[INFO] fetching crate skip-list 0.1.3...
[INFO] documenting skip-list-0.1.3 against beta-2022-05-20 for beta-1.62-rustdoc-1
[INFO] extracting crate skip-list 0.1.3 into /workspace/builds/worker-27/source
[INFO] validating manifest of crates.io crate skip-list 0.1.3 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 skip-list 0.1.3
[INFO] finished tweaking crates.io crate skip-list 0.1.3
[INFO] tweaked toml for crates.io crate skip-list 0.1.3 written to /workspace/builds/worker-27/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-27/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-27/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] [stdout] 43f15f64e6f894815702bd7dbc51b8a21c1dfd463237fde383adf0e1269ac2e6
[INFO] running `Command { std: "docker" "start" "-a" "43f15f64e6f894815702bd7dbc51b8a21c1dfd463237fde383adf0e1269ac2e6", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "43f15f64e6f894815702bd7dbc51b8a21c1dfd463237fde383adf0e1269ac2e6", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "43f15f64e6f894815702bd7dbc51b8a21c1dfd463237fde383adf0e1269ac2e6", kill_on_drop: false }`
[INFO] [stdout] 43f15f64e6f894815702bd7dbc51b8a21c1dfd463237fde383adf0e1269ac2e6
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-27/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-27/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] 2ab0dd5a382fe89fc5852c6a6850b61e48ff35187c183e2b4adf56c8c3fc3b6b
[INFO] running `Command { std: "docker" "start" "-a" "2ab0dd5a382fe89fc5852c6a6850b61e48ff35187c183e2b4adf56c8c3fc3b6b", kill_on_drop: false }`
[INFO] [stderr]     Checking ppv-lite86 v0.2.16
[INFO] [stderr]     Checking getrandom v0.2.6
[INFO] [stderr]     Checking rand_core v0.6.3
[INFO] [stderr]     Checking rand_chacha v0.3.1
[INFO] [stderr]     Checking rand v0.8.5
[INFO] [stderr]  Documenting skip-list v0.1.3 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 2.76s
[INFO] running `Command { std: "docker" "inspect" "2ab0dd5a382fe89fc5852c6a6850b61e48ff35187c183e2b4adf56c8c3fc3b6b", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "2ab0dd5a382fe89fc5852c6a6850b61e48ff35187c183e2b4adf56c8c3fc3b6b", kill_on_drop: false }`
[INFO] [stdout] 2ab0dd5a382fe89fc5852c6a6850b61e48ff35187c183e2b4adf56c8c3fc3b6b
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-27/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-27/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] [stdout] e023c778fb91bfc1b1c321d9400ee18583c5fd044aaa5a2214b607f7e538e6bb
[INFO] running `Command { std: "docker" "start" "-a" "e023c778fb91bfc1b1c321d9400ee18583c5fd044aaa5a2214b607f7e538e6bb", kill_on_drop: false }`
[INFO] [stderr]    Compiling libc v0.2.126
[INFO] [stderr]     Checking cfg-if v1.0.0
[INFO] [stderr]     Checking ppv-lite86 v0.2.16
[INFO] [stderr]     Checking getrandom v0.2.6
[INFO] [stderr]     Checking rand_core v0.6.3
[INFO] [stderr]     Checking rand_chacha v0.3.1
[INFO] [stderr]     Checking rand v0.8.5
[INFO] [stderr]  Documenting skip-list v0.1.3 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 5.52s
[INFO] running `Command { std: "docker" "inspect" "e023c778fb91bfc1b1c321d9400ee18583c5fd044aaa5a2214b607f7e538e6bb", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "e023c778fb91bfc1b1c321d9400ee18583c5fd044aaa5a2214b607f7e538e6bb", kill_on_drop: false }`
[INFO] [stdout] e023c778fb91bfc1b1c321d9400ee18583c5fd044aaa5a2214b607f7e538e6bb