[INFO] fetching crate mustache_view 0.1.0...
[INFO] documenting mustache_view-0.1.0 against 1.61.0 for beta-1.62-rustdoc-1
[INFO] extracting crate mustache_view 0.1.0 into /workspace/builds/worker-27/source
[INFO] validating manifest of crates.io crate mustache_view 0.1.0 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 mustache_view 0.1.0
[INFO] finished tweaking crates.io crate mustache_view 0.1.0
[INFO] tweaked toml for crates.io crate mustache_view 0.1.0 written to /workspace/builds/worker-27/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-27/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-27/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] 166bba21fc2331a68e26dc6e9a7894250a8151d13a33a2109cc8c658421fc071
[INFO] running `Command { std: "docker" "start" "-a" "166bba21fc2331a68e26dc6e9a7894250a8151d13a33a2109cc8c658421fc071", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "166bba21fc2331a68e26dc6e9a7894250a8151d13a33a2109cc8c658421fc071", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "166bba21fc2331a68e26dc6e9a7894250a8151d13a33a2109cc8c658421fc071", kill_on_drop: false }`
[INFO] [stdout] 166bba21fc2331a68e26dc6e9a7894250a8151d13a33a2109cc8c658421fc071
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-27/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-27/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] bf15a93d7db82a173fbc4657ea227b06a3d1bcff7b62e4a0081cbb1997548499
[INFO] running `Command { std: "docker" "start" "-a" "bf15a93d7db82a173fbc4657ea227b06a3d1bcff7b62e4a0081cbb1997548499", kill_on_drop: false }`
[INFO] [stderr]    Compiling log v0.4.17
[INFO] [stderr]    Compiling serde v1.0.137
[INFO] [stderr]     Checking cfg-if v1.0.0
[INFO] [stderr]     Checking rustc-serialize v0.3.24
[INFO] [stderr]     Checking log v0.3.9
[INFO] [stderr]     Checking mustache v0.9.0
[INFO] [stderr]  Documenting mustache_view v0.1.0 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 5.39s
[INFO] running `Command { std: "docker" "inspect" "bf15a93d7db82a173fbc4657ea227b06a3d1bcff7b62e4a0081cbb1997548499", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "bf15a93d7db82a173fbc4657ea227b06a3d1bcff7b62e4a0081cbb1997548499", kill_on_drop: false }`
[INFO] [stdout] bf15a93d7db82a173fbc4657ea227b06a3d1bcff7b62e4a0081cbb1997548499
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-27/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-27/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] 0b945964257820a33a169b7e017d167b13ef929902de976335f655a2d5683ffd
[INFO] running `Command { std: "docker" "start" "-a" "0b945964257820a33a169b7e017d167b13ef929902de976335f655a2d5683ffd", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]    Compiling log v0.4.17
[INFO] [stderr]     Checking cfg-if v1.0.0
[INFO] [stderr]    Compiling serde v1.0.137
[INFO] [stderr]     Checking rustc-serialize v0.3.24
[INFO] [stderr]     Checking log v0.3.9
[INFO] [stderr]     Checking mustache v0.9.0
[INFO] [stderr]  Documenting mustache_view v0.1.0 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 6.32s
[INFO] running `Command { std: "docker" "inspect" "0b945964257820a33a169b7e017d167b13ef929902de976335f655a2d5683ffd", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "0b945964257820a33a169b7e017d167b13ef929902de976335f655a2d5683ffd", kill_on_drop: false }`
[INFO] [stdout] 0b945964257820a33a169b7e017d167b13ef929902de976335f655a2d5683ffd