[INFO] fetching crate prometheus_iota_exporter 0.1.3...
[INFO] documenting prometheus_iota_exporter-0.1.3 against 1.47.0 for beta-1.48-rustdoc-1
[INFO] extracting crate prometheus_iota_exporter 0.1.3 into /workspace/builds/worker-0/source
[INFO] validating manifest of crates.io crate prometheus_iota_exporter 0.1.3 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 prometheus_iota_exporter 0.1.3
[INFO] finished tweaking crates.io crate prometheus_iota_exporter 0.1.3
[INFO] tweaked toml for crates.io crate prometheus_iota_exporter 0.1.3 written to /workspace/builds/worker-0/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] running `Command { std: "/workspace/cargo-home/bin/cargo" "+1.47.0" "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" "+1.47.0" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] eb12af0689f8783b2f53dc5c79abbf56365251bcea5f551ebe2936346962fc01
[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" "eb12af0689f8783b2f53dc5c79abbf56365251bcea5f551ebe2936346962fc01", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "eb12af0689f8783b2f53dc5c79abbf56365251bcea5f551ebe2936346962fc01", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "eb12af0689f8783b2f53dc5c79abbf56365251bcea5f551ebe2936346962fc01", kill_on_drop: false }`
[INFO] [stdout] eb12af0689f8783b2f53dc5c79abbf56365251bcea5f551ebe2936346962fc01
[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" "+1.47.0" "doc" "--frozen" "--no-deps" "--document-private-items" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] dd70bfa857ea5ebcdfa872ae70330584cffcda9d627bfabe0475934337f41f84
[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" "dd70bfa857ea5ebcdfa872ae70330584cffcda9d627bfabe0475934337f41f84", kill_on_drop: false }`
[INFO] [stderr]     Checking untrusted v0.6.2
[INFO] [stderr]    Compiling ring v0.14.6
[INFO] [stderr]     Checking want v0.2.0
[INFO] [stderr]     Checking serde_json v1.0.59
[INFO] [stderr]     Checking env_logger v0.6.2
[INFO] [stderr]     Checking tokio-io v0.1.13
[INFO] [stderr]     Checking tokio-threadpool v0.1.18
[INFO] [stderr]     Checking tokio-reactor v0.1.12
[INFO] [stderr]     Checking h2 v0.1.26
[INFO] [stderr]     Checking tokio-tcp v0.1.4
[INFO] [stderr]     Checking tokio v0.1.22
[INFO] [stderr]     Checking hyper v0.12.35
[INFO] [stderr]     Checking webpki v0.19.1
[INFO] [stderr]     Checking sct v0.5.0
[INFO] [stderr]     Checking ct-logs v0.5.1
[INFO] [stderr]     Checking rustls v0.15.2
[INFO] [stderr]     Checking webpki-roots v0.16.0
[INFO] [stderr]     Checking tokio-rustls v0.9.4
[INFO] [stderr]     Checking hyper-rustls v0.16.1
[INFO] [stderr]     Checking prometheus_exporter_base v0.2.2
[INFO] [stderr]  Documenting prometheus_iota_exporter v0.1.3 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 22.85s
[INFO] running `Command { std: "docker" "inspect" "dd70bfa857ea5ebcdfa872ae70330584cffcda9d627bfabe0475934337f41f84", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "dd70bfa857ea5ebcdfa872ae70330584cffcda9d627bfabe0475934337f41f84", kill_on_drop: false }`
[INFO] [stdout] dd70bfa857ea5ebcdfa872ae70330584cffcda9d627bfabe0475934337f41f84
