[INFO] fetching crate marktwin 0.4.2...
[INFO] documenting marktwin-0.4.2 against 1.61.0 for beta-1.62-rustdoc-1
[INFO] extracting crate marktwin 0.4.2 into /workspace/builds/worker-12/source
[INFO] validating manifest of crates.io crate marktwin 0.4.2 on toolchain 1.61.0
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+1.61.0" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking crates.io crate marktwin 0.4.2
[INFO] finished tweaking crates.io crate marktwin 0.4.2
[INFO] tweaked toml for crates.io crate marktwin 0.4.2 written to /workspace/builds/worker-12/source/Cargo.toml
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+1.61.0" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update", kill_on_drop: false }`
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+1.61.0" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded html-escape v0.2.11
[INFO] [stderr]   Downloaded rowan v0.14.1
[INFO] [stderr]   Downloaded smol_str v0.1.23
[INFO] [stderr]   Downloaded test-generator v0.3.0
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-12/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-12/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" "+1.61.0" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 953c1960dde6d276efa135e2d3f5257ec9842c88eba43a6f1c3234e0f7ea43db
[INFO] running `Command { std: "docker" "start" "-a" "953c1960dde6d276efa135e2d3f5257ec9842c88eba43a6f1c3234e0f7ea43db", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "953c1960dde6d276efa135e2d3f5257ec9842c88eba43a6f1c3234e0f7ea43db", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "953c1960dde6d276efa135e2d3f5257ec9842c88eba43a6f1c3234e0f7ea43db", kill_on_drop: false }`
[INFO] [stdout] 953c1960dde6d276efa135e2d3f5257ec9842c88eba43a6f1c3234e0f7ea43db
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-12/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-12/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" "+1.61.0" "doc" "--frozen" "--no-deps" "--document-private-items" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 6d70a466b4cf1ef11764351f2e10280f45a90469ba3b5050359f903402af8082
[INFO] running `Command { std: "docker" "start" "-a" "6d70a466b4cf1ef11764351f2e10280f45a90469ba3b5050359f903402af8082", kill_on_drop: false }`
[INFO] [stderr]    Compiling proc-macro2 v1.0.39
[INFO] [stderr]    Compiling unicode-ident v1.0.0
[INFO] [stderr]    Compiling serde_derive v1.0.137
[INFO] [stderr]    Compiling serde v1.0.137
[INFO] [stderr]    Compiling autocfg v1.1.0
[INFO] [stderr]    Compiling serde_json v1.0.81
[INFO] [stderr]     Checking hashbrown v0.11.2
[INFO] [stderr]     Checking rustc-hash v1.1.0
[INFO] [stderr]     Checking itoa v1.0.2
[INFO] [stderr]     Checking countme v2.0.4
[INFO] [stderr]     Checking ryu v1.0.10
[INFO] [stderr]     Checking utf8-width v0.1.6
[INFO] [stderr]     Checking text-size v1.1.0
[INFO] [stderr]     Checking drop_bomb v0.1.5
[INFO] [stderr]     Checking html-escape v0.2.11
[INFO] [stderr]    Compiling memoffset v0.6.5
[INFO] [stderr]    Compiling quote v1.0.18
[INFO] [stderr]     Checking rowan v0.14.1
[INFO] [stderr]    Compiling syn v1.0.95
[INFO] [stderr]    Compiling variant_count v1.1.0
[INFO] [stderr]     Checking smol_str v0.1.23
[INFO] [stderr]  Documenting marktwin v0.4.2 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 15.04s
[INFO] running `Command { std: "docker" "inspect" "6d70a466b4cf1ef11764351f2e10280f45a90469ba3b5050359f903402af8082", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "6d70a466b4cf1ef11764351f2e10280f45a90469ba3b5050359f903402af8082", kill_on_drop: false }`
[INFO] [stdout] 6d70a466b4cf1ef11764351f2e10280f45a90469ba3b5050359f903402af8082
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-12/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-12/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" "+1.61.0" "rustdoc" "--lib" "-Zrustdoc-map" "--frozen" "--message-format=json" "--" "-Z" "unstable-options" "--document-private-items", kill_on_drop: false }`
[INFO] [stdout] 2b46f89f32c5536a80350a7098b1486b5bc6a7a0c9062884f1e5cb2bd9a9dd8f
[INFO] running `Command { std: "docker" "start" "-a" "2b46f89f32c5536a80350a7098b1486b5bc6a7a0c9062884f1e5cb2bd9a9dd8f", kill_on_drop: false }`
[INFO] [stderr]    Compiling proc-macro2 v1.0.39
[INFO] [stderr]    Compiling unicode-ident v1.0.0
[INFO] [stderr]    Compiling syn v1.0.95
[INFO] [stderr]    Compiling serde_derive v1.0.137
[INFO] [stderr]    Compiling serde v1.0.137
[INFO] [stderr]    Compiling autocfg v1.1.0
[INFO] [stderr]    Compiling serde_json v1.0.81
[INFO] [stderr]     Checking countme v2.0.4
[INFO] [stderr]     Checking ryu v1.0.10
[INFO] [stderr]     Checking text-size v1.1.0
[INFO] [stderr]     Checking utf8-width v0.1.6
[INFO] [stderr]     Checking itoa v1.0.2
[INFO] [stderr]     Checking rustc-hash v1.1.0
[INFO] [stderr]     Checking hashbrown v0.11.2
[INFO] [stderr]     Checking drop_bomb v0.1.5
[INFO] [stderr]     Checking html-escape v0.2.11
[INFO] [stderr]    Compiling memoffset v0.6.5
[INFO] [stderr]    Compiling quote v1.0.18
[INFO] [stderr]     Checking rowan v0.14.1
[INFO] [stderr]    Compiling variant_count v1.1.0
[INFO] [stderr]     Checking smol_str v0.1.23
[INFO] [stderr]  Documenting marktwin v0.4.2 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 14.29s
[INFO] running `Command { std: "docker" "inspect" "2b46f89f32c5536a80350a7098b1486b5bc6a7a0c9062884f1e5cb2bd9a9dd8f", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "2b46f89f32c5536a80350a7098b1486b5bc6a7a0c9062884f1e5cb2bd9a9dd8f", kill_on_drop: false }`
[INFO] [stdout] 2b46f89f32c5536a80350a7098b1486b5bc6a7a0c9062884f1e5cb2bd9a9dd8f