[INFO] fetching crate stage 0.2.0...
[INFO] documenting stage-0.2.0 against 1.47.0 for beta-1.48-rustdoc-1
[INFO] extracting crate stage 0.2.0 into /workspace/builds/worker-9/source
[INFO] validating manifest of crates.io crate stage 0.2.0 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 stage 0.2.0
[INFO] finished tweaking crates.io crate stage 0.2.0
[INFO] tweaked toml for crates.io crate stage 0.2.0 written to /workspace/builds/worker-9/source/Cargo.toml
[INFO] crate crates.io crate stage 0.2.0 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]     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" "+1.47.0" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 245653f7c50c18fb9dd1837d0189a2e907add7b654939a7ce9a46af72d7ecdcd
[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" "245653f7c50c18fb9dd1837d0189a2e907add7b654939a7ce9a46af72d7ecdcd", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "245653f7c50c18fb9dd1837d0189a2e907add7b654939a7ce9a46af72d7ecdcd", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "245653f7c50c18fb9dd1837d0189a2e907add7b654939a7ce9a46af72d7ecdcd", kill_on_drop: false }`
[INFO] [stdout] 245653f7c50c18fb9dd1837d0189a2e907add7b654939a7ce9a46af72d7ecdcd
[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] 793128394c3f0fb1cf66bf2a0fdf335b47b5ba63d818c0aa9521e85d337bab4e
[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" "793128394c3f0fb1cf66bf2a0fdf335b47b5ba63d818c0aa9521e85d337bab4e", kill_on_drop: false }`
[INFO] [stderr]     Checking tracing-core v0.1.10
[INFO] [stderr]    Compiling libc v0.2.67
[INFO] [stderr]     Checking mio v0.7.0
[INFO] [stderr]    Compiling syn v1.0.16
[INFO] [stderr]     Checking crossbeam-channel v0.4.2
[INFO] [stderr]    Compiling getrandom v0.1.14
[INFO] [stderr]    Compiling proc-macro-hack v0.5.11
[INFO] [stderr]    Compiling tracing-attributes v0.1.7
[INFO] [stderr]    Compiling futures-macro v0.3.4
[INFO] [stderr]    Compiling const-random-macro v0.1.8
[INFO] [stderr]     Checking tracing v0.1.13
[INFO] [stderr]     Checking const-random v0.1.8
[INFO] [stderr]     Checking ahash v0.3.2
[INFO] [stderr]     Checking dashmap v3.7.0
[INFO] [stderr]     Checking futures-util v0.3.4
[INFO] [stderr]     Checking futures-executor v0.3.4
[INFO] [stderr]     Checking futures v0.3.4
[INFO] [stderr]     Checking mirai v0.0.4
[INFO] [stderr]  Documenting stage v0.2.0 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 23.45s
[INFO] running `Command { std: "docker" "inspect" "793128394c3f0fb1cf66bf2a0fdf335b47b5ba63d818c0aa9521e85d337bab4e", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "793128394c3f0fb1cf66bf2a0fdf335b47b5ba63d818c0aa9521e85d337bab4e", kill_on_drop: false }`
[INFO] [stdout] 793128394c3f0fb1cf66bf2a0fdf335b47b5ba63d818c0aa9521e85d337bab4e
