[INFO] fetching crate mathper 0.1.2...
[INFO] documenting mathper-0.1.2 against 1.61.0 for beta-1.62-rustdoc-1
[INFO] extracting crate mathper 0.1.2 into /workspace/builds/worker-8/source
[INFO] validating manifest of crates.io crate mathper 0.1.2 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 mathper 0.1.2
[INFO] finished tweaking crates.io crate mathper 0.1.2
[INFO] tweaked toml for crates.io crate mathper 0.1.2 written to /workspace/builds/worker-8/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] [stderr]     Blocking waiting for file lock on package cache
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+1.61.0" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[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:d190cb871061d98bc6d0581d85cb2ecb09a0f8a142ba5463de30be9999fc3251" "/opt/rustwide/cargo-home/bin/cargo" "+1.61.0" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 2e91b70fc7629d6d6aec1c6f9029c40033fb03fd0e1d533336297256c9444b52
[INFO] running `Command { std: "docker" "start" "-a" "2e91b70fc7629d6d6aec1c6f9029c40033fb03fd0e1d533336297256c9444b52", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "2e91b70fc7629d6d6aec1c6f9029c40033fb03fd0e1d533336297256c9444b52", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "2e91b70fc7629d6d6aec1c6f9029c40033fb03fd0e1d533336297256c9444b52", kill_on_drop: false }`
[INFO] [stdout] 2e91b70fc7629d6d6aec1c6f9029c40033fb03fd0e1d533336297256c9444b52
[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: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] cb77d306205c11f48ff9f8f5471bb60b7b1817ccdf2760e99970dbbf1c25bab8
[INFO] running `Command { std: "docker" "start" "-a" "cb77d306205c11f48ff9f8f5471bb60b7b1817ccdf2760e99970dbbf1c25bab8", 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] [stderr]  Documenting mathper v0.1.2 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 1.05s
[INFO] running `Command { std: "docker" "inspect" "cb77d306205c11f48ff9f8f5471bb60b7b1817ccdf2760e99970dbbf1c25bab8", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "cb77d306205c11f48ff9f8f5471bb60b7b1817ccdf2760e99970dbbf1c25bab8", kill_on_drop: false }`
[INFO] [stdout] cb77d306205c11f48ff9f8f5471bb60b7b1817ccdf2760e99970dbbf1c25bab8
[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" "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" "+1.61.0" "rustdoc" "--lib" "-Zrustdoc-map" "--frozen" "--message-format=json" "--" "-Z" "unstable-options" "--document-private-items", kill_on_drop: false }`
[INFO] [stdout] 628473eb922599cb746f2ce0842afc061d1fba8fe9d18b6dceb76317dc20d6cc
[INFO] running `Command { std: "docker" "start" "-a" "628473eb922599cb746f2ce0842afc061d1fba8fe9d18b6dceb76317dc20d6cc", kill_on_drop: false }`
[INFO] [stderr]  Documenting mathper v0.1.2 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.90s
[INFO] running `Command { std: "docker" "inspect" "628473eb922599cb746f2ce0842afc061d1fba8fe9d18b6dceb76317dc20d6cc", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "628473eb922599cb746f2ce0842afc061d1fba8fe9d18b6dceb76317dc20d6cc", kill_on_drop: false }`
[INFO] [stdout] 628473eb922599cb746f2ce0842afc061d1fba8fe9d18b6dceb76317dc20d6cc