[INFO] fetching crate npnc 0.2.1...
[INFO] documenting npnc-0.2.1 against 1.61.0 for beta-1.62-rustdoc-1
[INFO] extracting crate npnc 0.2.1 into /workspace/builds/worker-7/source
[INFO] validating manifest of crates.io crate npnc 0.2.1 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 npnc 0.2.1
[INFO] removed 0 missing tests
[INFO] finished tweaking crates.io crate npnc 0.2.1
[INFO] tweaked toml for crates.io crate npnc 0.2.1 written to /workspace/builds/worker-7/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] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded hazard v0.3.1
[INFO] [stderr]   Downloaded queuecheck v0.1.1
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-7/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-7/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] 1ce204cfd9fcf0e87dbef0710ebdf26824f55286dba017715bfbff80eb37d479
[INFO] running `Command { std: "docker" "start" "-a" "1ce204cfd9fcf0e87dbef0710ebdf26824f55286dba017715bfbff80eb37d479", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "1ce204cfd9fcf0e87dbef0710ebdf26824f55286dba017715bfbff80eb37d479", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "1ce204cfd9fcf0e87dbef0710ebdf26824f55286dba017715bfbff80eb37d479", kill_on_drop: false }`
[INFO] [stdout] 1ce204cfd9fcf0e87dbef0710ebdf26824f55286dba017715bfbff80eb37d479
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-7/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-7/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] dc2e14e49e8e04c4166b7b76c1508742fd846922f14def6cb0eff85e66efdb8d
[INFO] running `Command { std: "docker" "start" "-a" "dc2e14e49e8e04c4166b7b76c1508742fd846922f14def6cb0eff85e66efdb8d", kill_on_drop: false }`
[INFO] [stderr]     Checking hazard v0.3.1
[INFO] [stderr]  Documenting npnc v0.2.1 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 1.53s
[INFO] running `Command { std: "docker" "inspect" "dc2e14e49e8e04c4166b7b76c1508742fd846922f14def6cb0eff85e66efdb8d", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "dc2e14e49e8e04c4166b7b76c1508742fd846922f14def6cb0eff85e66efdb8d", kill_on_drop: false }`
[INFO] [stdout] dc2e14e49e8e04c4166b7b76c1508742fd846922f14def6cb0eff85e66efdb8d
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-7/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-7/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] 87dc66a0759324301dffaffe01c2aeeaa303fbe7f045f9094246fac3d3e1f87d
[INFO] running `Command { std: "docker" "start" "-a" "87dc66a0759324301dffaffe01c2aeeaa303fbe7f045f9094246fac3d3e1f87d", kill_on_drop: false }`
[INFO] [stderr]     Checking hazard v0.3.1
[INFO] [stderr]  Documenting npnc v0.2.1 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 1.01s
[INFO] running `Command { std: "docker" "inspect" "87dc66a0759324301dffaffe01c2aeeaa303fbe7f045f9094246fac3d3e1f87d", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "87dc66a0759324301dffaffe01c2aeeaa303fbe7f045f9094246fac3d3e1f87d", kill_on_drop: false }`
[INFO] [stdout] 87dc66a0759324301dffaffe01c2aeeaa303fbe7f045f9094246fac3d3e1f87d