[INFO] fetching crate shard-engine 0.0.0...
[INFO] documenting shard-engine-0.0.0 against 1.46.0 for beta-1.47-rustdoc-1
[INFO] extracting crate shard-engine 0.0.0 into /workspace/builds/worker-0/source
[INFO] validating manifest of crates.io crate shard-engine 0.0.0 on toolchain 1.46.0
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+1.46.0" "read-manifest" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] started tweaking crates.io crate shard-engine 0.0.0
[INFO] finished tweaking crates.io crate shard-engine 0.0.0
[INFO] tweaked toml for crates.io crate shard-engine 0.0.0 written to /workspace/builds/worker-0/source/Cargo.toml
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+1.46.0" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update", kill_on_drop: false }`
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+1.46.0" "fetch" "--locked" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-0/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-0/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" "+1.46.0" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 20a31377ed8f7cbb077b761967edbb3abce62d223dbb8c147fa8c477d8e31494
[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" "20a31377ed8f7cbb077b761967edbb3abce62d223dbb8c147fa8c477d8e31494", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "20a31377ed8f7cbb077b761967edbb3abce62d223dbb8c147fa8c477d8e31494", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "20a31377ed8f7cbb077b761967edbb3abce62d223dbb8c147fa8c477d8e31494", kill_on_drop: false }`
[INFO] [stdout] 20a31377ed8f7cbb077b761967edbb3abce62d223dbb8c147fa8c477d8e31494
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-0/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-0/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" "+1.46.0" "doc" "--frozen" "--no-deps" "--document-private-items" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 9c74f31c3c0313562d56721184cd1d779a20ecfcbe6a8ccac5de421e90c31ccc
[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" "9c74f31c3c0313562d56721184cd1d779a20ecfcbe6a8ccac5de421e90c31ccc", kill_on_drop: false }`
[INFO] [stderr]  Documenting shard-engine v0.0.0 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 1.07s
[INFO] running `Command { std: "docker" "inspect" "9c74f31c3c0313562d56721184cd1d779a20ecfcbe6a8ccac5de421e90c31ccc", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "9c74f31c3c0313562d56721184cd1d779a20ecfcbe6a8ccac5de421e90c31ccc", kill_on_drop: false }`
[INFO] [stdout] 9c74f31c3c0313562d56721184cd1d779a20ecfcbe6a8ccac5de421e90c31ccc