[INFO] fetching crate c_api_prefix 0.1.0...
[INFO] documenting c_api_prefix-0.1.0 against beta-2022-05-20 for beta-1.62-rustdoc-1
[INFO] extracting crate c_api_prefix 0.1.0 into /workspace/builds/worker-74/source
[INFO] validating manifest of crates.io crate c_api_prefix 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 c_api_prefix 0.1.0
[INFO] finished tweaking crates.io crate c_api_prefix 0.1.0
[INFO] tweaked toml for crates.io crate c_api_prefix 0.1.0 written to /workspace/builds/worker-74/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] [stderr]     Blocking waiting for file lock on package cache
[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-74/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-74/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] b9a360f939d557fa181d3b0d153eecb839844877613f10271f199d28ce7202e5
[INFO] running `Command { std: "docker" "start" "-a" "b9a360f939d557fa181d3b0d153eecb839844877613f10271f199d28ce7202e5", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "b9a360f939d557fa181d3b0d153eecb839844877613f10271f199d28ce7202e5", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "b9a360f939d557fa181d3b0d153eecb839844877613f10271f199d28ce7202e5", kill_on_drop: false }`
[INFO] [stdout] b9a360f939d557fa181d3b0d153eecb839844877613f10271f199d28ce7202e5
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-74/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-74/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] 58b71347105592ec38d2bbf0bc12a0f8ea36972b22de52fb2b42c7a1c0ff2bab
[INFO] running `Command { std: "docker" "start" "-a" "58b71347105592ec38d2bbf0bc12a0f8ea36972b22de52fb2b42c7a1c0ff2bab", kill_on_drop: false }`
[INFO] [stderr]     Checking unicode-ident v1.0.0
[INFO] [stderr]    Compiling syn v1.0.95
[INFO] [stderr]     Checking proc-macro2 v1.0.39
[INFO] [stderr]     Checking quote v1.0.18
[INFO] [stderr]  Documenting c_api_prefix v0.1.0 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 3.88s
[INFO] running `Command { std: "docker" "inspect" "58b71347105592ec38d2bbf0bc12a0f8ea36972b22de52fb2b42c7a1c0ff2bab", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "58b71347105592ec38d2bbf0bc12a0f8ea36972b22de52fb2b42c7a1c0ff2bab", kill_on_drop: false }`
[INFO] [stdout] 58b71347105592ec38d2bbf0bc12a0f8ea36972b22de52fb2b42c7a1c0ff2bab
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-74/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-74/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] f5c5fcaa157e7bd3a18d7954e0df8812ef0c905d8c180b664ce213d072da8602
[INFO] running `Command { std: "docker" "start" "-a" "f5c5fcaa157e7bd3a18d7954e0df8812ef0c905d8c180b664ce213d072da8602", kill_on_drop: false }`
[INFO] [stderr]    Compiling proc-macro2 v1.0.39
[INFO] [stderr]     Checking unicode-ident v1.0.0
[INFO] [stderr]    Compiling syn v1.0.95
[INFO] [stderr]     Checking quote v1.0.18
[INFO] [stderr]  Documenting c_api_prefix v0.1.0 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 5.05s
[INFO] running `Command { std: "docker" "inspect" "f5c5fcaa157e7bd3a18d7954e0df8812ef0c905d8c180b664ce213d072da8602", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "f5c5fcaa157e7bd3a18d7954e0df8812ef0c905d8c180b664ce213d072da8602", kill_on_drop: false }`
[INFO] [stdout] f5c5fcaa157e7bd3a18d7954e0df8812ef0c905d8c180b664ce213d072da8602