[INFO] fetching crate concurrency 4.20.1...
[INFO] documenting concurrency-4.20.1 against beta-2022-05-20 for beta-1.62-rustdoc-1
[INFO] extracting crate concurrency 4.20.1 into /workspace/builds/worker-90/source
[INFO] validating manifest of crates.io crate concurrency 4.20.1 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 concurrency 4.20.1
[INFO] finished tweaking crates.io crate concurrency 4.20.1
[INFO] tweaked toml for crates.io crate concurrency 4.20.1 written to /workspace/builds/worker-90/source/Cargo.toml
[INFO] crate crates.io crate concurrency 4.20.1 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] [stderr]     Blocking waiting for file lock on package cache
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-90/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-90/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] ee57a0d9207bfd5aa5f0a6eeee78ff206eb712e3f0e66136b309607dcd2a332e
[INFO] running `Command { std: "docker" "start" "-a" "ee57a0d9207bfd5aa5f0a6eeee78ff206eb712e3f0e66136b309607dcd2a332e", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "ee57a0d9207bfd5aa5f0a6eeee78ff206eb712e3f0e66136b309607dcd2a332e", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "ee57a0d9207bfd5aa5f0a6eeee78ff206eb712e3f0e66136b309607dcd2a332e", kill_on_drop: false }`
[INFO] [stdout] ee57a0d9207bfd5aa5f0a6eeee78ff206eb712e3f0e66136b309607dcd2a332e
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-90/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-90/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] 5afd90b30c5ba15550b5083dc3a7c6168205e46d79dec2899e7b148520934d21
[INFO] running `Command { std: "docker" "start" "-a" "5afd90b30c5ba15550b5083dc3a7c6168205e46d79dec2899e7b148520934d21", kill_on_drop: false }`
[INFO] [stderr]  Documenting concurrency v4.20.1 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 1.35s
[INFO] running `Command { std: "docker" "inspect" "5afd90b30c5ba15550b5083dc3a7c6168205e46d79dec2899e7b148520934d21", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "5afd90b30c5ba15550b5083dc3a7c6168205e46d79dec2899e7b148520934d21", kill_on_drop: false }`
[INFO] [stdout] 5afd90b30c5ba15550b5083dc3a7c6168205e46d79dec2899e7b148520934d21