[INFO] fetching crate flock 0.2.0...
[INFO] documenting flock-0.2.0 against 1.61.0 for beta-1.62-rustdoc-1
[INFO] extracting crate flock 0.2.0 into /workspace/builds/worker-28/source
[INFO] validating manifest of crates.io crate flock 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 flock 0.2.0
[INFO] finished tweaking crates.io crate flock 0.2.0
[INFO] tweaked toml for crates.io crate flock 0.2.0 written to /workspace/builds/worker-28/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] 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-28/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-28/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] d5f3f84b2e51127e7a35a115e215be8e79e78721e414eb4216e0ff2ded8d844a
[INFO] running `Command { std: "docker" "start" "-a" "d5f3f84b2e51127e7a35a115e215be8e79e78721e414eb4216e0ff2ded8d844a", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "d5f3f84b2e51127e7a35a115e215be8e79e78721e414eb4216e0ff2ded8d844a", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "d5f3f84b2e51127e7a35a115e215be8e79e78721e414eb4216e0ff2ded8d844a", kill_on_drop: false }`
[INFO] [stdout] d5f3f84b2e51127e7a35a115e215be8e79e78721e414eb4216e0ff2ded8d844a
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-28/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-28/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] 0d131d9ca224301817d2600c2dfe7900a5e961b7c1e9bfe53e5cf29b3a6bfd52
[INFO] running `Command { std: "docker" "start" "-a" "0d131d9ca224301817d2600c2dfe7900a5e961b7c1e9bfe53e5cf29b3a6bfd52", kill_on_drop: false }`
[INFO] [stderr]    Compiling libc v0.2.126
[INFO] [stderr]     Checking either v1.6.1
[INFO] [stderr]     Checking crossbeam v0.2.12
[INFO] [stderr]     Checking rand v0.4.6
[INFO] [stderr]     Checking num_cpus v1.13.1
[INFO] [stderr]     Checking rand v0.3.23
[INFO] [stderr]  Documenting flock v0.2.0 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 6.40s
[INFO] running `Command { std: "docker" "inspect" "0d131d9ca224301817d2600c2dfe7900a5e961b7c1e9bfe53e5cf29b3a6bfd52", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "0d131d9ca224301817d2600c2dfe7900a5e961b7c1e9bfe53e5cf29b3a6bfd52", kill_on_drop: false }`
[INFO] [stdout] 0d131d9ca224301817d2600c2dfe7900a5e961b7c1e9bfe53e5cf29b3a6bfd52
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-28/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-28/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" "DOCS_RS=1" "-e" "RUSTC_BOOTSTRAP=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] 8ad584e869fe86108429895bf8fe78e21c3aef4cb866c98e74738b5b47992986
[INFO] running `Command { std: "docker" "start" "-a" "8ad584e869fe86108429895bf8fe78e21c3aef4cb866c98e74738b5b47992986", kill_on_drop: false }`
[INFO] [stderr]    Compiling libc v0.2.126
[INFO] [stderr]     Checking either v1.6.1
[INFO] [stderr]     Checking crossbeam v0.2.12
[INFO] [stderr]     Checking rand v0.4.6
[INFO] [stderr]     Checking num_cpus v1.13.1
[INFO] [stderr]     Checking rand v0.3.23
[INFO] [stderr]  Documenting flock v0.2.0 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 5.57s
[INFO] running `Command { std: "docker" "inspect" "8ad584e869fe86108429895bf8fe78e21c3aef4cb866c98e74738b5b47992986", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "8ad584e869fe86108429895bf8fe78e21c3aef4cb866c98e74738b5b47992986", kill_on_drop: false }`
[INFO] [stdout] 8ad584e869fe86108429895bf8fe78e21c3aef4cb866c98e74738b5b47992986