[INFO] fetching crate ctron 0.2.0...
[INFO] documenting ctron-0.2.0 against 1.61.0 for beta-1.62-rustdoc-1
[INFO] extracting crate ctron 0.2.0 into /workspace/builds/worker-81/source
[INFO] validating manifest of crates.io crate ctron 0.2.0 on toolchain 1.61.0
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+1.61.0" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking crates.io crate ctron 0.2.0
[INFO] finished tweaking crates.io crate ctron 0.2.0
[INFO] tweaked toml for crates.io crate ctron 0.2.0 written to /workspace/builds/worker-81/source/Cargo.toml
[INFO] crate crates.io crate ctron 0.2.0 already has a lockfile, it will not be regenerated
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+1.61.0" "fetch" "--manifest-path" "Cargo.toml", 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]  Downloading crates ...
[INFO] [stderr]   Downloaded hermit-abi v0.1.16
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-81/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-81/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" "ghcr.io/rust-lang/crates-build-env/linux@sha256:d190cb871061d98bc6d0581d85cb2ecb09a0f8a142ba5463de30be9999fc3251" "/opt/rustwide/cargo-home/bin/cargo" "+1.61.0" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] e2c1161a2f28b25cb8670a0121a3c9ff6616717914fe286cd83f2ba26c5bb776
[INFO] running `Command { std: "docker" "start" "-a" "e2c1161a2f28b25cb8670a0121a3c9ff6616717914fe286cd83f2ba26c5bb776", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "e2c1161a2f28b25cb8670a0121a3c9ff6616717914fe286cd83f2ba26c5bb776", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "e2c1161a2f28b25cb8670a0121a3c9ff6616717914fe286cd83f2ba26c5bb776", kill_on_drop: false }`
[INFO] [stdout] e2c1161a2f28b25cb8670a0121a3c9ff6616717914fe286cd83f2ba26c5bb776
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-81/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-81/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" "ghcr.io/rust-lang/crates-build-env/linux@sha256:d190cb871061d98bc6d0581d85cb2ecb09a0f8a142ba5463de30be9999fc3251" "/opt/rustwide/cargo-home/bin/cargo" "+1.61.0" "doc" "--frozen" "--no-deps" "--document-private-items" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] ef96ae32fb002202b59fe3b3e96637592d554ca6983df9024d976a259451d4d8
[INFO] running `Command { std: "docker" "start" "-a" "ef96ae32fb002202b59fe3b3e96637592d554ca6983df9024d976a259451d4d8", kill_on_drop: false }`
[INFO] [stderr]    Compiling libc v0.2.77
[INFO] [stderr]     Checking atty v0.2.14
[INFO] [stderr]     Checking colored v2.0.0
[INFO] [stderr]  Documenting ctron v0.2.0 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 2.76s
[INFO] running `Command { std: "docker" "inspect" "ef96ae32fb002202b59fe3b3e96637592d554ca6983df9024d976a259451d4d8", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "ef96ae32fb002202b59fe3b3e96637592d554ca6983df9024d976a259451d4d8", kill_on_drop: false }`
[INFO] [stdout] ef96ae32fb002202b59fe3b3e96637592d554ca6983df9024d976a259451d4d8