[INFO] fetching crate nibbler 0.2.3...
[INFO] documenting nibbler-0.2.3 against beta-2022-05-20 for beta-1.62-rustdoc-1
[INFO] extracting crate nibbler 0.2.3 into /workspace/builds/worker-4/source
[INFO] validating manifest of crates.io crate nibbler 0.2.3 on toolchain beta-2022-05-20
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+beta-2022-05-20" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking crates.io crate nibbler 0.2.3
[INFO] finished tweaking crates.io crate nibbler 0.2.3
[INFO] tweaked toml for crates.io crate nibbler 0.2.3 written to /workspace/builds/worker-4/source/Cargo.toml
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+beta-2022-05-20" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update", kill_on_drop: false }`
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+beta-2022-05-20" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[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:d190cb871061d98bc6d0581d85cb2ecb09a0f8a142ba5463de30be9999fc3251" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2022-05-20" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] [stdout] 093b3dc22d6d23b44795fc6900eb291a5d44708b84b94bc319787409dc8b8c73
[INFO] running `Command { std: "docker" "start" "-a" "093b3dc22d6d23b44795fc6900eb291a5d44708b84b94bc319787409dc8b8c73", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "093b3dc22d6d23b44795fc6900eb291a5d44708b84b94bc319787409dc8b8c73", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "093b3dc22d6d23b44795fc6900eb291a5d44708b84b94bc319787409dc8b8c73", kill_on_drop: false }`
[INFO] [stdout] 093b3dc22d6d23b44795fc6900eb291a5d44708b84b94bc319787409dc8b8c73
[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:d190cb871061d98bc6d0581d85cb2ecb09a0f8a142ba5463de30be9999fc3251" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2022-05-20" "doc" "--frozen" "--no-deps" "--document-private-items" "--message-format=json", kill_on_drop: false }`
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] [stdout] d1fac84b2244b6b947e3e38c40ddd4d812aa5542c2f304f7dd4151ce95599e87
[INFO] running `Command { std: "docker" "start" "-a" "d1fac84b2244b6b947e3e38c40ddd4d812aa5542c2f304f7dd4151ce95599e87", kill_on_drop: false }`
[INFO] [stderr]  Documenting nibbler v0.2.3 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 1.93s
[INFO] running `Command { std: "docker" "inspect" "d1fac84b2244b6b947e3e38c40ddd4d812aa5542c2f304f7dd4151ce95599e87", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "d1fac84b2244b6b947e3e38c40ddd4d812aa5542c2f304f7dd4151ce95599e87", kill_on_drop: false }`
[INFO] [stdout] d1fac84b2244b6b947e3e38c40ddd4d812aa5542c2f304f7dd4151ce95599e87
[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" "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" "+beta-2022-05-20" "rustdoc" "--lib" "-Zrustdoc-map" "--frozen" "--message-format=json" "--" "-Z" "unstable-options" "--document-private-items", kill_on_drop: false }`
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] [stdout] 3fdfc1e03f936abd51cfbc2ad00ea859e8d3ffc59244ec7761a9807e7e67a6aa
[INFO] running `Command { std: "docker" "start" "-a" "3fdfc1e03f936abd51cfbc2ad00ea859e8d3ffc59244ec7761a9807e7e67a6aa", kill_on_drop: false }`
[INFO] [stderr]  Documenting nibbler v0.2.3 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 1.59s
[INFO] running `Command { std: "docker" "inspect" "3fdfc1e03f936abd51cfbc2ad00ea859e8d3ffc59244ec7761a9807e7e67a6aa", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "3fdfc1e03f936abd51cfbc2ad00ea859e8d3ffc59244ec7761a9807e7e67a6aa", kill_on_drop: false }`
[INFO] [stdout] 3fdfc1e03f936abd51cfbc2ad00ea859e8d3ffc59244ec7761a9807e7e67a6aa