[INFO] fetching crate rotating-buffer 0.2.0...
[INFO] documenting rotating-buffer-0.2.0 against beta-2022-05-20 for beta-1.62-rustdoc-1
[INFO] extracting crate rotating-buffer 0.2.0 into /workspace/builds/worker-15/source
[INFO] validating manifest of crates.io crate rotating-buffer 0.2.0 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 rotating-buffer 0.2.0
[INFO] finished tweaking crates.io crate rotating-buffer 0.2.0
[INFO] tweaked toml for crates.io crate rotating-buffer 0.2.0 written to /workspace/builds/worker-15/source/Cargo.toml
[INFO] crate crates.io crate rotating-buffer 0.2.0 already has a lockfile, it will not be regenerated
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+beta-2022-05-20" "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-15/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-15/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] 9f064e04e1eb29ba2e1e5357916c82ebfac3731a5a70c0374f4a918bdad7a9db
[INFO] running `Command { std: "docker" "start" "-a" "9f064e04e1eb29ba2e1e5357916c82ebfac3731a5a70c0374f4a918bdad7a9db", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "9f064e04e1eb29ba2e1e5357916c82ebfac3731a5a70c0374f4a918bdad7a9db", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "9f064e04e1eb29ba2e1e5357916c82ebfac3731a5a70c0374f4a918bdad7a9db", kill_on_drop: false }`
[INFO] [stdout] 9f064e04e1eb29ba2e1e5357916c82ebfac3731a5a70c0374f4a918bdad7a9db
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-15/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-15/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] 6ecc0225a5a23f9446dd50296d6b40033586c315d6d406cd3eb83761ba3489f0
[INFO] running `Command { std: "docker" "start" "-a" "6ecc0225a5a23f9446dd50296d6b40033586c315d6d406cd3eb83761ba3489f0", kill_on_drop: false }`
[INFO] [stderr]  Documenting rotating-buffer v0.2.0 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.69s
[INFO] running `Command { std: "docker" "inspect" "6ecc0225a5a23f9446dd50296d6b40033586c315d6d406cd3eb83761ba3489f0", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "6ecc0225a5a23f9446dd50296d6b40033586c315d6d406cd3eb83761ba3489f0", kill_on_drop: false }`
[INFO] [stdout] 6ecc0225a5a23f9446dd50296d6b40033586c315d6d406cd3eb83761ba3489f0
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-15/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-15/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] e4c78b1e779f5bff79518ec86753c6e01c2c63f0f2a1f54475e3d6afd6076aac
[INFO] running `Command { std: "docker" "start" "-a" "e4c78b1e779f5bff79518ec86753c6e01c2c63f0f2a1f54475e3d6afd6076aac", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]  Documenting rotating-buffer v0.2.0 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.80s
[INFO] running `Command { std: "docker" "inspect" "e4c78b1e779f5bff79518ec86753c6e01c2c63f0f2a1f54475e3d6afd6076aac", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "e4c78b1e779f5bff79518ec86753c6e01c2c63f0f2a1f54475e3d6afd6076aac", kill_on_drop: false }`
[INFO] [stdout] e4c78b1e779f5bff79518ec86753c6e01c2c63f0f2a1f54475e3d6afd6076aac