[INFO] fetching crate future-utils 0.12.1...
[INFO] documenting future-utils-0.12.1 against 1.54.0 for beta-1.55-rustdoc-1
[INFO] extracting crate future-utils 0.12.1 into /workspace/builds/worker-10/source
[INFO] validating manifest of crates.io crate future-utils 0.12.1 on toolchain 1.54.0
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+1.54.0" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking crates.io crate future-utils 0.12.1
[INFO] finished tweaking crates.io crate future-utils 0.12.1
[INFO] tweaked toml for crates.io crate future-utils 0.12.1 written to /workspace/builds/worker-10/source/Cargo.toml
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+1.54.0" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+1.54.0" "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-10/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-10/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@sha256:34b6a614d2c27851fe6cbf88fbd1137609cefab8b10d0615aaeb6fd47975d74e" "/opt/rustwide/cargo-home/bin/cargo" "+1.54.0" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 9364b8e5c44b1ee08cb932564a6481e6b0aeba6b0c93f363e12d30ec13a813d0
[INFO] running `Command { std: "docker" "start" "-a" "9364b8e5c44b1ee08cb932564a6481e6b0aeba6b0c93f363e12d30ec13a813d0", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "9364b8e5c44b1ee08cb932564a6481e6b0aeba6b0c93f363e12d30ec13a813d0", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "9364b8e5c44b1ee08cb932564a6481e6b0aeba6b0c93f363e12d30ec13a813d0", kill_on_drop: false }`
[INFO] [stdout] 9364b8e5c44b1ee08cb932564a6481e6b0aeba6b0c93f363e12d30ec13a813d0
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-10/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-10/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@sha256:34b6a614d2c27851fe6cbf88fbd1137609cefab8b10d0615aaeb6fd47975d74e" "/opt/rustwide/cargo-home/bin/cargo" "+1.54.0" "doc" "--frozen" "--no-deps" "--document-private-items" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] d622b1a6f0574d4fe0a4acb9932748082a0ab7086fea2b731d2fac2d59936ab2
[INFO] running `Command { std: "docker" "start" "-a" "d622b1a6f0574d4fe0a4acb9932748082a0ab7086fea2b731d2fac2d59936ab2", kill_on_drop: false }`
[INFO] [stderr]     Checking void v1.0.2
[INFO] [stderr]     Checking unwrap v1.2.1
[INFO] [stderr]     Checking bytes v0.4.12
[INFO] [stderr]     Checking tokio-io v0.1.13
[INFO] [stderr]     Checking tokio-reactor v0.1.12
[INFO] [stderr]     Checking tokio-codec v0.1.2
[INFO] [stderr]     Checking tokio-fs v0.1.7
[INFO] [stderr]     Checking tokio-tcp v0.1.4
[INFO] [stderr]     Checking tokio-uds v0.2.7
[INFO] [stderr]     Checking tokio-udp v0.1.6
[INFO] [stderr]     Checking tokio v0.1.22
[INFO] [stderr]  Documenting future-utils v0.12.1 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 6.36s
[INFO] running `Command { std: "docker" "inspect" "d622b1a6f0574d4fe0a4acb9932748082a0ab7086fea2b731d2fac2d59936ab2", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "d622b1a6f0574d4fe0a4acb9932748082a0ab7086fea2b731d2fac2d59936ab2", kill_on_drop: false }`
[INFO] [stdout] d622b1a6f0574d4fe0a4acb9932748082a0ab7086fea2b731d2fac2d59936ab2
