[INFO] fetching crate nrf52 0.4.1...
[INFO] documenting nrf52-0.4.1 against 1.46.0 for beta-1.47-rustdoc-1
[INFO] extracting crate nrf52 0.4.1 into /workspace/builds/worker-5/source
[INFO] validating manifest of crates.io crate nrf52 0.4.1 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 nrf52 0.4.1
[INFO] finished tweaking crates.io crate nrf52 0.4.1
[INFO] tweaked toml for crates.io crate nrf52 0.4.1 written to /workspace/builds/worker-5/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-5/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-5/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] 0c5677c9994db159de5df09739074dc01c1561ef8d3bd3dbfd24a3381454d694
[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" "0c5677c9994db159de5df09739074dc01c1561ef8d3bd3dbfd24a3381454d694", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "0c5677c9994db159de5df09739074dc01c1561ef8d3bd3dbfd24a3381454d694", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "0c5677c9994db159de5df09739074dc01c1561ef8d3bd3dbfd24a3381454d694", kill_on_drop: false }`
[INFO] [stdout] 0c5677c9994db159de5df09739074dc01c1561ef8d3bd3dbfd24a3381454d694
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-5/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-5/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] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] [stdout] b021673821e798ddb6b151f27413eda1699d9de1715d572fe33ee4fb30d28600
[INFO] running `Command { std: "docker" "start" "-a" "b021673821e798ddb6b151f27413eda1699d9de1715d572fe33ee4fb30d28600", kill_on_drop: false }`
[INFO] [stderr]    Compiling cortex-m v0.5.10
[INFO] [stderr]     Checking aligned v0.2.0
[INFO] [stderr]    Compiling nrf52 v0.4.1 (/opt/rustwide/workdir)
[INFO] [stderr]  Documenting nrf52 v0.4.1 (/opt/rustwide/workdir)
[INFO] [stderr] error: Could not document `nrf52`.
[INFO] [stderr] 
[INFO] [stderr] Caused by:
[INFO] [stderr]   process didn't exit successfully: `rustdoc --crate-type lib --crate-name nrf52 src/lib.rs -o /opt/rustwide/target/doc --error-format=json --json=diagnostic-rendered-ansi --document-private-items -L dependency=/opt/rustwide/target/debug/deps --extern bare_metal=/opt/rustwide/target/debug/deps/libbare_metal-f1e4959e24c8e643.rmeta --extern cortex_m=/opt/rustwide/target/debug/deps/libcortex_m-e2524b63e15d93a3.rmeta --extern vcell=/opt/rustwide/target/debug/deps/libvcell-2f371df3cd1ada44.rmeta --cap-lints=warn` (signal: 9, SIGKILL: kill)
[INFO] running `Command { std: "docker" "inspect" "b021673821e798ddb6b151f27413eda1699d9de1715d572fe33ee4fb30d28600", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "b021673821e798ddb6b151f27413eda1699d9de1715d572fe33ee4fb30d28600", kill_on_drop: false }`
[INFO] [stdout] b021673821e798ddb6b151f27413eda1699d9de1715d572fe33ee4fb30d28600