[INFO] fetching crate ref-cast-impl 1.0.2...
[INFO] documenting ref-cast-impl-1.0.2 against 1.46.0 for beta-1.47-rustdoc-1
[INFO] extracting crate ref-cast-impl 1.0.2 into /workspace/builds/worker-1/source
[INFO] validating manifest of crates.io crate ref-cast-impl 1.0.2 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 ref-cast-impl 1.0.2
[INFO] finished tweaking crates.io crate ref-cast-impl 1.0.2
[INFO] tweaked toml for crates.io crate ref-cast-impl 1.0.2 written to /workspace/builds/worker-1/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-1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-1/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] a8d4f50e7279f638ed78a0654d2e855dcdb072fd8bd1349ab2b739cea7a66638
[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" "a8d4f50e7279f638ed78a0654d2e855dcdb072fd8bd1349ab2b739cea7a66638", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "a8d4f50e7279f638ed78a0654d2e855dcdb072fd8bd1349ab2b739cea7a66638", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "a8d4f50e7279f638ed78a0654d2e855dcdb072fd8bd1349ab2b739cea7a66638", kill_on_drop: false }`
[INFO] [stdout] a8d4f50e7279f638ed78a0654d2e855dcdb072fd8bd1349ab2b739cea7a66638
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-1/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] 1e3cf823cb13df005d2b7ea3dd881b6750ad14564b3cf2c6e74eb02c16be9139
[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" "1e3cf823cb13df005d2b7ea3dd881b6750ad14564b3cf2c6e74eb02c16be9139", kill_on_drop: false }`
[INFO] [stderr]  Documenting ref-cast-impl v1.0.2 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 1.34s
[INFO] running `Command { std: "docker" "inspect" "1e3cf823cb13df005d2b7ea3dd881b6750ad14564b3cf2c6e74eb02c16be9139", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "1e3cf823cb13df005d2b7ea3dd881b6750ad14564b3cf2c6e74eb02c16be9139", kill_on_drop: false }`
[INFO] [stdout] 1e3cf823cb13df005d2b7ea3dd881b6750ad14564b3cf2c6e74eb02c16be9139