[INFO] cloning repository https://github.com/Deepzirox/DarkOS-Kernel
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/Deepzirox/DarkOS-Kernel" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FDeepzirox%2FDarkOS-Kernel", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FDeepzirox%2FDarkOS-Kernel'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 6c1688bad5d57d18ee1d0fb7b6a8839b7acf3745
[INFO] documenting Deepzirox/DarkOS-Kernel against 1.61.0 for beta-1.62-rustdoc-1
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FDeepzirox%2FDarkOS-Kernel" "/workspace/builds/worker-12/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-12/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/Deepzirox/DarkOS-Kernel on toolchain 1.61.0
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+1.61.0" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/Deepzirox/DarkOS-Kernel
[INFO] finished tweaking git repo https://github.com/Deepzirox/DarkOS-Kernel
[INFO] tweaked toml for git repo https://github.com/Deepzirox/DarkOS-Kernel written to /workspace/builds/worker-12/source/Cargo.toml
[INFO] crate git repo https://github.com/Deepzirox/DarkOS-Kernel already has a lockfile, it will not be regenerated
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+1.61.0" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr] warning: unused manifest key: unstable
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded bootloader v0.9.11
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-12/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-12/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" "ghcr.io/rust-lang/crates-build-env/linux@sha256:d190cb871061d98bc6d0581d85cb2ecb09a0f8a142ba5463de30be9999fc3251" "/opt/rustwide/cargo-home/bin/cargo" "+1.61.0" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 795c615aee5ce965d92305807214fb99c5ceef3bd5aad50c3f34a370598e7a16
[INFO] running `Command { std: "docker" "start" "-a" "795c615aee5ce965d92305807214fb99c5ceef3bd5aad50c3f34a370598e7a16", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "795c615aee5ce965d92305807214fb99c5ceef3bd5aad50c3f34a370598e7a16", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "795c615aee5ce965d92305807214fb99c5ceef3bd5aad50c3f34a370598e7a16", kill_on_drop: false }`
[INFO] [stdout] 795c615aee5ce965d92305807214fb99c5ceef3bd5aad50c3f34a370598e7a16
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-12/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-12/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" "ghcr.io/rust-lang/crates-build-env/linux@sha256:d190cb871061d98bc6d0581d85cb2ecb09a0f8a142ba5463de30be9999fc3251" "/opt/rustwide/cargo-home/bin/cargo" "+1.61.0" "doc" "--frozen" "--no-deps" "--document-private-items" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 40367c732180822a6baae854efe5fca08fd1493fa1e703f20d72352e87ff0154
[INFO] running `Command { std: "docker" "start" "-a" "40367c732180822a6baae854efe5fca08fd1493fa1e703f20d72352e87ff0154", kill_on_drop: false }`
[INFO] [stderr] warning: unused manifest key: unstable
[INFO] [stderr]    Compiling bootloader v0.9.11
[INFO] [stderr]     Checking volatile v0.2.7
[INFO] [stderr]  Documenting os v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] error[E0554]: `#![feature]` may not be used on the stable release channel
[INFO] [stdout]  --> src/main.rs:3:12
[INFO] [stdout]   |
[INFO] [stdout] 3 | #![feature(asm)]
[INFO] [stdout]   |            ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: aborting due to previous error
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] For more information about this error, try `rustc --explain E0554`.
[INFO] [stdout] 
[INFO] [stderr] error: could not document `os`
[INFO] [stderr] 
[INFO] [stderr] Caused by:
[INFO] [stderr]   process didn't exit successfully: `rustdoc --edition=2018 --crate-type bin --crate-name os src/main.rs -o /opt/rustwide/target/doc --error-format=json --json=diagnostic-rendered-ansi,artifacts,future-incompat --document-private-items -C metadata=f0f3cb16b2a72597 -L dependency=/opt/rustwide/target/debug/deps --extern bootloader=/opt/rustwide/target/debug/deps/libbootloader-ad675dc99fb9fcdd.rmeta --extern volatile=/opt/rustwide/target/debug/deps/libvolatile-cf6e6be70df08b7e.rmeta --cap-lints=warn --crate-version 0.1.0` (exit status: 1)
[INFO] running `Command { std: "docker" "inspect" "40367c732180822a6baae854efe5fca08fd1493fa1e703f20d72352e87ff0154", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "40367c732180822a6baae854efe5fca08fd1493fa1e703f20d72352e87ff0154", kill_on_drop: false }`
[INFO] [stdout] 40367c732180822a6baae854efe5fca08fd1493fa1e703f20d72352e87ff0154