[INFO] fetching crate chan-signal 0.3.3...
[INFO] documenting chan-signal-0.3.3 against 1.47.0 for beta-1.48-rustdoc-1
[INFO] extracting crate chan-signal 0.3.3 into /workspace/builds/worker-9/source
[INFO] validating manifest of crates.io crate chan-signal 0.3.3 on toolchain 1.47.0
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+1.47.0" "read-manifest" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] started tweaking crates.io crate chan-signal 0.3.3
[INFO] finished tweaking crates.io crate chan-signal 0.3.3
[INFO] tweaked toml for crates.io crate chan-signal 0.3.3 written to /workspace/builds/worker-9/source/Cargo.toml
[INFO] crate crates.io crate chan-signal 0.3.3 already has a lockfile, it will not be regenerated
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+1.47.0" "fetch" "--locked" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded chan v0.1.18
[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" "+1.47.0" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 4ada4067ecf61e2e446adf360c0b7218f6192826b2d918c5f4033622608d881f
[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" "4ada4067ecf61e2e446adf360c0b7218f6192826b2d918c5f4033622608d881f", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "4ada4067ecf61e2e446adf360c0b7218f6192826b2d918c5f4033622608d881f", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "4ada4067ecf61e2e446adf360c0b7218f6192826b2d918c5f4033622608d881f", kill_on_drop: false }`
[INFO] [stdout] 4ada4067ecf61e2e446adf360c0b7218f6192826b2d918c5f4033622608d881f
[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" "+1.47.0" "doc" "--frozen" "--no-deps" "--document-private-items" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 3d074767436f5cc0f6845822abdfc0f296d16791084fc436385b46da961e58fe
[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" "3d074767436f5cc0f6845822abdfc0f296d16791084fc436385b46da961e58fe", kill_on_drop: false }`
[INFO] [stderr]     Checking libc v0.2.17
[INFO] [stderr]     Checking bit-vec v0.4.3
[INFO] [stderr]     Checking bit-set v0.4.0
[INFO] [stderr]     Checking rand v0.3.14
[INFO] [stderr]     Checking chan v0.1.18
[INFO] [stderr]  Documenting chan-signal v0.3.3 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 2.56s
[INFO] running `Command { std: "docker" "inspect" "3d074767436f5cc0f6845822abdfc0f296d16791084fc436385b46da961e58fe", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "3d074767436f5cc0f6845822abdfc0f296d16791084fc436385b46da961e58fe", kill_on_drop: false }`
[INFO] [stdout] 3d074767436f5cc0f6845822abdfc0f296d16791084fc436385b46da961e58fe
