[INFO] cloning repository https://github.com/hirokuma/rust-study-chapter8
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/hirokuma/rust-study-chapter8" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fhirokuma%2Frust-study-chapter8", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fhirokuma%2Frust-study-chapter8'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] e1ac45ef7d82bf92ddf9ada53bb0bbaa4552c22c
[INFO] documenting hirokuma/rust-study-chapter8 against beta-2025-09-21 for beta-rustdoc-1.91-2
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fhirokuma%2Frust-study-chapter8" "/workspace/builds/worker-6-tc2/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-6-tc2/source'...
[INFO] [stderr] done.
[INFO] started tweaking git repo https://github.com/hirokuma/rust-study-chapter8
[INFO] finished tweaking git repo https://github.com/hirokuma/rust-study-chapter8
[INFO] tweaked toml for git repo https://github.com/hirokuma/rust-study-chapter8 written to /workspace/builds/worker-6-tc2/source/Cargo.toml
[INFO] validating manifest of git repo https://github.com/hirokuma/rust-study-chapter8 on toolchain beta-2025-09-21
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+beta-2025-09-21" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] crate git repo https://github.com/hirokuma/rust-study-chapter8 already has a lockfile, it will not be regenerated
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+beta-2025-09-21" "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] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-tc2/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:e90291280db7d1fac5b66fc6dad9f9662629e7365a55743daf9bdf73ebc4ea79" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2025-09-21" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 7bb89e51a9fca7a81209d2f6a9d7b48f80fcfae6fc75e265573bce52aa1f7b28
[INFO] running `Command { std: "docker" "start" "-a" "7bb89e51a9fca7a81209d2f6a9d7b48f80fcfae6fc75e265573bce52aa1f7b28", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "7bb89e51a9fca7a81209d2f6a9d7b48f80fcfae6fc75e265573bce52aa1f7b28", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "7bb89e51a9fca7a81209d2f6a9d7b48f80fcfae6fc75e265573bce52aa1f7b28", kill_on_drop: false }`
[INFO] [stdout] 7bb89e51a9fca7a81209d2f6a9d7b48f80fcfae6fc75e265573bce52aa1f7b28
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-tc2/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" "RUSTFLAGS=--cap-lints=warn" "-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:e90291280db7d1fac5b66fc6dad9f9662629e7365a55743daf9bdf73ebc4ea79" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2025-09-21" "doc" "--frozen" "--no-deps" "--document-private-items" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 9cd5d07a735c63a8d926cf4d61b5a44da97a05eaf73ab7aa1542be83c2adc652
[INFO] running `Command { std: "docker" "start" "-a" "9cd5d07a735c63a8d926cf4d61b5a44da97a05eaf73ab7aa1542be83c2adc652", kill_on_drop: false }`
[INFO] [stderr]  Documenting chapter8 v0.1.0 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 0.52s
[INFO] [stderr]    Generated /opt/rustwide/target/doc/chapter8/index.html
[INFO] running `Command { std: "docker" "inspect" "9cd5d07a735c63a8d926cf4d61b5a44da97a05eaf73ab7aa1542be83c2adc652", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "9cd5d07a735c63a8d926cf4d61b5a44da97a05eaf73ab7aa1542be83c2adc652", kill_on_drop: false }`
[INFO] [stdout] 9cd5d07a735c63a8d926cf4d61b5a44da97a05eaf73ab7aa1542be83c2adc652