[INFO] cloning repository https://github.com/0yoyoyo/ponkan-kernel
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/0yoyoyo/ponkan-kernel" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2F0yoyoyo%2Fponkan-kernel", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2F0yoyoyo%2Fponkan-kernel'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] c4661cbf4eb69d3ea10dda3a0175caa230dbe635
[INFO] documenting 0yoyoyo/ponkan-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%2F0yoyoyo%2Fponkan-kernel" "/workspace/builds/worker-20/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-20/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/0yoyoyo/ponkan-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] removed /workspace/builds/worker-20/source/.cargo/config.toml
[INFO] removed /workspace/builds/worker-20/source/rust-toolchain
[INFO] started tweaking git repo https://github.com/0yoyoyo/ponkan-kernel
[INFO] finished tweaking git repo https://github.com/0yoyoyo/ponkan-kernel
[INFO] tweaked toml for git repo https://github.com/0yoyoyo/ponkan-kernel written to /workspace/builds/worker-20/source/Cargo.toml
[INFO] crate git repo https://github.com/0yoyoyo/ponkan-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]     Blocking waiting for file lock on package cache
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-20/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-20/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] 0d02d1c43d743c25694882b0df6498e3b7f8b7f84aacc4b32d7b6564b99f862f
[INFO] running `Command { std: "docker" "start" "-a" "0d02d1c43d743c25694882b0df6498e3b7f8b7f84aacc4b32d7b6564b99f862f", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "0d02d1c43d743c25694882b0df6498e3b7f8b7f84aacc4b32d7b6564b99f862f", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "0d02d1c43d743c25694882b0df6498e3b7f8b7f84aacc4b32d7b6564b99f862f", kill_on_drop: false }`
[INFO] [stdout] 0d02d1c43d743c25694882b0df6498e3b7f8b7f84aacc4b32d7b6564b99f862f
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-20/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-20/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] c90f53807c7bb72ec962ca7f3a05ebd26a1110a3ea745aabac244260a84bc977
[INFO] running `Command { std: "docker" "start" "-a" "c90f53807c7bb72ec962ca7f3a05ebd26a1110a3ea745aabac244260a84bc977", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]    Compiling ponkan-kernel v0.1.0 (/opt/rustwide/workdir)
[INFO] [stderr]  Documenting ponkan-kernel 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:3:1
[INFO] [stdout]   |
[INFO] [stdout] 3 | #![feature(abi_x86_interrupt)]
[INFO] [stdout]   | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr] error: could not document `ponkan-kernel`
[INFO] [stdout] error[E0554]: `#![feature]` may not be used on the stable release channel
[INFO] [stdout]  --> src/main.rs:4:1
[INFO] [stdout]   |
[INFO] [stdout] 4 | #![feature(default_alloc_error_handler)]
[INFO] [stdout]   | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr] 
[INFO] [stdout] error: Compilation failed, aborting rustdoc
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr] Caused by:
[INFO] [stdout] error: aborting due to 3 previous errors
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]   process didn't exit successfully: `rustdoc --edition=2018 --crate-type bin --crate-name ponkan_kernel src/main.rs -o /opt/rustwide/target/doc --error-format=json --json=diagnostic-rendered-ansi,artifacts,future-incompat --document-private-items -C metadata=f1cd4c629f328d3f -L dependency=/opt/rustwide/target/debug/deps --cap-lints=warn --crate-version 0.1.0` (exit status: 1)
[INFO] [stdout] For more information about this error, try `rustc --explain E0554`.
[INFO] [stdout] 
[INFO] running `Command { std: "docker" "inspect" "c90f53807c7bb72ec962ca7f3a05ebd26a1110a3ea745aabac244260a84bc977", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "c90f53807c7bb72ec962ca7f3a05ebd26a1110a3ea745aabac244260a84bc977", kill_on_drop: false }`
[INFO] [stdout] c90f53807c7bb72ec962ca7f3a05ebd26a1110a3ea745aabac244260a84bc977