[INFO] cloning repository https://github.com/Raforawesome/rsdos
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/Raforawesome/rsdos" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FRaforawesome%2Frsdos", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FRaforawesome%2Frsdos'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 58019d39fe0cba82cacc42dacae0cf3a411a00cf
[INFO] documenting Raforawesome/rsdos 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%2FRaforawesome%2Frsdos" "/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/Raforawesome/rsdos 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] removed /workspace/builds/worker-6/source/.cargo/config.toml
[INFO] started tweaking git repo https://github.com/Raforawesome/rsdos
[INFO] finished tweaking git repo https://github.com/Raforawesome/rsdos
[INFO] tweaked toml for git repo https://github.com/Raforawesome/rsdos written to /workspace/builds/worker-6/source/Cargo.toml
[INFO] crate git repo https://github.com/Raforawesome/rsdos 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]     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 v0.9.22
[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" "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] 3fb947aec601e91e1dc5840ec06a488be9f279a2413559503c8243a2d3bcc1f5
[INFO] running `Command { std: "docker" "start" "-a" "3fb947aec601e91e1dc5840ec06a488be9f279a2413559503c8243a2d3bcc1f5", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "3fb947aec601e91e1dc5840ec06a488be9f279a2413559503c8243a2d3bcc1f5", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "3fb947aec601e91e1dc5840ec06a488be9f279a2413559503c8243a2d3bcc1f5", kill_on_drop: false }`
[INFO] [stdout] 3fb947aec601e91e1dc5840ec06a488be9f279a2413559503c8243a2d3bcc1f5
[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" "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] 121b8666e17e5d0696367f3efea7e356322dd2f9c3e0831f6839054ecacef285
[INFO] running `Command { std: "docker" "start" "-a" "121b8666e17e5d0696367f3efea7e356322dd2f9c3e0831f6839054ecacef285", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]    Compiling bootloader v0.9.22
[INFO] [stderr]  Documenting rsdos 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:3:1
[INFO] [stdout]   |
[INFO] [stdout] 3 | #![feature(alloc_error_handler)] // at the top of the file
[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 `rsdos`
[INFO] [stderr] 
[INFO] [stderr] Caused by:
[INFO] [stderr]   process didn't exit successfully: `rustdoc --edition=2021 --crate-type lib --crate-name rsdos src/lib.rs -o /opt/rustwide/target/doc --error-format=json --json=diagnostic-rendered-ansi,artifacts,future-incompat --document-private-items -C metadata=c6b609e99df201a7 -L dependency=/opt/rustwide/target/debug/deps --extern bootloader=/opt/rustwide/target/debug/deps/libbootloader-43479e0c99012e02.rmeta --cap-lints=warn --crate-version 0.1.0` (exit status: 1)
[INFO] running `Command { std: "docker" "inspect" "121b8666e17e5d0696367f3efea7e356322dd2f9c3e0831f6839054ecacef285", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "121b8666e17e5d0696367f3efea7e356322dd2f9c3e0831f6839054ecacef285", kill_on_drop: false }`
[INFO] [stdout] 121b8666e17e5d0696367f3efea7e356322dd2f9c3e0831f6839054ecacef285