[INFO] fetching crate shakmaty-syzygy 0.19.0...
[INFO] documenting shakmaty-syzygy-0.19.0 against beta-2022-05-20 for beta-1.62-rustdoc-1
[INFO] extracting crate shakmaty-syzygy 0.19.0 into /workspace/builds/worker-4/source
[INFO] validating manifest of crates.io crate shakmaty-syzygy 0.19.0 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 shakmaty-syzygy 0.19.0
[INFO] finished tweaking crates.io crate shakmaty-syzygy 0.19.0
[INFO] tweaked toml for crates.io crate shakmaty-syzygy 0.19.0 written to /workspace/builds/worker-4/source/Cargo.toml
[INFO] crate crates.io crate shakmaty-syzygy 0.19.0 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-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] 980b2ae4ac24acbf4036411d515d657f498d9348719a610b3cef99954540a4fd
[INFO] running `Command { std: "docker" "start" "-a" "980b2ae4ac24acbf4036411d515d657f498d9348719a610b3cef99954540a4fd", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "980b2ae4ac24acbf4036411d515d657f498d9348719a610b3cef99954540a4fd", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "980b2ae4ac24acbf4036411d515d657f498d9348719a610b3cef99954540a4fd", kill_on_drop: false }`
[INFO] [stdout] 980b2ae4ac24acbf4036411d515d657f498d9348719a610b3cef99954540a4fd
[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] [stdout] 047cb1550fa54c1f8ac42b0f7f3673b24d794dad964ec9da611b9a152909434d
[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" "047cb1550fa54c1f8ac42b0f7f3673b24d794dad964ec9da611b9a152909434d", kill_on_drop: false }`
[INFO] [stderr]    Compiling autocfg v1.1.0
[INFO] [stderr]    Compiling libc v0.2.119
[INFO] [stderr]    Compiling shakmaty v0.21.0
[INFO] [stderr]     Checking bitflags v1.3.2
[INFO] [stderr]     Checking arrayvec v0.7.2
[INFO] [stderr]     Checking byteorder v1.4.3
[INFO] [stderr]    Compiling num-traits v0.2.14
[INFO] [stderr]     Checking positioned-io-preview v0.3.3
[INFO] [stderr]     Checking btoi v0.4.2
[INFO] [stderr]  Documenting shakmaty-syzygy v0.19.0 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 12.12s
[INFO] running `Command { std: "docker" "inspect" "047cb1550fa54c1f8ac42b0f7f3673b24d794dad964ec9da611b9a152909434d", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "047cb1550fa54c1f8ac42b0f7f3673b24d794dad964ec9da611b9a152909434d", kill_on_drop: false }`
[INFO] [stdout] 047cb1550fa54c1f8ac42b0f7f3673b24d794dad964ec9da611b9a152909434d
[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" "--all-features" "--frozen" "--message-format=json" "--" "--cfg" "docs_rs" "-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] 97996066b11c0a558fe329b5e649f0c001dd727137e66f53995f0acfe33a078c
[INFO] running `Command { std: "docker" "start" "-a" "97996066b11c0a558fe329b5e649f0c001dd727137e66f53995f0acfe33a078c", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]    Compiling autocfg v1.1.0
[INFO] [stderr]    Compiling libc v0.2.119
[INFO] [stderr]    Compiling shakmaty v0.21.0
[INFO] [stderr]     Checking byteorder v1.4.3
[INFO] [stderr]     Checking bitflags v1.3.2
[INFO] [stderr]     Checking either v1.6.1
[INFO] [stderr]     Checking arrayvec v0.7.2
[INFO] [stderr]     Checking rustc-hash v1.1.0
[INFO] [stderr]     Checking once_cell v1.9.0
[INFO] [stderr]     Checking itertools v0.10.3
[INFO] [stderr]    Compiling num-traits v0.2.14
[INFO] [stderr]     Checking positioned-io-preview v0.3.3
[INFO] [stderr]     Checking btoi v0.4.2
[INFO] [stderr]  Documenting shakmaty-syzygy v0.19.0 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 15.46s
[INFO] running `Command { std: "docker" "inspect" "97996066b11c0a558fe329b5e649f0c001dd727137e66f53995f0acfe33a078c", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "97996066b11c0a558fe329b5e649f0c001dd727137e66f53995f0acfe33a078c", kill_on_drop: false }`
[INFO] [stdout] 97996066b11c0a558fe329b5e649f0c001dd727137e66f53995f0acfe33a078c