[INFO] fetching crate k2_tree 0.5.2...
[INFO] documenting k2_tree-0.5.2 against beta-2021-08-01 for beta-1.55-rustdoc-1
[INFO] extracting crate k2_tree 0.5.2 into /workspace/builds/worker-8/source
[INFO] validating manifest of crates.io crate k2_tree 0.5.2 on toolchain beta-2021-08-01
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+beta-2021-08-01" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking crates.io crate k2_tree 0.5.2
[INFO] finished tweaking crates.io crate k2_tree 0.5.2
[INFO] tweaked toml for crates.io crate k2_tree 0.5.2 written to /workspace/builds/worker-8/source/Cargo.toml
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+beta-2021-08-01" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+beta-2021-08-01" "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-8/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-8/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@sha256:34b6a614d2c27851fe6cbf88fbd1137609cefab8b10d0615aaeb6fd47975d74e" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2021-08-01" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] ec56c6ee380af6e7638b37b2a11a3b14ee60a4c5ce189c679f38090cc9f2f03e
[INFO] running `Command { std: "docker" "start" "-a" "ec56c6ee380af6e7638b37b2a11a3b14ee60a4c5ce189c679f38090cc9f2f03e", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "ec56c6ee380af6e7638b37b2a11a3b14ee60a4c5ce189c679f38090cc9f2f03e", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "ec56c6ee380af6e7638b37b2a11a3b14ee60a4c5ce189c679f38090cc9f2f03e", kill_on_drop: false }`
[INFO] [stdout] ec56c6ee380af6e7638b37b2a11a3b14ee60a4c5ce189c679f38090cc9f2f03e
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-8/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-8/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@sha256:34b6a614d2c27851fe6cbf88fbd1137609cefab8b10d0615aaeb6fd47975d74e" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2021-08-01" "doc" "--frozen" "--no-deps" "--document-private-items" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] d0e1491ee264f89d9170e73ab6620faef031f7e38a5016d3a9b2fb643abc7792
[INFO] running `Command { std: "docker" "start" "-a" "d0e1491ee264f89d9170e73ab6620faef031f7e38a5016d3a9b2fb643abc7792", kill_on_drop: false }`
[INFO] [stderr]     Checking radium v0.3.0
[INFO] [stderr]     Checking bitvec v0.17.4
[INFO] [stderr]  Documenting k2_tree v0.5.2 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 3.35s
[INFO] running `Command { std: "docker" "inspect" "d0e1491ee264f89d9170e73ab6620faef031f7e38a5016d3a9b2fb643abc7792", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "d0e1491ee264f89d9170e73ab6620faef031f7e38a5016d3a9b2fb643abc7792", kill_on_drop: false }`
[INFO] [stdout] d0e1491ee264f89d9170e73ab6620faef031f7e38a5016d3a9b2fb643abc7792
