[INFO] fetching crate tracing-tokio 0.0.0...
[INFO] documenting tracing-tokio-0.0.0 against beta-2020-10-09 for beta-1.48-rustdoc-1
[INFO] extracting crate tracing-tokio 0.0.0 into /workspace/builds/worker-4/source
[INFO] validating manifest of crates.io crate tracing-tokio 0.0.0 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 crates.io crate tracing-tokio 0.0.0
[INFO] finished tweaking crates.io crate tracing-tokio 0.0.0
[INFO] tweaked toml for crates.io crate tracing-tokio 0.0.0 written to /workspace/builds/worker-4/source/Cargo.toml
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+beta-2020-10-09" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update", kill_on_drop: false }`
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+beta-2020-10-09" "fetch" "--locked" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[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-2020-10-09" "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] fa3b4b3af02681848c71c05e318da16d6eb2d51f311ef89a25cfbb49a8ce2a70
[INFO] running `Command { std: "docker" "start" "-a" "fa3b4b3af02681848c71c05e318da16d6eb2d51f311ef89a25cfbb49a8ce2a70", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "fa3b4b3af02681848c71c05e318da16d6eb2d51f311ef89a25cfbb49a8ce2a70", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "fa3b4b3af02681848c71c05e318da16d6eb2d51f311ef89a25cfbb49a8ce2a70", kill_on_drop: false }`
[INFO] [stdout] fa3b4b3af02681848c71c05e318da16d6eb2d51f311ef89a25cfbb49a8ce2a70
[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-2020-10-09" "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] 7d233164808bf300ca7e43ddb1629ab87864d2c7bdf414217e3c34bc9bceb737
[INFO] running `Command { std: "docker" "start" "-a" "7d233164808bf300ca7e43ddb1629ab87864d2c7bdf414217e3c34bc9bceb737", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]  Documenting tracing-tokio v0.0.0 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 1.82s
[INFO] running `Command { std: "docker" "inspect" "7d233164808bf300ca7e43ddb1629ab87864d2c7bdf414217e3c34bc9bceb737", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "7d233164808bf300ca7e43ddb1629ab87864d2c7bdf414217e3c34bc9bceb737", kill_on_drop: false }`
[INFO] [stdout] 7d233164808bf300ca7e43ddb1629ab87864d2c7bdf414217e3c34bc9bceb737
