[INFO] fetching crate merkle-tree-stream 0.12.1...
[INFO] documenting merkle-tree-stream-0.12.1 against beta-2022-05-20 for beta-1.62-rustdoc-1
[INFO] extracting crate merkle-tree-stream 0.12.1 into /workspace/builds/worker-3/source
[INFO] validating manifest of crates.io crate merkle-tree-stream 0.12.1 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 merkle-tree-stream 0.12.1
[INFO] finished tweaking crates.io crate merkle-tree-stream 0.12.1
[INFO] tweaked toml for crates.io crate merkle-tree-stream 0.12.1 written to /workspace/builds/worker-3/source/Cargo.toml
[INFO] crate crates.io crate merkle-tree-stream 0.12.1 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] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-3/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-3/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] b417a6e3475153b974a3d18e28b1f66ecd9bd21e271ac99cb7046a06921e527c
[INFO] running `Command { std: "docker" "start" "-a" "b417a6e3475153b974a3d18e28b1f66ecd9bd21e271ac99cb7046a06921e527c", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "b417a6e3475153b974a3d18e28b1f66ecd9bd21e271ac99cb7046a06921e527c", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "b417a6e3475153b974a3d18e28b1f66ecd9bd21e271ac99cb7046a06921e527c", kill_on_drop: false }`
[INFO] [stdout] b417a6e3475153b974a3d18e28b1f66ecd9bd21e271ac99cb7046a06921e527c
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-3/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-3/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] d5d3b78df5ecdd7195c9ef3faebb939ae5537c6f08b74a2d810fceb3fa89744b
[INFO] running `Command { std: "docker" "start" "-a" "d5d3b78df5ecdd7195c9ef3faebb939ae5537c6f08b74a2d810fceb3fa89744b", kill_on_drop: false }`
[INFO] [stderr]     Checking flat-tree v5.0.0
[INFO] [stderr]  Documenting merkle-tree-stream v0.12.1 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 2.00s
[INFO] running `Command { std: "docker" "inspect" "d5d3b78df5ecdd7195c9ef3faebb939ae5537c6f08b74a2d810fceb3fa89744b", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "d5d3b78df5ecdd7195c9ef3faebb939ae5537c6f08b74a2d810fceb3fa89744b", kill_on_drop: false }`
[INFO] [stdout] d5d3b78df5ecdd7195c9ef3faebb939ae5537c6f08b74a2d810fceb3fa89744b
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-3/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-3/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" "RUSTC_BOOTSTRAP=1" "-e" "DOCS_RS=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] 210b7c4e6e7b5e4edb4230f6f6ac383e267f701f2e792c27a1d48c4b79b38860
[INFO] running `Command { std: "docker" "start" "-a" "210b7c4e6e7b5e4edb4230f6f6ac383e267f701f2e792c27a1d48c4b79b38860", kill_on_drop: false }`
[INFO] [stderr]     Checking flat-tree v5.0.0
[INFO] [stderr]  Documenting merkle-tree-stream v0.12.1 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 1.78s
[INFO] running `Command { std: "docker" "inspect" "210b7c4e6e7b5e4edb4230f6f6ac383e267f701f2e792c27a1d48c4b79b38860", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "210b7c4e6e7b5e4edb4230f6f6ac383e267f701f2e792c27a1d48c4b79b38860", kill_on_drop: false }`
[INFO] [stdout] 210b7c4e6e7b5e4edb4230f6f6ac383e267f701f2e792c27a1d48c4b79b38860