[INFO] fetching crate gc-arena-derive 0.2.2...
[INFO] documenting gc-arena-derive-0.2.2 against 1.54.0 for beta-1.55-rustdoc-1
[INFO] extracting crate gc-arena-derive 0.2.2 into /workspace/builds/worker-62/source
[INFO] validating manifest of crates.io crate gc-arena-derive 0.2.2 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 gc-arena-derive 0.2.2
[INFO] finished tweaking crates.io crate gc-arena-derive 0.2.2
[INFO] tweaked toml for crates.io crate gc-arena-derive 0.2.2 written to /workspace/builds/worker-62/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] 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-62/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-62/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] 57272326a04a40ba9b88f49c2a36d3d5d73701c238ad388ce175ff5984e16401
[INFO] running `Command { std: "docker" "start" "-a" "57272326a04a40ba9b88f49c2a36d3d5d73701c238ad388ce175ff5984e16401", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "57272326a04a40ba9b88f49c2a36d3d5d73701c238ad388ce175ff5984e16401", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "57272326a04a40ba9b88f49c2a36d3d5d73701c238ad388ce175ff5984e16401", kill_on_drop: false }`
[INFO] [stdout] 57272326a04a40ba9b88f49c2a36d3d5d73701c238ad388ce175ff5984e16401
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-62/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-62/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] 913e8a919cac974d6283f2d27035107d8c10c955378c534f46747e5f2d355ff4
[INFO] running `Command { std: "docker" "start" "-a" "913e8a919cac974d6283f2d27035107d8c10c955378c534f46747e5f2d355ff4", kill_on_drop: false }`
[INFO] [stderr]    Compiling proc-macro2 v1.0.28
[INFO] [stderr]     Checking unicode-xid v0.2.2
[INFO] [stderr]    Compiling syn v1.0.74
[INFO] [stderr]     Checking quote v1.0.9
[INFO] [stderr]     Checking synstructure v0.12.5
[INFO] [stderr]  Documenting gc-arena-derive v0.2.2 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 9.95s
[INFO] running `Command { std: "docker" "inspect" "913e8a919cac974d6283f2d27035107d8c10c955378c534f46747e5f2d355ff4", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "913e8a919cac974d6283f2d27035107d8c10c955378c534f46747e5f2d355ff4", kill_on_drop: false }`
[INFO] [stdout] 913e8a919cac974d6283f2d27035107d8c10c955378c534f46747e5f2d355ff4
