[INFO] fetching crate ethers-structopt 0.1.0...
[INFO] documenting ethers-structopt-0.1.0 against beta-2021-09-08 for beta-1.56-rustdoc-1
[INFO] extracting crate ethers-structopt 0.1.0 into /workspace/builds/worker-8/source
[INFO] validating manifest of crates.io crate ethers-structopt 0.1.0 on toolchain beta-2021-09-08
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+beta-2021-09-08" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking crates.io crate ethers-structopt 0.1.0
[INFO] finished tweaking crates.io crate ethers-structopt 0.1.0
[INFO] tweaked toml for crates.io crate ethers-structopt 0.1.0 written to /workspace/builds/worker-8/source/Cargo.toml
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+beta-2021-09-08" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update", kill_on_drop: false }`
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+beta-2021-09-08" "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-8/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-8/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:a89201d6b5b9fd45c15d5952ece0a0129e7e80cb26ec023fd59cf09bc26f1604" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2021-09-08" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 06814588865b86b4e5d2f11246c0b1750b0735573b4bade298dcfb3a6bd60714
[INFO] running `Command { std: "docker" "start" "-a" "06814588865b86b4e5d2f11246c0b1750b0735573b4bade298dcfb3a6bd60714", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "06814588865b86b4e5d2f11246c0b1750b0735573b4bade298dcfb3a6bd60714", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "06814588865b86b4e5d2f11246c0b1750b0735573b4bade298dcfb3a6bd60714", kill_on_drop: false }`
[INFO] [stdout] 06814588865b86b4e5d2f11246c0b1750b0735573b4bade298dcfb3a6bd60714
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-8/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-8/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:a89201d6b5b9fd45c15d5952ece0a0129e7e80cb26ec023fd59cf09bc26f1604" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2021-09-08" "doc" "--frozen" "--no-deps" "--document-private-items" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 8bae415d490901121bb976db3e193c6bf8828a1f289af077d41a22ec6bb98c8c
[INFO] running `Command { std: "docker" "start" "-a" "8bae415d490901121bb976db3e193c6bf8828a1f289af077d41a22ec6bb98c8c", kill_on_drop: false }`
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[INFO] [stderr]  Documenting ethers-structopt v0.1.0 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 2m 11s
[INFO] running `Command { std: "docker" "inspect" "8bae415d490901121bb976db3e193c6bf8828a1f289af077d41a22ec6bb98c8c", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "8bae415d490901121bb976db3e193c6bf8828a1f289af077d41a22ec6bb98c8c", kill_on_drop: false }`
[INFO] [stdout] 8bae415d490901121bb976db3e193c6bf8828a1f289af077d41a22ec6bb98c8c