[INFO] fetching crate mk66f18 0.2.0...
[INFO] documenting mk66f18-0.2.0 against beta-2020-08-29 for beta-1.47-rustdoc-1
[INFO] extracting crate mk66f18 0.2.0 into /workspace/builds/worker-0/source
[INFO] validating manifest of crates.io crate mk66f18 0.2.0 on toolchain beta-2020-08-29
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+beta-2020-08-29" "read-manifest" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] started tweaking crates.io crate mk66f18 0.2.0
[INFO] finished tweaking crates.io crate mk66f18 0.2.0
[INFO] tweaked toml for crates.io crate mk66f18 0.2.0 written to /workspace/builds/worker-0/source/Cargo.toml
[INFO] crate crates.io crate mk66f18 0.2.0 already has a lockfile, it will not be regenerated
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+beta-2020-08-29" "fetch" "--locked" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded cortex-m-rt v0.6.10
[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" "+beta-2020-08-29" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 9bcf009b32c35056cf93850d027bd6a6661da93d34fdfd5c5fa27f945d0cb973
[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" "9bcf009b32c35056cf93850d027bd6a6661da93d34fdfd5c5fa27f945d0cb973", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "9bcf009b32c35056cf93850d027bd6a6661da93d34fdfd5c5fa27f945d0cb973", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "9bcf009b32c35056cf93850d027bd6a6661da93d34fdfd5c5fa27f945d0cb973", kill_on_drop: false }`
[INFO] [stdout] 9bcf009b32c35056cf93850d027bd6a6661da93d34fdfd5c5fa27f945d0cb973
[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" "+beta-2020-08-29" "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] 9064fb4b866678205163aac1cc3523fd7fa9a1b6e3a2fb37123d4f967abcedcd
[INFO] running `Command { std: "docker" "start" "-a" "9064fb4b866678205163aac1cc3523fd7fa9a1b6e3a2fb37123d4f967abcedcd", kill_on_drop: false }`
[INFO] [stderr]    Compiling typenum v1.10.0
[INFO] [stderr]    Compiling cortex-m v0.6.1
[INFO] [stderr]     Checking stable_deref_trait v1.1.1
[INFO] [stderr]     Checking vcell v0.1.0
[INFO] [stderr]    Compiling mk66f18 v0.2.0 (/opt/rustwide/workdir)
[INFO] [stderr]    Compiling bare-metal v0.2.4
[INFO] [stderr]     Checking volatile-register v0.2.0
[INFO] [stderr]     Checking generic-array v0.12.3
[INFO] [stderr]     Checking as-slice v0.1.0
[INFO] [stderr]     Checking aligned v0.3.1
[INFO] [stderr]  Documenting mk66f18 v0.2.0 (/opt/rustwide/workdir)
[INFO] [stderr] error: Could not document `mk66f18`.
[INFO] [stderr] 
[INFO] [stderr] Caused by:
[INFO] [stderr]   process didn't exit successfully: `rustdoc --crate-type lib --crate-name mk66f18 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-e6028e3680ce68ae.rmeta --extern cortex_m=/opt/rustwide/target/debug/deps/libcortex_m-ccecee7920e34a0b.rmeta --extern vcell=/opt/rustwide/target/debug/deps/libvcell-563ad38c55a2c007.rmeta --cap-lints=warn --crate-version 0.2.0` (signal: 9, SIGKILL: kill)
[INFO] running `Command { std: "docker" "inspect" "9064fb4b866678205163aac1cc3523fd7fa9a1b6e3a2fb37123d4f967abcedcd", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "9064fb4b866678205163aac1cc3523fd7fa9a1b6e3a2fb37123d4f967abcedcd", kill_on_drop: false }`
[INFO] [stdout] 9064fb4b866678205163aac1cc3523fd7fa9a1b6e3a2fb37123d4f967abcedcd