[INFO] cloning repository https://github.com/qqdog1/rust-test
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/qqdog1/rust-test" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fqqdog1%2Frust-test", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fqqdog1%2Frust-test'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 2fff1baf3f34b4caa84c906b5cd751d90cfe84cf
[INFO] documenting qqdog1/rust-test 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%2Fqqdog1%2Frust-test" "/workspace/builds/worker-4/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-4/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/qqdog1/rust-test 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/qqdog1/rust-test
[INFO] finished tweaking git repo https://github.com/qqdog1/rust-test
[INFO] tweaked toml for git repo https://github.com/qqdog1/rust-test written to /workspace/builds/worker-4/source/Cargo.toml
[INFO] crate git repo https://github.com/qqdog1/rust-test already has a lockfile, it will not be regenerated
[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]  Downloading crates ...
[INFO] [stderr]   Downloaded log4rs v0.11.0
[INFO] [stderr]   Downloaded serde-value v0.6.0
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4/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] 6ac1d4fbb034fa36bdc027533ba73805ecde7ccf8f20058a0245eabea2f0bd52
[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" "6ac1d4fbb034fa36bdc027533ba73805ecde7ccf8f20058a0245eabea2f0bd52", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "6ac1d4fbb034fa36bdc027533ba73805ecde7ccf8f20058a0245eabea2f0bd52", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "6ac1d4fbb034fa36bdc027533ba73805ecde7ccf8f20058a0245eabea2f0bd52", kill_on_drop: false }`
[INFO] [stdout] 6ac1d4fbb034fa36bdc027533ba73805ecde7ccf8f20058a0245eabea2f0bd52
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4/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] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] [stdout] 3ba7fe81648b872bc007ef000135bbecb1751eecddcfed679a5baa57ba053e13
[INFO] running `Command { std: "docker" "start" "-a" "3ba7fe81648b872bc007ef000135bbecb1751eecddcfed679a5baa57ba053e13", kill_on_drop: false }`
[INFO] [stderr]    Compiling serde v1.0.105
[INFO] [stderr]    Compiling proc-macro2 v1.0.9
[INFO] [stderr]    Compiling ryu v1.0.3
[INFO] [stderr]     Checking smallvec v1.2.0
[INFO] [stderr]     Checking arc-swap v0.4.5
[INFO] [stderr]     Checking log-mdc v0.1.0
[INFO] [stderr]    Compiling num-traits v0.2.11
[INFO] [stderr]     Checking unsafe-any v0.4.2
[INFO] [stderr]     Checking lock_api v0.3.3
[INFO] [stderr]     Checking thread-id v3.3.0
[INFO] [stderr]     Checking flate2 v1.0.14
[INFO] [stderr]     Checking typemap v0.3.3
[INFO] [stderr]     Checking parking_lot_core v0.7.0
[INFO] [stderr]     Checking parking_lot v0.10.0
[INFO] [stderr]    Compiling quote v1.0.3
[INFO] [stderr]    Compiling syn v1.0.17
[INFO] [stderr]     Checking ordered-float v1.0.2
[INFO] [stderr]     Checking num-integer v0.1.42
[INFO] [stderr]     Checking chrono v0.4.11
[INFO] [stderr]     Checking serde-value v0.6.0
[INFO] [stderr]     Checking serde_json v1.0.48
[INFO] [stderr]     Checking serde_yaml v0.8.11
[INFO] [stderr]     Checking log v0.4.8
[INFO] [stderr]    Compiling serde_derive v1.0.105
[INFO] [stderr]     Checking log4rs v0.11.0
[INFO] [stderr]  Documenting rust-test v0.1.0 (/opt/rustwide/workdir)
[INFO] [stderr] error: Could not document `rust-test`.
[INFO] [stderr] 
[INFO] [stderr] Caused by:
[INFO] [stderr]   process didn't exit successfully: `rustdoc --edition=2018 --crate-type bin --crate-name file_log_test src/file_log_test.rs -o /opt/rustwide/target/doc --error-format=json --json=diagnostic-rendered-ansi --document-private-items -L dependency=/opt/rustwide/target/debug/deps --extern log=/opt/rustwide/target/debug/deps/liblog-b0b8d38cc3413cd1.rmeta --extern log4rs=/opt/rustwide/target/debug/deps/liblog4rs-390bb293f6bd2479.rmeta --extern rand=/opt/rustwide/target/debug/deps/librand-d14fdc8735966214.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" "3ba7fe81648b872bc007ef000135bbecb1751eecddcfed679a5baa57ba053e13", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "3ba7fe81648b872bc007ef000135bbecb1751eecddcfed679a5baa57ba053e13", kill_on_drop: false }`
[INFO] [stdout] 3ba7fe81648b872bc007ef000135bbecb1751eecddcfed679a5baa57ba053e13