[INFO] fetching crate hackfn 0.1.7...
[INFO] documenting hackfn-0.1.7 against 1.61.0 for beta-1.62-rustdoc-1
[INFO] extracting crate hackfn 0.1.7 into /workspace/builds/worker-19/source
[INFO] validating manifest of crates.io crate hackfn 0.1.7 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 hackfn 0.1.7
[INFO] finished tweaking crates.io crate hackfn 0.1.7
[INFO] tweaked toml for crates.io crate hackfn 0.1.7 written to /workspace/builds/worker-19/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-19/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-19/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] 9335f78b36053de9ad56ce7fd7b88e6dc8299498cac37df98b38df561ecdfb40
[INFO] running `Command { std: "docker" "start" "-a" "9335f78b36053de9ad56ce7fd7b88e6dc8299498cac37df98b38df561ecdfb40", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "9335f78b36053de9ad56ce7fd7b88e6dc8299498cac37df98b38df561ecdfb40", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "9335f78b36053de9ad56ce7fd7b88e6dc8299498cac37df98b38df561ecdfb40", kill_on_drop: false }`
[INFO] [stdout] 9335f78b36053de9ad56ce7fd7b88e6dc8299498cac37df98b38df561ecdfb40
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-19/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-19/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] fec75edac5f10dec235ef496aed277a7a940a9cd6604aa52af9f3ed9caccae79
[INFO] running `Command { std: "docker" "start" "-a" "fec75edac5f10dec235ef496aed277a7a940a9cd6604aa52af9f3ed9caccae79", 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 hackfn v0.1.7 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 6.59s
[INFO] running `Command { std: "docker" "inspect" "fec75edac5f10dec235ef496aed277a7a940a9cd6604aa52af9f3ed9caccae79", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "fec75edac5f10dec235ef496aed277a7a940a9cd6604aa52af9f3ed9caccae79", kill_on_drop: false }`
[INFO] [stdout] fec75edac5f10dec235ef496aed277a7a940a9cd6604aa52af9f3ed9caccae79
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-19/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-19/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" "--frozen" "--message-format=json" "--" "--cfg" "docs_rs_workaround" "-Z" "unstable-options" "--document-private-items", kill_on_drop: false }`
[INFO] [stdout] f6480dc745e2f2bb931146d1a47aec9244b0c3365ba6a289ee6ab18d45cf6796
[INFO] running `Command { std: "docker" "start" "-a" "f6480dc745e2f2bb931146d1a47aec9244b0c3365ba6a289ee6ab18d45cf6796", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[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 hackfn v0.1.7 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 3.90s
[INFO] running `Command { std: "docker" "inspect" "f6480dc745e2f2bb931146d1a47aec9244b0c3365ba6a289ee6ab18d45cf6796", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "f6480dc745e2f2bb931146d1a47aec9244b0c3365ba6a289ee6ab18d45cf6796", kill_on_drop: false }`
[INFO] [stdout] f6480dc745e2f2bb931146d1a47aec9244b0c3365ba6a289ee6ab18d45cf6796