262de6b06e46ce6440821c02ec3f032d154d9ec7fe3906f6a1543f21f1de848", kill_on_drop: false }`
[INFO] [stdout] e262de6b06e46ce6440821c02ec3f032d154d9ec7fe3906f6a1543f21f1de848