[INFO] fetching crate varu64 0.6.1...
[INFO] documenting varu64-0.6.1 against 1.47.0 for beta-1.48-rustdoc-1
[INFO] extracting crate varu64 0.6.1 into /workspace/builds/worker-7/source
[INFO] validating manifest of crates.io crate varu64 0.6.1 on toolchain 1.47.0
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+1.47.0" "read-manifest" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] started tweaking crates.io crate varu64 0.6.1
[INFO] finished tweaking crates.io crate varu64 0.6.1
[INFO] tweaked toml for crates.io crate varu64 0.6.1 written to /workspace/builds/worker-7/source/Cargo.toml
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+1.47.0" "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" "+1.47.0" "fetch" "--locked" "--manifest-path" "Cargo.toml", 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] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-7/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-7/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" "+1.47.0" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 7a1e4561f79c380351f4e77fee5fbd7dea65ff821f6ecc79f93511d5776d0d24
[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" "7a1e4561f79c380351f4e77fee5fbd7dea65ff821f6ecc79f93511d5776d0d24", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "7a1e4561f79c380351f4e77fee5fbd7dea65ff821f6ecc79f93511d5776d0d24", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "7a1e4561f79c380351f4e77fee5fbd7dea65ff821f6ecc79f93511d5776d0d24", kill_on_drop: false }`
[INFO] [stdout] 7a1e4561f79c380351f4e77fee5fbd7dea65ff821f6ecc79f93511d5776d0d24
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-7/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-7/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" "+1.47.0" "doc" "--frozen" "--no-deps" "--document-private-items" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 704551a8abb1c6c6a88396f506356555646a47bd9f595a529708bbc0306d1b51
[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" "704551a8abb1c6c6a88396f506356555646a47bd9f595a529708bbc0306d1b51", kill_on_drop: false }`
[INFO] [stderr]  Documenting varu64 v0.6.1 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 1.01s
[INFO] running `Command { std: "docker" "inspect" "704551a8abb1c6c6a88396f506356555646a47bd9f595a529708bbc0306d1b51", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "704551a8abb1c6c6a88396f506356555646a47bd9f595a529708bbc0306d1b51", kill_on_drop: false }`
[INFO] [stdout] 704551a8abb1c6c6a88396f506356555646a47bd9f595a529708bbc0306d1b51
