[INFO] fetching crate futures-executor-preview 0.3.0-alpha.19...
[INFO] documenting futures-executor-preview-0.3.0-alpha.19 against beta-2022-05-20 for beta-1.62-rustdoc-1
[INFO] extracting crate futures-executor-preview 0.3.0-alpha.19 into /workspace/builds/worker-15/source
[INFO] validating manifest of crates.io crate futures-executor-preview 0.3.0-alpha.19 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 futures-executor-preview 0.3.0-alpha.19
[INFO] finished tweaking crates.io crate futures-executor-preview 0.3.0-alpha.19
[INFO] tweaked toml for crates.io crate futures-executor-preview 0.3.0-alpha.19 written to /workspace/builds/worker-15/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] [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-15/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-15/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] 182bc43e803b8562fb64065c541d2a7ce71259add0cf19e6df0b8730f7e9d7d7
[INFO] running `Command { std: "docker" "start" "-a" "182bc43e803b8562fb64065c541d2a7ce71259add0cf19e6df0b8730f7e9d7d7", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "182bc43e803b8562fb64065c541d2a7ce71259add0cf19e6df0b8730f7e9d7d7", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "182bc43e803b8562fb64065c541d2a7ce71259add0cf19e6df0b8730f7e9d7d7", kill_on_drop: false }`
[INFO] [stdout] 182bc43e803b8562fb64065c541d2a7ce71259add0cf19e6df0b8730f7e9d7d7
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-15/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-15/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] 0f0e296f95d18187b44c7960757b21bb3dae84cddd592486e9bebfe1236fd200
[INFO] running `Command { std: "docker" "start" "-a" "0f0e296f95d18187b44c7960757b21bb3dae84cddd592486e9bebfe1236fd200", kill_on_drop: false }`
[INFO] [stderr]    Compiling libc v0.2.126
[INFO] [stderr]     Checking futures-core-preview v0.3.0-alpha.19
[INFO] [stderr]     Checking pin-utils v0.1.0
[INFO] [stderr]     Checking slab v0.4.6
[INFO] [stderr]     Checking futures-util-preview v0.3.0-alpha.19
[INFO] [stderr]     Checking num_cpus v1.13.1
[INFO] [stderr]  Documenting futures-executor-preview v0.3.0-alpha.19 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 2.84s
[INFO] running `Command { std: "docker" "inspect" "0f0e296f95d18187b44c7960757b21bb3dae84cddd592486e9bebfe1236fd200", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "0f0e296f95d18187b44c7960757b21bb3dae84cddd592486e9bebfe1236fd200", kill_on_drop: false }`
[INFO] [stdout] 0f0e296f95d18187b44c7960757b21bb3dae84cddd592486e9bebfe1236fd200
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-15/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-15/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" "DOCS_RS=1" "-e" "RUSTC_BOOTSTRAP=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] 70ae239754aaf24a24657b1b4d295580b5381479c34e2f4f94f5ab53d054bf62
[INFO] running `Command { std: "docker" "start" "-a" "70ae239754aaf24a24657b1b4d295580b5381479c34e2f4f94f5ab53d054bf62", 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] [stderr]    Compiling libc v0.2.126
[INFO] [stderr]     Checking slab v0.4.6
[INFO] [stderr]     Checking pin-utils v0.1.0
[INFO] [stderr]     Checking futures-core-preview v0.3.0-alpha.19
[INFO] [stderr]     Checking futures-util-preview v0.3.0-alpha.19
[INFO] [stderr]     Checking num_cpus v1.13.1
[INFO] [stderr]  Documenting futures-executor-preview v0.3.0-alpha.19 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 3.39s
[INFO] running `Command { std: "docker" "inspect" "70ae239754aaf24a24657b1b4d295580b5381479c34e2f4f94f5ab53d054bf62", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "70ae239754aaf24a24657b1b4d295580b5381479c34e2f4f94f5ab53d054bf62", kill_on_drop: false }`
[INFO] [stdout] 70ae239754aaf24a24657b1b4d295580b5381479c34e2f4f94f5ab53d054bf62