[INFO] fetching crate tail 0.3.0...
[INFO] documenting tail-0.3.0 against beta-2022-05-20 for beta-1.62-rustdoc-1
[INFO] extracting crate tail 0.3.0 into /workspace/builds/worker-39/source
[INFO] validating manifest of crates.io crate tail 0.3.0 on toolchain beta-2022-05-20
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+beta-2022-05-20" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking crates.io crate tail 0.3.0
[INFO] finished tweaking crates.io crate tail 0.3.0
[INFO] tweaked toml for crates.io crate tail 0.3.0 written to /workspace/builds/worker-39/source/Cargo.toml
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+beta-2022-05-20" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update", kill_on_drop: false }`
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+beta-2022-05-20" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-39/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-39/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" "+beta-2022-05-20" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 10889753146af1de1c18cb9f8357fa986208a205df1bec887a084efe0c74f6eb
[INFO] running `Command { std: "docker" "start" "-a" "10889753146af1de1c18cb9f8357fa986208a205df1bec887a084efe0c74f6eb", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "10889753146af1de1c18cb9f8357fa986208a205df1bec887a084efe0c74f6eb", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "10889753146af1de1c18cb9f8357fa986208a205df1bec887a084efe0c74f6eb", kill_on_drop: false }`
[INFO] [stdout] 10889753146af1de1c18cb9f8357fa986208a205df1bec887a084efe0c74f6eb
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-39/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-39/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" "+beta-2022-05-20" "doc" "--frozen" "--no-deps" "--document-private-items" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] ef91a272ae145bde4c82202c2937e9e912aecb2a811365104f946acb21b0aa2c
[INFO] running `Command { std: "docker" "start" "-a" "ef91a272ae145bde4c82202c2937e9e912aecb2a811365104f946acb21b0aa2c", kill_on_drop: false }`
[INFO] [stderr]    Compiling libc v0.2.126
[INFO] [stderr]     Checking unicode-width v0.1.9
[INFO] [stderr]     Checking futures v0.1.31
[INFO] [stderr]     Checking bitflags v1.3.2
[INFO] [stderr]     Checking getopts v0.2.21
[INFO] [stderr]     Checking inotify-sys v0.1.5
[INFO] [stderr]     Checking inotify v0.5.1
[INFO] [stderr]  Documenting tail v0.3.0 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 2.39s
[INFO] running `Command { std: "docker" "inspect" "ef91a272ae145bde4c82202c2937e9e912aecb2a811365104f946acb21b0aa2c", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "ef91a272ae145bde4c82202c2937e9e912aecb2a811365104f946acb21b0aa2c", kill_on_drop: false }`
[INFO] [stdout] ef91a272ae145bde4c82202c2937e9e912aecb2a811365104f946acb21b0aa2c
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-39/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-39/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" "+beta-2022-05-20" "rustdoc" "--lib" "-Zrustdoc-map" "--frozen" "--message-format=json" "--" "-Z" "unstable-options" "--document-private-items", kill_on_drop: false }`
[INFO] [stdout] bf4563290c9b950b2fc3c8e260b33008e1958f4a5f603bee3efc8f6b09f716cf
[INFO] running `Command { std: "docker" "start" "-a" "bf4563290c9b950b2fc3c8e260b33008e1958f4a5f603bee3efc8f6b09f716cf", kill_on_drop: false }`
[INFO] [stderr]    Compiling libc v0.2.126
[INFO] [stderr]     Checking bitflags v1.3.2
[INFO] [stderr]     Checking unicode-width v0.1.9
[INFO] [stderr]     Checking futures v0.1.31
[INFO] [stderr]     Checking getopts v0.2.21
[INFO] [stderr]     Checking inotify-sys v0.1.5
[INFO] [stderr]     Checking inotify v0.5.1
[INFO] [stderr]  Documenting tail v0.3.0 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 2.47s
[INFO] running `Command { std: "docker" "inspect" "bf4563290c9b950b2fc3c8e260b33008e1958f4a5f603bee3efc8f6b09f716cf", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "bf4563290c9b950b2fc3c8e260b33008e1958f4a5f603bee3efc8f6b09f716cf", kill_on_drop: false }`
[INFO] [stdout] bf4563290c9b950b2fc3c8e260b33008e1958f4a5f603bee3efc8f6b09f716cf