[INFO] fetching crate target_build_utils 0.3.1...
[INFO] documenting target_build_utils-0.3.1 against 1.61.0 for beta-1.62-rustdoc-1
[INFO] extracting crate target_build_utils 0.3.1 into /workspace/builds/worker-39/source
[INFO] validating manifest of crates.io crate target_build_utils 0.3.1 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 target_build_utils 0.3.1
[INFO] finished tweaking crates.io crate target_build_utils 0.3.1
[INFO] tweaked toml for crates.io crate target_build_utils 0.3.1 written to /workspace/builds/worker-39/source/Cargo.toml
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+1.61.0" "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" "+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] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-39/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-39/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] 67b6fc3483e40d59c6f1ad8ed1f65244f3d2d61af17866f49008695403691232
[INFO] running `Command { std: "docker" "start" "-a" "67b6fc3483e40d59c6f1ad8ed1f65244f3d2d61af17866f49008695403691232", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "67b6fc3483e40d59c6f1ad8ed1f65244f3d2d61af17866f49008695403691232", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "67b6fc3483e40d59c6f1ad8ed1f65244f3d2d61af17866f49008695403691232", kill_on_drop: false }`
[INFO] [stdout] 67b6fc3483e40d59c6f1ad8ed1f65244f3d2d61af17866f49008695403691232
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-39/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-39/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] 431225d5e92cc2156d7ca17e2a98aec3e32feb9aafff8863ba53119c23440869
[INFO] running `Command { std: "docker" "start" "-a" "431225d5e92cc2156d7ca17e2a98aec3e32feb9aafff8863ba53119c23440869", kill_on_drop: false }`
[INFO] [stderr]    Compiling rand_core v0.4.2
[INFO] [stderr]     Checking serde v0.9.15
[INFO] [stderr]     Checking itoa v0.3.4
[INFO] [stderr]    Compiling autocfg v0.1.8
[INFO] [stderr]    Compiling num-traits v0.2.15
[INFO] [stderr]    Compiling phf_shared v0.7.24
[INFO] [stderr]    Compiling rand_core v0.3.1
[INFO] [stderr]    Compiling rand_os v0.1.3
[INFO] [stderr]    Compiling rand_jitter v0.1.4
[INFO] [stderr]     Checking phf v0.7.24
[INFO] [stderr]    Compiling rand_xorshift v0.1.1
[INFO] [stderr]    Compiling rand_isaac v0.1.1
[INFO] [stderr]    Compiling rand_hc v0.1.0
[INFO] [stderr]    Compiling rand_pcg v0.1.2
[INFO] [stderr]    Compiling rand_chacha v0.1.1
[INFO] [stderr]    Compiling rand v0.6.5
[INFO] [stderr]    Compiling phf_generator v0.7.24
[INFO] [stderr]    Compiling phf_codegen v0.7.24
[INFO] [stderr]    Compiling target_build_utils v0.3.1 (/opt/rustwide/workdir)
[INFO] [stderr]     Checking num-traits v0.1.43
[INFO] [stderr]     Checking serde_json v0.9.10
[INFO] [stderr]  Documenting target_build_utils v0.3.1 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 27.31s
[INFO] running `Command { std: "docker" "inspect" "431225d5e92cc2156d7ca17e2a98aec3e32feb9aafff8863ba53119c23440869", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "431225d5e92cc2156d7ca17e2a98aec3e32feb9aafff8863ba53119c23440869", kill_on_drop: false }`
[INFO] [stdout] 431225d5e92cc2156d7ca17e2a98aec3e32feb9aafff8863ba53119c23440869
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-39/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-39/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" "RUSTC_BOOTSTRAP=1" "-e" "DOCS_RS=1" "-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" "rustdoc" "--lib" "-Zrustdoc-map" "--frozen" "--message-format=json" "--" "-Z" "unstable-options" "--document-private-items", kill_on_drop: false }`
[INFO] [stdout] 314cf84ba80ae7b85c6f548a5f366ff24e542311e05f6298128e15b50316119f
[INFO] running `Command { std: "docker" "start" "-a" "314cf84ba80ae7b85c6f548a5f366ff24e542311e05f6298128e15b50316119f", kill_on_drop: false }`
[INFO] [stderr]    Compiling autocfg v1.1.0
[INFO] [stderr]    Compiling rand_core v0.4.2
[INFO] [stderr]    Compiling libc v0.2.126
[INFO] [stderr]    Compiling siphasher v0.2.3
[INFO] [stderr]     Checking serde v0.9.15
[INFO] [stderr]     Checking dtoa v0.4.8
[INFO] [stderr]     Checking itoa v0.3.4
[INFO] [stderr]    Compiling rand_core v0.3.1
[INFO] [stderr]    Compiling rand_jitter v0.1.4
[INFO] [stderr]    Compiling phf_shared v0.7.24
[INFO] [stderr]    Compiling autocfg v0.1.8
[INFO] [stderr]    Compiling num-traits v0.2.15
[INFO] [stderr]    Compiling rand_hc v0.1.0
[INFO] [stderr]    Compiling rand_xorshift v0.1.1
[INFO] [stderr]    Compiling rand_isaac v0.1.1
[INFO] [stderr]    Compiling rand_os v0.1.3
[INFO] [stderr]     Checking phf v0.7.24
[INFO] [stderr]    Compiling rand_chacha v0.1.1
[INFO] [stderr]    Compiling rand_pcg v0.1.2
[INFO] [stderr]    Compiling rand v0.6.5
[INFO] [stderr]     Checking num-traits v0.1.43
[INFO] [stderr]     Checking serde_json v0.9.10
[INFO] [stderr]    Compiling phf_generator v0.7.24
[INFO] [stderr]    Compiling phf_codegen v0.7.24
[INFO] [stderr]    Compiling target_build_utils v0.3.1 (/opt/rustwide/workdir)
[INFO] [stderr]  Documenting target_build_utils v0.3.1 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 42.55s
[INFO] running `Command { std: "docker" "inspect" "314cf84ba80ae7b85c6f548a5f366ff24e542311e05f6298128e15b50316119f", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "314cf84ba80ae7b85c6f548a5f366ff24e542311e05f6298128e15b50316119f", kill_on_drop: false }`
[INFO] [stdout] 314cf84ba80ae7b85c6f548a5f366ff24e542311e05f6298128e15b50316119f