[INFO] fetching crate rtdlib 1.6.3...
[INFO] documenting rtdlib-1.6.3 against beta-2020-08-29 for beta-1.47-rustdoc-1
[INFO] extracting crate rtdlib 1.6.3 into /workspace/builds/worker-0/source
[INFO] validating manifest of crates.io crate rtdlib 1.6.3 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 crates.io crate rtdlib 1.6.3
[INFO] finished tweaking crates.io crate rtdlib 1.6.3
[INFO] tweaked toml for crates.io crate rtdlib 1.6.3 written to /workspace/builds/worker-0/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 rtdlib-sys v0.1.0
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-0/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-0/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] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] [stdout] f4ccb9f29104254ca23785fe3a9c04e978c435f682d9760aa180547fa9bc0e3e
[INFO] running `Command { std: "docker" "start" "-a" "f4ccb9f29104254ca23785fe3a9c04e978c435f682d9760aa180547fa9bc0e3e", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "f4ccb9f29104254ca23785fe3a9c04e978c435f682d9760aa180547fa9bc0e3e", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "f4ccb9f29104254ca23785fe3a9c04e978c435f682d9760aa180547fa9bc0e3e", kill_on_drop: false }`
[INFO] [stdout] f4ccb9f29104254ca23785fe3a9c04e978c435f682d9760aa180547fa9bc0e3e
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-0/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-0/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] adada6e9a0e2c59819c3a0a81fb60043243e4b4831c917257031cb03c01cc3e1
[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" "adada6e9a0e2c59819c3a0a81fb60043243e4b4831c917257031cb03c01cc3e1", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]  Documenting rtdlib v1.6.3 (/opt/rustwide/workdir)
[INFO] [stderr] error: Could not document `rtdlib`.
[INFO] [stderr] 
[INFO] [stderr] Caused by:
[INFO] [stderr]   process didn't exit successfully: `rustdoc --edition=2018 --crate-type lib --crate-name rtdlib src/lib.rs -o /opt/rustwide/target/doc --cfg 'feature="default"' --error-format=json --json=diagnostic-rendered-ansi --document-private-items -L dependency=/opt/rustwide/target/debug/deps --extern libc=/opt/rustwide/target/debug/deps/liblibc-b01e5f49cd1b74e8.rmeta --extern serde=/opt/rustwide/target/debug/deps/libserde-ec5e695d7e4b5284.rmeta --extern serde_derive=/opt/rustwide/target/debug/deps/libserde_derive-e14ca5de376ec3cc.so --extern serde_json=/opt/rustwide/target/debug/deps/libserde_json-c4ec997ff5337c19.rmeta --cap-lints=warn --crate-version 1.6.3` (signal: 9, SIGKILL: kill)
[INFO] running `Command { std: "docker" "inspect" "adada6e9a0e2c59819c3a0a81fb60043243e4b4831c917257031cb03c01cc3e1", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "adada6e9a0e2c59819c3a0a81fb60043243e4b4831c917257031cb03c01cc3e1", kill_on_drop: false }`
[INFO] [stdout] adada6e9a0e2c59819c3a0a81fb60043243e4b4831c917257031cb03c01cc3e1