[INFO] fetching crate second_order_ode 0.1.0...
[INFO] documenting second_order_ode-0.1.0 against beta-2020-08-29 for beta-1.47-rustdoc-1
[INFO] extracting crate second_order_ode 0.1.0 into /workspace/builds/worker-6/source
[INFO] validating manifest of crates.io crate second_order_ode 0.1.0 on toolchain beta-2020-08-29
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+beta-2020-08-29" "read-manifest" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] started tweaking crates.io crate second_order_ode 0.1.0
[INFO] finished tweaking crates.io crate second_order_ode 0.1.0
[INFO] tweaked toml for crates.io crate second_order_ode 0.1.0 written to /workspace/builds/worker-6/source/Cargo.toml
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+beta-2020-08-29" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update", kill_on_drop: false }`
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+beta-2020-08-29" "fetch" "--locked" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-6/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-6/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" "rustops/crates-build-env@sha256:d92eaeed33fa75130ca1ee6c8a01d1ffb62bac859dfdfb3450e3e5d1c0146529" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2020-08-29" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] bd6f0bcbb3641f91f1f5e5f45de4a14cc13b8458d69794e1867cb5ce7606cc24
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] running `Command { std: "docker" "start" "-a" "bd6f0bcbb3641f91f1f5e5f45de4a14cc13b8458d69794e1867cb5ce7606cc24", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "bd6f0bcbb3641f91f1f5e5f45de4a14cc13b8458d69794e1867cb5ce7606cc24", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "bd6f0bcbb3641f91f1f5e5f45de4a14cc13b8458d69794e1867cb5ce7606cc24", kill_on_drop: false }`
[INFO] [stdout] bd6f0bcbb3641f91f1f5e5f45de4a14cc13b8458d69794e1867cb5ce7606cc24
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-6/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-6/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" "rustops/crates-build-env@sha256:d92eaeed33fa75130ca1ee6c8a01d1ffb62bac859dfdfb3450e3e5d1c0146529" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2020-08-29" "doc" "--frozen" "--no-deps" "--document-private-items" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 21d94276a68404a18dcf69b60eee6e4ecff07d556b39b9f1613811f8295004f9
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] running `Command { std: "docker" "start" "-a" "21d94276a68404a18dcf69b60eee6e4ecff07d556b39b9f1613811f8295004f9", kill_on_drop: false }`
[INFO] [stderr]  Documenting second_order_ode v0.1.0 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 1.38s
[INFO] running `Command { std: "docker" "inspect" "21d94276a68404a18dcf69b60eee6e4ecff07d556b39b9f1613811f8295004f9", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "21d94276a68404a18dcf69b60eee6e4ecff07d556b39b9f1613811f8295004f9", kill_on_drop: false }`
[INFO] [stdout] 21d94276a68404a18dcf69b60eee6e4ecff07d556b39b9f1613811f8295004f9