[INFO] fetching crate async-mutex 1.4.0...
[INFO] documenting async-mutex-1.4.0 against 1.54.0 for beta-1.55-rustdoc-1
[INFO] extracting crate async-mutex 1.4.0 into /workspace/builds/worker-6/source
[INFO] validating manifest of crates.io crate async-mutex 1.4.0 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 async-mutex 1.4.0
[INFO] finished tweaking crates.io crate async-mutex 1.4.0
[INFO] tweaked toml for crates.io crate async-mutex 1.4.0 written to /workspace/builds/worker-6/source/Cargo.toml
[INFO] crate crates.io crate async-mutex 1.4.0 already has a lockfile, it will not be regenerated
[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] 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@sha256:34b6a614d2c27851fe6cbf88fbd1137609cefab8b10d0615aaeb6fd47975d74e" "/opt/rustwide/cargo-home/bin/cargo" "+1.54.0" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] eb0a15cf56fc6fbf9a13ededa860b68bc93658fe1ce0e81d235f5f0ff4dbd88f
[INFO] running `Command { std: "docker" "start" "-a" "eb0a15cf56fc6fbf9a13ededa860b68bc93658fe1ce0e81d235f5f0ff4dbd88f", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "eb0a15cf56fc6fbf9a13ededa860b68bc93658fe1ce0e81d235f5f0ff4dbd88f", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "eb0a15cf56fc6fbf9a13ededa860b68bc93658fe1ce0e81d235f5f0ff4dbd88f", kill_on_drop: false }`
[INFO] [stdout] eb0a15cf56fc6fbf9a13ededa860b68bc93658fe1ce0e81d235f5f0ff4dbd88f
[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@sha256:34b6a614d2c27851fe6cbf88fbd1137609cefab8b10d0615aaeb6fd47975d74e" "/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] 458cf7710d8ee919df6f40d7ea2a84aa0ba81da9e27c08a2cd6c6ba320c7af80
[INFO] running `Command { std: "docker" "start" "-a" "458cf7710d8ee919df6f40d7ea2a84aa0ba81da9e27c08a2cd6c6ba320c7af80", kill_on_drop: false }`
[INFO] [stderr]  Documenting async-mutex v1.4.0 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.81s
[INFO] running `Command { std: "docker" "inspect" "458cf7710d8ee919df6f40d7ea2a84aa0ba81da9e27c08a2cd6c6ba320c7af80", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "458cf7710d8ee919df6f40d7ea2a84aa0ba81da9e27c08a2cd6c6ba320c7af80", kill_on_drop: false }`
[INFO] [stdout] 458cf7710d8ee919df6f40d7ea2a84aa0ba81da9e27c08a2cd6c6ba320c7af80
