[INFO] updating cached repository https://github.com/reynoldsbd/bootloader-uefi
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "-c" "remote.origin.fetch=refs/heads/*:refs/heads/*" "fetch" "origin" "--force" "--prune", kill_on_drop: false }`
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] f36b23b8be9791c3c858425139681a4c34be12d3
[INFO] documenting reynoldsbd/bootloader-uefi against master#394e1b40d264aa6928811919c1124fa248e7d802 for pr-73566
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Freynoldsbd%2Fbootloader-uefi" "/workspace/builds/worker-6/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-6/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/reynoldsbd/bootloader-uefi on toolchain 394e1b40d264aa6928811919c1124fa248e7d802
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+394e1b40d264aa6928811919c1124fa248e7d802" "read-manifest" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/reynoldsbd/bootloader-uefi
[INFO] finished tweaking git repo https://github.com/reynoldsbd/bootloader-uefi
[INFO] tweaked toml for git repo https://github.com/reynoldsbd/bootloader-uefi written to /workspace/builds/worker-6/source/Cargo.toml
[INFO] crate git repo https://github.com/reynoldsbd/bootloader-uefi already has a lockfile, it will not be regenerated
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+394e1b40d264aa6928811919c1124fa248e7d802" "fetch" "--locked" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-6/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-6/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" "MAP_USER_ID=0" "-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" "--network" "none" "rustops/crates-build-env@sha256:819119df93c0f5eca3f29186f14981ef29945a311854d7222af07488600a2584" "/opt/rustwide/cargo-home/bin/cargo" "+394e1b40d264aa6928811919c1124fa248e7d802" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 19a81e5946ae7136d4dc2d74edc0d22b89416de5ab3f2c3acea18fe000fd3f08
[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" "19a81e5946ae7136d4dc2d74edc0d22b89416de5ab3f2c3acea18fe000fd3f08", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "19a81e5946ae7136d4dc2d74edc0d22b89416de5ab3f2c3acea18fe000fd3f08", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "19a81e5946ae7136d4dc2d74edc0d22b89416de5ab3f2c3acea18fe000fd3f08", kill_on_drop: false }`
[INFO] [stdout] 19a81e5946ae7136d4dc2d74edc0d22b89416de5ab3f2c3acea18fe000fd3f08
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-6/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-6/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" "MAP_USER_ID=0" "-e" "CARGO_TARGET_DIR=/opt/rustwide/target" "-e" "CARGO_INCREMENTAL=0" "-e" "RUST_BACKTRACE=full" "-e" "RUSTDOCFLAGS=--cap-lints=forbid" "-e" "CARGO_HOME=/opt/rustwide/cargo-home" "-e" "RUSTUP_HOME=/opt/rustwide/rustup-home" "-w" "/opt/rustwide/workdir" "-m" "1610612736" "--network" "none" "rustops/crates-build-env@sha256:819119df93c0f5eca3f29186f14981ef29945a311854d7222af07488600a2584" "/opt/rustwide/cargo-home/bin/cargo" "+394e1b40d264aa6928811919c1124fa248e7d802" "doc" "--frozen" "--no-deps" "--document-private-items" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 2cb63dedadec4f5393db79df357f286204838a43cb88f88bd7b94c26c26af5a8
[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" "2cb63dedadec4f5393db79df357f286204838a43cb88f88bd7b94c26c26af5a8", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]     Checking zero v0.1.2
[INFO] [stderr]     Checking rlibc v1.0.0
[INFO] [stderr]     Checking bitflags v1.0.1
[INFO] [stderr]     Checking xmas-elf v0.6.2
[INFO] [stderr]     Checking efi v0.1.0 (https://github.com/reynoldsbd/libefi#da66191e)
[INFO] [stderr]  Documenting bootloader-uefi v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] error[E0522]: definition of an unknown language item: `panic_fmt`
[INFO] [stdout]    --> src/main.rs:261:1
[INFO] [stdout]     |
[INFO] [stdout] 261 | #[lang = "panic_fmt"]
[INFO] [stdout]     | ^^^^^^^^^^^^^^^^^^^^^ definition of unknown language item `panic_fmt`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr] error: Could not document `bootloader-uefi`.
[INFO] [stderr] 
[INFO] [stderr] Caused by:
[INFO] [stderr]   process didn't exit successfully: `rustdoc --crate-type bin --crate-name bootloader_uefi src/main.rs -o /opt/rustwide/target/doc --error-format=json --json=diagnostic-rendered-ansi --document-private-items -L dependency=/opt/rustwide/target/debug/deps --extern efi=/opt/rustwide/target/debug/deps/libefi-6d8e75da7f3a3042.rmeta --extern xmas_elf=/opt/rustwide/target/debug/deps/libxmas_elf-678da24f966d2ff1.rmeta --cap-lints=forbid` (exit code: 1)
[INFO] [stdout] error: aborting due to previous error
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] For more information about this error, try `rustc --explain E0522`.
[INFO] [stdout] 
[INFO] running `Command { std: "docker" "inspect" "2cb63dedadec4f5393db79df357f286204838a43cb88f88bd7b94c26c26af5a8", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "2cb63dedadec4f5393db79df357f286204838a43cb88f88bd7b94c26c26af5a8", kill_on_drop: false }`
[INFO] [stdout] 2cb63dedadec4f5393db79df357f286204838a43cb88f88bd7b94c26c26af5a8