[INFO] fetching crate predicates-tree 1.0.5...
[INFO] documenting predicates-tree-1.0.5 against beta-2022-05-20 for beta-1.62-rustdoc-1
[INFO] extracting crate predicates-tree 1.0.5 into /workspace/builds/worker-6/source
[INFO] validating manifest of crates.io crate predicates-tree 1.0.5 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 predicates-tree 1.0.5
[INFO] finished tweaking crates.io crate predicates-tree 1.0.5
[INFO] tweaked toml for crates.io crate predicates-tree 1.0.5 written to /workspace/builds/worker-6/source/Cargo.toml
[INFO] crate crates.io crate predicates-tree 1.0.5 already has a lockfile, it will not be regenerated
[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-6/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-6/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] a784efd7fb7458cce3856aba296e35f29d3d5fb6d08271a78cf7cac60d904b56
[INFO] running `Command { std: "docker" "start" "-a" "a784efd7fb7458cce3856aba296e35f29d3d5fb6d08271a78cf7cac60d904b56", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "a784efd7fb7458cce3856aba296e35f29d3d5fb6d08271a78cf7cac60d904b56", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "a784efd7fb7458cce3856aba296e35f29d3d5fb6d08271a78cf7cac60d904b56", kill_on_drop: false }`
[INFO] [stdout] a784efd7fb7458cce3856aba296e35f29d3d5fb6d08271a78cf7cac60d904b56
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-6/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-6/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] [stdout] e109865f04b394c8751d0e059cf0c1687065b3a6fe178a995979546041e3b9cf
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] running `Command { std: "docker" "start" "-a" "e109865f04b394c8751d0e059cf0c1687065b3a6fe178a995979546041e3b9cf", kill_on_drop: false }`
[INFO] [stderr]     Checking termtree v0.2.4
[INFO] [stderr]     Checking predicates-core v1.0.3
[INFO] [stderr]  Documenting predicates-tree v1.0.5 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 2.56s
[INFO] running `Command { std: "docker" "inspect" "e109865f04b394c8751d0e059cf0c1687065b3a6fe178a995979546041e3b9cf", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "e109865f04b394c8751d0e059cf0c1687065b3a6fe178a995979546041e3b9cf", kill_on_drop: false }`
[INFO] [stdout] e109865f04b394c8751d0e059cf0c1687065b3a6fe178a995979546041e3b9cf
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-6/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-6/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] db47d847c9f6ae160e1e28c27f66518e2032b1368f68d95b256809597ed75b7a
[INFO] running `Command { std: "docker" "start" "-a" "db47d847c9f6ae160e1e28c27f66518e2032b1368f68d95b256809597ed75b7a", kill_on_drop: false }`
[INFO] [stderr]     Checking termtree v0.2.4
[INFO] [stderr]     Checking predicates-core v1.0.3
[INFO] [stderr]  Documenting predicates-tree v1.0.5 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 2.26s
[INFO] running `Command { std: "docker" "inspect" "db47d847c9f6ae160e1e28c27f66518e2032b1368f68d95b256809597ed75b7a", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "db47d847c9f6ae160e1e28c27f66518e2032b1368f68d95b256809597ed75b7a", kill_on_drop: false }`
[INFO] [stdout] db47d847c9f6ae160e1e28c27f66518e2032b1368f68d95b256809597ed75b7a