[INFO] fetching crate syn-expand-use 0.2.0...
[INFO] documenting syn-expand-use-0.2.0 against 1.61.0 for beta-1.62-rustdoc-1
[INFO] extracting crate syn-expand-use 0.2.0 into /workspace/builds/worker-18/source
[INFO] validating manifest of crates.io crate syn-expand-use 0.2.0 on toolchain 1.61.0
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+1.61.0" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking crates.io crate syn-expand-use 0.2.0
[INFO] finished tweaking crates.io crate syn-expand-use 0.2.0
[INFO] tweaked toml for crates.io crate syn-expand-use 0.2.0 written to /workspace/builds/worker-18/source/Cargo.toml
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+1.61.0" "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" "+1.61.0" "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-18/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-18/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" "+1.61.0" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] cc24f4739e801cb2d967947cd54ec81d29bbfff9c668118a9791dcb9ea2c8a31
[INFO] running `Command { std: "docker" "start" "-a" "cc24f4739e801cb2d967947cd54ec81d29bbfff9c668118a9791dcb9ea2c8a31", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "cc24f4739e801cb2d967947cd54ec81d29bbfff9c668118a9791dcb9ea2c8a31", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "cc24f4739e801cb2d967947cd54ec81d29bbfff9c668118a9791dcb9ea2c8a31", kill_on_drop: false }`
[INFO] [stdout] cc24f4739e801cb2d967947cd54ec81d29bbfff9c668118a9791dcb9ea2c8a31
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-18/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-18/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" "+1.61.0" "doc" "--frozen" "--no-deps" "--document-private-items" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] ae76d334e63fb8fa38a2a67e126b2ca554036f80de0903dc480692e7ef4e43af
[INFO] running `Command { std: "docker" "start" "-a" "ae76d334e63fb8fa38a2a67e126b2ca554036f80de0903dc480692e7ef4e43af", kill_on_drop: false }`
[INFO] [stderr]     Checking proc-macro2 v0.3.8
[INFO] [stderr]     Checking quote v0.5.2
[INFO] [stderr]     Checking syn v0.13.11
[INFO] [stderr]  Documenting syn-expand-use v0.2.0 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 4.83s
[INFO] running `Command { std: "docker" "inspect" "ae76d334e63fb8fa38a2a67e126b2ca554036f80de0903dc480692e7ef4e43af", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "ae76d334e63fb8fa38a2a67e126b2ca554036f80de0903dc480692e7ef4e43af", kill_on_drop: false }`
[INFO] [stdout] ae76d334e63fb8fa38a2a67e126b2ca554036f80de0903dc480692e7ef4e43af
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-18/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-18/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" "RUSTC_BOOTSTRAP=1" "-e" "DOCS_RS=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" "+1.61.0" "rustdoc" "--lib" "-Zrustdoc-map" "--all-features" "--frozen" "--message-format=json" "--" "-Z" "unstable-options" "--document-private-items", kill_on_drop: false }`
[INFO] [stdout] ea0a1c5f4fc0f34637e8715e38c79a63ce7167573de25efa9f998a528185b543
[INFO] running `Command { std: "docker" "start" "-a" "ea0a1c5f4fc0f34637e8715e38c79a63ce7167573de25efa9f998a528185b543", kill_on_drop: false }`
[INFO] [stderr]     Checking unicode-xid v0.1.0
[INFO] [stderr]     Checking proc-macro2 v0.3.8
[INFO] [stderr]     Checking quote v0.5.2
[INFO] [stderr]     Checking syn v0.13.11
[INFO] [stderr]  Documenting syn-expand-use v0.2.0 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 5.29s
[INFO] running `Command { std: "docker" "inspect" "ea0a1c5f4fc0f34637e8715e38c79a63ce7167573de25efa9f998a528185b543", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "ea0a1c5f4fc0f34637e8715e38c79a63ce7167573de25efa9f998a528185b543", kill_on_drop: false }`
[INFO] [stdout] ea0a1c5f4fc0f34637e8715e38c79a63ce7167573de25efa9f998a528185b543