[INFO] fetching crate digger 0.1.0...
[INFO] documenting digger-0.1.0 against beta-2022-05-20 for beta-1.62-rustdoc-1
[INFO] extracting crate digger 0.1.0 into /workspace/builds/worker-75/source
[INFO] validating manifest of crates.io crate digger 0.1.0 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 digger 0.1.0
[INFO] finished tweaking crates.io crate digger 0.1.0
[INFO] tweaked toml for crates.io crate digger 0.1.0 written to /workspace/builds/worker-75/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] [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-75/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-75/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] a2f491f282c4597558d52afa52afd4369e63341fdb3c1f4a7b61490a7340fdac
[INFO] running `Command { std: "docker" "start" "-a" "a2f491f282c4597558d52afa52afd4369e63341fdb3c1f4a7b61490a7340fdac", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "a2f491f282c4597558d52afa52afd4369e63341fdb3c1f4a7b61490a7340fdac", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "a2f491f282c4597558d52afa52afd4369e63341fdb3c1f4a7b61490a7340fdac", kill_on_drop: false }`
[INFO] [stdout] a2f491f282c4597558d52afa52afd4369e63341fdb3c1f4a7b61490a7340fdac
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-75/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-75/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] e6467ec71b57a0e8c8d83021f0b43d77688f21411120b043004678180c4622e6
[INFO] running `Command { std: "docker" "start" "-a" "e6467ec71b57a0e8c8d83021f0b43d77688f21411120b043004678180c4622e6", kill_on_drop: false }`
[INFO] [stderr]  Documenting digger v0.1.0 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 1.60s
[INFO] running `Command { std: "docker" "inspect" "e6467ec71b57a0e8c8d83021f0b43d77688f21411120b043004678180c4622e6", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "e6467ec71b57a0e8c8d83021f0b43d77688f21411120b043004678180c4622e6", kill_on_drop: false }`
[INFO] [stdout] e6467ec71b57a0e8c8d83021f0b43d77688f21411120b043004678180c4622e6
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-75/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-75/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" "--features" "serde_json" "--no-default-features" "--frozen" "--message-format=json" "--" "-Z" "unstable-options" "--document-private-items", kill_on_drop: false }`
[INFO] [stdout] 87ee1a4211116ebe57348b78cec3e8eb6a190e1c01edfa5e4cc5bd04acc5591e
[INFO] running `Command { std: "docker" "start" "-a" "87ee1a4211116ebe57348b78cec3e8eb6a190e1c01edfa5e4cc5bd04acc5591e", kill_on_drop: false }`
[INFO] [stderr]    Compiling serde v1.0.137
[INFO] [stderr]    Compiling serde_json v1.0.81
[INFO] [stderr]     Checking itoa v1.0.2
[INFO] [stderr]     Checking ryu v1.0.10
[INFO] [stderr]  Documenting digger v0.1.0 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 5.95s
[INFO] running `Command { std: "docker" "inspect" "87ee1a4211116ebe57348b78cec3e8eb6a190e1c01edfa5e4cc5bd04acc5591e", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "87ee1a4211116ebe57348b78cec3e8eb6a190e1c01edfa5e4cc5bd04acc5591e", kill_on_drop: false }`
[INFO] [stdout] 87ee1a4211116ebe57348b78cec3e8eb6a190e1c01edfa5e4cc5bd04acc5591e