[INFO] fetching crate syn_util 0.4.2...
[INFO] documenting syn_util-0.4.2 against 1.61.0 for beta-1.62-rustdoc-1
[INFO] extracting crate syn_util 0.4.2 into /workspace/builds/worker-26/source
[INFO] validating manifest of crates.io crate syn_util 0.4.2 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_util 0.4.2
[INFO] finished tweaking crates.io crate syn_util 0.4.2
[INFO] tweaked toml for crates.io crate syn_util 0.4.2 written to /workspace/builds/worker-26/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] 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] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-26/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-26/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] 75b0297a5f8fc8a9dad730a2db8adf2cce2aa51ec6a1cbd8e99fd4ec457cc125
[INFO] running `Command { std: "docker" "start" "-a" "75b0297a5f8fc8a9dad730a2db8adf2cce2aa51ec6a1cbd8e99fd4ec457cc125", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "75b0297a5f8fc8a9dad730a2db8adf2cce2aa51ec6a1cbd8e99fd4ec457cc125", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "75b0297a5f8fc8a9dad730a2db8adf2cce2aa51ec6a1cbd8e99fd4ec457cc125", kill_on_drop: false }`
[INFO] [stdout] 75b0297a5f8fc8a9dad730a2db8adf2cce2aa51ec6a1cbd8e99fd4ec457cc125
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-26/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-26/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] 766dbc04aa1ee50056cc8397d70efaef9c0176a0bee8d360505bf26a56765a33
[INFO] running `Command { std: "docker" "start" "-a" "766dbc04aa1ee50056cc8397d70efaef9c0176a0bee8d360505bf26a56765a33", kill_on_drop: false }`
[INFO] [stderr]    Compiling proc-macro2 v1.0.39
[INFO] [stderr]     Checking unicode-ident v1.0.0
[INFO] [stderr]    Compiling syn v1.0.95
[INFO] [stderr]     Checking quote v1.0.18
[INFO] [stderr]  Documenting syn_util v0.4.2 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 4.81s
[INFO] running `Command { std: "docker" "inspect" "766dbc04aa1ee50056cc8397d70efaef9c0176a0bee8d360505bf26a56765a33", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "766dbc04aa1ee50056cc8397d70efaef9c0176a0bee8d360505bf26a56765a33", kill_on_drop: false }`
[INFO] [stdout] 766dbc04aa1ee50056cc8397d70efaef9c0176a0bee8d360505bf26a56765a33
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-26/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-26/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" "+1.61.0" "rustdoc" "--lib" "-Zrustdoc-map" "--frozen" "--message-format=json" "--" "-Z" "unstable-options" "--document-private-items", kill_on_drop: false }`
[INFO] [stdout] 8d5c6d2b18c9a9fee3fcf893bed6c4e2502cdcad2be08a401c5f08b0c9bc2a0f
[INFO] running `Command { std: "docker" "start" "-a" "8d5c6d2b18c9a9fee3fcf893bed6c4e2502cdcad2be08a401c5f08b0c9bc2a0f", kill_on_drop: false }`
[INFO] [stderr]    Compiling proc-macro2 v1.0.39
[INFO] [stderr]     Checking unicode-ident v1.0.0
[INFO] [stderr]    Compiling syn v1.0.95
[INFO] [stderr]     Checking quote v1.0.18
[INFO] [stderr]  Documenting syn_util v0.4.2 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 4.35s
[INFO] running `Command { std: "docker" "inspect" "8d5c6d2b18c9a9fee3fcf893bed6c4e2502cdcad2be08a401c5f08b0c9bc2a0f", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "8d5c6d2b18c9a9fee3fcf893bed6c4e2502cdcad2be08a401c5f08b0c9bc2a0f", kill_on_drop: false }`
[INFO] [stdout] 8d5c6d2b18c9a9fee3fcf893bed6c4e2502cdcad2be08a401c5f08b0c9bc2a0f