[INFO] fetching crate flex-error 0.4.4...
[INFO] documenting flex-error-0.4.4 against beta-2022-05-20 for beta-1.62-rustdoc-1
[INFO] extracting crate flex-error 0.4.4 into /workspace/builds/worker-56/source
[INFO] validating manifest of crates.io crate flex-error 0.4.4 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 flex-error 0.4.4
[INFO] finished tweaking crates.io crate flex-error 0.4.4
[INFO] tweaked toml for crates.io crate flex-error 0.4.4 written to /workspace/builds/worker-56/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] [stderr]     Blocking waiting for file lock on package cache
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-56/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-56/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] 448b8f58475ef2b5d276db09dd32255a4baf3ffdf3aefc9c0c4477c7aba64708
[INFO] running `Command { std: "docker" "start" "-a" "448b8f58475ef2b5d276db09dd32255a4baf3ffdf3aefc9c0c4477c7aba64708", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "448b8f58475ef2b5d276db09dd32255a4baf3ffdf3aefc9c0c4477c7aba64708", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "448b8f58475ef2b5d276db09dd32255a4baf3ffdf3aefc9c0c4477c7aba64708", kill_on_drop: false }`
[INFO] [stdout] 448b8f58475ef2b5d276db09dd32255a4baf3ffdf3aefc9c0c4477c7aba64708
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-56/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-56/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] 2c0890c84470643b3083f125e125a82e4592ed25de4c7097b7dba7e542b3e3fc
[INFO] running `Command { std: "docker" "start" "-a" "2c0890c84470643b3083f125e125a82e4592ed25de4c7097b7dba7e542b3e3fc", kill_on_drop: false }`
[INFO] [stderr]    Compiling anyhow v1.0.57
[INFO] [stderr]    Compiling eyre v0.6.8
[INFO] [stderr]     Checking indenter v0.3.3
[INFO] [stderr]     Checking once_cell v1.12.0
[INFO] [stderr]    Compiling paste v1.0.7
[INFO] [stderr]  Documenting flex-error v0.4.4 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 5.46s
[INFO] running `Command { std: "docker" "inspect" "2c0890c84470643b3083f125e125a82e4592ed25de4c7097b7dba7e542b3e3fc", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "2c0890c84470643b3083f125e125a82e4592ed25de4c7097b7dba7e542b3e3fc", kill_on_drop: false }`
[INFO] [stdout] 2c0890c84470643b3083f125e125a82e4592ed25de4c7097b7dba7e542b3e3fc
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-56/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-56/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] d8aeb7c8db366930d327b50a6b7f90e9291fa60b435fe8c801670e22ccd560d6
[INFO] running `Command { std: "docker" "start" "-a" "d8aeb7c8db366930d327b50a6b7f90e9291fa60b435fe8c801670e22ccd560d6", kill_on_drop: false }`
[INFO] [stderr]    Compiling eyre v0.6.8
[INFO] [stderr]    Compiling anyhow v1.0.57
[INFO] [stderr]     Checking indenter v0.3.3
[INFO] [stderr]     Checking once_cell v1.12.0
[INFO] [stderr]    Compiling paste v1.0.7
[INFO] [stderr]  Documenting flex-error v0.4.4 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 2.87s
[INFO] running `Command { std: "docker" "inspect" "d8aeb7c8db366930d327b50a6b7f90e9291fa60b435fe8c801670e22ccd560d6", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "d8aeb7c8db366930d327b50a6b7f90e9291fa60b435fe8c801670e22ccd560d6", kill_on_drop: false }`
[INFO] [stdout] d8aeb7c8db366930d327b50a6b7f90e9291fa60b435fe8c801670e22ccd560d6