[INFO] cloning repository https://github.com/HotQ/litu
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/HotQ/litu" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FHotQ%2Flitu", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FHotQ%2Flitu'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] f0e841210dd5b399d16392a2b0d325e24c210daf
[INFO] documenting HotQ/litu against 1.46.0 for beta-1.47-rustdoc-1
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FHotQ%2Flitu" "/workspace/builds/worker-7/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-7/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/HotQ/litu 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 git repo https://github.com/HotQ/litu
[INFO] removed path dependency proc from git repo https://github.com/HotQ/litu
[INFO] finished tweaking git repo https://github.com/HotQ/litu
[INFO] tweaked toml for git repo https://github.com/HotQ/litu written to /workspace/builds/worker-7/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] [stderr] warning: dependency (proc) specified without providing a local path, Git repository, or version to use. This will be considered an error in future versions
[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" "+1.46.0" "metadata" "--no-deps" "--format-version=1", 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] 77f6e4a11a8becc00992eed626470ac93a60c7c9f7477d355d0be2d9bbb3a4f4
[INFO] running `Command { std: "docker" "start" "-a" "77f6e4a11a8becc00992eed626470ac93a60c7c9f7477d355d0be2d9bbb3a4f4", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "77f6e4a11a8becc00992eed626470ac93a60c7c9f7477d355d0be2d9bbb3a4f4", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "77f6e4a11a8becc00992eed626470ac93a60c7c9f7477d355d0be2d9bbb3a4f4", kill_on_drop: false }`
[INFO] [stdout] 77f6e4a11a8becc00992eed626470ac93a60c7c9f7477d355d0be2d9bbb3a4f4
[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" "+1.46.0" "doc" "--frozen" "--no-deps" "--document-private-items" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 539f307d52a3049e722e21c24d3ce4dbaf5486507107ff1dbfcba2a7dac38358
[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" "539f307d52a3049e722e21c24d3ce4dbaf5486507107ff1dbfcba2a7dac38358", kill_on_drop: false }`
[INFO] [stderr] warning: dependency (proc) specified without providing a local path, Git repository, or version to use. This will be considered an error in future versions
[INFO] [stderr]     Checking proc v0.1.4
[INFO] [stderr]    Compiling num-traits v0.2.12
[INFO] [stderr]    Compiling num-integer v0.1.43
[INFO] [stderr]     Checking time v0.1.44
[INFO] [stderr]     Checking env_logger v0.6.2
[INFO] [stderr]     Checking parking_lot_core v0.6.2
[INFO] [stderr]     Checking parking_lot v0.9.0
[INFO] [stderr]     Checking chrono v0.4.15
[INFO] [stderr]  Documenting litu v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] error[E0554]: `#![feature]` may not be used on the stable release channel
[INFO] [stdout]  --> src/lib.rs:1:1
[INFO] [stdout]   |
[INFO] [stdout] 1 | #![feature(core_intrinsics, proc_macro_hygiene)]
[INFO] [stdout]   | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: Compilation failed, aborting rustdoc
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: aborting due to 2 previous errors
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] For more information about this error, try `rustc --explain E0554`.
[INFO] [stdout] 
[INFO] [stderr] error: Could not document `litu`.
[INFO] [stderr] 
[INFO] [stderr] Caused by:
[INFO] [stderr]   process didn't exit successfully: `rustdoc --edition=2018 --crate-type lib --crate-name litu 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 chrono=/opt/rustwide/target/debug/deps/libchrono-8ddd5e37f7f73bd8.rmeta --extern env_logger=/opt/rustwide/target/debug/deps/libenv_logger-5a3feb297a06b939.rmeta --extern kernel32=/opt/rustwide/target/debug/deps/libkernel32-03c247914a1985c7.rmeta --extern lazy_static=/opt/rustwide/target/debug/deps/liblazy_static-57a7edc7f441d44c.rmeta --extern libc=/opt/rustwide/target/debug/deps/liblibc-1ad3ad1e20beb97f.rmeta --extern log=/opt/rustwide/target/debug/deps/liblog-958bf2a074a4960f.rmeta --extern parking_lot=/opt/rustwide/target/debug/deps/libparking_lot-3fef51345d03452d.rmeta --extern proc=/opt/rustwide/target/debug/deps/libproc-c04c9d8226c870d3.rmeta --cap-lints=warn` (exit code: 1)
[INFO] running `Command { std: "docker" "inspect" "539f307d52a3049e722e21c24d3ce4dbaf5486507107ff1dbfcba2a7dac38358", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "539f307d52a3049e722e21c24d3ce4dbaf5486507107ff1dbfcba2a7dac38358", kill_on_drop: false }`
[INFO] [stdout] 539f307d52a3049e722e21c24d3ce4dbaf5486507107ff1dbfcba2a7dac38358