[INFO] fetching crate ckb-capsule 0.6.0...
[INFO] documenting ckb-capsule-0.6.0 against 1.55.0 for beta-1.56-rustdoc-1
[INFO] extracting crate ckb-capsule 0.6.0 into /workspace/builds/worker-4/source
[INFO] validating manifest of crates.io crate ckb-capsule 0.6.0 on toolchain 1.55.0
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+1.55.0" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] removed /workspace/builds/worker-4/source/rust-toolchain
[INFO] started tweaking crates.io crate ckb-capsule 0.6.0
[INFO] finished tweaking crates.io crate ckb-capsule 0.6.0
[INFO] tweaked toml for crates.io crate ckb-capsule 0.6.0 written to /workspace/builds/worker-4/source/Cargo.toml
[INFO] crate crates.io crate ckb-capsule 0.6.0 already has a lockfile, it will not be regenerated
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+1.55.0" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
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[INFO] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded secp256k1 v0.20.1
[INFO] [stderr]   Downloaded sha2 v0.9.6
[INFO] [stderr]   Downloaded secp256k1-sys v0.4.0
[INFO] [stderr]   Downloaded ckb-testtool v0.6.0
[INFO] [stderr]   Downloaded tera v1.6.1
[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" "ghcr.io/rust-lang/crates-build-env/linux@sha256:a89201d6b5b9fd45c15d5952ece0a0129e7e80cb26ec023fd59cf09bc26f1604" "/opt/rustwide/cargo-home/bin/cargo" "+1.55.0" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 78149b68fe002d24b7f1c67850a5bc3f3320859d838c06a59f677131e00396b5
[INFO] running `Command { std: "docker" "start" "-a" "78149b68fe002d24b7f1c67850a5bc3f3320859d838c06a59f677131e00396b5", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "78149b68fe002d24b7f1c67850a5bc3f3320859d838c06a59f677131e00396b5", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "78149b68fe002d24b7f1c67850a5bc3f3320859d838c06a59f677131e00396b5", kill_on_drop: false }`
[INFO] [stdout] 78149b68fe002d24b7f1c67850a5bc3f3320859d838c06a59f677131e00396b5
[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" "ghcr.io/rust-lang/crates-build-env/linux@sha256:a89201d6b5b9fd45c15d5952ece0a0129e7e80cb26ec023fd59cf09bc26f1604" "/opt/rustwide/cargo-home/bin/cargo" "+1.55.0" "doc" "--frozen" "--no-deps" "--document-private-items" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] b60b7400c7417d681f4e5100176e2605ebea2491ccdeed9baf4eb48a05548f33
[INFO] running `Command { std: "docker" "start" "-a" "b60b7400c7417d681f4e5100176e2605ebea2491ccdeed9baf4eb48a05548f33", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
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[INFO] [stderr]  Documenting ckb-capsule v0.6.0 (/opt/rustwide/workdir)
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[INFO] running `Command { std: "docker" "inspect" "b60b7400c7417d681f4e5100176e2605ebea2491ccdeed9baf4eb48a05548f33", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "b60b7400c7417d681f4e5100176e2605ebea2491ccdeed9baf4eb48a05548f33", kill_on_drop: false }`
[INFO] [stdout] b60b7400c7417d681f4e5100176e2605ebea2491ccdeed9baf4eb48a05548f33