[INFO] fetching crate foreback 1.1.1...
[INFO] documenting foreback-1.1.1 against 1.61.0 for beta-1.62-rustdoc-1
[INFO] extracting crate foreback 1.1.1 into /workspace/builds/worker-79/source
[INFO] validating manifest of crates.io crate foreback 1.1.1 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 foreback 1.1.1
[INFO] finished tweaking crates.io crate foreback 1.1.1
[INFO] tweaked toml for crates.io crate foreback 1.1.1 written to /workspace/builds/worker-79/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] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-79/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-79/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] b7d595489c3a3ec618e864b77e6cce35fa99f2ee1ed58d95e369711a8c93281f
[INFO] running `Command { std: "docker" "start" "-a" "b7d595489c3a3ec618e864b77e6cce35fa99f2ee1ed58d95e369711a8c93281f", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "b7d595489c3a3ec618e864b77e6cce35fa99f2ee1ed58d95e369711a8c93281f", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "b7d595489c3a3ec618e864b77e6cce35fa99f2ee1ed58d95e369711a8c93281f", kill_on_drop: false }`
[INFO] [stdout] b7d595489c3a3ec618e864b77e6cce35fa99f2ee1ed58d95e369711a8c93281f
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-79/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-79/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] 19fe543aab451d02a82955040142aadf02257b71670340a54ff18753d2a537ac
[INFO] running `Command { std: "docker" "start" "-a" "19fe543aab451d02a82955040142aadf02257b71670340a54ff18753d2a537ac", kill_on_drop: false }`
[INFO] [stderr]    Compiling proc-macro2 v1.0.39
[INFO] [stderr]    Compiling unicode-ident v1.0.0
[INFO] [stderr]    Compiling syn v1.0.95
[INFO] [stderr]    Compiling futures-core v0.3.21
[INFO] [stderr]    Compiling quote v1.0.18
[INFO] [stderr]    Compiling pin-project-internal v1.0.10
[INFO] [stderr]     Checking pin-project v1.0.10
[INFO] [stderr]  Documenting foreback v1.1.1 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 9.42s
[INFO] running `Command { std: "docker" "inspect" "19fe543aab451d02a82955040142aadf02257b71670340a54ff18753d2a537ac", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "19fe543aab451d02a82955040142aadf02257b71670340a54ff18753d2a537ac", kill_on_drop: false }`
[INFO] [stdout] 19fe543aab451d02a82955040142aadf02257b71670340a54ff18753d2a537ac
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-79/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-79/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] 06ec4001f8a12ab624d8f676d0f6a2d7cf86152469e815f2c831f74810027eec
[INFO] running `Command { std: "docker" "start" "-a" "06ec4001f8a12ab624d8f676d0f6a2d7cf86152469e815f2c831f74810027eec", kill_on_drop: false }`
[INFO] [stderr]    Compiling proc-macro2 v1.0.39
[INFO] [stderr]    Compiling unicode-ident v1.0.0
[INFO] [stderr]    Compiling syn v1.0.95
[INFO] [stderr]    Compiling futures-core v0.3.21
[INFO] [stderr]    Compiling quote v1.0.18
[INFO] [stderr]    Compiling pin-project-internal v1.0.10
[INFO] [stderr]     Checking pin-project v1.0.10
[INFO] [stderr]  Documenting foreback v1.1.1 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 11.50s
[INFO] running `Command { std: "docker" "inspect" "06ec4001f8a12ab624d8f676d0f6a2d7cf86152469e815f2c831f74810027eec", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "06ec4001f8a12ab624d8f676d0f6a2d7cf86152469e815f2c831f74810027eec", kill_on_drop: false }`
[INFO] [stdout] 06ec4001f8a12ab624d8f676d0f6a2d7cf86152469e815f2c831f74810027eec